Home

brochure

1. AL A L_ISDMO EH Q F DM AL LM H AL HF F AL LM T F R H R R RM 1 x RM R R RM 2 A AL X GM nut A Fig 4 1 1a 4B9 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL The consumer can intall the cable according to this electrical schematic diagram traveling type of tower crane Fig 4 1 1b 4B10 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter five Hoisting winch 24PQC15 Symbol instructions C1 POC Single rope pull Mechanism code Motor power KW 5B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Instruction Keep the Min vertical speed when the rope pulled tight Keeps the Min lowering speed when put down the load Keep the middle speed when started to arise and be about to the end Keep the rated speed of motor in normal hoisting condition Select hoist speed according to the load Raise a heavy load at low speed and raise a light load at high speed Stop movement before the safety stop acting NOTICE It is forbidden to put the hook on the ground Loosen the steel rope slowly while placing a load
2. 12B 11 Fushun Yongmao Construction Machinery Co Ltd Add No Yuanda Road Shuncheng District Fushun Liaoning China Tel 86 413 7648899 7649988 Fax 86 413 7649999 Postcode 113126 Website http www yongmao com cn E mail sun yongmao com cn Manufacture License of Special Equipment No TS2410592 2008
3. Pump station outline drawing air bleed hole throttle valve Outline drawing for telescoping cylinder 9B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL II Basic technical parameter Hydraulic oil N46 antiwear hydraulic oil or 40thickened oil volume for oil box 85L Motor power 4KW Max working pressure for 20MPa telescoping Oil pump capacity 8 4L mm Cylinder inner diameter 160mm Piston rod diameter 110mm Max telescoping force 40 2t Telescoping speed 0 42 m min Return speed Adjustable in safe range Hydraulic travel 1600mm High pressure hose West Germany standard 40 13 60 H type high pressure hose assembly 4m 9B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL III Working principle Driving the oil pump by joint slack after motor starting then the oil pump makes fat liquor from oil box to telescoping cylinder pass through the filter combine change valve and high pressure glue pipe assembly Combination reversing valve E pressure hose assembly 41 p M amp IN Pressure gauge E S LEY ES m rra Telescop
4. Table12 1 1 Code i Symbols Type International standard or main characteristic number wv GO K 12032 08 Li Ca extreme pressure grease NLGIO grade 01032 60 MOS2 lubricating grease special purpose RC Q 12032 13 MIL L2105D lubricating oil SAES0W90 grade ye zt saos high dosi index 210 hydraulic oil 40 221111 8 100 5 6 mm S 2 X 01032 45 ISO6743 4 hydraulic oil HV type 40 C 68mm S Q E E 01032 26 1SO6743 4 hydraulic oil HV type 40 C 46mm S C G2 01032 51 Li Ca extreme pressure grease NLGI2 grade e carbowax lithium base grease NLGIO00 grade S000 H 12032 52 special purpose G3 85 12032 38 lithtum base grease NLGI3 grade 46MR401 lubricating grease for installing special purpose e GC Synthesis basis soap lubricating grease NLGD grade special purpose General instruction see table 12 2 1 Table 12 2 1 M When startig N Oil level V Draining R fillup G Lubricating 12B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 1 Running in period Carry out the first draining of the reduction gears after 450 working hours 2 Using the grease gun 1 Grease all the articulations without grease nipples such as door and flap hinges rods locks and articulations of the safety devices 2 ucing any impurity into the oil when checking the oil level or draining take care to clean the parts located near the
5. trolley backwards Control contactor for Control panel switch for n trolley brake ad trolley medium speed DAV Power supply contactor XDGV Control panel switch for for trolley forwards trolley high speed 4B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Symbol Name Symbol Name DAr Power supply contactor DPVI Relay for controlling trolley for trolley backwards medium speed Power supply contactor DPV for trolley medium PD Contactor for controlling trolley blower speed DGV sperd DFS Trolley brake controlling trolley DRa ur D DveM Motor for trolley blower trolley DM Trolley motor Gt Telescoping motor DDi Breaker for trolley main XGi Button for weather vane loop effect XRGil Relay for weather vane RFa Contactor for controlling effect slewing brake XRGi2 Relay for weather vane T Terdunal strip effect Power supply contactor Power supply contactor for RD RG for right slewing left slewing RRC BSR Thermostat rectifier RFS Slewing brake RRa slewing GiFa kun in E HveM Motor for slewing blower VGi Weather vane indicator RM S csinm motor light XRES Button for slewing PXR Slewing control brake potentiometer SRG Travel switch for Breaker for slewing main slewing to the left loop SRD Travel switch for SD Parallel relay for trolleying slewing to the right and hoisting 4B 7 STT113 TOWER CRA
6. 6B 5 V Slewing brake 6 8 1 Manual brake release 6 9 2 Electric starting of weather varie deyloe 2222 ites series steed eee 6B 11 3 Service and maintenance of slewing brake 0006 6B 12 VI Wiring chart of R mem 6B 13 6B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL I Explanation of symbols RTC Locked rotor torque N m Eddy current speed regulation Variable voltage speed control Slewing mechanism Description Select the slewing speed according to the required displacement Accelerate or decelerate the slewing speed gradually When stopping the jib speed down first and then stop the slewing operating It is forbidden to stop the jib by slewing brake which is only used to position the jib for hoisting when wind speed is less than 13m s Prevent wire rope from distorting when slewing the jib and hoisting the load are carried out at the same time II Composition of slewing mechanism and its working principle The slewing mechanism is composed of moment motor and planetary reduction gear see Fig 6 2 1 It adopts electronic voltage regulating control system The speed is adjusted via adjusting supply voltage of the stator for moment motor the eddy current brake and the eddy current The slewing driving system is composed of moment motor and planetary reduction gear Th
7. c gt io 8 S SA 4 S gt E i S k M lt B S 2 s M 50 h 450 h 900 h 1900h 12B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 1 Maintenance on trolley mechanism The following rules should be strictly observed to do any kind of maintenance on trolley The operator must tie the safety rope 1 When making maintenance on the brake the operator must ride on the motor and step on the mechanism pedal 2 12B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Maintenance on hook The bearing on the traverse beam of the hook must be greased every 200 hours using calcium based grease C G2 Li Ca extreme pressure grease NLGI2 grade 150 hours M month 12B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Maintenance on rope twist protector G Lubricating OTa Ca extreme pressure grease NLG12 grade 350 hours 3 months 14 12B 6 STT113 TOWER CRANE OPERATION AND SERVICE
8. If there is no above mentioned problem occurred please replace the slewing controller 5 After the control lever back to zero there is a contactor RD or RG didn t power down It need to cut off the power and check the zero position of potentiometer Pull out the inserted piece between controller and mother board of thyristor Measure the resistance between earthing terminal and sliding end of potentiometer by multimeter If the resistance is infinitely great replace the potentiometer 6B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 6 positive turn and negative turn contactor RD or RG don t close First check the connection whether loosen or broken line next supply power and check the sliding end of potentiometer RP should have plus minus constant voltage when the handle operate if have no voltage output lookup potentiometer both end point should have plus minus constant voltage if there isn t voltage input the controller have problem When above check normal need check RD or A end of RG contactor should have 48V voltage under the operate handle condition and farther check the controller have 48V voltage above check normal please replacing the slewing controller 7 Slewing controller and crystal break tube both burn and turn black please check the modular first then check the power supply voltage whether overtop Please replacing the slewing controller if above check all normal 6B 7 STT113 TOWER CRANE OPER
9. Y1 3H 9 0 1 J 69 89 01V 6V 8 L d 9 1 811 6 4 0W 3H oo ex re Oll vl xen ec eco vo iw Men seco 9 9 19 81 Sl LY 1 9v GY 9 09 99 v9 79 cl 09 91 ETE TLE LLE 01 60 64 164 004 0 60 90 90 IA e o 1 UY UY Hm DUX aux 99 s 0 15 Lho0Ie tolo HY IV 91M ll 11 74H qux 9uX M oat a 9 1 9 S 9f Le se lve NN S OO T SAN NGA fi CNN AN A p PE d Q 30 EF o E p ele 1 ct pH ot Du e o dus aus NOAH Bi ari Tr Lo a vty ui AH Nt 4 NY N vA LAYOUT OF SLEWING TROLLEY TS1 TS2 Control transformer Auxiliary Auxiliary Auxiliary contact contact contact PD XRil XRi2 XRal XRa2 DFa DRV RDi trolley Weather Weather Weather Weather Slewing Hoist relay Trolley Control Slewing motor vane vane vane vane braking braking relay circuit contactor contactor
10. If the load exceeds the stated limit the adjustable screw on one elastic plate depresses contact of limit switch located on the other elastic plate so as to cut off control circuit So the mechanisms stop running to keep danger and damage away 8B 10 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Adjustment PX g Light load Over load P C d A E JU o 2 D SLMO fixed radius variable load mic SDMO fixed load variable radius variable radius deceleration 1 Elastic plate 2 Limit switch 3 Adjusting bolts 4 Moment housing 5 Support for installation Fig 8 5 2 8B 11 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Table 8 5 1 1 Adjusting the hoisting moment limiter SLMO 1 Drive the trolley to the jib nose and lift the specified load X with rated speed in 2 falls according to the jib length adjust device A 2 Lower the load then lift a load of Y X X 10 with the lowest speed in 2 falls The sensitive switch SLMO will motion and cut off the circuit otherwise Y it should be readjusted 2 Adjusting the trolley moment limiter SDMO os Measure the distance and mark the valid radius L for max load W and the radius L L
11. hoist moment limiter SLMO trolley moment limiter SDMO trolley reducer RDMO overload limiter SLCHPV hoist speed limiter SLCHGV it is absolutely forbidden to modify their adjustments which is adjusted well and truly during their initial installation and calibration 5 Lubricate your crane during operation in accordance with relevant regulations see Chapter XII Tower crane maintenance Pay special attention to the lubrication and worn state of the steel wire ropes see Chapter X Wire rope installing and testing rules for hoisting machinery 3B 17 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Operating method for weather vane effect 1 When the crane is out of service press the button for 1S 2S which situate in the side of electrical control panel HF inside the operators cabin the indicator lamp of weather vane lights up 2 Cut off the current of right panel by means of the break button O At this time the slewing brake is unlocked in released state At last cut off the main power supply of the crane 3 Unlock the slewing brake manually in release state see chapter 6 slewing mechanism 3B 18 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter IV Power supply and schematic diagram I Power supply of the tower crane 1 Power supply Install the electrical equipment of tower crane according to the national standard requirement ST series tower crane meet the relevant regulations in design and manufac
12. in special condition such as power cut damage the motor can declutch automatically and put the hook on the ground as following method Takeoff the pin 54 plate 53 tighten up the adjustment cover 55 to the hook fall off 5B 7 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 29 Bolt 32 Underplate of gag bit 33 Brake holder block 34 Fixing cover of brake 35 Compression spring 37 Spring adjusting nut 39 45 Eectromagnet adjusting nut 40 Cover cap 46 Bolt 52 Manual adjustable lever 53 Check plate 54 Shaft pin 55 Adjustment cover 59 Gag bit 61 Bolt bar 47 electromagnet Fig 5 1 2 5B 8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL V Maintenance and servicing of hoisting winch 1 Check carefully according to following table before daily operation Check item Requirement Oiling according to code designation and oil capacity 18 Reducer distillate hyperbolic gear oil Array in order and have no breakage broken rope extruding Rope and distortion end fixity is fastness Anchor screw is not loosening and not missing parts linking Jointing element the pin end to fixing and prevent fall off Limiter The hook limit position correctly In the good lubrication condition see the chapter tower Every lubricate parts servicing 5B 9 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Reducer oiling Pouring orifice Oil level position Fig 5
13. included power cable Screw tightly When electricity is applied you can instantly read the wind speed and magnitude The display has ft s and m s readings green the operating zone yellow the caution zone and red the danger zone When the crane is rising set the limit to 20 When the wind speed exceeds the above limits an alarm will be set and the relay will cut the power When the wind speed is back under the limit operation can resume as normal 8B 16 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 4 Tuning and repair 4 1 The electrical circuit inside the wind display has already been adjusted so there in no need for further tuning In the event of sufficient depreciation and or rough transport conditions the display can be inaccurate or the preset limit can be biased In this case a specialist can open the box and adjust the corresponding potentiometer Each potentiometer has the following purposes W1 13m s limit alarm setup W2 20m s limit alarm setup W3 LED bar full capacity adjustment W4 wide angled needle display full capacity adjustment W5 test signal magnitude adjustment five E 43 CP B seven t PA four FON f 9 259 three weather vane 20 7 V eight same direction three 6 ft s 02 66 Z UN EP mis 107 ND two
14. should be inspected properly the same inspection should be made on other fixing device such as rope anchor box that is made through forging or molten and bulldog grips Check if there is crackle check for possible slide between rope anchor box bulldog grip and wire rope check fixing status of wire rope on the drum In any case the requirement that the wire rope on the drum not less than 3 circles should be observed strictly 10B 7 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL VI The discard as useless standard of rope 1 The quality and quantity of broken rope For six layers and eight layers of ropes broken rope mostly occurs on the appearance And that is difference to wire rope of multi wall wire of rope broken rope of this wire rope occurs inside but not to view The visible broken ropes are related to the fatigue when the rope must be scrap in the hoisting machinery Table 10 6 1 working grade for mechanism M3 M8 n alternate lay albert lay the number of out rope construction extent layer rope load 6d 30d 6d 30d 6x19 7x19 6x 19 101 120 10 19 5 10 6w 19 34x7 221 240 6x37 19 38 10 19 Notice 1 The working grade of mechanism for tower crane is M4 2 The diameter of wire rope d 3 Should take out the stuff steel wire from the check number because can t make stuff steel wire as load steel wire The multilayer rope only consider visible out layer wire of
15. 1 3 Filling up the 18 2 distillate hyperbolic gear lubricant to the oil level according to the demand The crane should check the oiliness and oil level position after operated each 200h and filling up the oil to the oil level operated the 2400h should emptying the oil cleaning up and renewal the clean oil 5B 10 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 The crane should adjust the clearance between the brake moment of disk brake for motor brake holder block and brake disc after operated one week Demanded the brake moment of brake 2175N m the clearance between brakes is 0 8mm Check the brake whether sensitivity before operate the crane every day 4 If the motor found unusual noise in operation should stop and check immediately When the vibrate and noise increase obviously should check the bearing of motor if the play more than 0 1mm should replacing the new bearing and keep the grease in bearing simultaneously 5 There is grease fitting on the each outside of the bearing block for barrel arbor two end the crane should filling up the 2 lithium grease after the crane operated 200h every time 5 11 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter VI Slewing mechanism I Explanation of symbols E 6B 2 II Composition of slewing mechanism and its working principle 6B 2 III Working principle of controller 6B 4 IV Operating and fault clearance of slewing mechanism
16. 3 layers of rope windings should remain on the drum when the hook is at the lowest position See Fig 8 2 3 SLH SLD Fig 8 2 2 Fig 8 2 3 Note After erection or changing falls it is necessary to readjust the hoisting limiter 8B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL III Slewing limiter Purpose This device is used for tower crane which without collector It can prevent the electric cables from twisting and damage When installed the slewing limiter the max slewing circle is 3 2 Working principle The limiter is with reduction gear which driven by a pinion the pinion engaged directly with the slewing ring When the crane slewing this reduction gear drives cams 4 and 6 rotating which controlled the circuit breaker sensitive switch thus cutting off the slewing motion in suitable position via adjustment See Fig 8 3 1 Fig 8 3 1 8B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Adjustment Adjustment must be carried out with no load Operate the left slewing or right slewing and operate the contact A manually so as to confirm the contact which cutting off the controlling motion a Adjusting the right slewing limiter SRD Slewing the jib it can prevent the electric cables from twisting make one and a half cycles slewing to the right then adjust cam 4 and check up its motion until it depresses the corresponding contact 5 b Adjusting the left slewing l
17. J L i t 1 sio e 6 Ol Vb Nd ae 340 ta ou SS MOX NN dH 9 9 e 4 0 4 024 02 613 61 811 81 613 6 663 1 861 11 183 01 61 6 63 8 0 4 861 9 104 6 901 7 625 6 q 3H 96 60 1H 80 LOE 90 Goe Yoe 0 C 0 LOE 70 ele ut 164 064 708 ele uc 80 Ht goe 80 216 0 We LOE LOE dn4sl poe 0t x toe zoe eoe 70 LOE 90 908 NS 6 e e e c 61H zY zY zY zY zY zy LY Mex au qu 181 X p IY HY p LY ZO de e rur LY LY 9UA QU andea N 2 19 d di a i PE ni Y eS elj l 29 DAX qux Lean fh TELEN Uu 9 L 4 as e e e c i zai IEE a A e eel 8 a ga LU 1 15 alls c m v 19 67 es T T i T T ln T T A T T EET 91 TT ul uU TAE 1 5 U 1 d CAAA ral gp 419 E 06 0 1 y 9S1S0 4H 9 H 019 918 6 89 01V Y 8Y 14 91 11 71 FCH 11 13 01 9vH 6 7SH 8 SPH L vYH 9 EPH S CH v CUI 0cH
18. Note Reeving the rope must make tact namely work three minutes and stop two minutes 5 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL I composing of hoist winch 1 limiter 2 drum 3 reducer 4 undercarriage 5 motor 6 disc brake 7 cool motor Fig 5 1 1 5B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 1 Hoisting drum The surface of drum have fold line score in order to limit the across enwind point of the each layer rope on the circle of the roller when reeve the multilayer rope the two positions is at a distance of 180 the others parallel reeve with the side plate of drum and may confirm the next lead angle of rope It makes the load distribute uniformity between rope loop and reeve rope in order reeve the multilayer five layers rope smoothly and tidily The drum passes the bearing of bearing block 2 Drum The reducer is making up of the spiral bevel gear pair and primary planet gear pair the box of reducer linked with the frame 3 Motor The three speed motor is TSYDE180L 2 4 16 The output of motor is 24 24 5 5KW There is a disk electromagnetic brake on the tail section of motor the motor is make up of the three stator winding and its rotate speed are 2800r min 1400r min and 300r min 4 Hoisting limiter This winch equip with the DXZA 7 type multifunction traveling limiter the drive ratio is 1 1 274 adjusting limiter related in the chapter safety device 5B 4 STT113 TOWER CRA
19. Opening the bidirectional hydraulic lock at same time and make piston of cylinder upwards movement the hydraulic oil of the cylinder s big chamber reflow via the bidirectional hydraulic lock high pressure glue pipe assembly combine change valve H and T the telescoping cylinder start down work Adjustment of the restrictive valve of cylinders confirms the down speed 9B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL IV Operating and maintenance 1 Connect the motor s main power supply exactly make the motor wheeling comply with counter clockwise check the motor s turning by point movement method observed from shaft extent direction Open the cover of the hydraulic air filter and fill the clean and appointed hydraulic oil from it connect the hydraulic telescoping system pipeline according to the hydraulic system elementary diagram and screw down the joint test run and notice the hydraulic pump station whether in normal work condition The cylinder maybe jogging at beginning here need to turn left the airbleed screw at air bleed hole of cylinder and spurt some oil Operate it several time if it didn t jogging please tighten up the airbleed screw rightward check the telescoping flooding valve pressure adjustment of telescoping flooding valve is 40Mpa before leave the factory have no need to adjust in service But you can adjust demand pressure depend on need adjustment of the down flooding valve is 6 5Mpa namely be observed the p
20. Operating and fault clearance of slewing mechanism RTC 1 Notice for operating 1 This slewing mechanism adopts specific slewing controller electronic block in control loop It can automatically ensure the stably acceleration and deceleration when starting up or braking it also can prevent the tower crane from abnormal running such as emergency stop suddenly reversion Thus it is very important for the correct and reliable wiring of slewing controller electronic block control 2 Check up and maintain regularly before clearing the failure it is forbidden to use the crane any more Otherwise it may cause serious damage for driving parts and structural parts even result in serious accident 2 Failure diagnosis and service methods for RTC mechanism When operating the RTC mechanism in normal range if the slewing is in abnormal condition cut off the power first and then inspect from the following aspects 1 The crane can but running in single direction after stopping a period of time another direction can running after running a period of time only running in single direction again If in such condition stop the crane immediately and cut off the power to check that whether the two lines between joystick and electrical control panel cener tap of potentiometer and earthing terminal connected up 2 The slewing running of tower crane in one direction is fast than another or once switched on the slewing air switch RDi the slew
21. S e Attracting when power on ia UNS A Release when power down o Keep former attracting state 7B 7 L dS1S0 0d 1V LM 911 GLI an el LI 011 601 01 601 01 vit 01 ozi 1 Lu 011 vi 95 e 11 11 11 11 1X3 e41 dX d Ly Ly Ly e pay 1 1 4 e Hz 19 Yl v dv ph 21 Ag k x 41451 1x9 41 491 MIT ATX dx po gt ez 19 eh fer e Wel er gy XL e MENI XN 2409 AGS A y 9 ZHOS ASH 5 n ny 7 e Jiz 1 FD d y 11 edi l Te 21 qg e e e Lt 9 91 s DEDA 82 Lv DERDE Y U 1 U 1 U U ONIS 4 01 __ w 9 ts T I6 0 LO v3 0 h i e y e e C 8S1S0 0d 1V 97 TA vol 461 ua 071 611 811 601 601 601 10 bel 101 vZ1 601 601 601 IZL 601 10 021 201 EZI 601 9211801 021 801 101 611 Z01 zi 021 021 i 8l 601 9 8 91 TOZI SLL 911 GLL A441 94 11 11 zy 11 zy 11 UN 11 H 41 _ 01 1X HT Ly Ly Ly LY Ly py jee Ly L
22. around the pulleys while hoisting a load b Check for broken rope and surface abrasion c Check for erosion of rope 10B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 4 Internal inspection of the wire rope It draws a conclusion from the experience of inspection and discard as useless of wire rope that internal damage is mainly caused by the erosion and fatigues that is the primary reason of wire rope invalidation Internal damage degrees might not be discovered by external inspection even if the wire rope is impending the danger of broken completely The person in charge should carry out the internal inspection The method of inspection is as follows Firmly clamp wire rope by means of two clams in a certain distance screw the clamp so that the outer layers of the rope are divorced from the core of wire rope When the wire rope is untwisted slightly clean out the grease and the bits in the rope by using a screwdriver so as to effect observation easily The items to be inspected are as follows A Internal lubrication B Degree of erosion C Steel wire impress due to extrusion and abrasion D Confirm if there are broken rope then restore it to its original state Then grease on the surface This method will not be adopted on the wire rope with multiple layers 5 Inspecting the ends of wire rope except for riggings and slings It is very dangerous if the wire rope from fixing end is rotted therefore this place
23. by stress changing Increased diameter of a parallel winding wire rope results in distortion to the metal core due to sudden stress thus caused Corrosion and signs of wear are often noted on the external layer of the wire rope Example of serious bending of the wire rope Basket slacking nest of a multi strand wire rope twisting resistant type caused by forced rotation of the wire rope reeving through too narrow races or an excessive deviation angle STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter XI Slewing ring Periodical inspection for fastening bolt of slewing ring type 011 40 1120 Frequency of inspection After the initial 100 hours running of the slewing ring the pre tension of the bolt should be inspected Then it should be inspected once every 500 hours running Enough pre tension should be maintained At the same time the pre tension of the bolt should be inspected each time when the tower crane is to be mounted and dismounted Method of inspection Should the machine be in service make sure that the bolts to be checked are not exposed to a tensile strength due to load or counter weights Using a torque wrench and if required a torque multiplier check that the tightening torque of the bolts corresponds to the values as listed in the table 11 1 1 Occasional replacement It may happen that during an inspection one or several bolts show a tightening torque beyond the minimum and maximum torque
24. cause the mast twisting and jib swing So acceleration and deceleration operation should be done gradually d It is forbidden to stop the jib by slewing brake It should decelerate first and then release the control lever so that the brake can brake in minor slewing speed e The slewing brake can only be used in windy condition it can keep jib in its position f When slewing the jib it is recommended to operate the lifting movement and lowering movement at the same time to avoid distorting of the wire rope and it is convenient for the rope swivel to work g Stop the slewing movement before slewing limiter start to work 4 Operating the trolley winch a The trolley speed is selected by the distance of the trolley b It must accelerate or decelerate gradually to avoid swing when suddenly changing the shift of trolley operation Stop the trolley movement before operating the trolley limiter 3B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 5 Operating the traveling mechanism a The traveling speed is selected by the distance of traveling b In order to ensure the tower crane safety when it traveling in the track the trolley must be at the jib foot if operating in the track curve beside keep the trolley in the jib foot it must travel with low speed Meanwhile it is forbidden to keep the jib facing to the inside of curve track c Before traveling to the end of the track the tower crane operation must be stop
25. necessary to hoist a load in fixed point As the button was pressed apply the slewing brake which made jib fixed in place well and truly But the premise is to stop the jib absolutely by button XRFS so as to prevent the mast tower from distortion In the left joystick the trolleying and slewing are operating at the same time The control lever can switch in various directions The trolley moves ahead DVA as push the lever ahead in reverse DAR the jib slew to the left RG as push the lever towards left RD In reverse The lever can be pushed at random towards left or right without limit of shift The bigger the turning angle of the lever is the faster the speed of slewing will be The lever can also pushed in oblique direction to be controlled in the form of which drive both the trolleying and slewing operate in 2 direction at the same time There are locking mechanism and zero protective devices for preventing the lever from unconscious movements which is likely to run mechanisms and result in accidents The power supply cannot be started if the lever is not in neutral zero position Take hold of the lever as shown in figure and lift locking pin up with finger then push the lever Before raise locking pin it was strictly forbidden to push the lever lest parts was destroyed The levers on both the left control panel and the right control panel have the function of auto reset returning zero 3B 15 STT113 TOWER CRANE OPERATION AND SERV
26. 3 00 3 00 1B1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL H m 9 130 26 1244 76 ile Him Ba Hm TT D m Haee 112 26 hd 8 40 26 8 41 16 Hm Bd Bg M 1038 76 39 66 oz P i 5 9 36 66 i d Al ae Be 9135 76 6 35 16 36 66 x 1 2 8132 76 m 8 33 66 76 26 bd bd 27 5 31 26 3 3216 2 21 2 2 nu 7 30 66 i ro 4 28 26 dpud 916 T ig IE 18 E amp 16 26 76 n 6 27 66 Wm T S 325 26 al 26 16 58 26 lt A i 5 23 76 I 5 24 66 1 2 1 212 22 26 1 2 1 22123 16 13 E E 13 LIA 1 6 1 64 20 76 11341 4 21 66 13 11 n 11 1119 26 Pier 1120 16 7 x 317 76 Ls 3 18 66 6 6 6 6 6 Q als 1 6 1 6m En 5 5 5 5 SE 16 26 214 76 ES 143 1 2 15 66 735 14 4 4 4 4 x 111 76 1 12 66 aii 1 In i E 55 als x Bs SE x E A 4 5 4 4 5x4 A J r3 ZA VZA3X Table 1 2 2 Type Stationary type Travelin
27. 3 LJ1004 LJ1005 L41507 1 45 Om 1 40t LJ1002A LJ1003 LJ1004 LJ1005 LJ1507 a 42 bm 11002A LJ1003 LJ1004 131507 E1508 Fm 1 609 a 40 Om 3 LJ1002A LJ1003 LJ1004 LJ1507 LJ1508 N 806 37 5m 1 904 LJ1002A LJ1003 LJ1004 LJ1507 EBIN 35 D S 101002 LJ1003 LJ1004 51507 N a 30 Om j 2 354 E 101002 LJ1003 LJ1004 N 1 3 10d Fall ene POM 20 25 0 30 0 35 0 137 5 40 0 42 5 145 0 47 5 50 0 152 5 IV 12 76 6 00 3 52 2 67 2 12473 1 574 43 4 314 211 114 03 0 95 52 5 71 23 05 3 00 13 002 72 2 164 77 1 62 48 1 36 1 26 1 16 1 08 1 00 IV 114 431 6 00 4 09 3 132 49 2 051 87 1 7111 581 46 1 35 4 25 50 0 71 126 18 3 00 3 00 3 00 2 54 2 09 1 92 1 76 1 63 1 50 1 40 1 30 q7 LIV 1445 6 00 4 103 132 50 2 05 1 87 1 72 1 58 1 46 1 35 7 5 71 2622 3 00 3 00 3 00 2 55 2 10 1 92 1 77 1 631 51 1 40 150 IV 15 06 6 00 4 31 3 30 2 64 2 17 1 98 1 82 1 68 1 55 5 0 71 127 38 3 00 3 00 3 00 2 68 2 22 2 03 87 4 73 1 60 IV 115 53 6 00 4 4713 432 74 2 26 2 07 90 4 75 42 5 1 128 25 3 00 3 00 3 00 2 79 2 3112 11 1 95 4 80 100 LW 15 24 6 00 4 37 3 35 2 68 2 202 01 1 85 9 71 2772 3 00 33 00 3 00 2 73 2 25 2 06 4 90 IV 15 72 6 00 4 53 3 48 2 79 2 29 2 10 37 5 1 2862 3 00 3 00 3 00 2 83 2 34 2 15 IV 15 75 6 00 4 543 492 70 2 30 35 0 71 28 67 3 00 13 00 3 00 2 84 2 35 IV 17 12 6 00 5 01 3 86 3 10 30 0 71 130 001 3 00 13 00
28. ANUAL Chapter VII Trolley winch Explanation of symbols 00000 m 7 2 Composition of trolley winch and its working principle TB 3 Trolley brake HMM eem 7B 5 1 Working principle of trolley brake m 7B 5 d E abes dpi taba cede 7B 6 7B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL I Explanation of symbols D T CL E Locked rotor torque Eddy current speed regulation Variable voltage speed control Trolley winch Description The trolley speed should be selected in accordance with the trolley distance It is necessary to acceleration or deceleration gradually 7B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL II Composition of trolley winch and its working principle Trolley mechanism DTC consists of a drum a planetary reduction gear and an torque motor on which shaft extension end and rear end respectively equipped with a bow wave brake and a disc brake supplied with direct current see Fig 7 1 1 Taking advantage of various resultant of moment characteristic and bow wave brake the trolley mechanism driven by the torque motor allows 3 speeds The first speed MV is obtained by the resultant of field excitation of bow wave brake and running of the motor under voltage drop 230 260V The second speed PV can be obtained by resultant of field excitation of bow wave brake and running of motor under rated voltage 380V When the motor run under rated voltage 380V
29. ATION AND SERVICE MANUAL V Slewing brake 1 Manual brake release see fig 6 4 1 1 Start the weather vane device a Raise the brake lever 1 i e act A b Push the button 2 and make it stay under the brake lever 1 c Release the brake lever 1 and make it stay on the strap clamp 3 then the brake lever was locked by brake lever Finally pin the strap clamp d Release the pressure on the push button 2 No clearance is allowed between the button and the brake release lever 1 Otherwise the operation must be carried out again Readjust if the clearance still remains e When the weather vane effect has accomplished the slewing mechanism should be allowed to rotate freely 2 Release the weather vane device a Raise the brake lever 1 i e act A b Under the action of spring 4 the strip clamp 3 came out c Release the brake lever 1 d When the weather vane effect has accomplished the slewing mechanism should be stand still 6B 8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Working principle 1 Brake engaged 2 Brake released Cw M Bini AST SSS AE LI c _ 2 2 SS ee AAA Eh f S S WS Note is the clearance of brake which value must be kept between 0 8 1 2mm Adjust it if necessary 2 Electric starting of weather vane device Description It is an electromagnetic brake which is braked when switch
30. COMMON WIRE ROPE DEFECTS 10B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL I Description Although its structure is compact and its appearance is strong the fatigues and wear of wire rope is unavoidable The worn and aging wire rope will damaged rapidly which would result in severe accidents both on person and equipment if the users do not pay special attention to it The change of the wire rope can be found by periodical inspection For the hoist equipment the wire rope should be taken as a kind of expendable They should be changed as its intensity and strength reduces II Fitting wire rope The type and specification of new wire rope should be the same as the original one If not the user must ensure that the characteristics and the capability of new wire rope is not lower than the original one and the new wire rope is applicable to the groove of drum and pulleys Prevent wire rope from knotting twisting together and buckling or adhering sundries when drawing out the wire rope from scroll or wire rope roll Before using the wire rope of the crane the consumer should ensure that all kinds of the device involved with the work of wire rope are in order and run properly normally In order to keep the wire rope in place steadily operate the crane to hoist 1096 of rated load for several times 1 Fitting new wire rope 1 Completely unwind the rope on the clean ground avoiding any twist see Fig 10 2 1 If it is not possibl
31. Cycle Inspection item After after each Before everyday work A month changing fall erection Load limiter V V V V Moment limiter V V V V Hoisting limiter V V V V Slewing limiter V V V V Trolleying limiter V V V V Traveling limiter V V V V Prevent rope V V V V broken device Prevent pin V V V V broken device 3B 12 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 4 Lubrication Inspection item Cycle After each erection A month guide pulley of hoisting wire rope M bearing or axle box of hoisting drum lubricate the grooved clutch Hoisting gear V V winch ball thrust bearing of prevent V V twist device for hoisting hook hoisting wire rope V V the prevent twist device of wire n V V rope for jib end Slewing slewing ring V mechanism external gear ring V V bearing of drum V trolley guide pulley V Trolleying wire rope V winch The tensioner or tension spring V of the wire rope hook assembly V gear ring on driving bogie V wheel Traveling roller support of driven bogie V mechanism and motor ball gear ring for track curve V device Cable drum bearing of drum V Safety pin spring pinion prevent rope V device broken device hinge of cabin door turned door V pivot joint track wheel rim side of the bogie V 3B 13 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL V Operation 1 Control panel layout and operating method Th
32. ICE MANUAL THE RIGHT CONTROL PANEL IS EQUIPPED WITH Power supply button also horn button symbol warning light VOI and break button emergency button O To begin with turn the emergency button to the right till it was sprung out Then press the power supply start button The power supply of the tower crane was started main contactor P of electrical control panel A start work while the horn hooting and warning light shining When press the break button the emergency button O the power supply is turned off main contactor P of electrical control panel A is released The break button cannot reset turn back automatically If required turn it to the right until it springs up by itself Press the button to cut off current when the crane is out of service or to meet the emergent requirement such as the contactor attaching mechanism is out of control or other emergency requiring current break As shown on the panel the lever can be pushed in accordance with T instead of that is the lever can not be pushed in oblique direction Push the lever forward to lower the hook When the lever is pushed to the left or to the right TAV TAR the travelling control of the crane is effected But for the anchorage or climbing crane there is no such kind of control lever installed And no control circuit is set on the panel 3B 16 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Precautions during operation 1 Observe the s
33. II Operation instruction 3B 4 IV Precautions during operation m 3B 7 1 Each time before operationem 3B 7 2 During operationem 3B 7 3 Each time after operationem 3B 8 4 Periodical inspection item sem 3B 9 V Operation Hee 3B 14 1 Control panel layout and operating method 3B 14 2 Precautions during operationes 3B 17 3 Operating method for weather vane effect nnn 3B 18 3B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Important declaration A thorough debug must be made upon finishing the installation and erection of the tower crane The tower crane can only be put into service when it is approved by local safety authorities with the issuance of license I General rules Tower crane driver must be the qualified professional who has trained by authoritative board of labor or specified units and passed the exam The driver must operate service and maintain the crane correctly It is important for reducing failure improving device availability avoiding loss of working time and prolonging service life of equipment Incorrect operating will result in damage of all electric motor reducer drum brake and wire rope even the integral steel construction What is more it may cause serious mechanical accident and result in personnel loss 3B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL II Operation highlight a b c d e g h i Control panel is finishing equipment It must be careful when
34. L 10 on the ground 2 Lift the max load hang in the air and drive the hook to the marked radius L Adjust device C 3 Drive the trolley to the jib foot then trolley out with as wan wan wan antamanaan d rated speed Before reaching marked L the trolley motion should be cut off otherwise readjust it 3 Adjusting the moment limiter RDMO which decelerate before reaching the max trolley radius when trolley out ES Lift the load X at the jib center then trolley out with RN rated speed and adjust device D see fig 8 5 1 so that the trolley can running with low speed instead of rated speed as soon as reaching the radius D D 0 8Dmax Note a The load X W and radius L are selected according to the jib length and falls See table 8 6 3 8 6 4 b Adjusting the device A C and D Unscrew the nuts and bolts until the bolts can touch the contact of moment switch but can not cause circuit break 8B 12 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL VI Load limiter Purpose The structure and hoisting winch of the crane are calculated and designed in accordance with maximum load It is not permitted that working load exceeds the maximum load The load limiter MSWL is a safety device to prevent the crane from overload 2 Working principle When passing the pulley of the load
35. MANUAL 4 Greasing the wire ropes The wire ropes must be greased every 6 months or in general each time when they seem to be dry or tend to oxidize We recommend to lubricate them very moderately using RCF grease and RC grease In case of a longer standstill it is possible to protect the rope by spraying P grease Detailed please see chapter X fixing and testing rules for rope S Maintenance for hydraulic pump station when starting N oil level draining lubricating x 1 year 1800 hours N Maximum NY Minimum VY Minimum 12B 7 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Because of different working environment temperature hydraulic lubricant of using by Hydraulic unit should be different The user should be added proper hydraulic oil according to the environment temperature Number of hydraulic oil environmental 30 20 C 20 10 C 10 0 C 0 20 C 20 38 C 38 80 C temperature YB N80 Code YC N46D YC N32 YB N32 YB N46 YB N68 above N46D N32 Above N32 N46 N68 Low Low N80 Antiwear Antiwear Antiwear New grade freezing freezing Antiwear hydraulic hydraulic hydraulic point point hydraulic m oil oil oil hydraulic oil hydraulic oil oil Original grade 30D 20 20 30 40 250 6 Rope guiding Before using the rope guiding pulley grease at the oil fittings and supplement grease every 50 hou
36. MEZ Windscreen Wipe GE Socket MBAR Control Fan MA Fan Control DC Power Supply Bt Bip DC Power Supply 106 WIRING DIAGRAM or 03336 THE CAB ooo wo sron SIE p z UPS TFT DATE Y 0 G M A 0 MDR SLCL 2 ES MONITOR EY P P e P gt C C 0 c C C C C C Q gt C C r r c 20 SIGN DATE DISPLAY WIRING DIAGRAM LOAD D333A DATE 060629 Page of YONGMAO STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter VIII Safety device 3 7 Adjustment quel LIP d ctu d ere IA Dam toe IV Trolley limiter 3 Structure instruction and its working principle 4 Service and Maintenance rere n9 8 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL I Introduction The safety devices of tower crane are important devices which ca
37. N N alarm N mine 0 82 Signal output socket wind speed 13 20 m night light limit p WS 2 Tower crane anemoscope Signal display wind sensor 8B 17 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter IX Hydraulic system I Composition of hydraulic pump station 6n 9B 2 Basic technical parameters een 9B 3 Working principle ENS NC Sard eh dn ea ees aaa 9B 4 IV Operating and maintenance s ee ed o dau eun ausa erede a itas 9B 6 V The common failure reason and its clearance 9B 8 9B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL The hydraulic system of ST series tower crane is composed of hydraulic pump station telescoping cylinder joining hose and so on I Composition of hydraulic pump station It mainly makes up of oil box filter motor oil pump combination reversing valve pressure limiting valve and pressure gauge 1 Motor 2 Electromagnetic starter 3 Combination reversing valve 4 Name plate 5 6 Oil box Temperature gauge for liquid lever 7 Oil outlet 8 Lifting point 9 1 m V 0 A Hydraulic air cleaner Pur Ee M 0 High pressure hydraulic J gp fluid connection x 11 Low pressure hydraulic fluid connection 12 Pressure relief valve 13 Pressure gauge Que 0N
38. NE OPERATION AND SERVICE MANUAL 6 Electrical schematic diagram figure description see table 4 1 2 Table 4 1 2 Name Figure Name Connecting terminal HF box Connecting terminal HF box Connecting terminal L Panel Connecting terminal D box Connecting terminal R box hailer Auto cut off switch for over q Circuit breaker button switch for emergency stop loading Button switch for closing travel S Control for lever ET Button switch for breaking off d nO for squirrel E Time Ne Brake DC exciting coil amp Time po Eddy current brake coil e Time E Coil for contactor and relay Time Es Eu s ub m x Conigtor Ge acting the coll Anemoscope N O switch c Varistor N C switch F Potentiometer Main contact of contactor gt Rectifier diode 44 Three phase autotransformer s Thyristor silicon control socket Socket Cross connection No cross connection Earthing 4B8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 7 Wiring diagram and list of installing cable for tower crane see fig 4 1 1 The consumer can intall the cable according to this electrical schematic diagram non traveling type of tower crane RDMO
39. NE OPERATION AND SERVICE MANUAL II Characteristic parameter working level M5 using grade T4 load condition L2 motor type YSYDE180L 2 4 16 motor speed min 2800 1400 300 raising speed and 80 40 8 5 load m min t 1 5 3 3 m min 40 20 4 2 t 3 6 6 rope diameter 12mm rope capacity of drum 400m 5B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL working principle of hoisting winch Three speed motor of hoisting winch drive the drum to running by reducer The electric interlock control panel control the hoisting winch to carry out three raising speed and three lowering speed It is low speed intermediate speed and high speed When start up the low speed motor 16 grade the stator winding and disk brake coil be made contact simultaneously declutch the brake then startup the hoisting winch by low speed MV Thereafter its may switch to the intermediate speed motor PV and may continue switch to the high speed to work GV in light load condition When stop motion the electric control make the time which the brake affected lag 0 5 1s in order to prevent braking intensively to damage brake The intermediate speed shift PV and high speed shift GV of hoisting winch is work shift The low speed PV used to start up and low location generally it is not allow work long time IV Adjusting brake of three speed hoisting motor see Fig 5 1 2 D Adjusti
40. STT113 TOWER CRANE II OPERATION amp SERVICE MANUAL 2007R32 Fushun Yongmao Construction Machinery Co Ltd Chapter I Chapter II Chapter III Chapter IV Chapter V Chapter VI Chapter VII Table of contents Tower crane parameter and structure 1B 1 Safe rules of tower crane snares 2B 1 Operation E cee TESA 3B 1 Power supply and schematic diagram 4B 1 Hoisting Wy NC Does nori dose mper ehe Rc tt E obe ph ela 5 1 DIS WANS Teclanbst TE 6B 1 Trolley WINCH once de baee RUE Le CET 7B 1 Attached Electric diagram Chapter VII Safety device sauce dre b EORR ED aeree ve Sta 8B 1 Chapter IX Hydraulic system cedere estet intus 9B 1 Chapter X Fitting and inspection rules of wire rope for hoisting Chapter XI Chapter XII machine yaara 10 1 DIC WINS TINO REN 11B 1 Tower crane maintenance 12B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter I Tower Crane Parameter and Structure I Main performance parameter and external dimensions 12 5m 54 2m Loading capacity H CET N E9808 21005 5 5 c omy a 50 0m EO LJ1002A LJ1003 LJ1004 LJ1005 101507 E1808 N 47 5m LJ1002A LJ100
41. Soes ey 98 i 19 Y ul MOV ava 240 FOYA A 103815 9 8 es 5 93 izTufs rn s D IN sed oy ed en Oc Oz tz Eh 7 D Ot os s zs EG TTTTT 1 T TTTTTTTT 893 4 L L L uy ond owas VA KA VS el vi sif 91 91 St LIT 04 En 31 2 4 2 1 AVS aydas vox TUM dd i i ZHOS 086 918 9 1H 9 ChH 2 1 6H 6 8H 8 LH L 9H 9 SH S tH H CH 2 4 3H GH El OSH Z1 9pH 1l SyH 01 vYH 6 vZH 8 1 6 9 EZH S LCH E OZH 2 1 3H 9 H 6 68H v rH 19 1 161 11 S H 01 6 611 8 63 1 94 9 61 6 4 1 1 6 13 1 yuq 3H 6 98160 3H 95 GEE ves EEE TEE LEE 085 63163064 eet vee eee vtt 111 eee vtt 10 XN x cee 4 ut web 5 t wo VARA esl P ape E M ut wt 71 r A Add Ada X Ada D end zY Wiz T d VANG 1 pics I 193 193 054 ma E A i U t T v1 un TNT HM 89 AVG as 1039 9 yo LS XN x x 4 dd VN od 19 e amp o e eae m4 i 7 el Mq ANC ayq 11 l vL Le vi A9q e4q 15 1 2 tv 57 zE 16 8 6 92 sc 79 g J 5 T T T T T CO T T T CO U J 19
42. Y ath 29 T Ad 1X LM L 1X 11 I 19 X H1 it 11 IE Jiz Y T v8 v1 vt v9 Adax 1 9 A 01 a1 yor v1 4 5 v v 8 1 et 9 2 E yg tsli rs ty e Ad 91 11 85 H1 H1 01 HS TIT ts T gg ey 12 18 670 e e g e 0t 67 agh UL X Oz v V d up tec cdd qi ais _ HIS i 60 19 19 2 17 iz 07 CN 12 3 as HS 1YN 1 4 01Y N Uu e e e e ey 99190 0 1 101 901 0 v0 01 701 0 vit j e o x e p xj 131 9 v ET VET Se T eS n c le l 2 29 qc 111 q P e Y PX X o S 10 l e 1y ely af n sva en 1 if oy af v WAT t o IS 0 Nd d d d N 9 Y d bS1 1 0S1 Z1 9 1 V Sv 1 01 vv 1 6 ev 1 Z 0 1 9 c1 8 00 1 Lc 1 021 2 1 3H v S1S0 9d 1V 601 801 4 mm ap e gs A0c9Q v c a 0 Ua 9 y 2 TER z v6 l 4q 821 871 Adax Mari HH 4 e j 9 7 9 ly k 9 x eax Y spay 2 AM AMD us ua dy ES 9 uan i 9 41 LAYOUT OF HOIST SUPPLY POWER TSFuP TSFul RedFu RedFul LFU XBa Circuit Circuit Circuit Ci
43. afety operation regulations strictly during the operation The operation which might influence the safety of the crane is absolutely forbidden For example raise a load buried in the ground slings rope clamps are not in line with relative requirement or is damaged the load is not bundled or colligated firmly raise a load in oblique direction or operating after drinking and so on 2 During all mechanisms operation it was forbidden to use lower shift for a long time not exceed 10 seconds according to the regulation the shifts should be increased or reduced gradually the time between two shifts should not less than 1 1 5 seconds During lifting operation switch frequently between shift 4 and shift 5 is not permitted lest the part will be destroyed It is important that nurture good operating habit When move the trolley do your best to switch from shift 1 to shift 2 then shift 3 and in the slewing operation the control of the lever is required to be handled harmoniously In any case It is absolutely forbidden to operate in reverse direction make return suddenly or to press brake button forcibly during the running of the jib 3 Set the tower crane in the state of weather vane whenever this shift s operation is finished 4 During the operation provided that the crane falls into the trouble please call on service man or the mender in time It is forbidden to operate the crane with malfunction In any case for all kinds of safety devices
44. and bow wave is without field excitation the third speed PV is obtained When the trolley mechanism begins running the winding of electromagnetic brake remains current fed so that gag bit is attracted The motor brakes as the current is cut off The movement clearance for the gag bit of the brake is 0 8 1 2mm Adjustment of the movement clearance is similar to that of the brake of slewing motors Adjustment of locking torque of the brake is carried out by adjusting spring canister 14 Proper torque clearance can maintain the heavy load under control and the attraction without any difficulties at the same time 7B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL M 2 3 4 5 6 7 8 9 I Mb C2 1 C 23 u i NJ 21 20 19 18 1 16 15 1413 Fig 7 2 1 1 Outer support plate 2 Connecting bar 3 Drum and cabinet for reducer 4 Pinion for travel switch 5 Inner support plate 6 Travel switch DXZ 4 FW 7 Eddy current brake for motor exciting voltage DC20V 8 Motor synchronous speed 1500r min 9 Brake of motor field exciting voltage DC20V 10 Locking nut for wind tunnel shield 11 Hand wheel for manual release brake 12 Nut M8 which locked the hand wheel in service 13 Screw M8 which simultan
45. and even not found the broken fiber when the rope diameter decrease 7 or more relative to nominal diameter 9 Outside and inside corrosion a Outside corrosion The corrosion outside the rope can observe by naked eye The rope should discard as useless when the surface appears chasm and rope quite loosens b Inside corrosion Check up the inner of rope the rope should discard as useless if it confirmed inner corrosion badly 10 Distortion The ropes lose the normal switch and produce the visible freak owing to mechanical damage or local fatigue in rope using which can result in rope inner distributor of stress asymmetry familiar there are undulation cage shape distortion appear in multilayer enwind rope steel wire force out rope diameter local accretion kinking rope diameter local minish part crushed and kink The rope should discard as useless when appear above phenomena 11 The vitiate resulting by heat or electric arc effect The surface of rope in annealed condition duo to the heat factor the rope discard as useless on account of electrical are welding contact broken wire and broken wing of rope 10B 11 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL VII Equipment condition for Relevant rope Should periodic check the enwind drum and pulley in order to make these parts well running on bearing Dig or locked pulley or turn part arouse rapid aggregative wear out and uneven so result in the rope serious abrasion All radius
46. at jib site when the tower crane is operated by trainees or learners 5 The installing debug and maintenance of electric equipment must be operated by competent electrician 6 The debug and maintenance for each mechanism must be operated by professional 7 The installing debug and maintenance of hydraulic device must be operated by experienced professional 4 The safety rules during working stage 1 Every time before starting up a Give audience to the order of job site supervisor b Switch on c Remove cushion block loosen the rail clamping device and other fixing device wind speed lt 13m s d Check that is there any obstacle on the track e Cancel the jib weather vane condition f Check that are all the protective device and safety device in normal condition 2B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Inservice a The driver should operate the crane in the cabin b Test the motion of each mechanism with no load and low speed meanwhile check that whether the brake is sensitive before lifting load C It is forbidden to use any operating mode which can threaten the tower crane safety d Before traveling drive the jib to the center line of the track e It is forbidden to pass load over the person when the crane is in service f It requires someone to guide when the load is out of the sight of the driver g It is forbidden to sling overweight load out of the specified rad
47. cting reliable e Before lifting load check the sensitivity and reliability of the brake 2 Operating the hoisting winch a Confirm the lifting load radius according to the moment curve or table b Estimate the weight of lifting load Lift the load 1m high slowly in small radius Move the load forward slowly by changing radius of trolley with low speed Stop forward movement when moving to the position of moment limiter Confirm the radius of trolley stopping Estimate the weight of load according to moment characteristic diagram table and radius c Use the Min lifting speed before the wire rope tightened up d Use the Min lowering speed when lowering load e Use the medium speed when start lifting after load taking off the ground or be over lifting f If the height is allowable in normal lifting use the rated speed of motor instead of medium speed 3B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL g The speed was selected by the weight of load Heavy load selected low speed PV and light load selected high speed GV h Stop moving before operating the stroke limiter 1 Don t put the hook on ground j Loosen the wire rope slowly to avoid rope winding when placing load 3 Operating the slewing mechanism a Select the slewing speed according to the shift to be reached b Every time use the max speed as long as the angle allowed c If the slewing mechanism suddenly changes its speed it may
48. e cabin equipped with electrical control panel HF and seat There are left control panel and right control panel on both side of the seat they are also called joystick There is a control lever in the center of the joystick see fig 3 2 1 layout of control panel and fig 3 2 2 schematic diagram of lever operating cabin 4 Parallel connection button 5 Slewing brake button 2 Power off emergency stop button 3 Power light RG Slewing to the left RD Slewing to the right DAR Trolley in LH Hoisting LD Lowering 1 Power supply and hailer button DAV Trolley out Traveling backwards TAV Traveling forwards See fig 3 2 1 Locking mode es zo Operating mode See fig 3 2 2 3B 14 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL ON THE LEFT CONTROL PANEL 1 Parallel connection button SH Graphical symbol with functions as follows The button is used in the special case such as telescoping changing fall and so on When move the trolley to the jib foot or raise the hook to limited position the limited switch cut off Press the button SH so as to continue moving the trolley to the jib root of the crane tower or making the hoist hook to a highest position until finishing the aforementioned job 2 Slewing brake locking button XRFS Graphical symbol 6 with functions as follows In the windy working circumstance and the speed of the wind is under 20m s it s
49. e moment motor is with eddy current brake and weather vane brake Weather vane brake can be brake and released automatically or manually Electromagnetic brake is released when power on and brake when switch off After slewing operation the brake is always released when power on During operation adopt the slewing brake in specific conditions to protect the crane from wind The slewing brake must brake after the slewing stopped completely when wind speed is less than 13m s After one day s work open the weather vane electromagnetic brake automatically or manually make the tower crane enter into weather vane effect 6B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL The armature of bow wave brake of the motor runs with shaft The Electromagnet of bow wave brake produces magnetic field in the air gap 61 around the armature when the excited loop was supplied with direct current The armature incises the magnetic field so as to form potential field and then current that is bow wave is obtained Because of the action of the magnetic field of bow wave and the magnetic field of Electromagnet to one another produce brake moment that is directly proportional to excited current and rotate speed of the armature Regulating excited current and voltage of motor carry out stepless speed regulation of the motor 1 moment motor planetary reduction gear weather vane brake slewing ring AN trave
50. e specified in operation manual and replace some parts and devices according to the regulation 2 If it needs to service and maintenance the tower crane with power outage adopt necessary measures to prevent false starting of the crane First lock the power supply panel and take off the key Second hang warning plate on the panel 3 If it needs to dismantle some safety devices during service and maintenance after this it should be assembled and readjusted 6 Instruction for special dangerous 1 When operating tower crane near the air line there should be enough distance between the tower crane and air line a Once the tower crane connected with the air line the drive should stay in the cab to prevent from getting an electric shock b Drive the crane out of dangerous zone at once c Notify the person around don t close to the crane d Cut off the power supply which connected with the air line e Don t leave the tower crane unless you can confirm that the electric wire has been cut off 2B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Maintenance of the electrical equipment only can be carried out by qualified electrician or trainee which is supervised by a qualified electrician according to the electrical rules a The tower crane must be cut off the electricity during maintenance and repair meanwhile set up a warning plate of manned operation prohibit switch on on the obvious position of powe
51. e to lie out the whole rope completely unwind it in large loops In this way dangers can be avoided from occurring when the wire rope is wound on the drum 10B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Check the length of wire rope 3 Enwind the wire rope on the drum by means of a sling and fasten it with bulldog grips The length of the wire rope s jut from the last bulldog grip is no less than the tightening moment of the screws of bulldog grip is 9 mdaN 4 Apply Hoisting up operation to enwind the rope on the drum for 4 10 circles At the same time tension the rope properly Fig 10 2 2 5 Check adjustment of the limit switch and readjust it if necessary t ALE AG ABI FTO A Fig 10 2 1 Fig 10 2 2 10B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL III Maintenance Maintenance of wire rope depends on the purpose of tower crane the working environment as well as the kind of wire rope used If possible the wire rope should be purged and oiled or greased except otherwise stipulated by the tower crane manufacturer or the wire rope factory especially the bended and curved part of the wire rope that reel through pulley The kind and type of lubricating oil and grease should be suitable with that used in the wire rope factory For the wire rope the lack of maintenance is one of the primary reasons of short life time especially when the tower crane works in a caustic environ
52. earthing modes e A The earth substance adopts the standard earth stake either use 33 4 5 1 5m long steel tube or L70x70 1 5m long angle steel B The earth plate is made of steel plate or other stretched metal plate with an area of 1m It was vertically inearthed 1 5m depth from the ground surface 2 C Copper conductor with cross section more than 28 mm NA arr AME 2 5 us E or iron conductor with cross section more than 50 is inearthed in the wire casing The inearthed depth is to be determined by earth resistance In above earthing modes the copper conductor section coming from the earth substance should be more than 25mm If the soil conduction is poor inearth sodium chloride salt in the soil and pour some water For traveling type of tower crane each section of rails must be electrical connected and the two rails must be electrical connected The earth resistance is less than 4Q 4B2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Power supply capacity and supply voltage requirement The requirement of the lowest power supply capacity for each type of tower crane is determined by the hoisting winch Because of the different hoisting operating conditions the requirement of power supply is different It should be determined by the lowest power supply KVA for each type of tower crane The requirement power voltage
53. ed Adjusting the max load limiter SLCHPV 1 Lift load X with low speed 2 Adjusting bolt 3 until the bolt head touches the sensitive switch 4 3 Lower the load and add 10 to the load Lift it with low speed If the load can be lifted readjusted it Note For various load V W X and Y see the table 8 6 2 8B 14 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Load table for max working load limiter Table 8 6 2 SLChGV SLChPV MV V CON W ION X CON Y CON 2 1500 1650 3000 3300 24QPC15 7 poe 3000 3300 6000 6600 LA Adjusting load and radius table for the moment limiter Table 8 6 3 2 fall Hoisting moment Trolley moment limiter SM limiter SLMO SDMO I X Y W L L D L 4 00N 10N 103 m m 42 di 52 5 1000 1100 3000 23 05 25 36 50 0 1300 1430 3000 26 18 28 8 40 47 5 1400 1540 3000 26 22 28 84 38 45 0 1600 1760 3000 27 38 30 12 36 42 5 1800 1980 3000 28 25 31 08 34 40 0 1900 2090 3000 27 72 30 49 32 37 5 2150 2365 3000 28 62 3148 30 35 0 2350 2585 3000 28 67 31 54 28 30 0 3000 3300 3000 30 30 24 Table 8 6 4 4 fall Hoisting moment Trolley moment limi
54. ed off It has independent power supply Working principle 1 Brake engaged 2 Brake released ES Bey 6B 9 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Service and maintenance of slewing brake T V LADS TF L7 a Iz Attention There shouldn t be any foreign substance in the brakes such as cement sand grease etc 1 Unscheduled maintenance The adjustment and maintenance should be carried out under the following conditions a Insufficient braking moment which is caused by worn brake disc b The indicator is out of work 2 Scheduled maintenance a Every 200 hours or every one month once b Check the clearance and brake moment as well as the worn condition of the brake disc replace it if necessary c Check that whether there is some foreign substance in the brake such as cement sand grease etc 6B 10 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL VI Wiring chart of R box see fig 6 5 1 er z P n sd NLFa E rue Hive 1112 Ce 15 4 oad 9 IR 1 4 5 6 7 9 11 14 15 16 19 22 Terminal strip for the connecting box of slewing center R box Terminal Terminal dee 9s die 16 4T 48 49 46 Fig 6 5 1 6B 11 STT113 TOWER CRANE OPERATION AND SERVICE M
55. eous running with brake disc 14 Spring pipe which used to adjust the spring pressure of the brake 15 Pin for locking screw of the brake disc which inserted in the third and forth hole of brake disc 16 Protective cover 17 Spline housing coupling piece which connect the motor and transmission shaft 18 Bearing 80212 19 Transmission shaft 20 Reducer nominal speed ratio r 30 36 2 Bearing 60209 22 Reinforced seal PD115x140x14 23 Fixing wedge for trolley rope 7B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL III Trolley brake see fig 7 3 1 Description It is an electromagnetic brake which is braked when switched off It has independent power supply 1 Working principle of trolley brake Exciting coil Spring Release nut Moving armature Friction disk Brake disk Brake lining Screw Protective cover E 00 10 Fig 7 3 1 Braking When the exciting coil switching off the electromagnetic attraction disappears The brake spring 2 pushes the friction disc 5 then the brake disc 6 enters into brake state Brake release When current entering into the exciting coil the armature is attracted which drives the friction disc 5 compress the spring 2 and make the brake disc entering i
56. es for pulley bottom of slot and nominal diameter of rope are on speaking terms In order to assure the rope normal operation in pulley groove in any position and setting device prevent the rope escape from grooves Notice in particular eForbid the rope after insert and joint use to the mechanical drive when it worn out eDon t allow the rope distort in any condition which can damage the rope safety and service life eProcess the eye survey inspection for overall length of rope each three month eReplacing the rope in time if found following breaking down the rope diameter reduce by erosion and wear out If it is not breaking off Proceed distort crush fold knot or other damage Twist distortion If the rope has dryness and oxidation symptom suggest using the RC oil lubricate slightly If it disuse long time should protect with lubricating grease etake down the old rope Put down the pulley block and set it at fixing support Loose the rope from fixing end Set out the rope from the drum Take out the rope double clamping head and unscrew the rope single clamping head but don t take down the single clamping head 10B 12 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL APPENDIX COMMON WIRE ROPE DEFECTS Wire rope defects requiring immediate replacement and their causes are depicted in the following figures 10B 13 Individual wires bend up and protrude through the strands serious defect caused
57. g grease 2 gear 4 high temperature grease 4 SY1511 65 normal temperature proof seawater corrosion 50 C raceway 2 complex aluminium base grease 2 gear 4 complex aluminium base grease 4 SH0378 1992 12B 9 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 8 Lubricating for hoisting winch 1 Lubricating for hoisting reducer Fill the lubricating oil before the reducer putting into service after running 500 hours drain the oil and fill new oil After the first time for oiling replace the oil every 2400 hours The lubricating oil is N100 gear oil and fill it to the scale between the oil scales 2 Lubricating for drum bearing Fill the lubricating oil in drum bearing before putting into service after this fill it every 500 hours and don t fill too much it may cause the falling off of seal ring Note Keep the air hole clean and smooth l oil scale 2 oil draining port 3 filler inspection port 4 grease nipple 12B 10 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 9 Manitenance for telescoping cage G2 ing when starti M Lubricating G Ez uv
58. g type Operating condition Inservice Out of service In service Out of service Fl 65t 46t F2 98t 112t F3 70t 135t Dead weight 52t 64t STT113 main performance parameter of tower crane mechanism Table 1 2 3 Speed Hoist weight Motor Items Mechanism Rope capacity m min t m min t Kw 8 5 7 3 0 O 4 2 6 0 A T4 400m 24 24 5 5 O 30 0 20 6 0 T gt 400m 80 1 5 40 3 0 Trolleying ape DTC55 0 57 m min 55 Signing RTC95 0 0 7rpm 95 N m Traveling cnn RT 12 5 25 m min 2x1 7 3 4 Consult us 1B2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter Safe Rules of Tower Crane manual of safe rules Marec o acide a dietis ec ge SIRO EE Sie E m e ERR ERI EE olen eats 2B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL I manual of safe rules 1 The regulation of correct used 1 It is forbidden to use the tower crane which has not pass the performance test 2 According to the technique regulation and method of use the crane must be used in its good condition Pay more attention to the safety to prevent the dangerous Eliminate all kinds of malfunctions in time which may cause the safety accident 3 Operate the tower crane in specified scope of temperature 20 C 40 C 4 5 Operate the crane in specified limit of wind speed the max wind speed for operating is 20m s the max wind speed out of service is 50
59. have rusted when replaced the oils When occurred above phenomenon must be complete deal before refill oil and operate The important never adjusting the throttle valve during having load otherwise it is very dangerous to do so 9B 7 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL V The common failure reason and its clearance 1 The cylinder shakes heavily when it lowering The mast will swinging if it shakes badly Reason The adjustment of throttle valve for oil return circuit is unsuitable Eliminate method Adjust the throttle valve according to the instruction manual until it reaches to the optimum condition If the opening position of throttle valve for cylinder didn t align with the screw thread it can not be adjusted 2 The joint sleeve damage Reason The manufacturing engineering of sleeve wasn t ensured Eliminate method Replace the joint or weld i e weld the nut and direct connection hard At this time the joint can t adjust the direction of oil pipe 3 The cylinder continually falling down Reason Two chambers of the cylinder have residual gas left not well sealed or the hydraulic oil wasn t clear Eliminate method Eliminate the gas from the cylinder ensure the seal of control piston and one way valve often check the oil cleanliness and ensure the oil box well sealed the control valve in hydraulic pump station must be accurately adjusted The interface for high and low pressure of hydraulic telescoping s
60. imiter SRG Make three cycles slewing in the reverse direction Then adjust the cam 6 until it depresses the contact 7 Note The above mentioned adjustments should be checked everyday before the tower crane putting into service Each time when transferring the tower crane to a new site and before putting into service it is essential to remove the plug which located at the lower part of limiter and drain the condensation water in it The plug must be installed before transferring to a new site 8B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL IV Trolley limiter Purpose The trolley limiter can prevent the operation error and keep a safety distance between the trolley and jib nose or jib foot 2 Working principle The trolley limiter is with a reduction gear which is engaged with the gear ring on the drum via a pinion This reduction gear drives cams 3 6 7 and 9 rotating which controlled the circuit breaker sensitive switch 4 5 8 and 10 thus cutting off the corresponding motion See Fig 8 4 1 Fig 8 4 1 8B 7 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Adjustment 1 Adjusting trolley out and decelerate safety device RDAv drive the trolley to a distance of 1 5m from the jib nose buffer Turn cam 3 until it depresses the corresponding contact 4 2 Adjusting the trolley out limiter SDAv drive the trolley to a distance about 20cm from the jib nose buffer Turn cam 6 u
61. ing cylinder 9 va CN xS Y t SS nO 7 A Oil box Hydraulic principle for telescoping system 9B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Main power supply SBz mj KM KM T FR 2 Motor Electromagnetic PN Electrical principle for pump station The combine change valve in the middle position H the opening P and opening T are joined the output hydraulic oil of the oil pump went back the hydraulic system in unload condition at that moment Combine change valve in the left position of dig when lift the combine change valve s handle the output hydraulic oil of oil pump come into the big chamber pass through the combine change valve P and H the high pressure glue pipe assembly and bidirectional hydraulic lock Opening the bidirectional hydraulic lock at same time and make piston of cylinder downward movement the hydraulic oil of the cylinder s small chamber reflow via the bidirectional hydraulic lock high pressure glue pipe assembly combine change valve B and T the telescoping cylinder start raise work The flow quantity of cylinder confirms the raise speed Combine change valve in the right position of dig when press the combine change valve s handle the output hydraulic oil of oil pump come into the small chamber pass through the combine change valve P and B the high pressure glue pipe assembly and bidirectional hydraulic lock
62. ing rotated towards one direction If in such condition cut off the power immediately and check that whether the potentiometer line broken or circuit broken In addition it maybe offset the zero position Measure the resistance of center tap end and sliding end by multimeter in X gear if the resistance is not between 0 50Q readjust the zero position of potentiometer 6B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 There is noise and joggling in the slewing motor In this condition power on and check that whether the voltage three phase for motor is lack phase whether the three phase voltage is balanced In normal condition the degree of unbalance for three phase voltage shouldn t be more than 3 i e the voltage of three phase output line can t exceed 15V If the declination is too large replace the slewing controller 4 The slewing system start up rapidly and stop slowly If in such condition stop the tower crane and check that whether the exciting voltage of eddy current RRa is about 20V DC If the voltage is too low check the AC voltage 48V which entering into the thyristor module If there is no voltage cut off the supply and check the connecting line in this part check again whether the thyristor module is damaged The inspection methods are as follows 1 The resistance between gate electrode G and A cathode K should be 7 100Q G 2 The resistance between the anode A and cathode K 4 is infinitely great
63. ius h It is forbidden to sling heavy load when the load has not been hang firmly 1 It is forbidden to canting pull the load j It is forbidden to sling the load which has fixed to the ground k It is forbidden to stop normal motion by emergency stop button it only can be used in exceptional case which may threaten the safety 1 It is forbidden to use limiter and brake as an normal stop device m It is forbidden to short circuit change and adjust the safety device or obstruct its normal operation n When the max wind speed is less than 20m s windward surface of the load should be lower than 1m t Stop working if the wind speed reaches to 20m s Make sure that there is no obstacle enters into jib slewing area after the tower crane traveling p If the crane operation is in bad condition stop immediately and sent somebody to repair q Make sure that there is enough distance between the tower crane and air electric wire 2B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 After one day s work a Lift the hook below the limit point meanwhile it is forbidden to leave any load on the hook b Drive the trolley close to the mast C Starting the weather vane d Grip the clamp rail on the track e Cut off the power supply and locked S Maintenance and fault clearance during the tower crane operation 1 Debug maintenance and check up each part of the crane according to the method and cycl
64. l limiter NH Ut A W N N N eddy current brake Terapia Fig 62 1 6B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL III Working principle of controller RTC E Eddy current voltage output I RP Dag gt clockwise contactor E 1 08 K E I gt anticlockwise contactor xi C IC aN Three phase adjustable AC voltage x Voltage feedback Control functional block diagram The potentiometer RP in interlock operation desk setting phase shift triggering control voltage of crystal brake tube then could output three circuit signals by the amplifier IC The first circuit striking uniphase crystal brake tube of eddy current brake to adjust the exciting voltage of eddy current After the second circuit magnify by amplifier according the voltage polar to decide position and negative turning of motor The third circuit striking the six crystal brake tubes by the triphase triggering and make the motor gain the linear change voltage then make rotate speed stepless change idiographic circuit as follows AQ RDi ELA RD N B RM C ET RG ON AC48V Dee f RRa 6B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL IV
65. limiter the hoist wire rope produces tensile force due to action of load The tensile force is transmitted to the load limiter which connects with the pulley As the load change the load limiter begins distorting so as the steel plate on which inching switches 2 5 and adjustable screw 1 6 is fitted also distort accordingly principle is the same as the moment limiter According to the requirement of the load by proper adjustment the inching switch 2 5 is depressed as to control the circuit properly 3 Adjustment tn j l Ca Fig 8 6 1 6 adjusting bolt 4 proving ring 2 5 sensitive switch 3 metal strip Note 1 The tower crane should set 2 sensitive switches and adjusting bolts 2 Except normal inspection and maintenance for the load limiter after each erection and changing falls it must be readjusted according to characteristic parameters 8B 13 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Table 8 6 1 Adjusting the speed limiter SLCHGV 1 Lift load V with low speed PV and then hoisting with high speed 2 Adjusting bolt 1 until the bolt head touches the sensitive switch 2 3 Lower the load and add 10 to the load Lift it with low speed then try to lift it with high speed At this moment it shouldn t obtain the high speed the fifth gear otherwise readjust
66. m s Observe the regulation in operation manual and regulation related to service and maintenance 2 Safety measures 1 2 3 4 5 w 6 7 8 The operator should read the operation rules before operating the tower crane The operator should always remember every safety measure and recognize the hazard meanwhile the operation rules should be visible It s forbidden for the operator to be with long hair wearing robe or wearing jewelry Often read the warning board about safety and preventing from hazard If the crane is in abnormal condition stop operation immediately and report it to the interested person It is forbidden to change or add any parts of the crane unless the tower crane manufacturer permitted Service lubricate and debug the crane according to the cycle specified in operation manual The crane operator should know the position of fire proofing equipment and grasp the method of using it 2B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Personnel selecting and their qualifications 1 The tower crane musts be operated by qualified person 2 The crane operator must be trained There must be a specific regulation about the ability of driver erector maintenance and service person 3 Crane operators should clarify their responsibility and make them know that they should refuse all the order which act against the safety 4 The experienced personnel must supervise
67. ment or the wire rope can not be greased due to some reasons caused by the limitation of the operation IV Inspection 1 Daily observing It is recommended to observe all the visible parts of the wire rope every working day so as to discover any damage or distortion in time Pay special attention to the part which is fixed on the crane if any obvious change is found inform the person in charge to inspect it according to the fourth item listed below 2 Periodical inspection by the person in charge The following items should be taken into account in order to determine inspection period and inspection cycle a National statute for hoisting machinery such as GB5144 2006 Safety rules of 10B 4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL tower crane b Types of tower crane and it working environment c Working level of tower crane d The results of the tests before and the defects found e Working time of the wire rope since its initial use Ensure that the wire rope of the tower crane is inspected at least once a week After an accident or before putting into service again after dismounting inspect the wire rope thoroughly V Inspection places 1 General Inspecting places Pay special attention to the following places although a thorough inspection on the whole length of the wire rope should also be made a The places with rope running and two fixed ends of the rope b The rope sections reeling through the pulle
68. n ensure the safety of person and equipment Among the safety devices the moment limiting device and load limiting device set a guard line for protecting the crane from overturning and rope broken Once they are well adjusted don t change them at random The limit switch for each mechanism is to limit the motion range of them The safety devices are important objects of supervision for the driver and maintenance personnel Note D If the top of tower crane exceeds 30m it is necessary to install red obstacle indicator lights on the top of strut jib nose and counter jib nose which remain current feed even the tower crane stopped 2 If the joint height of jib foot exceeds 50m it is necessary to install an anemoscope which can send out alarm signal to stop operating the tower crane when wind speed exceeds maximum working speed 8B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL II Hoisting limiter Purpose Hoisting limiter is a device which can avoid any possible operation error a Stop hoisting motion when the hook block is 1 2m apart from the trolley b When lowering the hook block prevent the wire rope from completely unwinding or winding up in reverse direction onto the drum 2 Working principle The limit switch equipped with a reduction gear and located on the chassis of drum is driven either directly by the drum shaft or through a pinion meshing a toothed ring It drives several cams that control the ci
69. ng brake moment as following 1 takeoff pin 54 and plate 53 2 Takeoff manual adjustable lever 52 3 takeoff the bolt 29 4 takeoff whole cover cap 40 5 Tighten up three spring adjusting nuts 37 simultaneously The travel motion distance of three nuts is same when adjusting three nuts precession the nut according to the clockwise the brake moment increased precession the nut according to counter clockwise the brake moment reduced It s until hoisting max rating load the load till not subsiding 5B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Adjusting air clearance of brake as following 1 takeoff cover cap 40 2 Loosening the nut 39 and 45 adjusting the distance between yoke iron of electromagnet 47 and gag bit 59 is 0 7 0 8mm the clearance tolerance around is less than 0 05mm After tighten up the nut 39 45 should check the clearance dimension to accord with the demand when operation adjust again and again exchange the friction disk as following 1 Takeoff cover cap 40 2 screw off the nut 45 3 Takeoff electromagnet 47 4 screw off nut 39 37 5 Takeoff sprig 35 6 Takeoff gag bit 59 7 Takeoff brake holder block 33 8 when it is fitting cleanup the raffle and dust of each parts surface IV declutch method of machinery In good running the adjustment cover 55 of the brake end should in loosening condition not to be tightly
70. ng height of tower crane is beyond 50m an anemoscope must be installed If the wind speed exceeds 2011 5 it can sent audible and visual alarm then the tower crane must stop working 2 During operation a Never lift load beyond the permitted radius b Never pull load in an oblique direction c When entering into the cabin check that whether the extinguisher instruction plate and warning plate are in place d Check that whether the hailer is in perfect condition e Never lift load or other components which fixed on the ground Dow Pay special attention if hear some abnormal noise stop operating the tower crane immediately and inform it to the site supervisor if the wind speed reaches to 20m s and sent audible and visual alarm it must stop working if the load is out of the sight of the driver there must be someone as a guide never cancel any safety device or adjust at random without authorization 3B 7 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Each time after operation a Lift the hook to the top end b Drive the trolley to the jib foot start the weather vane and brake device to make the jib slewing freely weather vane effect If power off manual operate this device For traveling type tower crane anchor the crane by 4 rail clamping devices NOTE The weather vane effect that is to say above the upper slewing can slew freely it can reduce the windward area automatically Thus the crane driver mu
71. ntil it depresses the contact 5 Don t adjust the cam 3 3 Adjusting trolley in and decelerate safety device RDAr and the trolley in limiter SDAr as above described drive the trolley to the jib foot Turn the cam 7 for decelerating until it depresses the contact 8 and then adjust the limit cam 9 until it depresses the contact 10 Note The above mentioned adjustments should be checked everyday before the tower crane putting into service 8B 8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL V Moment limiter Fig 8 5 1 The adjustment for device A C and D Loosen the nut 1 and turn the bolt 2 until it touches the contact 3 and pressing the switch contact After accurate adjustment lock nut 1 8B 9 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Purpose The tower crane is calculated and designed according to constant maximum load moment During the operation it is forbidden to exceed the load moment The moment limiter is a device to inspect hoisting and trolleying motion so as to prevent the crane from accident on account of overload 2 Working principle The moment limiter which is located on the cat head consists of a pair of elastic plate three micro inching limit switches as well as installation support adjustable screw housing and so on When hoisting a load the elastic plate begins distorting the distance between two amplifier bars reduced due to the action of load moment
72. nto releasing state The brake is ready for next brake when the current is cut off Clearance adjustment Remove the protective cover 9 and screw 8 Move the disc by screw until it lean against the cover of the latch Move the disc again and locked it in the 3 At this time the clearance is 0 8 to 1 2mm Brake moment adjustment It is already adjusted in the manufacturer Manual brake release Tighten the release nut 3 Do not forget to unscrew the nut when restarting 7B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Maintenance a Every 200 hours or every one month once b Check the clearance and brake moment as well as the worn condition of the brake disc replace it if necessary c Don t replace the brake until it worn out completely d Check that whether there is some foreign substance in the brake such as cement sand grease etc 7B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL The motion procedure diagram for relay and contactor of trolley winch a a 2 lt ta z z E E c c n a a a Q Q Q Q Q RXDAr 0 Y B 9 SDAv SDMO R gt uw e ey lt dud ac AP S z o z O gt EC um Jd ty Ne ee DPv 18 O o EEN iS e m Ne at Nae z di S N J S ee ee 8 DPv 41
73. of ST series tower crane is in accordance with CE138 and China National Standard 50HZ 380 5 60HZ 440 5 This power voltage refers to the terminal voltage of Panel L during operating the tower crane If the real power voltage is lower than terminal voltage the capacity of transformer and the distance should be inspected and adjusted or increase the cross section of power supply conductor Type of tower crane STT113 Power supply capacity 44kVA 4B3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 4 How to see electrical schematic diagrams In the process of installing and service it often needs to look up the electrical schematic diagram In order to complete the installing and service work more quickly and accurately the schematic diagram adopt letter symbols and graphic symbols in coordinate drawing which meanings could be find in the table 4 1 1 and 4 1 2 Horizontal coordinate numbers are under every electrical schematic diagram there is a vertical line under every contactor relay coil graphic symbols which marked coordinate numbers at both sides It shows the quantity of main switch and auxiliary switch which the contactor relay used and the coordinate positions on the drawing The number on the upper right quarter shows the position of auxiliary switch contact With transverse line above the number is NC switch contact and without this line is NO switch contact Arrow marked beside the number is
74. operating it The control lever must be operated slowly when starting or stopping Change shift one by one it is forbidden to get over shift It is forbidden to disobey sequential operation when stopping some action The control lever should turn to zero position gradually when actuating device making reverse movement Operate until the mechanism completely stopped It is forbidden to operate the crane which safety device has a failure unsoundness or inaccurate furthermore it is forbidden to pick off or sealed the safety device Discovery the stoppages should stop and check immediately forbid to be continue Once discover some failure it must be stopped and checked immediately It is forbidden to operate the crane with failure The driver is entitled to refuse the command which against safety rules The driver must master the moment curve the max load the min load at the jib end and the load under hook in random radius 3B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL III Operation instruction 1 Starting a Check the tower crane before everyday starting according to the instruction regulation If there is any problem report it and it is not allowed to start any more b Switch on the main power supply and press the start button c Test the working order of all mechanisms with low speed gear in light condition and check the limit device of all mechanisms d Check that whether all safety devices are integrated and a
75. ped d There are two brakes in the traveling motor one of them used for buffering and decelerating the other used for stopping the crane movement which via 6 8 seconds time delay after powering off automatically braked After the control lever return to zero the crane can still run a few meters so this operation should be done advanced Attention during traveling the crane Warn people to leave the dangerous areas by hailer Observe that if there are some obstacles on the track It is forbidden to make the cable pileup or pull it too tight f When traveling the jib must be in the centerline of the track 3B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL IV Precautions during operation The working environmental temperature of tower crane is 20 C 440 C the max working wind speed is 20m s and working grade is A4 1 Each time before operation a Make sure that the power supply cable and switches are in perfect condition b Make sure that each pin bolt and split pin are in normal condition restrict the jib slewing freely release the weather vane effect c Make sure that the counter jib ballast and base ballast are fixed firmly d Check the hoisting and trolleying wire rope e Check the lubricating of hoisting reducer and slewing ring f Switch on the power supply g Test all mechanisms with no load and check each mechanism brake and limiter if necessary readjusted it h If the worki
76. plugs 3 The oil quantities shown in this manual are only for the user s reference it is essential that the oil reaches the lower part of the oil level plug 3 Checks to be carried out before assembling and disassembling 1 Check and adjust the brakes periodically according to the recommended cycles in the manual Each time before crane erection and dismounting all the mechanisms should be inspected properly 2 For fast erection and self erection tower crane it required the folded winch to installing and dismantling So it is necessary to check up each mechanism 3 Make sure that nothing may hinder the good working order perfect motor and brake supply circuit fuses in place and in good working order free sliding of the rod for manual brake release remove the nut if required Note It is obvious that in order to perform these checks on an erected crane the drum must be locked We insist on these operations which are obligatory and compulsory ANY CARELESSNESS AT THIS WARNING MAY RESULT IN SERIOUS CONSEQUENCES 12B 2 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Maintenance schedule C checking lubricating N oil level R fillup E replacing refueling airblasting draining c checking lifetime lubricating OS 9 M L 10 h y 90 h 7 4 E 450 T 900 h 1900 h e 7 year o B 4 e C
77. r supply panel then earth or short circuit the power line after this do please dismantle the earthing and short circuit line b The electrical equipment of tower crane should be checked periodically If discover some hidden danger such as connection loosen electrical wire earthing component breakage etc it must be eliminated in time C If it must carry out live wire work there should be someone to monitor so that the main power supply can be cut off in emergency situation 7 Hydraulic system a Only the professional or experienced person can operate the hydraulic system b Periodic check every kind of conduct pipe flexible pipe and joint so that check up the oil leak and external malfunction if so eliminate that immediate oil leak may cause damage and fire c Release the component pressure according to the relevant regulations before repairing d Install the hydraulic pipe line correctly Do not connect the high and low pressure interfaces in reverse Meanwhile the joint length and quality of the flexible pipe should meet the requirement e Hold the oil quantity and quality in the oil box Check the hydraulic oil quality periodically if the oil has already deteriorated it must be replaced at once which can ensure the pump station work normally 2B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter III Operation I General rales n eov ert eer Up eta otis 3B 2 II Operation highlight RR 3B 3 I
78. rcuit Circuit Circuit breaker breaker breaker breaker breaker breaker Rectifying Transformer XLPV XJ Control 3 Phase relay contactor LH LD AC contactor AC contactor AC contactor Auto circuit breaker rela rela LMV LPV LGV A HF AC contactor AC contactor AC contactor Socket rela rela rela L Terminal strip ELECTRIC PARTS LIST OF HOIST SUPPLY POWER Symbol Name Q ty TSLA Transformer 1 DI Auto circuit breaker 1 TSFUP 01 RedFU1 RedFU LFU Circuit breaker 6 XBa Red Rectifying diode 2 XJ 3 Phase contactor 1 P LH LD LMV LGV LFa AC contactor 7 CXL XP XL SH XLPV Control relay 5 Connecting XLPV LPV LD LH LGV Auxili uxiliary relay 6 LMV L Terminal strip 44 Au Button 1 A HF Socket 96160 3H 6 8c LTE 90 GCE EZE oge see lee see 9 61 eze see 60 ree gee 826 tt aze ree ge 191 Lt t ttt oee 1531 626 976 16 oee 516 lee 108 064 wt ut wt ut ut wt Au JY AVG EI ANG LANG as Y T T T Y Y T A gn 41481 19 ANG pay 0 1 o 81 19 19 qu Uu e
79. rcuit breakers so as to cut off the corresponding motion Note Each time when transferring to a new site and before putting the tower crane into service it is ESSENTIAL to unscrew the plug located at the lowest part of the limit switch in order to eliminate the condensation water This plug must be re placed before crane transportation 8B 3 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Adjustment After the tower crane reaches the expected working height Adjustment must be carried out with no load Hoisting or lowering the hook and operate the contact A or D manually so as to confirm the contact which cutting off the controlling motion If changing height or fall of the tower crane it is necessary to readjust the hoisting limiter 1 Adjusting hoist limit switch for moving up SLH Hoist the hook with 2 fall or 4 fall until a distance of only 1m remains between trolley and pulley block Turn cam 4 by means of corresponding adjusting screw and check hoist control until it depresses the corresponding contact D so as to stop hoisting See Fig 8 2 2 2 Adjusting hoist limit switch for moving down SLD This is carried out with 2 fall or 4 fall Turn cam 1 by means of corresponding adjusting screw so that it depresses the corresponding contact A Here the hook stops before reaching the ground it is forbidden to allow the hook touches the ground to prevent the rope on the drum from coming off and at least
80. relay CXL Safety detecting relay XL Prevent over shift relay Lfa TOP controling hoisting motor brake power supply contactor Power supply contactor for LH tna LD for lifting lowering LMV power supply contactor LPV Power supply contactor for for low speed medium speed XLPV Medium spsed SH Parallel connection relay for hoisting 4B5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Symbol Name Symbol Name Power supply contactor Protection relay for loss of LGV XJ for high speed phase and phase sequence XLGV Canola lay LPVI Medium speed contactor speed Control breaker for hoistnzandicwetHe Di Main power supply switch LVeM LM PM GM Hoisting motor motor LFs Hoisting break Xl X2 X3 Lantern TSI Control transformer TS2 Control transformer TS3 Auto transformer FADi switch X RXDAr decelerating travel switch for trolley backwards Controlling travel SDAV switch for trolley RXDAV decelerating travel switch for trolley forwards forwards Controlling travel SDAr switch for trolley RDMO Momeni Silek for decelerating backwards SM Parallel connection limit SDMO Moment switch for trolley switch for trolley stop DMV Power supply contactor XDAV Control panel switch for for trolley low speed trolley forwards Power supply contactor Control panel switch for ve for trolley low speed
81. relay contactor relay contactor relay breaker Auxiliary Auxiliary Auxiliary Auxiliary Auxiliary contact contact contact contact contact RCV TS3 TSFUP TSFUI GtDi Slewing controller Auto Silicon controlled transformer T rectifier Terminal strip RedFU RedFU1 FADi Circuit Circuit Circuit breaker breaker breaker RD Right slewing contactor RG Left slewing contactor Slewing Slewing contactor contactor Circuit Circuit Circuit breaker breaker breaker Terminal Terminal stip HF D HF R HF L HF MO HF LK FH DRK Socket Socket Socket Socket Socket Socket ELECTRIC PARTS LIST OF SLEWING TROLLEY HF MO Symbol Name Q ty TS1 TS2 TS S3 Transformer 3 red red2 Rectifying diode 2 TsFUP TSFUI RedFU RedFU1 Circuit break g RDi FADi DDi GtDi DAV DAR DPV DMVI RD RG DMV RFS PD XRil 9 SD DGV DPV1 DFA XRi2 XRal Goatees 10 XRa2 XRD XRG DRV PEDE RFS DAV DAr DFa XRil DPV Auxili ium 10 RD RG XRal XRa2 ES RCV Slewing controller 1 Silicon controlled rectifier 4 H F Terminal strip 107 VGi Weather vane Light 1 XRi Weather vane Button 1 HF L HF R HE D HF LK HF DRK Socket 6 Safety Transformer Circuit Breaker RRS Safety Transformer AMERITAR Control Cab Lighting AC 220v AMEX aoe Cab Lighting MMAR Control Windscreen Wipe
82. ressure when the cylinder overhanging completely and after it recovery completely Finished the above work can put into normal work 2 Although top up the oil at first time it reduce and from oil box to the cylinder when it starting so should supply the hydraulic oil up to the liquidometer upper limit when the hydraulic telescoping system bringing into service Check the hydraulic oil s cleanliness termly general condition should make check once six month or after 2000 hours According to specific circumstances it can also check the oiliness ahead of time If the oil is bring and clean use it continue if the oil is solidification and feculence please replacing new oil In order to protect the seal ring of cylinder should often wipe dunghill on piston rod The hydraulic pump station should be covered with plastic material after complete work To protect the water pollute the oilness and prolong the useful life 9B 6 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 3 Observe whether the oil is curdle if the hydraulic system disuse long time Hydraulic system is made contact and operated period of time no load each two or three months The cylinder and pump are proceeding the hydraulic cycle to filled oils with its surface to have no rust and protect pump valve and cylinder 4 The hydraulic oils must be replacing in time when it have milkiness freezing and feculence phenomenon The cylinder will be cleared and checked some place whether
83. rope for the rope with the steelcored don t consider the rope core and look upon inside wire of rope 10B 8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Rope end broken wire When the rope broken wire at rope end or round it indicate this part have high stress even have a litter maybe arose by rope end setting incorrect should found out the reason for damage And should cut off the part of broken then set it over again reasonably if its length allowed 3 Broken wire part collection The rope should discard as useless if it broken wire forming part collection together and that broken wire gather length of rope range less than 6d or it concentrate in discretionary wire of rope even if broken wire number less than the list shown 4 Broken wire increase rate In some use occasion fatigue is an important reason result in the rope s damage but the broken wire start occurs after using period and its number increase in short time In this condition should check and write down the broken wire increase condition in order to adjudicate it increase rate This rule could confirm the future date of rope discard as useless S Wire of rope breaking down The rope should discard as useless if the whole wire of rope breaking down 6 Rope diameter decrease due to the core of rope break down The rope should discard as useless when the rope diameter decrease due to damage the fiber core and breaking off the steel core or inner wire of rope for multis
84. rs 2 AERO Grease 7145 2 Before greasing please clean out the waste oil on the shaft 7 Greasing the slewing ring Before installing the slewing ring grease it fully Then supplement grease every 50 hours Enough new grease should be applied each time before and after long term standstill of the tower crane Each time when greasing the inside of the rail should be fully greased until oozing from sealing place Turn the slewing ring slowly while greasing and apply grease evenly The tooth face should be cleaned every 10 days and smeared Lubricant grease 12B 8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL The lubricating grease can be selected according to the following table Bear structure Working conditions Lubricating position Lubricating grease Name Consistency grade Standard code rubber seal ring for plastic isolation block low temperature normal temperature wet 40 C 60 C raceway extreme pressure lithium base grease 1 2 BG7324 1994 gear carbon calcium base grease ZG S SH0369 1992 labyrinth seal for metal isolation block 40 C 140 C High temperature and wet raceway extreme pressure lithium base grease 1 2 GB7323 1994 MOS2 complex calcium lubricating grease 2 gear 4 high temperature grease 4 SY1511 65 80 C 180 C raceway MOS2 complex calcium lubricatin
85. s as stated in the table In such a case it will be necessary to replace part of or all the bolts Systematic replacement The screws and bolts used for the slewing ring assembly must be systematically replaced every seven years or 14000 hours operation Re tightening the bolts No matter it is after the replacement of the bolts or the slewing ring is re assembled by using new bolts the tightening of the bolts should be carried out continuously and symmetrically in the direction of 180 Then re tighten them one more time to make sure all the bolts on the circle have the same pre tension 11B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Table 11 1 1 Bolt class 10 9 Bolt class 12 9 mm Diameter Tightening torque N m Tightening torque N m Maximal Rated Maximal Rated 20 580 520 690 620 22 780 700 930 840 24 1000 900 1080 1200 27 1500 1350 1800 1620 30 2000 1800 2400 2160 The bolts remarked with are selected for connecting the slewing mechanism of the tower crane they must be checked weekly If the bolts become less tightened please re tighten with the torque value shown in table 11 1 1 Maintenance for slewing ring G Lubricate 11B 2 50h STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Chapter XII Tower crane maintenance Every kind of lubricating symbols see table 12 1 1
86. st start the weather vane after he is off duty c Turn off the main power supply switch and take the measures against rain d Depress the emergency button and cut off the power supply 3B 8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 4 Periodical inspection item 1 Electricity Inspection item Cycle After each erection Half a month Check the max supply voltage of tower crane V Check that whether the connection of earth V V wire is in good condition Check the connecting condition between tracks connection and between tracks and V earth conductor Check the earth resistance of tower crane V Check the insulation resistance of electric V equipment Check the motion of relay in each circuit V which can protect the tower crane safety Check the insulation resistance of motor V Check the contact condition of switch contact V in circuit Check that whether the connecting terminal in each electrical panel and resistance box t V V including the inner binding screw and nut is tightened up Ensure that every electrical component is in good condition and connecting wire for them V V has already been tightened up 3B 9 2 Machinery STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Inspection item Cycle After each erection Half a month Mast verticality and levelness V V Visual inspection of gear ring bolt V Metal Tigh
87. ten up of slewing gear ring bolt structure Visual inspection the fishplate connection on standard mast jib counter jib and fixing plate on base plate including pin split pin and bolt Detect the crack of section steel and check the weld joint lt Adjust and check the brake with max load Hoisting winch Slewing mechanism Trolleying winch Traveling mechanism Mechanical parts Check the worn out of the wearing plate Hoisting winch Slewing mechanism Trolleying winch Traveling mechanism Check the oil level of reducer Hoisting winch Slewing mechanism Trolleying winch lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt lt 3 10 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL Traveling mechanism Cable drum Hydraulic pushing bar Others Check the hook hook pin and clamping plate y Adjust the tensile force of trolley wire rope Check the wire rope and joint V Check that whether the swing pulley is in perfect condition check that whether the prevent twist hook at fixing point of hook V end is in perfect condition Check the automatic locking device in 2 4 fall or double trolley V locking device 3B 11 3 Safety device STT113 TOWER CRANE OPERATION AND SERVICE MANUAL
88. ter DM limiter SLMO SDMO L L x Y W L I D ZEPPEREN m 10N 10N 0N m m m 52 5 950 1045 6000 12 76 14 04 42 50 0 1250 1375 6000 14 43 15 87 40 47 5 1350 1485 6000 14 45 15 90 38 45 0 1550 1705 6000 15 06 16 57 36 42 5 1750 1925 6000 15 53 17 08 34 40 0 1850 2035 6000 15 24 16 76 32 37 5 2100 2310 6000 15 72 17 29 30 35 0 2300 2530 6000 15 75 17 33 28 30 0 3100 3410 6000 17 12 18 83 24 8B 15 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL VII ANEMOSCOPE 1 Technical specifications 1 1 Power source 48VAc 50Hz 1 2 starting wind speed lt 1 5m s 1 3 display lt 3 2 Site humidity ranges 2 1 wind speed detector 40 50 C 0 100 RH 2 2 display 20 50 C 0 70 RH 3 Operation principals and instructions for use 3 1 Operation principals The wind sensor and the display are powered by three power cables When the wind sensor sends out a pulse proportionate to the wind speed the pulse is rearranged by the electric circuit board into DC electricity Then the current is magnified and fed into the display to show the wind speed A dedicated circuit board processes the signal which then powers 201 LEDs The alarm sounds when the wind speed reaches the limit 3 2 Instructions for use Before applying electricity connect the sensor with the display using the
89. time relay switch and the coordinate number marked at the lower left quarter of vertical line shows the position of main switch contact When a contactor relay was in working condition look for the control position of contactor switches contact on the drawing coordinate as per number under the coil symbol 4B4 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 5 Electrical schematic diagram symbol description see table 4 1 1 Table 4 1 1 Symbol Name Symbol Name I Start button O Stop button Vol Power indicator CX RD Left control panel zero switch CXL Right control panel zero A host switch Sh Fan Au Button for service hoisting limit switch HF box connecting L box connecting L terminal terminal XLH Control panel switch for 1 Control panel switch for controlling hoisting controlling medium speed XLD Control panel switch for XL3 Control panel switch for controlling lowering controlling high speed SLChGV Limit switch for high SLChPV Limit switch for max load speed proving ring proving ring SLMO Lifting moment switch SLH Hook STIR for mehest position SLD Hook limit switch for TSLA LA panel control transformer lowest position Red Redx Rectifier silicon diode TSFUP puma Dr gonial transformer RedFU Rectify protective TSFUI Secondary breaker for control breaker transformer P Main contactor XBa Switch for controlling lantern XP Main
90. toried frame 10B 9 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 7 Flexibility decrease In some condition generally relate to the working environment the flexibility of rope shall decrease observably it s not safe if use continue Generally accompany follow phenomena a The rope diameter minish b Extending length of lay for rope c Shortage the air gap between rope and wire of rope due to every sections extruding each other d There are imperceptible brown power appeared wire of rope scoop e Although don t found the broken wire it s damage too fast Because rope not easy to bent and the diameter decrease will damage badly than wear out the rope purely which will result in the rope break down suddenly under move load effect so should discard as useless immediately 8 Outside and inside attrition a Inside attrition and press delve This phenomena caused by rubbing between every wire of rope and steel wire in particular when the rope often stand the bent again and again b Outside attrition The attrition of steel wire surface for rope out layer wire of rope due to pulley and drum score contact and frection under pressure effect or the friction between ropes on the drum Shortage lubrication or incorrect lubrication exist dust and sand grain shall aggravate attrition The rope should discard as useless when cover wire 10B 10 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL attrition reach diameter 40
91. ture the management regulation of power use in job site and the requirements of TN S three phase five wire system or TT three phase four phase system power supply The job site power supply must meet the national constructin department requirements the power use requirement third class distribution and two class protection The following system diagram for your reference Jib site 380V 50Hz main Branch Branch fff electrical electrical switch A box control TN s control box panel or TT Panel Note D Both the branch electrical control panel and branch switch box are equipped with air switches and leakage protector 2 The operating parameter of leakage protector in branch switch box is 270mA 0 18 8 The user can select the installation method of TN S or TT according to the local supply network administrative regulations 4 All the devices before A box including cable should be prepared by user Connection mode of power supply entering into A box A box A box L1 ea L1 L2 L3 PE 5 ee A B C PE N A B C PE TN S TT The tower crane must be earthed properly no matter which mode of power supply is adopted 4B 1 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL 2 Earthing Attention The earth wire of tower crane mustn t be replaced by fuse or the core of switch and cable There are three kinds of
92. y block Pay special attention to all the places reeving through pulleys during the hoisting when the mechanism effect repeated operation c The rope sections located in the balancing pulley d The rope sections that can be worn due to external factors e Internal inspection for caustic and fatigues The inspection results should be recorded on the equipment inspection notebook 2 Inspecting places on drum See Fig 10 5 1 a Check the terminal places of the wire rope on the drum b Check for distortion and abrasion caused by unqualified winder especially at the places with wire rope superposing and skipping 10B 5 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL c Check for broken rope d Check for erosion on the wire rope Check for distortion caused by adding load suddenly f Fixed 4 d ZA pulley Fixed p point Drum N LLL Movable O block v Load 3 Checking places around crown block and fixing points a Check for damaged rope section and for abrasion section of wire rope which winding through pulleys b Check for broken rope and for the erosions on the wire rope around its fixing points The same inspection should be made on the rope section near the balancing pulley c Check for distortion of rope d Check the diameter of the wire rope Check places around traveling block a Check carefully on the section passing through the traveling pulleys especially the section
93. ystem cannot be overturned it is forbidden to adjust throttle valve when the cylinder was with load it must be careful to adjust the high pressure throttle valve 9B 8 STT113 TOWER CRANE OPERATION AND SERVICE MANUAL CHAPTER X FIXING AND TESTING RULES FOR WIRE ROPE I Explanation EP RP EU PRIN EN 10B 2 Fitting wire ropes eee 10B 2 1 Fitting new wire rope Rem 10B 2 III Maintenance i ERRARE E oe ARAS CUP 10B 4 IV Inspection 1 Daily observation 10B 4 2 Periodical inspection by person in charge oe 10B 4 V Inspection Places 1 General Inspecting places 10B 5 2 Inspecting places on drum eem 10B 5 3 Checking places around crown block and fixed points 10B 6 4 Internal Checking on wire rope s 10B 7 5 Inspecting places at the end of wire 10B 7 VI The discard as useless standard of rope 1 The quality and quantity of broken rope 10B 8 2 Rope end broken wire eee 10B 9 3 Broken wire part collections 10B 9 108 9 5 Wire of rope breaking down 10B 9 6 Rope diameter decrease due to the core of rope break down 10B 9 7 Flexibility decrease 5 10B 10 v e eee ee eee epos ed 10B 10 108 11 lO distortions oet ec ede ee bet oe 10B 11 11 The vitiate resulting by heat or electric arc effect oos 10B 11 VII Equipment condition for Relevant rope 10B 12 APPENDIX

brochure

Contents

Download Pdf Manuals

Related Search

Related Contents