CN116161537A - Chain bridge crane - Google Patents

Abstract

The invention discloses a chain bridge crane, which comprises two upper end beams, wherein two parallel main beams which are arranged at intervals are arranged between the two upper end beams, the ends of the two main beams are detachably fixed at the top ends of the upper end beams, the upper end beams are movably assembled on a trolley travelling rail, the top ends of the main beams are provided with trolley, a lifting mechanism and a cable take-up and pay-off device are arranged on the trolley, a crane lifting hook is arranged below the lifting mechanism, the trolley travelling mechanism comprises trolley travelling wheels, the trolley travelling wheels are rotatably assembled at the two ends of the upper end beams, a gear column is arranged between the two upper end beams, the two ends of the gear column are in transmission connection with the trolley travelling wheels, the lifting mechanism comprises lifting drums, lifting motors are arranged on the trolley at the two ends of each lifting drum, the two lifting motors are symmetrically arranged, and power output shafts of the two lifting motors are in transmission connection with the lifting drums.

Description

Chain bridge crane

Technical Field

The invention belongs to the technical field of hoisting equipment, and particularly relates to a chain bridge crane.

Background

The crane is a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects in a certain range, and is also called crown block, aerial crane and crane. The crane is divided into a portal crane, a bridge crane, a beam crane and a cantilever crane according to the equipment structure, wherein the bridge crane is a crane equipment for hoisting materials in workshops, warehouses and stock yards, two ends of the bridge crane are generally arranged on high cement columns or metal brackets, a bridge frame of the bridge crane longitudinally runs along a cart travelling rail paved on the two side high frames, and the space below the bridge frame is utilized for hoisting the materials, so that the bridge crane is not blocked by ground equipment, and is a crane with the widest application range and the largest number; bridge crane mostly includes hoist main beam frame and assembles the big car running gear on main beam frame, sets up the travelling car on girder top, and the elevating system who sets up on the travelling car has following several problems:

1. Because the bridge crane has larger span, the travelling displacement of the travelling wheels of the trolleys is different under the inertia effect when the travelling mechanisms of the trolleys at two sides are operated, so that rail gnawing is easy to occur, and the travelling motor of the trolleys is overloaded and damaged when the rail gnawing is serious, thereby influencing the working progress;

2. on the other hand, the lifting mechanism of the trolley is generally used for winding a steel wire rope through a winding drum, and lifting heavy objects by a lifting appliance pulled by the steel wire rope, and the steel wire rope is easy to separate from a steel wire rope groove of the lifting winding drum, so that the steel wire rope is worn, and even the steel wire rope is broken to cause accidents;

3. because the power is required to be supplied to the lifting appliance of the crane, the power supply cable is easy to collide with the steel wire rope and even be wound together with the steel wire rope, so that the power supply cable is damaged and even is broken, and accidents are caused.

Therefore, the existing bridge crane has large span, rail gnawing phenomenon is easy to occur, the steel rope of the lifting mechanism easily slides out of the winding drum when lifting, and the steel rope is frequently derailed and broken, so that the bridge crane cannot be used, and the power supply cable of the existing bridge crane is also easily torn, so that power supply faults are caused.

Disclosure of Invention

The invention provides a chain bridge crane, which aims to solve the technical problems that the existing bridge crane is easy to gnaw and the steel wire rope and the power supply cable are easy to break, and comprises a crane beam frame, wherein the crane beam frame comprises two parallel and spaced upper end beams, two parallel and spaced main beams are arranged between the two upper end beams, trolley travelling rails which are arranged in parallel with the main beams are paved on the top ends of the main beams, the upper end beams and the main beams play a supporting role, the end parts of the two main beams are detachably fixed on the top ends of the upper end beams, the upper end beams are movably assembled on the trolley travelling rails through a trolley travelling mechanism, and the trolley travelling mechanism can drive the crane beam frame to freely move along the longitudinal direction of the trolley travelling rails. The movable trolley that is equipped with in top of girder, be equipped with trolley travelling mechanism on the trolley, trolley travelling mechanism assembles on the trolley travelling track on girder top, trolley travelling mechanism can drive the hoist dolly and freely move along trolley travelling track, trolley travelling mechanism is including assembly trolley travelling motor and the trolley travelling wheel on the trolley, trolley travelling motor's power take-off shaft and trolley travelling wheel transmission are connected, be equipped with hoisting mechanism and cable take-up and pay-off on the trolley, hoisting mechanism's below is equipped with the hoist lifting hook, the hoist lifting hook passes through the chain and connects on hoisting mechanism.

The cart travelling mechanism comprises cart travelling wheels, the cart travelling wheels are rotatably assembled at two ends of the upper end beams, gear columns which are arranged in parallel with the main beams are arranged between the two upper end beams, transmission teeth are arranged on the gear columns, two ends of each gear column are in transmission connection with the cart travelling wheels on the upper end beams, the cart travelling mechanism further comprises a support frame fixed on a lifting trolley, a plurality of cart power mechanisms are fixed at the top ends of the support frame, the cart power mechanisms are in transmission connection with the gear columns, and the cart power mechanisms can drive the gear columns to rotate so as to drive the cart travelling wheels to rotate.

The cart power unit sets up two sets of and symmetry settings, cart power unit is including the vertical cart travel motor who sets up, be fixed with first bevel gear on the power take off shaft of cart travel motor, first bevel gear is vertical to be set up, the rotatable transmission shaft that is equipped with the level setting of lower extreme of support frame, be fixed with second bevel gear and first gear on the transmission shaft, first bevel gear and second bevel gear intermeshing, first gear and gear column meshing, cart power unit drives first bevel gear and rotates, first bevel gear gives the second bevel gear with power transmission, and then give the gear column with power transmission by epaxial first gear. The cart travelling wheel comprises a supporting part, the supporting part is in rolling fit with the cart travelling rail, supporting shafts which are horizontally arranged are fixed at two ends of the supporting part, the supporting shafts are rotatably assembled on the upper end beam through wheel bearing assemblies, one end of the supporting part is provided with a gear part, the gear part and the supporting part are coaxially arranged, and the outer diameter of the gear part is larger than that of the supporting part, so that derailment is avoided. The upper end beam above the cart travelling wheel is rotatably connected with a support rod which is horizontally arranged through a support rod bearing, one end of the support rod is detachably and fixedly connected with the gear column in a coaxial line, a second gear is fixed on the support rod, and the second gear is meshed with the gear part of the cart travelling wheel. Be fixed with the gear frame on the girder of gear post below, the gear frame plays the supporting role, and the one end of gear frame extends to the below of gear post, and rotationally is equipped with the third gear on the gear frame, and the upper end and the gear post meshing of third gear, the third gear setting can increase the stability of gear post in the middle of the gear post, reduces the deformation of gear post.

The lifting mechanism comprises a lifting reel which is horizontally arranged, two ends of the lifting reel can be rotatably assembled on the lifting trolley, a chain notch for assembling a chain is formed in the lifting reel, the upper end of the chain is assembled in the chain notch, and the lower end of the chain is detachably fixed on a crane hook; lifting motors are arranged on the lifting trolleys at two ends of the lifting reel, the two lifting motors are symmetrically arranged, power output shafts of the two lifting motors are in transmission connection with the lifting reel, the lifting motor drives the lifting reel to rotate, a lifting reel traction chain moves upwards or downwards, and the height of the lifting appliance of the crane is adjusted.

The cable winding and unwinding device comprises a vertically arranged protective shell, the cross section of the protective shell is rectangular, the upper end of the protective shell can be detachably fixed on the lifting trolley, the upper end of the protective shell extends upwards to the upper side of the lifting reel, the bottom end of the protective shell extends downwards to the lower side of the lifting trolley, a fixed pulley block is rotatably assembled in the top end of the protective shell, a plurality of fixed pulleys are arranged on the fixed pulley block, a movable pulley block which is arranged below the fixed pulley block and corresponds to the fixed pulley block is arranged in the protective shell, a cable is wound between the movable pulley block and the fixed pulley block, and the movable pulley block moves vertically upwards to release the cable; when the cable is required to be contracted, the movable pulley block vertically moves downwards under the action of gravity of the movable pulley block, the cable is wound between the movable pulley block and the fixed pulley block, and the cable is wound and unwound through lifting of the movable pulley block. The top of protective housing is equipped with a plurality of leading wheel support, and rotatable assembly has leading wheel and line ball wheel on the leading wheel support, and leading wheel and line ball wheel are parallel and the interval sets up, and the cable passes between leading wheel and the line ball wheel and twine on the leading wheel, and the leading wheel plays the guide effect to the cable, and the effect of line ball wheel is to avoiding the cable to jump out in the leading wheel, plays the effect of protection cable. The inside slide rail that is equipped with two vertical settings of cable winding and unwinding devices's protective housing, two slide rails are fixed respectively in the both sides of running block, and the both sides of running block all are fixed with the slider, slider sliding fit on the slide rail, and the slide rail plays the guide effect to the running block, reduces running block's rocking to reduced the traction force of cable, strengthened the life of cable.

The crane lifting hook comprises a lifting hook supporting pipe which is vertically arranged, the inside of the lifting hook supporting pipe is hollow, the upper end of the lifting hook supporting pipe is detachably fixed on a chain, a lower supporting table is detachably fixed at the bottom end of the lifting hook supporting pipe, an upper supporting table which is horizontally arranged is arranged above the lower supporting table, a plurality of supporting plates which are uniformly arranged at intervals are arranged between the upper supporting table and the lower supporting table, the upper supporting table is fixed on the lower supporting table through the supporting plates, a rotating motor which is vertically arranged is fixed at the top end of the upper supporting table, and the rotating motor is communicated with a cable of a cable winding and unwinding device. The top of lower brace table is equipped with the connector through the support bearing is rotatable, the connector plays the linking action, the upper end of connector passes through the shaft coupling transmission with the power take off shaft of rotating electrical machines and is connected, the below of lower brace table is equipped with the connecting plate of vertical setting, the upper end of connecting plate is equipped with the fixed part, the upper end of connecting plate upwards extends lower brace table and passes through pin dismantlement fixed connection with the connector, the lower extreme of connecting plate can be dismantled through the ring flange and be fixed with the lifting hook, start rotating electrical machines, the rotating electrical machines passes through the connector and drives the connecting plate and rotate, realize the rotation regulation of lifting hook.

Be equipped with the hoist commutator between connecting plate and the lifting hook, the angle of convenient adjustment lifting hook, the hoist commutator includes the support column of vertical setting, set up the through-hole that is the rectangle of vertical setting on the support column, and the through-hole department on support column top is equipped with the chamfer, the location and the grafting of connecting plate of being convenient for, the connecting plate can insert in the through-hole on the support column, and the fixed orifices that the level set up have been seted up to the side of support column, set up the fixed orifices that corresponds the setting with the fixed orifices on the support column on the connecting plate, the support column passes through round pin axle and connecting plate fixed connection, when needing the angle of adjustment lifting hook, pull out the round pin axle, rotate 180 with lifting hook and support column, insert the connecting plate in the through-hole on the support column, then run through the round pin axle in the fixed orifices of connecting plate and support column. The one end of round pin axle is fixed with the handle, is connected with the round pin axle fixed chain on the handle, and the other end of round pin axle fixed chain is fixed on the support column, and the setting of handle conveniently lifts off the round pin axle, and the lower extreme of support column is equipped with the baffle that is the L type, and the rotation of round pin axle can be reduced in the setting of baffle, and the bottom mounting of support column has the ring flange, and the support column can dismantle fixed connection through ring flange and lifting hook, is equipped with the unhook spare on the lifting hook, and the setting of unhook spare can avoid the heavy object unhook when the lifting hook lifts by crane the heavy object, reinforcing security.

The wire box is arranged on the crane trolley and comprises a base with a fixing function, a plurality of wire box bodies are fixed at the top end of the base, supporting legs are arranged at four corners of the bottom of the wire box bodies, fixing holes are formed in the supporting legs, the wire box bodies are detachably fixed on the base through fixing bolts, two sides of the wire box bodies are rotatably connected with lock catches, the two lock catches are symmetrically arranged, a handle is fixed between the two lock catches, a protective cover is arranged above the wire box, fixing columns which are arranged in one-to-one correspondence with the lock catches are fixed on the two sides of the protective cover, a wire outlet hole is formed in one side of the protective cover, an aviation connector is arranged in the wire outlet hole, a wire inlet hole is formed in the lower portion of the base, a clamping block which is arranged in one-to-one correspondence with the clamping block is arranged on the side wall of the wire box body, the clamping block and the clamping groove are arranged so that the protective cover can be conveniently positioned, the protective cover is buckled on the wire box body, the wire box is conveniently disassembled in a buckling mode, and maintenance personnel can conveniently open the wire box; reinforcing plates are arranged on two sides of the base, and the strength of the base is improved by the reinforcing plates.

The upper end beam on the left side of the girder is fixedly provided with a lead frame which is vertically arranged, one side of the lead frame is provided with a cart support chain track which is parallel to the upper end beam, the upper end of the cart support chain track is opened, two L-shaped support battens are arranged in the cart support chain track, the support battens are fixed on the inner wall of the cart support chain track, an interval exists between the two support battens, the cart support chain is arranged on the support battens, the support battens are arranged to support the cart support chain, the contact area between the cart support chain and air is increased, the heat dissipation speed is increased, one end of the cart support chain is fixed with the lead frame, one side of the girder is fixedly provided with a cart support chain track, a cart support chain is arranged in the cart support chain track, the current cart power supply generally adopts a conductive slider, a power supply track is arranged above a workshop steel structure factory building, a bridge crane is supplied with power through the conductive slider, the power supply mode is dangerous, the power is required to be frequently cleaned and replaced in order to supply power, the bridge crane is supplied with power through the cart support chain track, the cart support chain, the safety is improved, and the working efficiency is improved.

The lifting trolley comprises a lifting trolley body, wherein two ends of the lifting trolley body are respectively provided with a reverse hook device, each reverse hook device comprises a first supporting block and a second supporting block, the first supporting blocks and the second supporting blocks are respectively and correspondingly fixed on the lifting trolley body, a first support arm is rotatably connected to the first supporting blocks through a hinge shaft, a second support arm is rotatably connected to the second supporting blocks through the hinge shaft, the first support arm and the second support arm are symmetrically arranged, the bottoms of the first support arm and the second support arm are respectively provided with a hook part in an L shape, the top ends of the first support arm and the second support arm are respectively provided with an adjusting rod, each adjusting rod extends to the upper side of the lifting trolley body, a fixing support which is vertically arranged is fixed on the lifting trolley body, a plurality of assembling holes which are used for fixing the adjusting rods are arranged on the fixing support, the distances between the hook parts and the main beams can be suitable for the main beams of different specifications, the assembling holes are sequentially arranged from top to bottom, and the lifting trolley body is prevented from derailing, and the safety performance is enhanced.

Preferably, a lifting frame for lifting the lifting trolley is arranged above the lifting mechanism, four corners of the bottom end of the lifting frame are fixed on the lifting trolley, the lifting frame is a dome-shaped frame, and lifting holes for lifting are formed in the top end of the lifting frame.

Preferably, the pay-off hole has been seted up to the bottom of cable winding and unwinding device's protective housing, and protective housing's bottom can be dismantled and be fixed with the camera support, is equipped with the camera on the camera support.

Preferably, the chain bridge crane is made of stainless steel and has radiation resistance.

The adoption of the scheme has the following advantages:

the arrangement of the cart travelling mechanism connects the cart travelling wheels on the two upper ends by adopting a gear column parallel to the main beam, so that synchronous transmission is realized, displacement difference formed by different displacements of the cart travelling wheels on the two upper ends of the bridge crane is reduced, the probability of track gnawing of the cart travelling wheels and the cart travelling rail is reduced, the running stability of the cart travelling mechanism is enhanced, the maintenance time of workers is shortened, and the working efficiency is improved;

the lifting mechanism is arranged, the traditional winding of the steel wire rope and the lifting winding drum is replaced by the assembly of the lifting winding drum and the chain, the accident that the steel wire rope is broken due to the fact that the steel wire rope jumps to the groove is reduced, meanwhile, the chain and the crane lifting hook are always on the same straight line, and compared with the case that the steel wire rope is wound on the lifting winding drum, the precision of the lifting height is enhanced;

When the cable is required to be released, the movable pulley block moves vertically upwards under the traction of the cable, and when the cable is required to be contracted, the movable pulley block moves vertically downwards under the action of gravity of the movable pulley block, the cable is wound between the movable pulley block and the fixed pulley block, and the cable is wound and unwound through the lifting of the movable pulley block, so that the cable is convenient to use;

the crane lifting hook is arranged, the lifting hook is driven to rotate through the rotary crane, so that the angle adjustment of the lifting hook is realized, and compared with the existing rotary lifting tool, the crane lifting hook is compact and light in structure, and the weight of the crane lifting hook is reduced; the lifting appliance reverser arranged on the lifting hook of the crane is convenient for turning the lifting hook and convenient for assembly;

the junction box is arranged in a buckling manner, so that the junction box is convenient to disassemble and is convenient for maintenance personnel to open;

the arrangement of the reverse hook device can avoid derailment of the trolley and enhance the safety performance.

The lifting trolley can be directly lifted through lifting equipment during disassembly and assembly, so that the lifting trolley is directly separated from the bridge frame and the power supply, and can be reversely installed, thereby realizing quick disassembly and maintenance.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic diagram of a second perspective structure of the present invention;

FIG. 3 is a schematic diagram of a front view of the present invention;

FIG. 4 is a left side view of the present invention;

FIG. 5 is a schematic top view of the present invention;

FIG. 6 is a schematic structural view of a cart travel mechanism;

fig. 7 is an enlarged view of a portion B of fig. 6;

fig. 8 is an enlarged view of a portion a of fig. 2;

FIG. 9 is a schematic diagram of a front view of a cable take-up and pay-off device;

FIG. 10 is a schematic left-hand view of a cable take-up and pay-off device;

FIG. 11 is a schematic view of the cross-sectional view taken along the direction A-A of FIG. 10;

FIG. 12 is a schematic diagram of a front view of a crane hook;

FIG. 13 is a schematic view of the B-B cross-sectional structure of FIG. 12;

FIG. 14 is a schematic perspective view of a crane hook;

FIG. 15 is a schematic view of the construction of the spreader reverser;

FIG. 16 is a schematic view of the structure of the connection plate and pin shaft;

FIG. 17 is a schematic perspective view of a junction box;

fig. 18 is a schematic diagram showing a second perspective structure of the junction box;

FIG. 19 is a schematic view of an exploded construction of the junction box;

FIG. 20 is a schematic perspective view of the reverse hook device;

fig. 21 is a schematic view of the assembly between the counter hook assembly and the main beam.

Reference numerals: 1. a crane beam frame; 2. a cart travel mechanism; 3. a lifting trolley; 4. a lifting mechanism; 5. a cable winding and unwinding device; 6. a crane hook; 7. a sling reverser; 8. a junction box; 9. a lead frame; 10. a reverse hook device; 11. a main beam; 111. the trolley moves along the track; 12. an upper end beam; 13. a cart walking track; 21. traveling wheels of the cart; 211. a support part; 212. a support shaft; 213. a wheel bearing assembly; 214. a gear portion; 215. a support rod bearing; 216. a support rod; 217. a second gear; 22. a gear post; 23. a support frame; 24. a cart power mechanism; 241. a cart walking motor; 242. a first bevel gear; 243. a transmission shaft; 244. a first gear; 245. a second bevel gear; 25. a third gear; 251. a gear frame; 26. a camera; 261. a camera bracket; 31. a trolley travel mechanism; 32. hoisting the frame; 33. lifting holes; 41. lifting the winding drum; 42. a chain; 43. a lifting motor; 51. a protective housing; 52. a fixed pulley block; 53. a movable pulley block; 54. a cable; 55. a guide wheel bracket; 551. a guide wheel; 552. a wire pressing wheel; 56. a slide rail; 561. a slide block; 61. a lifting hook supporting tube; 62. a lower support table; 621. an upper support table; 622. a support plate; 63. a rotating electric machine; 64. a connector; 641. a coupling; 642. a pin; 643. a support bearing; 65. a connecting plate; 651. a fixing part; 66. a lifting hook; 661. a flange plate; 662. an anti-unhooking member; 71. a support column; 711. chamfering; 72. a pin shaft; 721. a pin shaft fixing chain; 722. a fixing hole; 73. a handle; 74. a baffle; 81. a base; 811. a wire inlet hole; 82. a junction box body; 821. locking; 822. a handle; 823. a support leg; 83. a protective cover; 831. fixing the column; 832. a wire outlet hole; 84. a reinforcing plate; 85. a clamping block; 86. a clamping groove; 91. a cart chain supporting rail; 92. a support slat; 93. a cart support chain; 94. a trolley chain supporting rail; 95. a trolley support chain; 101. a first support block; 102. a second support block; 103. a first arm; 104. a second arm; 105. a hook part; 106. a fixed bracket; 107. an adjusting rod; 108. a fitting hole; 109. and a hinge shaft.

Detailed Description

As shown in fig. 1-21, a chain bridge crane comprises a crane beam frame 1, wherein the crane beam frame 1 comprises two parallel upper end beams 12 which are arranged at intervals, two parallel main beams 11 which are arranged at intervals are arranged between the two upper end beams 12, trolley walking rails 111 which are arranged parallel to the main beams 11 are laid on the top ends of the main beams 11, the upper end beams 12 and the main beams 11 play a supporting role, the end parts of the two main beams 11 are detachably fixed on the top ends of the upper end beams 12, the upper end beams 12 are movably assembled on the trolley walking rails 13 through a trolley walking mechanism 2, and the trolley walking mechanism 2 can drive the crane beam frame 1 to freely move along the longitudinal direction of the trolley walking rails 13. The movable trolley 3 that is equipped with in top of girder 11, be equipped with trolley travelling mechanism 31 on the trolley 3, trolley travelling mechanism 31 assembles on the trolley travelling rail 111 on girder 11 top, trolley travelling mechanism 31 can drive hoist trolley 3 along trolley travelling rail 111 free movement, trolley travelling mechanism 31 is including assembling trolley travelling motor and the trolley travelling wheel on trolley 3, trolley travelling motor's power take-off shaft and trolley travelling wheel transmission are connected, be equipped with hoisting mechanism 4 and cable take-up and pay-off 5 on the trolley 3, the below of hoisting mechanism 4 is equipped with hoist lifting hook 6, hoist lifting hook 6 passes through chain 42 and connects on hoisting mechanism 4.

The cart travelling mechanism 2 comprises cart travelling wheels 21, the cart travelling wheels 21 are rotatably assembled at two ends of the upper end beams 12, a gear column 22 which is arranged parallel to the main beams 11 is arranged between the two upper end beams 12, transmission teeth are arranged on the gear column 22, two ends of the gear column 22 are in transmission connection with the cart travelling wheels 21 on the upper end beams 12, the cart travelling mechanism 2 further comprises a support frame 23 which is fixed on the trolley 3, a plurality of groups of cart power mechanisms 24 are fixed at the top ends of the support frame 23, the cart power mechanisms 24 are in transmission connection with the gear column 22, and the cart power mechanisms 24 can drive the gear column 22 to rotate so as to drive the cart travelling wheels 21 to rotate.

The cart power mechanism 24 is provided with two groups and is symmetrically arranged, the cart power mechanism 24 comprises a cart walking motor 241 which is vertically arranged, a first bevel gear 242 is fixed on a power output shaft of the cart walking motor 241, the first bevel gear 242 is vertically arranged, a transmission shaft 243 which is horizontally arranged is rotatably assembled at the lower end of the support frame 23, a second bevel gear 245 and a first gear 244 are fixed on the transmission shaft 243, the first bevel gear 242 and the second bevel gear 245 are meshed with each other, the first gear 244 is meshed with the gear column 22, the cart power mechanism 24 drives the first bevel gear 242 to rotate, the first bevel gear 242 transmits power to the second bevel gear 245, and then the first gear 244 on the transmission shaft 243 transmits power to the gear column 22. The cart running wheel 21 comprises a supporting portion 211, the supporting portion 211 is in rolling fit with the cart running rail 13, supporting shafts 212 which are horizontally arranged are fixed at two ends of the supporting portion 211, the supporting shafts 212 are rotatably assembled on the upper end beam 12 through wheel bearing assemblies 213, a gear portion 214 is arranged at one end of the supporting portion 212, the gear portion 214 and the supporting portion 212 are coaxially arranged, and the outer diameter of the gear portion 214 is larger than that of the supporting portion 212, so that derailment is avoided. The upper end beam 12 above the cart travelling wheel 21 is rotatably connected with a horizontally arranged supporting rod 216 through a supporting rod bearing 215, one end of the supporting rod 216 is fixedly connected with the gear column 22 in a coaxial line detachable mode, a second gear 217 is fixed on the supporting rod 216, and the second gear 217 is meshed with the gear part 214 of the cart travelling wheel 21. The gear rack 251 is fixed on the main beam 11 below the gear column 22, the gear rack 251 plays a supporting role, one end of the gear rack 151 extends to the lower side of the gear column 22, a third gear 25 is rotatably arranged on the gear rack 251, the upper end of the third gear 25 is meshed with the gear column 22, the third gear 25 is arranged right below the middle of the gear column 22, the stability of the gear column 22 can be improved, and the deformation of the gear column 22 is reduced.

The lifting mechanism 4 comprises a lifting winding drum 41 which is horizontally arranged, two ends of the lifting winding drum 41 can be rotatably assembled on the lifting trolley 3, a chain notch for assembling a chain 42 is formed in the lifting winding drum 41, the upper end of the chain 42 is assembled in the chain notch, and the lower end of the chain 42 is detachably fixed on the crane hook 6; lifting motors 43 are arranged on the lifting trolleys 3 at two ends of the lifting reel 41, the two lifting motors 43 are symmetrically arranged, power output shafts of the two lifting motors 43 are in transmission connection with the lifting reel 41, the lifting motor 43 drives the lifting reel 41 to rotate, the lifting reel 41 pulls a chain 42 to move upwards or downwards, and then the height of the crane lifting appliance 6 is adjusted.

The cable winding and unwinding device 5 comprises a vertically arranged protective shell 51, the cross section of the protective shell 51 is rectangular, the upper end of the protective shell 51 can be detachably fixed on the trolley 3, the upper end of the protective shell 51 extends upwards to the upper side of the lifting drum 41, the bottom end of the protective shell 51 extends downwards to the lower side of the trolley 3, a fixed pulley block 52 is rotatably assembled in the top end of the protective shell 51, a plurality of fixed pulleys are arranged on the fixed pulley block 52, a movable pulley block 53 which is arranged in the protective shell 51 below the fixed pulley block 52 and corresponds to the fixed pulley block 52 is arranged in the protective shell 51, a cable 54 is wound between the movable pulley block 53 and the fixed pulley block 52, the movable pulley block 53 moves vertically upwards, and the cable 54 is released; when the cable 54 is required to be contracted, the movable pulley block 53 vertically moves downwards under the action of gravity of the cable 54, the cable 54 is wound between the movable pulley block 53 and the fixed pulley block 52, and the cable 54 is wound and unwound through lifting of the movable pulley block 53. The top of the protective shell 51 is provided with a plurality of guide wheel brackets 55, the guide wheel brackets 55 are rotatably provided with guide wheels 551 and wire pressing wheels 552, the guide wheels 551 and the wire pressing wheels 552 are arranged in parallel and at intervals, the cable 54 passes through the space between the guide wheels 551 and the wire pressing wheels 552 and is wound on the guide wheels 551, the guide wheels 551 play a role in guiding the cable 54, and the wire pressing wheels 552 can prevent the cable 54 from jumping out of the guide wheels 551 and play a role in protecting the cable 54. The inside of the protective housing 51 of the cable winding and unwinding device 5 is provided with two vertically arranged sliding rails 56, the two sliding rails 56 are respectively fixed on two sides of the movable pulley block 53, the two sides of the movable pulley block 53 are respectively fixed with a sliding block 561, the sliding blocks 561 are slidably assembled on the sliding rails 56, the sliding rails 56 play a guiding role on the movable pulley block 53, and shaking of the movable pulley block 53 is reduced, so that traction force of the cable 54 is reduced, and service life of the cable 54 is prolonged.

The crane hook 6 includes the lifting hook stay tube 61 of vertical setting, the inside cavity of lifting hook stay tube 61, and lifting hook stay tube 61's upper end can be dismantled and fix on the chain 42, lifting hook stay tube 61's bottom can be dismantled and be fixed with the lower brace table 62, the top of lower brace table 62 is equipped with the last brace table 621 of level setting, be equipped with the backup pad 622 that a plurality of even interval set up between last brace table 621 and the lower brace table 62, go up brace table 621 and fix on lower brace table 62 through backup pad 622, go up brace table 621's top and be fixed with the rotating electrical machines 63 of vertical setting, rotating electrical machines 63 and cable 54 switch-on in the cable winding and unwinding devices 5. The top of lower brace table 62 is rotatably equipped with connector 64 through supporting bearing 643, connector 64 plays the connection effect, the upper end of connector 64 passes through the shaft coupling 641 transmission with the power take off shaft of rotating electrical machines 63 and is connected, the below of lower brace table 62 is equipped with the connecting plate 65 of vertical setting, the upper end of connecting plate 65 is equipped with fixed part 651, the upper end of connecting plate 65 upwards extends lower brace table 62 and can dismantle fixed connection through pin 642 with connector 64, the lower extreme of connecting plate 65 can be dismantled through the ring flange 661 and be fixed with lifting hook 66, start rotating electrical machines 63, rotating electrical machines 63 pass through connector 64 and drive connecting plate 65 rotation, realize the rotation regulation of lifting hook 66.

The lifting appliance reverser 7 is arranged between the connecting plate 65 and the lifting hook 66, the angle of the lifting hook 66 is convenient to adjust, the lifting appliance reverser 7 comprises a vertically arranged supporting column 71, a vertically arranged rectangular through hole is formed in the supporting column 71, a chamfer 711 is arranged at the through hole at the top end of the supporting column 71, the connecting plate 65 is convenient to position and insert, the connecting plate 65 can be inserted into the through hole in the supporting column 71, a fixing hole 722 which is horizontally arranged is formed in the side face of the supporting column 71, a fixing hole 722 which corresponds to the fixing hole 722 in the supporting column 71 is formed in the connecting plate 65, the supporting column 71 is fixedly connected with the connecting plate 65 through a pin shaft 72, when the angle of the lifting hook 66 needs to be adjusted, the pin shaft 72 is pulled down, the lifting hook 66 and the supporting column 71 are rotated by 180 degrees, the connecting plate 65 is inserted into the through hole in the supporting column 71, and then the pin shaft 72 penetrates into the fixing holes 722 in the connecting plate 65 and the supporting column 71. The one end of round pin axle 72 is fixed with handle 73, be connected with round pin axle fixed chain 721 on the handle 73, the other end of round pin axle fixed chain 721 is fixed on support column 71, the setting of handle 73 conveniently lifts off round pin axle 72, the lower extreme of support column 71 is equipped with and is L-shaped baffle 74, the setting of baffle 74 can reduce the rotation of round pin axle 72, the bottom mounting of support column 71 has flange 661, support column 71 can dismantle fixed connection with lifting hook 66 through flange 611, be equipped with unhook 662 on the lifting hook 66, the setting of unhook 662 can avoid the heavy object unhook when lifting by crane 33 the heavy object, the security is strengthened.

The crane trolley 3 is provided with the junction box 8, the junction box 8 comprises a base 81 with a fixing function, a plurality of junction box bodies 82 are fixed at the top end of the base 81, supporting feet 823 are arranged at four corners of the bottom of the junction box bodies 82, fixing holes are formed in the supporting feet 823, the junction box bodies 82 are detachably fixed on the base 81 through fixing bolts, two sides of the junction box bodies 82 are rotatably connected with lock catches 821, the two lock catches 821 are symmetrically arranged, a handle 822 is fixed between the two lock catches 821, a protective cover 83 is arranged above the junction box 8, fixing columns 831 which are arranged in one-to-one correspondence with the lock catches 821 are fixed on two sides of the protective cover 83, a wire outlet 832 is formed in one side of the protective cover 83, an aviation connector is assembled in the wire outlet 832, a wire inlet 811 is formed below the base, clamping blocks 85 are vertically arranged on the side walls in the junction box bodies 82, the clamping blocks 85 and the clamping grooves 86 are arranged in one-to-one correspondence with the clamping blocks 85, the protective cover 83 is convenient to position the protective cover 83, the protective cover 83 is conveniently buckled on the junction box bodies 82, the junction box 8 is arranged in a buckling mode, the junction box 8 is convenient to detach and the junction box 8 is convenient to open by maintenance personnel; reinforcing plates 84 are arranged on two sides of the base 81, and the strength of the base is improved by the reinforcing plates 84.

The upper end beam 12 on the left side of the main beam 11 is fixedly provided with a lead frame 9 which is vertically arranged, one side of the lead frame 9 is provided with a cart support chain rail 91 which is parallel to the upper end beam 12, the upper end of the cart support chain rail 91 is open, two L-shaped support battens 92 are arranged in the cart support chain rail 91, the support battens 92 are fixed on the inner wall of the cart support chain rail 91, an interval exists between the two support battens 92, the support battens 92 are provided with cart support chains 93, the arrangement of the support battens 92 plays a supporting role on the cart support chains 93, the contact area of the cart support chains 93 and air is increased, the heat dissipation speed is increased, one end of the cart support chains 93 is fixed with the lead frame 9, one side of the main beam 11 is fixedly provided with a cart support chain rail 94, a cart support chain 95 is arranged in the cart support chain rail 94, the current cart power supply generally adopts a conductive slide block, the power supply rail is arranged above a workshop steel structure factory, the bridge crane is powered by the conductive slide block, the conductive slide block is required to be replaced frequently, the power supply is improved, the safety of the crane is improved, and the work efficiency is improved.

The two ends of the trolley 3 are respectively provided with an anti-hooking device 10, the anti-hooking devices 10 comprise a first supporting block 101 and a second supporting block 102, the first supporting block 101 and the second supporting block 102 are respectively and correspondingly fixed on the trolley 3, the first supporting block 101 is rotatably connected with a first support arm 103 through a hinge shaft 109, the second supporting block 102 is rotatably connected with a second support arm 104 through a hinge shaft 109, the first support arm 103 and the second support arm 104 are symmetrically arranged, the bottoms of the first support arm 103 and the second support arm 104 are respectively provided with an L-shaped hook part 105, the top ends of the first support arm 103 and the second support arm 104 are respectively provided with an adjusting rod 107, the adjusting rods 107 extend to the upper side of the trolley 3, a fixing bracket 106 which is vertically arranged is fixed on the trolley 3, a plurality of assembly holes 108 which are used for fixing the adjusting rods 107 are arranged on the fixing bracket 106, the distances between the hook parts 105 and the main beams 11 can be adjusted, the main beams 11 with different specifications can be suitable for being arranged in sequence, the anti-hooking devices 10 are arranged from top to bottom, the trolley 3 can be prevented from derailing, and the safety performance is avoided.

Preferably, a lifting frame 32 for lifting the trolley 3 is arranged above the lifting mechanism 4, four corners of the bottom end of the lifting frame 32 are fixed on the trolley 3, the lifting frame 32 is a dome-shaped frame, and lifting holes 33 for lifting are formed in the top end of the lifting frame 32.

Preferably, the bottom end of the protective housing 51 of the cable winding and unwinding device 5 is provided with a paying-off hole, and the bottom end of the protective housing 51 is detachably fixed with a camera bracket 261, and the camera bracket 261 is provided with a camera 26.

The using process comprises the following steps:

when the crane beam frame is in operation, firstly, the position of the crane beam frame 1 is adjusted, a crane walking motor 43 on the crane walking mechanism 2 is started, a power output shaft of the crane walking motor 43 rotates, the first gear 244 is driven to rotate through a first bevel gear 242 and a second bevel gear 245, the first gear 244 transmits power to a gear column 22, a second gear 217 arranged at the end part of the gear column 22 drives a gear part 214 on the crane walking wheel 21 to rotate, a support part 211 of the crane walking wheel 21 rolls along a crane walking track 13, so that the crane beam frame 1 is driven to freely move along the crane walking track 13, the crane walking motor 43 is stopped when the crane beam frame 1 moves above a weight to be lifted, and when the crane beam frame 1 walks along the crane walking track 13, a lead frame 9 drags one end of a crane supporting chain 93, and the crane supporting chain 93 is flatly paved in the crane supporting chain track 91 in a reciprocating manner;

The position of the lifting trolley 3 is adjusted, a trolley travelling motor on the trolley travelling mechanism 31 is started firstly, the trolley travelling motor drives trolley travelling wheels to freely reciprocate along a trolley travelling rail 111 at the top end of the main beam 11, when the lifting trolley 3 moves to the position right above a heavy object to be lifted, the trolley travelling motor is stopped, and when the lifting trolley 3 moves along the trolley travelling rail 111 on the main beam 11, (because of a positioning reverse backlash eliminating function in an electric control system, friction force is not generated between the first gear 244 and the gear column 22, and the first gear 244 and the gear column 22 are not damaged);

the height of the crane hook 6 is adjusted, the lifting motor 43 is started, the lifting motor 43 drives the lifting drum 41 to rotate, the lifting drum 41 rotates and releases the chain 42, the crane hook 3 freely falls in the vertical direction under the action of self gravity, after the crane hook 6 falls to a designated position, the rotating motor 63 on the crane hook 6 is started, the power output shaft of the rotating motor 63 drives the connector 64 to rotate, the connector 64 drives the lifting hook 66 to rotate, after the angle of the lifting hook 66 is adjusted, the rotating motor 63 is stopped, then the trolley travelling motor is started, the position of the lifting trolley 3 is adjusted, the lifting motor 43 is started again after the lifting hook 66 hangs a heavy object, the lifting drum 41 is driven to reversely rotate, the lifting drum 41 pulls the chain 42, and the chain 42 pulls the lifting hook 66 and the heavy object to vertically rise;

When the crane hook 6 is assembled, the angle of the crane hook 6 needs to be adjusted, the pin shaft 72 is rotated through the handle 73, so that the handle 73 is separated from the blocking of the baffle 74, then the pin shaft 72 is pulled out, the hook 66 and the support column 71 are moved downwards until the connecting plate 65 is moved out of the support column 71, then the hook 66 and the support column 71 are moved upwards after the hook 66 and the support column 71 are rotated clockwise by 180 degrees, the connecting plate 65 is inserted into the support column 71 again, then the support column 71 is fixed on the connecting plate 65 through the pin shaft 72, the pin shaft 72 is rotated, and the handle 73 is rotated into the baffle 74, so that the reversing of the hook 66 is realized;

when the crane hook 6 falls down in the vertical direction, the cable pulls the movable pulley block 53 to move vertically upwards, the sliding block 561 slides upwards in the sliding rail 56, the distance between the movable pulley block 53 and the fixed pulley block 52 is reduced, and the cable 54 between the movable pulley block 53 and the fixed pulley block 52 is released; similarly, when the crane hook 6 ascends, the movable pulley block 53 vertically falls under the action of self gravity, at the moment, the sliding block 561 vertically slides downwards along the sliding rail 56, the distance between the movable pulley block 53 and the fixed pulley block 52 is increased, and the cable 54 is wound between the movable pulley block 53 and the fixed pulley block 52, so that the cable 54 is wound and unwound;

When the junction box 8 is used, a cable enters the junction box body 82 from a wire inlet hole 811 at the bottom end of the base 81, the conversion of the circuit is completed in the junction box body 82, and then the cable passes through a hole 832 on the protective cover 83; when the protective cover needs to be detached, the handle 822 is pressed, the lock catch 821 rotates and is separated from the fixed column 831 on the protective cover 83, after a cable passes out from the wire outlet 832 on the protective cover 83, the protective cover 83 is buckled above the junction box body 82, the handle 822 is rotated upwards, and the fixed column 831 falls into the lock catch 821, so that the protective cover 83 is fixed;

when the counter hook device 10 is installed, the first supporting block 101 and the second supporting block 102 are welded according to the distance between the two main beams 11, and the distance between the hook part 105 and the main beams 11 is adjusted by installing the adjusting rod 107 at the height of the supporting frame 106, so that the counter hook device 10 is suitable for the main beams 11 with different specifications.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "top", "bottom", "horizontal", "vertical", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.

Claims (10)

1. The utility model provides a chain bridge crane, includes the hoist roof beam structure, and the hoist roof beam structure includes two upper end beams that parallel and interval set up, is equipped with two parallel and interval set up's girder between two upper end beams, and the top at upper end beam is fixed in the detachable of tip of two main beams, and upper end beam passes through the movable assembly of cart running gear on the track of cart running, its characterized in that: the top end of the main beam is movably provided with a trolley, the trolley is provided with a lifting mechanism and a cable winding and unwinding device, a crane hook is arranged below the lifting mechanism, and the crane hook is connected to the lifting mechanism through a chain;

the cart travelling mechanism comprises cart travelling wheels which are rotatably assembled at two ends of the upper end beams, gear columns which are arranged in parallel with the main beams are arranged between the two upper end beams, two ends of each gear column are in transmission connection with the cart travelling wheels on the upper end beams, the cart travelling mechanism also comprises a support frame which is fixed on a trolley, and a plurality of groups of cart power mechanisms are fixed at the top ends of the support frame and are in transmission connection with the gear columns;

The lifting mechanism comprises a lifting reel which is horizontally arranged, two ends of the lifting reel can be rotatably assembled on the lifting trolley, a chain notch for assembling a chain is formed in the lifting reel, the upper end of the chain is assembled in the chain notch, and the lower end of the chain is detachably fixed on a crane hook; lifting motors are arranged on the lifting trolleys at two ends of the lifting winding drum, the two lifting motors are symmetrically arranged, and power output shafts of the two lifting motors are in transmission connection with the lifting winding drum.

2. A chain bridge crane according to claim 1, characterized in that: the cart power mechanism is arranged in two groups and symmetrically arranged, the cart power mechanism comprises a cart traveling motor which is vertically arranged, a first bevel gear is fixed on a power output shaft of the cart traveling motor, a transmission shaft which is horizontally arranged is rotatably assembled at the lower end of the support frame, a second bevel gear and a first gear are fixed on the transmission shaft, the first bevel gear and the second bevel gear are meshed with each other, and the first gear is meshed with the gear column; the cart travelling wheel comprises a supporting part, supporting shafts which are horizontally arranged are fixed at two ends of the supporting part, the supporting shafts are rotatably assembled on an upper end beam through wheel bearing assemblies, one end of the supporting part is provided with a gear part, the gear part and the supporting part are coaxially arranged, the outer diameter of the gear part is larger than that of the supporting part, and the supporting part is in rolling fit with a cart travelling rail; a support rod which is arranged horizontally is rotatably connected to an upper end beam above the cart travelling wheel through a support rod bearing, one end of the support rod is detachably and fixedly connected with the gear column in a coaxial line, a second gear is fixed on the support rod, and the second gear is meshed with the gear part of the cart travelling wheel; a gear frame is fixed on the main beam below the gear column, one end of the gear frame extends to the lower side of the gear column, a second gear is rotatably assembled on the gear frame, and the upper end of the second gear is meshed with the gear column.

3. A chain bridge crane according to claim 1, characterized in that: the cable winding and unwinding device comprises a vertically arranged protective shell, wherein the upper end of the protective shell is detachably fixed on the trolley, the upper end of the protective shell extends upwards to the upper side of the lifting reel, the bottom end of the protective shell extends downwards to the lower side of the trolley, a fixed pulley block is rotatably assembled in the top end of the protective shell, a movable pulley block which is arranged corresponding to the fixed pulley block is arranged in the protective shell below the fixed pulley block, and a cable is wound between the movable pulley block and the fixed pulley block; the top end of the protective shell is provided with a plurality of guide wheel brackets, the guide wheel brackets are rotatably provided with guide wheels and wire pressing wheels, the guide wheels and the wire pressing wheels are arranged in parallel and at intervals, and a cable passes through between the guide wheels and the wire pressing wheels and is wound on the guide wheels; the inside slide rail that is equipped with two vertical settings of cable winding and unwinding devices's protective housing, two slide rails are fixed respectively in the both sides of running block, and the both sides of running block all are fixed with the slider, slider sliding assembly on the slide rail.

4. A chain bridge crane according to claim 3, characterized in that: pay-off holes are formed in the bottom end of a protective shell of the cable winding and unwinding device, a camera support is detachably fixed to the bottom end of the protective shell, and a camera is assembled on the camera support.

5. A chain bridge crane according to claim 1, characterized in that: the crane lifting hook comprises a lifting hook supporting pipe which is vertically arranged, the upper end of the lifting hook supporting pipe is detachably fixed on a chain, a lower supporting table is detachably fixed at the bottom end of the lifting hook supporting pipe, an upper supporting table which is horizontally arranged is arranged above the lower supporting table, a plurality of supporting plates which are uniformly arranged at intervals are arranged between the upper supporting table and the lower supporting table, the upper supporting table is fixed on the lower supporting table through the supporting plates, a rotating motor which is vertically arranged is fixedly arranged at the top end of the upper supporting table, a connector is rotatably assembled at the top end of the lower supporting table through a supporting bearing, the upper end of the connector is in transmission connection with a power output shaft of the rotating motor, a connecting plate which is vertically arranged is arranged below the lower supporting table, the upper end of the connecting plate upwards extends out of the lower supporting table and is detachably and fixedly connected with the connector, and the lifting hook is detachably fixed at the lower end of the connecting plate.

6. A chain bridge crane according to claim 5, characterized in that: a lifting appliance reverser is arranged between the connecting plate and the lifting hook, the lifting appliance reverser comprises a vertically arranged supporting column, a vertically arranged rectangular through hole is formed in the supporting column, a horizontally arranged fixing hole is formed in the side surface of the supporting column, a fixing hole which corresponds to the fixing hole in the supporting column is formed in the connecting plate, and the supporting column is fixedly connected with the connecting plate through a pin shaft; one end of the pin shaft is fixed with a handle, the handle is connected with a pin shaft fixing chain, and the other end of the pin shaft fixing chain is fixed on the support column; the lower extreme of support column is equipped with the baffle that is L, and the bottom mounting of support column has the ring flange, and the support column passes through the ring flange and can dismantle fixed connection with the lifting hook, is equipped with the anticreep hook piece on the lifting hook.

7. A chain bridge crane according to claim 1, characterized in that: and a lifting frame for lifting the lifting trolley is arranged above the lifting mechanism, four corners of the bottom end of the lifting frame are fixed on the lifting trolley, the lifting frame is a dome-shaped frame, and lifting holes are formed in the top end of the lifting frame.

8. A chain bridge crane according to claim 1, characterized in that: the crane trolley is provided with a junction box, the junction box comprises a base with a fixing function, a plurality of junction box bodies are fixed at the top end of the base, two sides of each junction box body are rotatably connected with a lock catch, the two lock catches are symmetrically arranged, and a handle is fixed between the two lock catches; the upper side of terminal box is equipped with the protective cover, and the both sides of protective cover apart from being fixed with the fixed column that sets up with the hasp one-to-one, and the wire outlet has been seted up to one side of protective cover, and the aviation connector is assembled in the wire inlet, and the below of base is equipped with the wire inlet.

9. A chain bridge crane according to claim 1, characterized in that: a vertical lead frame is fixed on an upper end beam on the left side of the main beam, a cart support chain rail parallel to the upper end beam is arranged on one side of the lead frame, the upper end of the cart support chain rail is open, two L-shaped support strips are arranged in the cart support chain rail, the support strips are fixed on the inner wall of the cart support chain rail, a space exists between the two support strips, a cart support chain is arranged on the support strips, and one end of the cart support chain is fixed with the lead frame; a trolley support chain track is fixed on one side of the main beam, and a trolley support chain is arranged in the trolley support chain track.

10. A chain bridge crane according to claim 1, characterized in that: the both ends of trolley all are equipped with reverse hook device, reverse hook device includes first supporting shoe and second supporting shoe, first supporting shoe and second supporting shoe all correspond to be fixed on the trolley, be connected with first support arm through the articulated shaft is rotatable on the first supporting shoe, be connected with the second support arm through the articulated shaft is rotatable on the second supporting shoe, first support arm and second support arm symmetry set up, and the bottom of first support arm and second support arm all is equipped with the couple portion that is the L type, the top of first support arm and second support arm is equipped with the regulation pole, it extends to the top of trolley to adjust the pole, be fixed with the fixed bolster of vertical setting on the trolley, be equipped with a plurality of mounting hole that is used for fixed regulation pole on the fixed bolster, each mounting hole from the top down arranges in proper order.

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