CN210734319U

CN210734319U - Wing-shaped van

Info

Publication number: CN210734319U
Application number: CN201921614855.8U
Authority: CN
Inventors: 杨广正
Original assignee: Zhengzhou Far East Supply Chain Management Co Ltd
Current assignee: Zhengzhou Far East Supply Chain Management Co Ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-06-12
Anticipated expiration: 2029-09-25

Abstract

The utility model relates to a commodity circulation transportation field, more specifically say, it relates to a wing van. Including automobile body and carriage, the carriage is provided with the support body, railway carriage or compartment board and bottom plate, bottom plate and automobile body fixed connection, the support body mount is established on the bottom plate, the railway carriage or compartment board sets up in pairs, and articulate the both sides at the support body respectively, be provided with the drive division on the support body, the drive division is articulated with support body and carriage respectively, the railway carriage or compartment board includes railway carriage or compartment board and a plurality of lower railway carriage or compartment board, it is articulated with the support body to go up the railway carriage or compartment board, lower railway carriage or compartment board is articulated with the automobile body, be provided with fixed railway carriage or compartment board down between the railway carriage or compartment board, fixed railway carriage or compartment board and bottom plate fixed connection, go up railway carriage or compartment board and lower railway carriage or compartment board and support body between through locking mechanism fixed connection, locking mechanism includes locking portion one and a plurality of locking portions, locking portion one includes rotation portion and locking portion, rotation portion.

Description

Wing-shaped van

Technical Field

The utility model relates to a commodity circulation transportation field, more specifically say, it relates to a wing van.

Background

In order to improve the loading and unloading efficiency, a wing-shaped boxcar is used in the field of logistics transportation. When the wing-shaped box plate of the truck type is driven by the driving device to be opened, goods can be loaded and unloaded from two sides and the rear side of the cargo box in three directions, and the efficiency is greatly improved compared with the single truck type which loads and unloads the goods from the rear side of the cargo box.

For example, chinese patent No. CN 102351014A discloses a multifunctional wing spread type truck and a truck carriage. The van body is a wingspan van body, one or more of a left side door, a right side door and a rear door in the wingspan van body are opened in an upward-lifting mode under the action of a gas spring, and the left side door, the right side door and the box body are hinged.

The left side door and the right side door of the multifunctional wingspan type truck and the truck carriage body are of right-angle structures respectively, the left side door and the right side door are driven to unfold around the hinged position through the air springs, the truck carriage body is longer, the rotating radius formed by the end parts of the left side door and the right side door and the hinged position of the truck carriage body is larger, and meanwhile, the air springs are extremely easy to damage due to the fact that the left side door and the right side door have larger masses.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a wing van, it adopts components of a whole that can function independently carriage and locking mechanism, reaches the tip that reduces left side door and right side door and the effect of the radius of rotation that the articulated department of support body formed.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a wing-shaped van comprises a body and a carriage, wherein the carriage is provided with a frame body, carriage plates and a bottom plate, the bottom plate is fixedly connected with the body, frame body fixing frames are arranged on the bottom plate, the carriage plates are arranged in pairs, and articulate the both sides at the support body respectively, be provided with the drive division on the support body, the drive division is articulated with support body and carriage respectively, the railway carriage or compartment board includes railway carriage or compartment board and a plurality of lower railway carriage or compartment board, it is articulated with the support body to go up the railway carriage or compartment board, lower railway carriage or compartment board is articulated with the automobile body, be provided with fixed railway carriage or compartment board down between the railway carriage or compartment board, fixed railway carriage or compartment board and bottom plate fixed connection, go up railway carriage or compartment board and lower railway carriage or compartment board and pass through locking mechanism fixed connection between lower railway carriage or compartment board and the support body, locking mechanism includes locking portion one and a plurality of locking portion two, locking portion one is including rotation portion and locking portion, rotation portion includes axis of rotation and rotation handle, axis of rotation and.

Through the technical scheme, when the railway carriage or compartment board expandes, it rotates around railway carriage or compartment board and the articulated department of support body to go up the railway carriage or compartment board, the railway carriage or compartment board rotates around the pin joint of railway carriage or compartment board and bottom plate down, open the carriage, the rotatory radius that the articulated department of tip that has reduced the railway carriage or compartment board down formed, and go up railway carriage or compartment board and down through locking mechanism fixed connection between railway carriage or compartment board and the support body, prevent that wing-shaped van from when going on, it can take place relative slip with lower railway carriage or compartment board fixed connection's part to go up the railway carriage or compartment board, prevent to go up railway carriage or compartment board and lower railway carriage or compartment board automatic expansion, avoid appearing the incident.

The utility model discloses further set up to: go up the railway carriage or compartment board and include first railway carriage or compartment board and second railway carriage or compartment board, first railway carriage or compartment board is connected with the second railway carriage or compartment board is perpendicular, and the second railway carriage or compartment is inboard to be fixed to be provided with the mounting groove, and locking portion one sets up in the mounting groove, the rotation hole has been seted up to the tank bottom of mounting groove, and the lateral wall of the tank bottom of mounting groove is fixed to be set up one and rotates the sleeve, rotates hole and rotation sleeve intercommunication, and the axis of rotation runs through and rotates the sleeve, and axis of rotation and rotation sleeve threaded connection, axis of rotation one end are arranged in the mounting groove, and outside the other end.

Through above-mentioned technical scheme, through rotating the rotatory axis of rotation of handle, make locking plate contradict with fixed railway carriage or compartment board, can be fixed with last railway carriage or compartment board with fixed railway carriage or compartment board, rotate the axis of rotation again until locking plate and fixed railway carriage or compartment board contactless, can remove the locking relation between last railway carriage or compartment board and the fixed railway carriage or compartment board.

The utility model discloses further set up to: the locking part comprises a locking plate and a plurality of fixing nuts, the locking plate is sleeved on the rotating shaft, and the fixing nuts are sleeved on the rotating shaft and are respectively arranged on two sides of the locking plate.

Through the technical scheme, the fixed nut sleeves the rotating rod, the two sides of the locking plate are respectively arranged, the fixed nuts are screwed, the locking plate can be fixed on the rotating shaft, and when the locking plate needs to be replaced, the locking plate is convenient to disassemble and install.

The utility model discloses further set up to: the handle rotates includes connecting rod and grab handle, and the grab handle sets up with the connecting rod is perpendicular, makes to rotate the handle and forms a T type structure, and the one end that the mounting groove was arranged in to the dwang is provided with and deviates from the one end of grab handle articulated with the connecting rod, and the tank bottom of mounting groove is provided with a locking seat, and the locking seat is provided with and is provided with installation passageway and fixed orifices, and the fixed orifices is seted up on the lateral wall of locking seat.

Through the technical scheme, when the axis of the connecting rod is coincided with the axis of the rotating shaft, the rotating shaft can be rotated by the rotating handle, after the rotating handle is rotated and locked, the rotating handle can be flattened and abutted against the bottom of the mounting groove, meanwhile, the axis of the connecting rod is perpendicular to the axis of the rotating shaft, and then the rotating handle can be retracted, so that the situation that when a truck is driven, surrounding objects mistakenly touch the rotating handle, the first locking part is opened, or the first locking part is cut off and rubbed with the surrounding objects, and the first locking part is damaged is prevented.

The utility model discloses further set up to: the locking portion two is provided with the lockhole including connecting plate, tool to lock and locking lever on the connecting plate, and the connecting plate is articulated with down the railway carriage or compartment board, and the locking lever is fixed on fixed railway carriage or compartment board, and the tool to lock is articulated with fixed railway carriage or compartment board.

Through above-mentioned technical scheme, the connecting plate is passed through the lockhole to the locking lever, and the tool to lock is taken on the locking lever and is locked, and then fixed down the railway carriage or compartment board on fixed railway carriage or compartment board and support body.

The utility model discloses further set up to: the lockset comprises a lock body and a wrench, wherein a lock frame is arranged on the lock body, the lock frame is hinged with the wrench, and the wrench is hinged with the fixed compartment plate.

Through above-mentioned technical scheme, pull the spanner, rotate the lock body, lock the tool to lock, and then fixed railway carriage or compartment board and fixed railway carriage or compartment board.

The utility model discloses further set up to: the lock frame is provided with a lock hook, the lock hook comprises a lock ring, a sliding rod and a sliding plate, sliding grooves are symmetrically formed in the lock frame, the sliding plate is erected between the sliding grooves, the sliding rod penetrates through the lock frame and is in sliding connection with the lock frame, one end of the sliding rod is fixedly connected with the sliding plate, and the lock ring is fixedly connected with the other end of the sliding rod.

Through the technical scheme, the lock ring is lapped on the lock rod, and the distance between the hinged point of the wrench and the lock frame and the distance between the connecting point of the lock ring and the lock rod and the fixed compartment plate are smaller than the distance between the hinged point of the lock frame and the fixed compartment plate by the wrench under the plate.

The utility model discloses further set up to: a pressure spring is arranged between the lock frame and the sliding plate, the pressure spring is sleeved on the sliding rod, and two ends of the pressure spring are fixedly connected with the lock frame and the sliding plate respectively.

Through above-mentioned technical scheme, take the catch on the locking lever, spanner under the board, simultaneously, the catch hook makes the sliding plate slide in the spout and compresses the pressure spring on the locking lever, and simultaneously, the pressure spring backward extrusion sliding plate makes the tool to lock.

To sum up, the utility model discloses following beneficial effect has:

(1) when the compartment plates are unfolded, the upper compartment plate rotates around the hinged position of the upper compartment plate and the frame body, the lower compartment plate rotates around the hinged point of the lower compartment plate and the bottom plate, the compartment is opened, the rotating radius formed by the end part of the upper compartment plate and the hinged position of the frame body is reduced due to the arrangement of the lower compartment plate, and the upper compartment plate, the lower compartment plate and the frame body are fixedly connected through locking mechanisms, so that the parts, fixedly connected with the upper compartment plate and the lower compartment plate, of the wing-shaped box type truck are prevented from sliding relatively when the wing-shaped box type truck is driven, the upper compartment plate and the lower compartment plate are prevented from being automatically unfolded, and safety accidents are avoided;

(2) through the T type structure of rotating the handle, when the axis of connecting rod and the axis of rotation when the coincidence is, the rotatable axis of rotation of rotating the handle, after rotating the locking of rotating the handle, can break off with the fingers and thumb the rotation handle and contradict with the tank bottom of mounting groove, simultaneously, the axis of connecting rod is perpendicular with the axis of rotation, and then can pack up the rotation handle, prevent that the freight train is when driving, the thing of surrounding from touching the rotation handle by mistake, open locking portion one, or cut with the pieces with the surrounding thing production and rub, damage locking portion is first-class, reduce the potential safety hazard of existence.

Drawings

Fig. 1 is an overall schematic view of the present invention;

FIG. 2 is an enlarged view taken at A in FIG. 1;

FIG. 3 is an enlarged view at B of FIG. 1;

FIG. 4 is an enlarged view at C of FIG. 1;

FIG. 5 is an enlarged view taken at D in FIG. 1;

fig. 6 is an overall schematic view of the first locking portion.

Reference numerals: 1. a vehicle body; 2. a carriage; 3. a frame body; 30. a drive section; 4. a compartment plate; 40. an upper compartment plate; 400. a first deck panel; 401. a second deck panel; 402. mounting grooves; 403. rotating the hole; 404. rotating the sleeve; 41. a lower carriage plate; 42. a fixed compartment plate; 43. a locking seat; 430. installing a channel; 431. a fixed port; 5. a base plate; 6. a locking mechanism; 7. a first locking part; 70. a rotating part; 700. a rotating shaft; 701. rotating the handle; 702. a connecting rod; 703. a handle; 704. a rubber sleeve; 71. a locking portion; 710. a locking plate; 711. fixing a nut; 8. a second locking part; 80. a connecting plate; 81. A lock; 810. a lock body; 811. a wrench; 812. a lock frame; 813. a chute; 82. a lock lever; 83. a latch hook; 830. a locking ring; 831. a slide bar; 832. a sliding plate; 84. and (5) pressing a spring.

Detailed Description

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

In the embodiment, as shown in fig. 1, the wing-shaped van truck comprises a truck body 1 and a carriage 2, wherein the carriage 2 is provided with a frame body 3, carriage plates 4 and a bottom plate 5, the bottom plate 5 is fixedly connected with the truck body 1, the frame body 3 is fixedly arranged on the bottom plate 5, the carriage plates 4 are arranged in pairs and are respectively hinged on two sides of the frame body 3, the frame body 3 is provided with a driving part 30, the driving part 30 is respectively hinged with the frame body 3 and the carriage 2, the driving part 30 is provided with a hydraulic cylinder, the hydraulic cylinder can drive the carriage plates 4 to be unfolded, the carriage plates 4 comprise an upper carriage plate 40 and a plurality of lower carriage plates 41, the upper carriage plate 404 is hinged with the frame body 3, the lower carriage plate 414 is hinged with the truck body 1, when the carriage plates 4 are unfolded, the upper carriage plate 404 rotates around the hinged part of the upper carriage plate 404 and the frame body 3, the lower carriage plate 414 rotates around the hinged part of the lower carriage plate 414 and the bottom plate 5 to open the carriage 2, the arrangement of, and the upper carriage plate 40 and the lower carriage plate 41 as well as the lower carriage plate 41 and the frame body 3 are fixedly connected through the locking mechanism 6, so that when the wing-shaped van is driven, the parts fixedly connected with the upper carriage plate 40 and the lower carriage plate 41 can slide relatively, the upper carriage plate 40 and the lower carriage plate 41 can be prevented from being automatically unfolded, and safety accidents are avoided.

As shown in fig. 1, a fixed compartment plate 424 is disposed between the lower compartment plates 41, the fixed compartment plate 424 is fixedly connected with the bottom plate 5, the locking mechanism 6 includes a first locking portion 7 and a plurality of second locking portions 8, the upper compartment plate 40 includes a first compartment plate 400 and a second compartment plate 401, the first compartment plate 400 is vertically connected with the second compartment plate 401, as shown in fig. 2, the first locking portion 7 includes a rotating portion 70 and a locking portion 71, the rotating portion 70 is fixedly connected with the locking portion 71, the rotating portion 70 includes a rotating shaft 700 and a rotating handle 701, the rotating shaft 700 is rotatably connected with the rotating handle 701, as shown in fig. 3, a rotating hole 403 is formed at the bottom of the mounting groove 402, a rotating sleeve 404 is fixedly disposed on the outer side wall of the bottom of the mounting groove 402, the rotating hole 403 is communicated with the rotating sleeve 404, the rotating shaft 700 penetrates through the rotating sleeve 404, the rotating shaft 700 is threadedly connected with the rotating sleeve 404, one end of the rotating shaft 700 is, the end portion of the rotating sleeve 404 is fixedly connected with the locking portion 71, the locking portion 71 includes a locking plate 710 and a plurality of fixing nuts 711, the locking plate 710 is provided with a mounting hole, the locking plate 710 is sleeved on the rotating shaft 700 through the mounting hole, the fixing nuts 711 are sleeved on the rotating shaft 700 and are respectively arranged on two sides of the locking plate 710, the fixing nuts 711 are screwed, the locking plate 710 can be fixed on the rotating shaft 700, the rotating shaft 700 is rotated through the rotating handle 701, the locking plate 710 is abutted against the fixing carriage plate 424, the upper carriage plate 40 can be fixed with the fixing carriage plate 424, and then the rotating shaft 700 is rotated until the locking plate 710 is not in contact with the fixing carriage plate 424, so that the locking relation between the upper carriage plate 40 and the fixing carriage plate 424 can be released.

As shown in fig. 5, the rotating handle 701 includes a connecting rod 702 and a grip 703, the grip 703 is perpendicular to the connecting rod 702, so that the rotating handle 701 forms a T-shaped structure, one end of the rotating rod disposed in the mounting groove 402 is provided with an end hinged to the connecting rod 702 away from the grip 703, when the axis of the connecting rod 702 coincides with the axis of the rotating shaft 700, the rotating handle 701 can rotate the rotating shaft 700, after the rotating handle 701 is rotated and locked, the rotating handle 701 can be flattened and abutted against the bottom of the mounting groove 402, and simultaneously, the axis of the connecting rod 702 is perpendicular to the axis of the rotating shaft 700, so that the rotating handle 701 can be retracted, thereby preventing surrounding objects from mistakenly touching the rotating handle 701 when the truck is running, opening the first locking part 7, or scratching the surrounding objects, damaging the first locking part 7, and the like, and reducing the potential safety hazard. As shown in fig. 6, a locking seat 43 is disposed at the bottom of the mounting groove 402, the locking seat 43 is provided with a mounting channel 430 and a fixing opening 431, the mounting channel 430 is communicated with the rotating sleeve 404, and the axes of the mounting channel 430 and the rotating sleeve coincide, the fixing opening 431 is opened on the side wall of the locking seat 43 for clamping the connecting rod 702, and a rubber sleeve 704 is disposed on the connecting rod 702 for increasing the friction force between the connecting rod 702 and the locking seat 43.

As shown in fig. 1, the second locking portions 8 are respectively disposed on the fixed car plate 424 and the frame body 3 in pairs, and are configured to fix the lower car plate 41 on the fixed car plate 424 and the frame body 3, as shown in fig. 4, the second locking portions 8 include a connecting plate 80, a lock 81, and a lock rod 82, where the connecting plate 80 is provided with a lock hole, the connecting plate 80 is hinged to the lower car plate 41, the lock rod 82 is fixed on the fixed car plate 424 (refer to fig. 1, or the lock rod 82 is fixed on the frame body 3), the lock 81 is hinged to the fixed car plate 424 (refer to fig. 1, or the lock 81 is hinged to the frame body 3), the lock rod 82 passes through the connecting plate 80 via the lock hole, the lock 81 is hooked on the lock rod 82 for locking, and then the lower car plate.

As shown in fig. 4, the lock 81 includes a lock body 810 and a wrench 811, the lock body 810 is provided with a lock frame 812 and a lock hook 83, the lock frame 812 is hinged to the wrench 811, the wrench 811 is hinged to the fixed carriage plate 424, the lock hook 83 includes a lock ring 830, a sliding rod 831 and a sliding plate 832, sliding grooves 813 are symmetrically formed in the lock frame 812, the sliding plate 832 is arranged between the sliding grooves 813, the sliding rod 831 penetrates through the lock frame 812 and is slidably connected to the lock frame 812, one end of the sliding rod 831 is fixedly connected to the sliding plate 832, the lock ring 830 is fixedly connected to the other end of the sliding rod 831, a pressure spring 84 is arranged between the lock frame 812 and the sliding plate 832, the pressure spring 84 is sleeved on the sliding rod 831, and two ends of the pressure. The locking ring 830 is lapped on the lock rod 82, the wrench 811 is arranged below the plate, the distance between the hinged point of the wrench 811 and the lock frame 812 and the distance between the connected point of the locking ring 830 and the lock rod and the fixed carriage plate 424 are smaller than the distance between the hinged point of the lock frame 812 and the fixed carriage plate 424, meanwhile, the locking ring 830 is hooked on the lock rod, the sliding plate 832 slides in the sliding groove 813 to compress the pressure spring 84, and simultaneously, the pressure spring 84 reversely extrudes the sliding plate 832 to lock the lock 81.

The working process is as follows: when the car loading device is used, the first locking portion 71 is unlocked to drive the driving portion 30 to lift the upper car plate 40, the second locking portion 71 is unlocked, the lower car plate 41 rotates to a position below a horizontal plane where the bottom plate 5 is located, after the car loading is completed, the driving portion 30 is driven to drop the upper car plate 40, the first locking portion 71 is locked, the upper car plate 40 and the fixed car plate 424 are fixed, the lower car plate 41 is vertically aligned with the fixed car plate 424, the second locking portion 71 on the fixed car plate 424 and the second locking portion 71 on the frame body 3 are locked, the lower car plate 41 is fixed, and therefore the upper car plate 40 and the lower car plate 41 are fixed.

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

1. A wing-shaped van comprises a body (1) and a carriage (2), wherein the carriage (2) is provided with a frame body (3), carriage plates (4) and a bottom plate (5), the bottom plate (5) is fixedly connected with the body (1), the frame body (3) is fixedly arranged on the bottom plate (5), the carriage plates (4) are arranged in pairs and are respectively hinged on two sides of the frame body (3), a driving part (30) is arranged on the frame body (3), the driving part (30) is respectively hinged with the frame body (3) and the carriage (2), the wing-shaped van is characterized in that the carriage plates (4) comprise an upper carriage plate (40) and a plurality of lower carriage plates (41), the upper carriage plate (40) is hinged with the frame body (3), the lower carriage plates (41) are hinged with the body (1), fixed carriage plates (42) are arranged between the lower carriage plates (41), the fixed carriage plates (42) are fixedly connected with the bottom plate (5), and the upper carriage plate (40) and the lower carriage plates (41) are fixedly connected through a locking mechanism (6), lower carriage plate (41) and support body (3) between through locking mechanism (6) fixed connection, locking mechanism (6) are including locking portion (7) and a plurality of locking portion two (8), locking portion (7) are including rotating portion (70) and locking portion (71), rotating portion (70) and locking portion (71) fixed connection, rotating portion (70) are including axis of rotation (700) and rotation handle (701), axis of rotation (700) and rotation handle (701) rotate the connection, locking portion (71) and fixed carriage plate (42) joint.

2. The wing van according to claim 1, wherein the upper panel (40) comprises a first panel (400) and a second panel (401), the first panel (400) is vertically connected to the second panel (401), the second panel (401) is fixedly provided with a mounting groove (402), the first locking portion (7) is disposed in the mounting groove (402), rotation hole (403) have been seted up to the tank bottom of mounting groove (402), the fixed rotating sleeve (404) that sets up in lateral wall of the tank bottom of mounting groove (402), rotation hole (403) and rotating sleeve (404) intercommunication, rotation axis (700) run through rotating sleeve (404), rotation axis (700) and rotating sleeve (404) threaded connection, mounting groove (402) are arranged in to rotation axis (700) one end, outside rotating sleeve (404) was arranged in to the other end, arrange in the outer tip and locking portion (71) fixed connection of rotating sleeve (404).

3. Wing van according to claim 2, wherein the locking portion (71) comprises a locking plate (710) and a plurality of fixing nuts (711), the locking plate (710) is arranged on the rotation shaft (700), and the fixing nuts (711) are arranged on the rotation shaft (700) and are respectively arranged at two sides of the locking plate (710).

4. Wing van according to claim 1, wherein the turning handle (701) comprises a connecting rod (702) and a handle (703), the handle (703) is arranged perpendicular to the connecting rod (702) such that the turning handle (701) forms a T-shaped structure, one end of the turning shaft (700) arranged in the mounting groove (402) is hinged to one end of the connecting rod (702) facing away from the handle (703), a locking seat (43) is arranged at the bottom of the mounting groove (402), the locking seat (43) is provided with a mounting channel (430) and a fixing opening (431), and the fixing opening (431) is arranged on a side wall of the locking seat (43).

5. The wing van according to claim 4, wherein the second locking portion (8) comprises a connecting plate (80), a lock (81) and a lock rod (82), the connecting plate (80) is provided with a lock hole, the connecting plate (80) is hinged to the lower van plate (41), the lock rod (82) is fixed to the fixed van plate (42), and the lock (81) is hinged to the fixed van plate (42).

6. Wing van according to claim 5, characterised in that the lock (81) comprises a lock body (810) and a wrench (811), the lock body (810) being provided with a lock frame (812), the lock frame (812) being hinged to the wrench (811), and the wrench (811) being hinged to the fixed van plate (42).

7. The wing-shaped van according to claim 6, wherein the lock frame (812) is provided with a lock hook (83), the lock hook (83) comprises a lock ring (830), a sliding rod (831) and a sliding plate (832), the lock frame (812) is symmetrically provided with sliding grooves (813), the sliding plate (832) is arranged between the sliding grooves (813), the sliding rod (831) penetrates through the lock frame (812) and is slidably connected with the lock frame (812), one end of the sliding rod (831) is fixedly connected with the sliding plate (832), and the lock ring (830) is fixedly connected with the other end of the sliding rod (831).

8. The wing van according to claim 7, wherein a compression spring (84) is disposed between the lock frame (812) and the sliding plate (832), the compression spring (84) is sleeved on the sliding rod (831), and two ends of the compression spring (84) are respectively fixedly connected with the lock frame (812) and the sliding plate (832).