CN220241009U

CN220241009U - Sheet metal part surface treatment device

Info

Publication number: CN220241009U
Application number: CN202321199759.8U
Authority: CN
Inventors: 刘海祥
Original assignee: Xielixing Industrial Technology Jingjiang Co ltd
Current assignee: Xielixing Industrial Technology Jingjiang Co ltd
Priority date: 2023-05-18
Filing date: 2023-05-18
Publication date: 2023-12-26
Anticipated expiration: 2033-05-18

Abstract

The utility model relates to the technical field of surface treatment devices, in particular to a sheet metal part surface treatment device. Including platform subassembly, cleaning assembly, power pack, subassembly, the clamping assembly of polishing, power pack includes the headstock, the inboard of headstock is provided with motor, threaded rod, the outer lane of threaded rod is connected with the slider, the spout has been seted up to the inboard of headstock, the subassembly of polishing includes the locating piece, polishes the roller, the one end of locating piece is connected with first telescopic link, the one end that first telescopic link was kept away from to the locating piece is connected with the linkage piece, the output of first telescopic link is connected with the support of polishing, the output of second telescopic link is connected with the clamping piece. When the use height of the grinding roller is required to be adjusted, the positioning block is driven by the linkage block to synchronously move, and then the positioning block drives the first telescopic rod to synchronously move in the moving process, so that the use height of the grinding roller is adjusted.

Description

Sheet metal part surface treatment device

Technical Field

The utility model relates to the technical field of surface treatment devices, in particular to a sheet metal part surface treatment device.

Background

Sheet metal is an integrated cold working process for sheet metal (typically below 6 mm) and includes shearing, punching/cutting/compounding, folding, welding, riveting, splicing, forming (e.g., automotive body), and the like. The remarkable characteristic is that the thickness of the same part is consistent. The product processed by the sheet metal process is called a sheet metal part.

Sometimes, a large amount of rust spots are generated on the surface of the sheet metal part, so that the sheet metal part needs to be subjected to surface treatment when the sheet metal part is further processed. The prior application number is: 202221809473.2 sheet metal part surface treatment device includes: a case; the polishing mechanism is arranged on the box body and comprises two polishing rollers which are symmetrically and movably arranged in the box body; this document suffers from the following deficiencies in use: because the device enables the two threaded rods to synchronously rotate under the action of the belt pulley and the belt, the threaded rods drive the sliding blocks to move, and the sliding blocks drive the electric telescopic rods, the brackets and the polishing rollers to move, both sides of the sheet metal part can be polished at the same time; however, when the surface of the sheet metal part is asymmetric, or polishing is required to be performed on two sides of the same sheet metal part at different height positions, the polishing device cannot finish polishing work on the surface of the sheet metal part.

Disclosure of Invention

In view of the above problems, an object of the present utility model is to: the utility model provides a sheet metal component surface treatment device, when the surface asymmetry of sheet metal component, perhaps need to polish to the different high positions in same piece sheet metal component both sides, this device just can't accomplish the work of polishing to the sheet metal component surface, accomplish the back to the regulation of polishing roller use height, open the operation of first telescopic link, then first telescopic link stretches motion and drive the removal of polishing roller to the sheet metal component surface, then until polishing roller and sheet metal component surface contact, then open the operation of polishing motor and drive the polishing roller through polishing motor and be used for polishing to the sheet metal component surface, through the setting of two sets of power components and polishing assembly, can polish the work to the surface of sheet metal component both sides simultaneously, also can be used for polishing to the different high positions in same piece sheet metal component both sides simultaneously, and then the problem of the flexibility that improves the device and use.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a sheet metal component surface treatment device, includes platform subassembly, cleaning module, power pack, polishing subassembly, clamping assembly, the platform subassembly includes the platform case, the top of the bottom surface is connected with operation platform under the platform case, the inboard of operation platform has been seted up and has been placed the board, cleaning module is including cleaning the case, the top of cleaning the case is connected with the inlet tube, the lower extreme of cleaning the case is connected with the shower head, power pack includes the power case, the inboard of power case is provided with power motor, threaded rod, the outer lane of threaded rod is connected with the slider, the spout has been seted up to the inboard of power case, polishing subassembly includes the locating piece, polishes the roller, the one end of locating piece is connected with first telescopic link, the one end that first telescopic link was kept away from to the locating piece is connected with the linkage piece, the output of first telescopic link is connected with the support of polishing, the one end of support is connected with the motor of polishing, the clamping assembly includes the second telescopic link, the output of second telescopic link is connected with the clamping block.

The beneficial effects of the utility model are as follows: after the adjustment of the use height of the polishing roller is completed, the operation of the first telescopic rod is started, then the first telescopic rod stretches to move and drives the polishing roller to move towards the surface of the sheet metal part, then the polishing roller is contacted with the surface of the sheet metal part until the polishing roller is started, then the operation of the polishing motor is started, the polishing roller is driven to polish the surface of the sheet metal part through the polishing motor, the surfaces on two sides of the sheet metal part can be polished simultaneously through the arrangement of the two groups of power assemblies and the polishing assembly, meanwhile, the polishing operation can be performed on the surfaces on two sides of the same sheet metal part, the polishing of different height positions on the two sides of the same sheet metal part can be performed, the use flexibility of the device is improved, when the surface of the sheet metal part and the inner wall of the device are required to be cleaned, water flows into the cleaning box through the water inlet pipe after the external water source is opened, then the water in the cleaning box is sprayed out through the spray header and is used for cleaning the surface of the sheet metal part and the inner wall of the device, then the water flows into the bottom of the operation platform through the grid net, meanwhile the filter screen is used for filtering the water body in the process, and the filtered water is discharged through the drain pipe.

The water body to be cleaned flows into the operation platform through the grid mesh to be filtered:

as a further improvement of the above technical scheme: the lower extreme of platform case is connected with the support frame, the front end of platform case is connected with transparent chamber door through the hinge rotation, the junction of platform case and chamber door is provided with the sealing washer, operating platform's upper portion opening sets up, place the both ends symmetry of board and be connected with the grid net.

The beneficial effects of this improvement are: when the device is used, the box door is opened, the sheet metal part is stably placed on the placing plate, then the sheet metal part is clamped and fixed, and when the surface of the sheet metal part is cleaned, the cleaned water flows into the operation platform through the grid mesh to be filtered.

In order to clean the water body in the case and spray out by the shower head and be used for cleaning sheet metal component surface, device inner wall:

as a further improvement of the above technical scheme: the lower extreme of platform case is connected with the drain pipe, the one end of wasing the case is connected with external water source, the top of shower head is linked together with the inlet tube through the pipeline, the drain pipe is connected with the valve, the top of drain pipe runs through the wall body of platform case, operation platform and is linked together with operation platform's inboard, operation platform's inboard is provided with the filter screen.

The beneficial effects of this improvement are: when the surface of the sheet metal part and the inner wall of the device are required to be cleaned, water flows into the cleaning box from the water inlet pipe after the external water source is opened, then the water in the cleaning box is sprayed out from the spray header and is used for cleaning the surface of the sheet metal part and the inner wall of the device, then the water flows into the bottom of the operation platform from the grid net, meanwhile, the filter screen is used for filtering the water in the process, and then the filtered water is discharged from the drain pipe.

In order to drive the synchronous rotation of the threaded rod in the rotating process of the connecting shaft:

as a further improvement of the above technical scheme: the power assembly is provided with two groups altogether, two groups the power assembly symmetry is installed in the inner wall of platform case, power motor and operating panel electric connection, the inner wall of power case is connected with the baffle, power motor's output is connected with the shaft coupling, the one end that the power motor output was kept away from to the shaft coupling is connected with the connecting axle, the one end that the shaft coupling was kept away from runs through the baffle and extends to be connected with the threaded rod.

The beneficial effects of this improvement are: when polishing the sheet metal part surface, starting the running of the power motor, then operating the power motor and driving the synchronous rotation of the connecting shaft through the coupler, and then driving the synchronous rotation of the threaded rod by the connecting shaft in the rotating process.

In order to drive the movement of the grinding assembly by the linear movement of the slide:

as a further improvement of the above technical scheme: the inner ring of slider is connected with the gag lever post, the one end that the threaded rod kept away from the connecting axle passes through the connecting piece and rotates with the inner wall of platform subassembly and be connected.

The beneficial effects of this improvement are: when the threaded rod rotates under the drive of the power motor, the sliding block moves linearly under the combined action of the threaded rod and the limiting rod, and then the polishing assembly is driven to move through the linear motion of the sliding block.

To achieve the adjustment of the height of use of the grinding roller:

as a further improvement of the above technical scheme: the polishing assembly is provided with two groups, the size of the linkage block is matched with the size of the sliding groove, and one end of the linkage block, which is far away from the positioning block, penetrates through the sliding groove and extends to be connected with the sliding block.

The beneficial effects of this improvement are: when the use height of the grinding roller is required to be adjusted, the positioning block is driven by the linkage block to synchronously move, and then the positioning block drives the first telescopic rod to synchronously move in the moving process, so that the use height of the grinding roller is adjusted.

In order to be able to be used for polishing of different height positions on both sides of the same sheet metal part:

as a further improvement of the above technical scheme: the overlook cross section of the polishing support is U-shaped, the polishing roller is rotationally connected with the polishing support through a connecting piece, the output end of the polishing motor is connected with the polishing roller, and the first telescopic rod, the polishing motor and the operation panel are electrically connected.

The beneficial effects of this improvement are: after the adjustment of the use height of the polishing roller is completed, the operation of the first telescopic rod is started, then the first telescopic rod stretches and moves to drive the polishing roller to move towards the surface of the sheet metal part, then the polishing roller is contacted with the surface of the sheet metal part until the polishing roller contacts with the surface of the sheet metal part, then the operation of the polishing motor is started, the polishing roller is driven to polish the surface of the sheet metal part through the polishing motor, the surfaces of two sides of the sheet metal part can be polished simultaneously through the arrangement of the two groups of power assemblies and the polishing assembly, and meanwhile, the polishing device can also be used for polishing positions of different heights on two sides of the same sheet metal part, so that the use flexibility of the device is improved.

In order to realize clamping and fixing of the sheet metal part:

as a further improvement of the above technical scheme: the clamping assembly is provided with two groups altogether, the one end that the second telescopic link was kept away from to the grip block is connected with the protection bed course, second telescopic link and operating panel electric connection, the one end that the grip block was kept away from to the second telescopic link is connected with the inner wall of platform case, the protection bed course is the rubber bed course of rectangle structure.

The beneficial effects of this improvement are: when placing the sheet metal component steadily above placing the board, through the operation of second telescopic link, then the grip block removes to the sheet metal component gradually under the promotion of second telescopic link, then until protection bed course and sheet metal component surface contact laminating, and then realize the centre gripping to the sheet metal component fixed.

Drawings

Fig. 1 is a schematic diagram of a front view structure of the present utility model.

Fig. 2 is a schematic perspective view of an operation platform according to the present utility model.

Fig. 3 is an enlarged schematic view of the structure at a in fig. 2.

FIG. 4 is a schematic cross-sectional view of the purge bin of the present utility model.

Fig. 5 is a schematic perspective view of a sanding assembly in accordance with the present utility model.

FIG. 6 is a schematic cross-sectional view of the operating platform of the present utility model.

In the figure: 1. a platform assembly; 11. a platform box; 12. a support frame; 13. an operating platform; 14. placing a plate; 15. a grid mesh; 16. a filter screen; 17. a drain pipe; 2. cleaning the assembly; 21. a cleaning box; 22. a water inlet pipe; 23. a spray header; 3. a power assembly; 31. a power box; 32. a power motor; 33. a coupling; 34. a connecting shaft; 35. a partition plate; 36. a threaded rod; 37. a slide block; 38. a limit rod; 39. a chute; 4. a polishing assembly; 41. a positioning block; 42. a first telescopic rod; 43. a linkage block; 44. polishing the bracket; 45. a grinding roller; 46. polishing a motor; 5. a clamping assembly; 51. a second telescopic rod; 52. a clamping block; 53. and a protective cushion layer.

Detailed Description

In order that those skilled in the art may better understand the technical solutions of the present utility model, the following detailed description of the present utility model with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present utility model.

As shown in fig. 1-6, a sheet metal part surface treatment device comprises a platform assembly 1, a cleaning assembly 2, a power assembly 3, a polishing assembly 4 and a clamping assembly 5, wherein the platform assembly 1 comprises a platform box 11, the top of the lower bottom surface of the platform box 11 is connected with an operation platform 13, a placing plate 14 is arranged on the inner side of the operation platform 13, the cleaning assembly 2 comprises a cleaning box 21, the top of the cleaning box 21 is connected with a water inlet pipe 22, the lower end of the cleaning box 21 is connected with a spray head 23, the power assembly 3 comprises a power box 31, the inner side of the power box 31 is provided with a power motor 32 and a threaded rod 36, the outer ring of the threaded rod 36 is connected with a sliding block 37, the inner side of the power box 31 is provided with a sliding groove 39, the polishing assembly 4 comprises a positioning block 41 and a polishing roller 45, one end of the positioning block 41 is connected with a first telescopic rod 42, one end of the positioning block 41 far away from the first telescopic rod 42 is connected with a linkage block 43, the output end of the first telescopic rod 42 is connected with a polishing bracket 44, one end of the polishing motor bracket 44 is connected with one end of the polishing bracket 46, one end of the polishing bracket 46 is connected with a sealing ring 11, two ends of the sealing ring 11 are connected with the two ends of the platform 11, two ends of the sealing ring 11 are connected with the platform 11, and the sealing ring 11 is provided with two ends of a transparent support frame 11, and the sealing ring 11 is provided with a sealing ring, and the sealing ring is provided with a sealing ring; when the device is used, a box door is opened, a sheet metal part is stably placed on the placing plate 14, then the sheet metal part is clamped and fixed, when the surface of the sheet metal part is cleaned, the cleaned water flows into the operation platform 13 through the grid mesh 15 for filtering treatment, the lower end of the platform box 11 is connected with a drain pipe 17, one end of the cleaning box 21 is connected with an external water source, the top of the spray header 23 is communicated with the water inlet pipe 22 through a pipeline, the drain pipe 17 is connected with a valve, the top of the drain pipe 17 penetrates through the platform box 11 and the wall body of the operation platform 13 and is communicated with the inner side of the operation platform 13, and a filter screen 16 is arranged on the inner side of the operation platform 13; when the surface of a sheet metal part and the inner wall of a device are required to be cleaned, water flows into the cleaning box 21 through the water inlet pipe 22 after an external water source is opened, then the water in the cleaning box 21 is sprayed out through the spray header 23 and used for cleaning the surface of the sheet metal part and the inner wall of the device, then the water flows into the bottom of the operation platform 13 through the grid net 15, meanwhile, the filter screen 16 is used for filtering the water in the process, and then the filtered water is discharged out of the device through the drain pipe 17, the power assembly 3 is provided with two groups, the two groups of power assemblies 3 are symmetrically arranged on the inner wall of the platform box 11, the power motor 32 is electrically connected with the operation panel, the inner wall of the power box 31 is connected with the partition 35, the output end of the power motor 32 is connected with the coupling 33, one end of the coupling 33 far away from the output end of the power motor 32 is connected with the connecting shaft 34, and one end of the connecting shaft 34 far away from the coupling 33 penetrates the partition 35 and extends to be connected with the threaded rod 36; when the surface of the sheet metal part is polished, the running of the power motor 32 is started, then the power motor 32 works and drives the connecting shaft 34 to synchronously rotate through the coupler 33, then the connecting shaft 34 drives the threaded rod 36 to synchronously rotate in the rotating process, the inner ring of the sliding block 37 is connected with the limiting rod 38, and one end of the threaded rod 36 far away from the connecting shaft 34 is rotationally connected with the inner wall of the platform assembly 1 through a connecting piece; when the threaded rod 36 is driven by the power motor 32 to rotate, the sliding block 37 moves linearly under the combined action of the threaded rod 36 and the limiting rod 38, and then the linear movement of the sliding block 37 drives the polishing assembly 4 to move, the polishing assembly 4 is provided with two groups, the size of the linkage block 43 is matched with that of the sliding groove 39, and one end of the linkage block 43 away from the positioning block 41 penetrates through the sliding groove 39 and extends to be connected with the sliding block 37; when the use height of the polishing roller 45 needs to be adjusted, the positioning block 41 is driven by the linkage block 43 to synchronously move, then the positioning block 41 drives the first telescopic rod 42 to synchronously move in the moving process, so that the use height of the polishing roller 45 is adjusted, the overlooking cross section of the polishing bracket 44 is in a U-shaped structure, the polishing roller 45 is rotationally connected with the polishing bracket 44 through a connecting piece, the output end of the polishing motor 46 is connected with the polishing roller 45, and the first telescopic rod 42, the polishing motor 46 and an operation panel are electrically connected; after the height of the polishing roller 45 is adjusted, the first telescopic rod 42 is started to operate, then the first telescopic rod 42 stretches to move and drive the polishing roller 45 to move towards the surface of the sheet metal part, then the polishing roller 45 is contacted with the surface of the sheet metal part, then the operation of the polishing motor 46 is started, the polishing roller 45 is driven by the polishing motor 46 to polish the surface of the sheet metal part, the surfaces on two sides of the sheet metal part can be polished simultaneously through the arrangement of the two groups of power assemblies 3 and the polishing assemblies 4, and simultaneously the surfaces on two sides of the sheet metal part can be polished at different heights of the same sheet metal part, so that the flexibility of the device is improved, two groups of clamping assemblies 5 are arranged, one end, far away from the second telescopic rod 51, of the clamping block 52 is connected with the protection cushion layer 53, one end, far away from the clamping block 52, of the second telescopic rod 51 is connected with the inner wall of the platform box 11, and the protection cushion layer 53 is a rubber cushion layer with a rectangular structure; when the sheet metal part is stably placed on the placing plate 14, the second telescopic rod 51 moves, the clamping block 52 gradually moves towards the sheet metal part under the pushing of the second telescopic rod 51, and then the protective cushion layer 53 is contacted and attached with the surface of the sheet metal part, so that the sheet metal part is clamped and fixed.

The working principle of the utility model is as follows: when the device is used, the box door is opened, the sheet metal part is stably placed on the placing plate 14, the sheet metal part is moved by the operation of the second telescopic rod 51, then the clamping block 52 gradually moves towards the sheet metal part under the pushing of the second telescopic rod 51, then the first telescopic rod 42 is driven by the positioning block 41 to move synchronously in the moving process, further the clamping fixation of the sheet metal part is realized, when the height of the polishing roller 45 is required to be adjusted, the operation of the power motor 32 is started, then the power motor 32 works and drives the connecting shaft 34 to synchronously rotate through the coupling 33, then the connecting shaft 34 drives the threaded rod 36 to synchronously rotate in the rotating process, when the threaded rod 36 rotates under the driving of the power motor 32, the sliding block 37 moves linearly under the combined action of the threaded rod 36 and the limiting rod 38, the positioning block 41 drives the first telescopic rod 42 to synchronously move under the driving of the linkage block 43, and then the polishing roller 45 is driven by the positioning block 41 to finish the height adjustment of the polishing roller 45, the operation of the first telescopic rod 42 is started, then the first telescopic rod 42 is driven to move, the first telescopic rod 42 is driven to move synchronously when the first telescopic rod 45 is required to finish the height adjustment, the polishing roller 45 is driven by the polishing roller 45, the polishing roller 45 is driven by the first telescopic rod 45 to synchronously moves to move to the inner wall of the sheet metal part, and then the sheet metal part is driven by the metal part, and the surface is contacted with the surface of the sheet metal part, and the sheet metal part is simultaneously cleaned, and the surface is contacted with the surface of the sheet metal part is cleaned by the surface of the surface 45, and the sheet metal part is simultaneously and the surface is contacted with the surface of the surface to be cleaned by the sheet metal part, and the surface is stretched, after the external water source is opened, water flows into the cleaning box 21 through the water inlet pipe 22, then the water in the cleaning box 21 is sprayed out through the spray header 23 and is used for cleaning the surface of the sheet metal part and the inner wall of the device, then the water flows into the bottom of the operation platform 13 through the grid net 15, meanwhile, the filter screen 16 is used for filtering the water in the process, and then the filtered water is discharged out of the device through the drain pipe 17.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present utility model and its core ideas. The foregoing is merely illustrative of the preferred embodiments of the utility model, and it is noted that there is virtually no limit to the specific structure which may be imposed by those skilled in the art without departing from the spirit of the utility model, and that modifications, adaptations, or variations of the foregoing features may be combined in a suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present utility model.

Claims

1. Sheet metal part surface treatment device, including platform subassembly (1), cleaning module (2), power component (3), polishing module (4), clamping assembly (5), platform subassembly (1) include platform case (11), its characterized in that: the utility model provides a cleaning device for a car, includes platform (11), platform (11) bottom surface, platform (13) are connected with operation platform (13), place board (14) have been seted up to the inboard of operation platform (13), cleaning device (2) are including cleaning case (21), the top of cleaning case (21) is connected with inlet tube (22), the lower extreme of cleaning case (21) is connected with shower head (23), power pack (3) include power case (31), the inboard of power case (31) is provided with power motor (32), threaded rod (36), the outer lane of threaded rod (36) is connected with slider (37), spout (39) have been seted up to the inboard of power case (31), polishing subassembly (4) are including locating piece (41), grinding roller (45), the one end of locating piece (41) is connected with first telescopic link (42), the one end that locating piece (41) kept away from first telescopic link (42) is connected with shower head (23), the output of first telescopic link (42) is connected with support (44), the one end of polishing support (44) is connected with slider (37), the one end of polishing support (46) is connected with clamping piece (51), second telescopic link (51) including clamping piece (51).

2. The sheet metal part surface treatment device according to claim 1, wherein: the lower extreme of platform case (11) is connected with support frame (12), the front end of platform case (11) is connected with transparent chamber door through the hinge rotation, the junction of platform case (11) and chamber door is provided with the sealing washer, the upper portion opening setting of operation platform (13), the both ends symmetry of placing board (14) are connected with grid net (15).

3. The sheet metal part surface treatment device according to claim 1, wherein: the utility model discloses a water-saving shower device, including platform case (11), shower head (23), operation platform (13), shower head (23), drain pipe (17), shower head (23), shower head (13), shower head (11), shower head (13), shower head (23), shower head (17) lower extreme is connected with drain pipe (17), the one end of wasing case (21) is connected with external water source, the top of drain pipe (17) is connected with the valve, the top of drain pipe (17) runs through the wall of platform case (11), operation platform (13) and is linked together with the inboard of operation platform (13), the inboard of operation platform (13) is provided with filter screen (16).

4. The sheet metal part surface treatment device according to claim 1, wherein: the power assembly (3) is provided with two groups altogether, two groups power assembly (3) symmetry installs in the inner wall of platform case (11), power motor (32) and operating panel electric connection, the inner wall of power case (31) is connected with baffle (35), the output of power motor (32) is connected with shaft coupling (33), the one end that power motor (32) output was kept away from to shaft coupling (33) is connected with connecting axle (34), the one end that shaft coupling (33) was kept away from to connecting axle (34) runs through baffle (35) and extends to be connected with threaded rod (36).

5. The sheet metal part surface treatment device according to claim 1, wherein: the inner ring of the sliding block (37) is connected with a limiting rod (38), and one end of the threaded rod (36) far away from the connecting shaft (34) is rotatably connected with the inner wall of the platform assembly (1) through a connecting piece.

6. The sheet metal part surface treatment device according to claim 1, wherein: the polishing assembly (4) is provided with two groups, the size of the linkage block (43) is matched with the size of the sliding groove (39), and one end, away from the positioning block (41), of the linkage block (43) penetrates through the sliding groove (39) and extends to be connected with the sliding block (37).

7. The sheet metal part surface treatment device according to claim 1, wherein: the overlook cross section of support (44) of polishing is U type structure setting, roller (45) of polishing rotates through connecting piece and support (44) of polishing to be connected, the output of motor (46) of polishing is connected with roller (45) of polishing, first telescopic link (42), motor (46) of polishing and operating panel electric connection.

8. The sheet metal part surface treatment device according to claim 1, wherein: the clamping assembly (5) is provided with two groups altogether, one end of the clamping block (52) away from the second telescopic rod (51) is connected with a protection cushion layer (53), the second telescopic rod (51) is electrically connected with an operation panel, one end of the second telescopic rod (51) away from the clamping block (52) is connected with the inner wall of the platform box (11), and the protection cushion layer (53) is a rubber cushion layer with a rectangular structure.