CN210685540U - Intelligent parking robot - Google Patents

Abstract

The utility model discloses an intelligence parking robot relates to the technical field of robot, including the mounting bracket, still including installing driving motor, mikan mu wheel and the elevating system on the mounting bracket, mecanum wheel rotates to be connected in the both sides of mounting bracket, just mecanum wheel sets up along the even interval of length direction of mounting bracket, driving motor's output shaft links to each other with mecanum wheel, elevating system includes pneumatic cylinder, butt piece and backup pad, the pneumatic cylinder links to each other with the mounting bracket, fixedly connected with butt piece on the piston rod of pneumatic cylinder, the butt groove has been seted up in the backup pad, butt piece and butt groove looks joint, the butt has the subassembly of accepting that is used for accepting the car in the backup pad. The utility model discloses have the demand that reduces intelligent parking robot in the garage and with reduce cost's effect.

Description

Intelligent parking robot

Technical Field

The utility model belongs to the technical field of the technique of robot and specifically relates to an intelligence parking robot is related to.

Background

In recent years, with the rapid development of automobile industrialization and urbanization in China, the number of urban motor vehicles is increasing, and the problem of difficult parking in large, medium and small cities is solved. Mechanical three-dimensional parking lots have been developed, and mainly aim to solve the problem that parking in population, building dense areas and public service areas is difficult. The intelligent parking robot used in cooperation with the three-dimensional parking garages is a parking-assisting robot which can be automatically controlled through big data, the Internet and artificial intelligence.

And a conventional parking robot generally includes a mounting frame, a support plate mounted on the top of the mounting frame, a driving assembly mounted in the mounting frame, and omni wheels driven by the driving assembly and mounted on the circumferential side of the mounting frame. When the automobile enters the designated position of the three-dimensional parking garage, the automobile is stopped on the supporting plate, and then the mounting frame is driven by the lifting system of the three-dimensional parking garage to drive the automobile to the floor of the vacant parking space. And after the car arrives at the floor, the driving assembly drives the omnidirectional wheel to move to the vacant parking space to complete the parking operation.

The above prior art solutions have the following drawbacks: when the parking robots move, each automobile needs one parking robot to support and transport, so that one parking lot needs the parking robots with the number suitable for the parking places to be matched for use so as to normally operate, and the cost is high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an intelligence parking robot carries out parking processing to the car through setting up elevating system and accepting the subassembly, reduces parking robot's use quantity, reduce cost.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides an intelligent parking robot, includes the mounting bracket, still includes driving motor, mikan mu wheel and the elevating system who installs on the mounting bracket, mikan mu wheel rotates to be connected in the both sides of mounting bracket, just the even interval of length direction of mounting bracket is followed to mikan mu wheel and is set up, driving motor's output shaft links to each other with mikan mu wheel, elevating system includes pneumatic cylinder, butt piece and backup pad, the pneumatic cylinder links to each other with the mounting bracket, fixedly connected with butt piece on the piston rod of pneumatic cylinder, the butt groove has been seted up in the backup pad, butt piece and butt groove looks joint, the butt has the subassembly of accepting that is used for accepting the car in the backup pad.

Through adopting above-mentioned technical scheme, intelligent parking robot is when the operation, at first through starting the pneumatic cylinder, and the piston rod of pneumatic cylinder drives the butt piece and promotes and accept the subassembly and rise, accepts the subassembly and drives the car and rise, accepts subassembly and ground phase separation, then starts driving motor, and driving motor's output shaft rotates and drives mecanum wheel and rotate to make intelligent parking robot drive the car transportation to the parking stall on. After transporting to the parking stall, the pneumatic cylinder restarts again for the piston rod shrink, the piston rod drives the backup pad and descends, and the backup pad drives accepts the subassembly and descends and ground looks butt, then intelligent parking robot continues to move to another accepts the subassembly below, carries out one side down and transports. Therefore, the number of the intelligent robots can be reduced, and the cost is reduced.

The utility model discloses further set up to: be provided with the locking piece in the backup pad, the locking piece includes fixture block, turning block and card frame, fixed connection fixture block on the backup pad diapire of butt joint groove one side, the draw-in groove has been seted up on the lateral wall that deviates from the butt joint groove on the fixture block, one side that the fixture block was kept away from in the butt joint groove is provided with the turning block, the one end that the turning block is close to the butt joint groove is articulated mutually with the diapire of backup pad, one side that is close to the pin joint of turning block on the turning block articulates there is the card frame, the piston rod of pneumatic cylinder passes the card frame, the card frame is kept away from the one end that links to each other with the turning block and is blocked joint.

Through adopting above-mentioned technical scheme, after the joint between butt piece and the butt groove, rethread locking piece locks to improve the stability of being connected between butt piece and the butt groove. When the locking piece locks, rotate earlier that the turning block keeps away from the one end of pin joint and the diapire of backup pad and keep away from mutually, then rotate the draw-in groove looks joint on card frame and the fixture block, rotate the diapire of turning block and backup pad and laminate mutually again, the chucking between card frame and the draw-in groove this moment, and the card frame supports the butt piece tightly to realize the further stability of joint between butt piece and the butt groove.

The utility model discloses further set up to: the lifting mechanism further comprises a positioning assembly, the positioning assembly comprises a positioning block and a limiting part, the positioning block is fixedly connected with the top wall of the supporting plate, a positioning groove matched with the positioning block is formed in the bearing assembly, the positioning block is clamped with the positioning groove, the limiting part is arranged on the positioning block, and the limiting part is clamped with the bearing assembly.

Through adopting above-mentioned technical scheme, locating piece and constant head tank joint make the backup pad when supporting and accepting the subassembly, accept the subassembly and be difficult for taking place to slide or squint in the backup pad, improve and accept the stability after the subassembly is promoted. The locating part is further carried on spacingly to the joint between locating piece and the constant head tank for the joint between the locating piece constant head tank is more stable.

The utility model discloses further set up to: the locating part includes spring and stopper, more than one holding tank has been seted up along the direction of height of locating piece on the lateral wall on the locating piece, install the spring in the holding tank, spring one end links to each other with the tank bottom of holding tank is fixed, the other end of spring is connected with spherical stopper, set up on the lateral wall of constant head tank with the spherical spacing groove of stopper matched with, stopper and spacing groove looks joint.

Through adopting above-mentioned technical scheme, the locating piece is when inserting the constant head tank in, the lateral wall of constant head tank open end extrudees the stopper earlier for the stopper is impressed in the holding tank, then the locating piece insert in the constant head tank with the constant head tank joint after, the stopper is corresponding with the spacing groove, when pressure on the stopper disappears, the spring pops out the holding tank again with the stopper for recovering deformation, make stopper and spacing groove looks joint, further carry on spacingly to the joint between locating piece and the constant head tank, improve the support stability of backup pad.

The utility model discloses further set up to: the supporting assembly comprises a supporting plate, a supporting leg, a stop block and a sliding part, the supporting leg is fixedly connected with the supporting plate, the supporting plate is abutted against the supporting plate, the sliding part which is adjusted along the length direction of the supporting plate is arranged on the automobile supporting surface of the supporting plate, and the stop block is connected to the sliding part.

Through adopting above-mentioned technical scheme, accept the board and promoted by the backup pad butt and rise to can drive and accept the car that stops on the board and rise, the supporting legs and the ground separation of accepting the board, then accept the board and accept the car that stops on the board and can be transported to appointed parking stall together along with the backup pad on. The sliding parts on the bearing plates limit the front wheels and the rear wheels of the automobile on the bearing plates so as to prevent the automobile from moving on the bearing plates and improve the stability of the automobile on the bearing plates.

The utility model discloses further set up to: the slider is including driving actuating cylinder, sliding block and support piece, it installs on the diapire of accepting the board to drive actuating cylinder, it is connected with the sliding block on the piston rod of driving actuating cylinder, the sliding block is articulated mutually with the fender position piece, it has seted up the sliding groove on the board to accept, fender position piece slides with the sliding groove and links to each other, accept to set up the slide hole that communicates with the sliding groove on the roof of board, the both ends fixedly connected with dog of fender position piece, the dog slides with the sliding hole and links to each other, install support piece between fender position piece and the sliding block.

Through adopting above-mentioned technical scheme, drive actuating cylinder drive sliding block and slide, sliding block drives and keeps off the position piece and slide in the sliding groove, keeps off the position piece and drives the dog and slide in the sliding hole for keep off the position piece butt joint to the front and back wheel of car on, thereby carry out spacing stability in order to keep the car to the car. The supporting piece is used for improving the abutting strength of the stop block to the automobile.

The utility model discloses further set up to: support piece includes bracing piece, slider and torsional spring, the one end of bracing piece is close to one side of accepting the board with the sliding block and articulates mutually, the other end fixedly connected with slider of bracing piece, the spout has been seted up along the direction of height of fender position piece on the lateral wall of one side that the fender position piece is close to the sliding block, slider and spout sliding connection, the mounting groove has been seted up to sliding block and fender position piece articulated one of looks, be provided with the installation pole in the direction of the perpendicular sliding block direction of motion of mounting groove, the cover is equipped with the torsional spring on the installation pole, torsional spring one end links to each other with the tank bottom of mounting groove is fixed, the other end of torsional spring with accept the board and fix and link to each other.

Through adopting above-mentioned technical scheme, when the sliding block was driven actuating cylinder and is driven and contract, the lateral wall in sliding hole carries out the butt and promotes the dog and rotate to the dog, and the dog rotates the block and together rotates, and when the block rotated, the torsional spring was stretched, and the bracing piece rotates simultaneously, and the slider on the bracing piece slides in the spout to make the dog rotate from sliding hole and descend, make the car more convenient when leaving the board of accepting, can not receive the hindrance of dog. And when the car went to take over the board, when driving actuating cylinder and promoting the slider and remove, when keeping off the position piece and remove to the slide opening below, pressure on the dog disappears, the dog receives the pulling force of torsional spring and overturns out the slide opening, when the dog upset, the bracing piece also overturns simultaneously, slider on the bracing piece slides in the spout to the spout keep away from the one end of a position piece pin joint, after the dog rotated to a position piece and the perpendicular back of slider, the dog was connected with the front and back wheel looks butt of car, perhaps the dog continues to slide to the front and back wheel looks butt with the car, thereby carry out spacing fixed to the car. A stable triangular structure is formed between the support rod and the stop block as well as between the support rod and the slide block, so that the abutting strength of the stop block and the stop block to the automobile is improved.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the lifting mechanism is arranged in the parking robot and the bearing assembly is utilized to support the automobile, so that the parking robot can be repeatedly used, the demand of the parking robot in one parking garage is reduced, and the cost is reduced;

2. the sliding part is arranged on the bearing plate to limit the automobile, so that the automobile is not easy to slide on the bearing plate, and the stability of the automobile on the bearing plate is improved.

Drawings

Fig. 1 is a perspective view of an intelligent parking robot;

fig. 2 is a sectional view of the intelligent parking robot for showing a connection relationship between the lifting mechanism and the mounting bracket;

fig. 3 is a sectional view of the intelligent parking robot for showing a connection relationship between the locking member and the elevating mechanism and a connection relationship between the supporting plate and the receiving plate;

FIG. 4 is an enlarged view of a portion of FIG. 3;

fig. 5 is a partially enlarged view of B in fig. 2.

Reference numerals: 1. a mounting frame; 11. a drive motor; 12. a Mecanum wheel; 2. a lifting mechanism; 21. a hydraulic cylinder; 22. a butting block; 221. a butt joint groove; 23. a support plate; 24. a positioning assembly; 241. positioning blocks; 242. a limiting member; 243. positioning a groove; 244. a spring; 245. a limiting block; 246. accommodating grooves; 25. a locking member; 251. a clamping block; 252. rotating the block; 253. clamping a frame; 254. a card slot; 255. a limiting groove; 3. a receiving assembly; 31. a bearing plate; 32. supporting legs; 33. a stop block; 34. a slider; 341. a sliding block; 342. a driving cylinder; 343. a support member; 344. a sliding groove; 345. a sliding hole; 346. a stopper; 35. a support bar; 351. a slider; 352. a torsion spring; 353. a chute; 354. a placing groove; 355. mounting a rod; 356. the support rod rotates the groove.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, the utility model discloses an intelligent parking robot, including mounting bracket 1, driving motor 11, mecanum wheel 12, elevating system 2 and accept subassembly 3. The side walls of the two sides of the mounting rack 1 are respectively and rotatably connected with 4 Mecanum wheels 12, and the Mecanum wheels 12 are uniformly arranged along the length direction of the side wall of the mounting rack 1 at intervals. The mounting frame 1 is internally provided with driving motors 11 which are in one-to-one correspondence with the Mecanum wheels 12, and the output shafts of the driving motors 11 are connected with the rotating shafts of the Mecanum wheels 12 through couplings.

Referring to fig. 2, a lifting mechanism 2 is further installed in the mounting frame 1, and the lifting mechanism 2 includes a hydraulic cylinder 21, an abutment block 22, a support plate 23 and a positioning assembly 24. Pneumatic cylinder 21 fixed mounting is provided with backup pad 23 in mounting bracket 1 above pneumatic cylinder 21 in the mounting bracket 1, fixedly connected with butt piece 22 on the piston rod of pneumatic cylinder 21, has seted up butt groove 221 on the diapire of backup pad 23, butt piece 22 and butt groove 221 looks joint.

Referring to fig. 2 and 3, a locking member 25 is provided on the bottom wall of the support plate 23, and the locking member 25 includes a latch 251, a rotation block 252, and a latch frame 253. The bottom wall of the supporting plate 23 on one side of the abutting groove 221 is hinged with a rotating block 252, and the hinged point of the rotating block 252 is arranged at one end, close to the abutting groove 221, of the rotating block 252. One end of the rotating block 252 close to the hinge point is hinged with a clamping frame 253, and a piston rod of the hydraulic cylinder 21 penetrates through the clamping frame 253 and is connected with the clamping frame 253 in a sliding manner. A clamping block 251 is fixedly connected to the bottom wall of the support plate 23 at the other side of the abutting groove 221, and a clamping groove 254 matched and clamped with the clamping frame 253 is formed in the clamping block 251.

Referring to fig. 3 and 4, a receiving member 3 is disposed above the support plate 23, and the receiving member 3 includes a receiving plate 31. The supporting plate 23 is provided with a positioning assembly 24, and the positioning assembly 24 includes a positioning block 241 and a limiting block 242. The positioning blocks 241 are fixedly connected with the top wall of the support plate 23, and the positioning blocks 241 are uniformly arranged along the circumferential direction of the support plate 23 at intervals. The bottom wall of the bearing plate 31 is provided with a positioning groove 243 matching with the positioning block 241, and the positioning block 241 is clamped with the positioning groove 243. The 4 side walls of the positioning block 241 are provided with a limiting member 242, and the limiting member 242 includes a spring 244 and a limiting member 245. Evenly spaced apart along the direction of height of locating piece 241 on the 4 lateral walls of locating piece 241 and being equipped with 3 holding tanks 246, be provided with spring 244 in the holding tank 246, spring 244 one end is fixed continuous with the tank bottom of holding tank 246, the other end fixedly connected with stopper 245 of spring 244, stopper 245 sets up to be spherical. The side wall of the positioning groove 243 is provided with a limiting groove 255 matched with the limiting block 245, and the limiting block 245 is clamped with the limiting groove 255.

Referring to fig. 3, the receiving assembly 3 includes a supporting leg 32, a stopper 33, a stopper 346, and a sliding member 34, in addition to the receiving plate 31. The supporting legs 32 are perpendicular to and fixedly connected with four corners of the bearing plate 31. When the driving cylinder 342 is in a contracted state, the supporting leg 32 is in contact with the ground, and the positioning block 241 is separated from the receiving plate 31. When the driving cylinder 342 is in the extended state, the support leg 32 is separated from the ground, and the support plate 23 is in contact with the receiving plate 31.

Referring to fig. 2 and 5, the sliding member 34 includes a driving cylinder 342, a sliding block 341 and a support member 343, the driving cylinder 342 is fixedly mounted on the bottom wall of the two ends of the receiving plate 31 in the length direction, the sliding block 341 is fixedly connected to the piston rod of the driving cylinder 342, and the stop block 33 is hinged to the sliding block 341. Two ends of the bottom wall of the bearing plate 31 are provided with sliding grooves 344 along the length direction of the bearing plate 31, the stop block 33 is connected with the sliding grooves 344 in a sliding manner, two sides of the top wall of the bearing plate 31 in the width direction are respectively provided with 2 sliding holes 345, the sliding holes 345 are communicated with the sliding grooves 344, and the 2 sliding holes 345 on the same side of the bearing plate 31 are symmetrical about the symmetry axis of the bearing plate 31 in the length direction. The two ends of the stop block 33 are fixedly connected with a stop 346, and the stop 346 is slidably connected with the sliding hole 345.

Referring to fig. 2 and 5, a support 343 is arranged between the stopper 33 and the sliding block 341, the support 343 includes a support rod 35, a slider 351 and a torsion spring 352, a support rod rotating groove 356 communicated with the sliding groove 344 is formed in the bottom wall of the receiving plate 31, a support rod 35 is arranged in the support rod rotating groove 356, one end of the support rod 35 is hinged to one end of the sliding block 341 close to the stopper 33, a slider 351 is fixedly connected to the other end of the support rod 35, a sliding groove 353 is formed in the side wall of one side of the stopper 33 close to the driving cylinder 342 along the height direction of the stopper 33, and the slider 351 is slidably connected to the sliding groove 353.

Referring to fig. 5, a mounting groove 354 is formed in one end of the sliding block 341, which is hinged to the stopper 33, a mounting rod 355 is arranged in the mounting groove 354 and perpendicular to the moving direction of the sliding block 341, two ends of the mounting rod 355 are fixedly connected with the side wall of the mounting groove 354, a torsion spring 352 is sleeved on the mounting rod 355, one end of the torsion spring 352 is fixedly connected with the bottom of the mounting groove 354, and the other end of the torsion spring 352 is fixedly connected with the bearing plate 31.

The implementation principle of the embodiment is as follows: when the car enters the designated position of the parking garage, the car first drives into the bearing plate 31, and when the car stops and enters the parking stage, the parking robot starts to work. Firstly, the driving cylinder 342 on the bearing plate 31 is started, the piston rod of the driving cylinder 342 drives the sliding block 341 to move, when the sliding block 341 moves to drive the stop block 33 to move to the position below the sliding hole 345, the stop block 33 turns over and passes through the sliding hole 345 by the tensile force of the torsion spring 352 which recovers deformation, meanwhile, the sliding block 351 slides to one end of the sliding groove 353 away from the hinge point of the stop block 33 along the sliding groove 353, and the support rod 35 supports the sliding block 341 and the stop block 33 tightly. The driving cylinder 342 continues to push the sliding block 341 until the gear block 33 abuts against the wheels of the vehicle.

Then, the hydraulic cylinder 21 is started, the piston rod of the hydraulic cylinder 21 drives the abutting block 22 to push the supporting plate 23 to ascend, the supporting plate 23 ascends to abut against the bearing plate 31 and push the bearing plate 31 to ascend until the supporting foot 32 is separated from the ground. Then the driving motor 11 drives the Michelson master wheel to rotate and move to the parking space. Then the piston rod of the hydraulic cylinder 21 contracts until the supporting foot 32 is abutted against the ground, and then the parking robot moves to a specified position where the vehicle enters for next transportation.

When the automobile is driven away from the bearing plate 31, the driving cylinder 342 is started first, the piston rod of the driving cylinder 342 drives the sliding block 341 to separate from the lower side of the sliding hole 345, when the automobile is separated, the side wall of the sliding hole 345 is firstly abutted to the stopper 33, then in the sliding process of the sliding block 341, the stopper 33 is pushed by the side wall of the sliding hole 345 so that the stopper 33 is turned over, the torsion spring 352 is stretched, the sliding block 351 slides to one end of the stopper 33 close to the hinge point of the stopper 33, and then the stopper 33 is separated from the sliding hole 345 along with the sliding of the sliding block 341. The vehicle is then driven away from the receiving plate 31.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. The utility model provides an intelligence parking robot, includes mounting bracket (1), its characterized in that: the mechanical hand is characterized by further comprising a driving motor (11) arranged on the mounting rack (1), Mecanum wheels (12) and a lifting mechanism (2), wherein the Mecanum wheels (12) are rotatably connected to two sides of the mounting rack (1), and the Mecanum wheels (12) are arranged at intervals along the length direction of the mounting rack (1), the output shaft of the driving motor (11) is connected with the Mecanum wheel (12), the lifting mechanism (2) comprises a hydraulic cylinder (21), a butting block (22) and a supporting plate (23), the hydraulic cylinder (21) is connected with the mounting frame (1), a piston rod of the hydraulic cylinder (21) is fixedly connected with a butting block (22), the supporting plate (23) is provided with a butt joint groove (221), the butt joint block (22) is clamped with the butt joint groove (221), and a bearing assembly (3) for bearing the automobile is abutted to the supporting plate (23).

2. The intelligent parking robot of claim 1, wherein: a locking piece (25) is arranged on the supporting plate (23), the locking piece (25) comprises a clamping block (251), a rotating block (252) and a clamping frame (253), a clamping block (251) is fixedly connected on the bottom wall of the supporting plate (23) at one side of the abutting groove (221), a clamping groove (254) is arranged on the side wall of the clamping block (251) which deviates from the abutting groove (221), a rotating block (252) is arranged on one side of the abutting groove (221) far away from the clamping block (251), one end of the rotating block (252) close to the abutting groove (221) is hinged with the bottom wall of the supporting plate (23), a clamping frame (253) is hinged to one side of the rotating block (252) close to the hinged point of the rotating block (252), the piston rod of pneumatic cylinder (21) passes card frame (253), card frame (253) are kept away from the one end that links to each other with turning block (252) and are connected with draw-in groove (254) looks joint, card frame (253) and butt joint piece (22) looks joint.

3. The intelligent parking robot of claim 1, wherein: elevating system (2) still includes locating component (24), locating component (24) are including locating piece (241) and locating part (242), roof fixed the linking to each other of locating piece (241) and backup pad (23), accept to set up on subassembly (3) with locating piece (241) matched with constant head tank (243), locating piece (241) and constant head tank (243) looks joint, be provided with locating part (242) on locating piece (241), locating part (242) and accept subassembly (3) looks joint.

4. The intelligent parking robot of claim 3, wherein: locating part (242) includes spring (244) and stopper (245), more than one holding tank (246) have been seted up along the direction of height of locating piece (241) on the lateral wall on locating piece (241), install spring (244) in holding tank (246), the tank bottom of spring (244) one end and holding tank (246) is fixed to be linked to each other, the other end of spring (244) is connected with spherical stopper (245), set up spherical spacing groove (255) with stopper (245) matched with on the lateral wall of constant head tank (243), stopper (245) and spacing groove (255) looks joint.

5. The intelligent parking robot of claim 1, wherein: accept subassembly (3) including accepting board (31), supporting legs (32), fender position piece (33) and slider (34), supporting legs (32) with accept board (31) fixed linking to each other, accept board (31) and backup pad (23) looks butt, the car of accepting board (31) is accepted and is provided with on the face along accepting slider (34) that board (31) length direction adjusted, be connected with fender position piece (33) on slider (34).

6. The intelligent parking robot of claim 5, wherein: the sliding part (34) comprises a driving cylinder (342), a sliding block (341) and a supporting part (343), the driving cylinder (342) is installed on the bottom wall of the bearing plate (31), the piston rod of the driving cylinder (342) is connected with the sliding block (341), the sliding block (341) is hinged to the gear block (33), a sliding groove (344) is formed in the bearing plate (31), the gear block (33) is connected with the sliding groove (344) in a sliding mode, a sliding hole (345) communicated with the sliding groove (344) is formed in the top wall of the bearing plate (31), two ends of the gear block (33) are fixedly connected with a stop block (346), the stop block (346) is connected with the sliding hole (345) in a sliding mode, and the supporting part (343) is installed between the gear block (33) and the sliding block (341).

7. The intelligent parking robot of claim 6, wherein: the supporting piece (343) comprises a supporting rod (35), a sliding block (351) and a torsion spring (352), one end of the supporting rod (35) is hinged with one side of the sliding block (341) close to the bearing plate (31), the other end of the supporting rod (35) is fixedly connected with a sliding block (351), a sliding groove (353) is arranged on the side wall of one side of the stop block (33) close to the sliding block (341) along the height direction of the stop block (33), the sliding block (351) is connected with the sliding groove (353) in a sliding way, a placing groove (354) is arranged at one end of the sliding block (341) which is hinged with the stop block (33), a mounting rod (355) is arranged in the arrangement groove (354) along the direction vertical to the movement direction of the sliding block (341), the mounting rod (355) is sleeved with a torsion spring (352), one end of the torsion spring (352) is fixedly connected with the groove bottom of the placement groove (354), and the other end of the torsion spring (352) is fixedly connected with the bearing plate (31).

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