A polishing device for a vehicle body exterior trim part with a quick release structure

Abstract

The utility model discloses a kind of car body outer trim polishing device with quick release structure, belong to automobile polishing field, including bottom plate, wear-resistant component and clamping component component, wear-resistant component and clamping component component are installed on bottom plate, clamping component component is used to clamp car body outer trim;Wear-resistant component includes support, wear-resistant piece and quick-change mechanism, support is detachably connected with bottom plate, wear-resistant piece is installed on support;Quick-change mechanism includes handle, cam piece, connecting shaft, pressing plate, spring and first nut, handle and cam piece are connected, first perforation is equipped on pressing plate, second perforation is equipped on bottom plate, the first end of connecting shaft is rotatably connected with cam piece, the second end of connecting shaft sequentially passes through first perforation and second perforation and is threadedly connected with first nut, spring is sleeved on the outside of connecting shaft and between pressing plate and bottom plate, support is pressed between pressing plate and bottom plate, to improve the convenience when wear-resistant component disassembly replacement.

Description

Technical Field

[0001] This utility model belongs to the field of automotive polishing technology, specifically relating to a polishing device for automotive exterior trim parts with a quick-release structure. Background Technology

[0002] Exterior trim pieces are functional and decorative components installed on the exterior of a vehicle, including decorative parts such as the hood, door panels, trunk lid, and roof. Typically, exterior trim pieces require sanding and polishing to improve their appearance and extend their lifespan.

[0003] Currently, common polishing devices for vehicle exterior parts include a mounting plate, a wear-resistant component, and a clamping assembly. Both the wear-resistant component and the clamping assembly are fixed to the mounting plate. The clamping assembly is used to clamp the exterior parts, and the wear-resistant component works with a polishing wheel to perform friction polishing. The wear-resistant component is secured to the mounting plate with multiple bolts. This structure, using the clamping assembly to clamp the exterior parts and the wear-resistant component to polish them, achieves the desired polishing effect. However, the wear-resistant component in this polishing device is inconvenient to disassemble and replace. Utility Model Content

[0004] To address the aforementioned problems in the existing technology, this utility model provides a vehicle exterior trim polishing device with a quick-release structure. The technical problem to be solved by this utility model is achieved through the following technical solution:

[0005] In a first aspect, this utility model provides a vehicle body exterior polishing device with a quick-release structure, including a base plate, a wear-resistant component and a clamping body component. The wear-resistant component and the clamping body component are both mounted on the base plate, and the clamping body component is used to clamp the vehicle body exterior component.

[0006] The wear-resistant component includes a support, wear-resistant parts, and a quick-change mechanism. The support is detachably connected to the base plate, and the wear-resistant parts are installed on the support.

[0007] The quick-change mechanism includes a handle, a cam component, a connecting shaft, a pressure plate, a spring, and a first nut. The handle is connected to the cam component. The pressure plate has a first through hole, and the base plate has a second through hole. The first end of the connecting shaft is rotatably connected to the cam component. The second end of the connecting shaft passes through the first and second through holes in sequence and extends out and is threadedly connected to the first nut. The spring is sleeved outside the connecting shaft and is located between the pressure plate and the base plate. The support component is pressed between the pressure plate and the base plate.

[0008] In one embodiment of the present invention, the quick-change mechanism further includes a rotating shaft, and the cam component includes a left side plate, a middle plate and a right side plate, which are connected in sequence to form a U-shaped structure;

[0009] The handle is connected to the middle plate, the upper end of the connecting shaft is connected to the rotating shaft, the left side plate has a first rotating hole, the right side plate has a second rotating hole, and the two ends of the rotating shaft are respectively inserted into the first rotating hole and the second rotating hole;

[0010] Both the left and right side plates are cam structures.

[0011] In one embodiment of the present invention, the quick-change mechanism further includes a support pin and a second nut. The base plate is also provided with a first threaded hole. The lower surface of the pressure plate is provided with a limiting groove. The upper end of the support pin is located in the limiting groove. The lower end of the support pin is threadedly connected to the first threaded hole. The lower end of the support pin extends through the first threaded hole and is threadedly connected to the second nut.

[0012] In one embodiment of the present invention, the quick-change mechanism further includes a locking pin. The front surface of the pressure plate is provided with a second threaded hole, which is connected to the limiting groove. The locking pin is threaded into the second threaded hole, and one end of the locking pin abuts against the upper part of the support pin.

[0013] In one embodiment of the present invention, a first washer and a second washer are also sleeved on the connecting shaft. The first washer is located between the cam and the pressure plate, and the second washer is located between the spring and the pressure plate.

[0014] In one embodiment of this utility model, the first perforation is an elongated hole provided along the length direction of the pressure plate.

[0015] In one embodiment of the present invention, the quick-change mechanism further includes a quick-change pin, and a third through hole is provided on the base plate. The bottom surface of the support member is provided with a pin hole, and the upper end of the quick-change pin passes through the third through hole and extends into the pin hole.

[0016] In one embodiment of this utility model, a positioning groove is provided on the base plate, a support member is installed in the positioning groove, and a positioning protrusion is provided on the lower surface of the support member, the positioning protrusion abuts against the front surface of the base plate.

[0017] In one embodiment of this utility model, two support members are provided, which are symmetrically arranged on both sides of the base plate. The wear-resistant part is connected to both support members at the same time. Two quick-change mechanisms are provided, which are used to press the two support members respectively.

[0018] In one embodiment of this utility model, the clamping body assembly includes a support base, clamps, a screw, a slider, a sliding strip, a spring, and a fixing strip. Multiple support bases are provided and are sequentially installed on the base plate along its length. The fixing strip is installed on the support base, and a groove is provided between the fixing strip and the support base. The sliding strip is installed within the groove, and the spring is installed on the sliding strip. The slider is connected to the sliding strip, and the screw is threadedly connected to the slider. The clamps are installed on the support base, and the screw is connected to the clamps.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] In the above-described solution of this application, the vehicle exterior polishing device includes a base plate, a wear-resistant component, and a clamping assembly. Both the wear-resistant component and the clamping assembly are mounted on the base plate, and the clamping assembly is used to clamp the vehicle exterior parts. The wear-resistant component includes a support member, a wear-resistant component, and a quick-change mechanism. The support member is detachably connected to the base plate, and the wear-resistant component is mounted on the support member. The quick-change mechanism includes a handle, a cam member, a connecting shaft, a pressure plate, a spring, and a first nut. The handle is connected to the cam member. The pressure plate has a first through hole, and the base plate has a second through hole. The first end of the connecting shaft is rotatably connected to the cam member, and the second end of the connecting shaft passes through the first and second through holes sequentially and extends out, threadedly connected to the first nut. The spring is sleeved outside the connecting shaft and located between the pressure plate and the base plate. The support member is pressed between the pressure plate and the base plate. Using this structure, the vehicle exterior parts are clamped by the clamping assembly, and polished by the wear-resistant component, thus achieving the polishing process for the vehicle exterior parts. During installation of the wear-resistant component, the cam can be rotated forward using the handle. This forward rotation applies downward pressure to the pressure plate and, via the connecting shaft, drives the first nut to apply upward pressure to the base plate, clamping the support component between the pressure plate and the base plate. For disassembly and replacement of the wear-resistant component, the cam can be rotated backward using the handle. This reverse rotation releases the pressure plate and base plate, allowing the support component to detach from them. Thus, the quick-change mechanism enables rapid disassembly and replacement of the wear-resistant component, making the process more convenient.

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the base plate and wear-resistant components in an embodiment of this utility model. Figure 1 ;

[0023] Figure 2 This is a schematic diagram of the base plate and wear-resistant components in an embodiment of this utility model. Figure 2 ;

[0024] Figure 3 This is an exploded view of the wear-resistant component in an embodiment of this utility model;

[0025] Figure 4 This is a schematic diagram of the handle and cam component in an embodiment of this utility model;

[0026] Figure 5 This is a schematic diagram of the specific components in the embodiments of this utility model. Figure 1 ;

[0027] Figure 6This is a schematic diagram of the specific components in the embodiments of this utility model. Figure 2 ;

[0028] Figure 7 This is an exploded view of the specific components in an embodiment of this utility model.

[0029] Reference numerals: 1-Base plate, 2-Wear-resistant component, 21-Support component, 22-Quick change mechanism, 221-Handle, 222-Cam component, 223-Connecting shaft, 224-Pressure plate, 225-Spring, 226-First nut, 227-Support pin, 228-Second nut, 229-Locking pin, 3-Clamping body component, 31-Support base, 32-Clamping clamp, 33-Screw, 34-Slider, 35-Sliding bar, 36-Spring piece, 37-Fixing bar, 4-First washer, 5-Second washer, 6-Quick change pin, 7-Positioning groove. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments, but the implementation of the present invention is not limited thereto.

[0031] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 This utility model provides a vehicle exterior polishing device with a quick-release structure, including a base plate 1, a wear-resistant component 2, and a clamping body component 3. Both the wear-resistant component 2 and the clamping body component 3 are mounted on the base plate 1. The clamping body component 3 is used to clamp the vehicle exterior components. The wear-resistant component 2 includes a support member 21, a wear-resistant part, and a quick-change mechanism 22. The support member 21 is detachably connected to the base plate 1, and the wear-resistant part is mounted on the support member 21. The quick-change mechanism 22 includes a handle 221, a cam member 222, a connecting shaft 223, and a pressure plate. 224, spring 225 and first nut 226, handle 221 and cam 222 are connected, pressure plate 224 is provided with first through hole, base plate 1 is provided with second through hole, first end of connecting shaft 223 is rotatably connected to cam 222, second end of connecting shaft 223 passes through first through hole and second through hole in sequence and extends out and is threadedly connected to first nut 226, spring 225 is sleeved outside connecting shaft 223 and located between pressure plate 224 and base plate 1, support member 21 is pressed between pressure plate 224 and base plate 1.

[0032] In some embodiments of this application, the wear-resistant component 2 can align the two ends of the exterior trim piece to be polished to a suitable height based on its position on the polishing fixture, while simultaneously supporting the downward vertical pressure of the polishing wheel during operation. Therefore, the wear-resistant component 2 needs to be securely and reliably installed, and its load-bearing capacity must be at least 1.5 times higher than the polishing pressure. The wear-resistant component can be made of glass or ceramic. The surface of the associated component needs to be roughened to increase its roughness. Furthermore, the installation and fixing of the wear-resistant component requires a two-component special adhesive and a special fixture. The fixture structure must meet the requirements of limiting position, preventing adhesion, and being lightweight and easy to operate.

[0033] In some embodiments of this application, the wear-resistant part and the support 21 can be connected by screws, and the support 21 and the base plate 1 can be connected by screws.

[0034] In the above-described solution of this application, the vehicle exterior polishing device includes a base plate 1, a wear-resistant component 2, and a clamping body component 3. Both the wear-resistant component 2 and the clamping body component 3 are mounted on the base plate 1, and the clamping body component 3 is used to clamp the vehicle exterior components. The wear-resistant component 2 includes a support member 21, a wear-resistant component, and a quick-change mechanism 22. The support member 21 is detachably connected to the base plate 1, and the wear-resistant component is mounted on the support member 21. The quick-change mechanism 22 includes a handle 221, a cam member 222, a connecting shaft 223, a pressure plate 224, and a spring. The first nut 226 and handle 221 are connected to the cam 222. The pressure plate 224 has a first through hole, and the base plate 1 has a second through hole. The first end of the connecting shaft 223 is rotatably connected to the cam 222. The second end of the connecting shaft 223 passes through the first and second through holes and extends out and is threadedly connected to the first nut 226. The spring 225 is sleeved on the outside of the connecting shaft 223 and is located between the pressure plate 224 and the base plate 1. The support member 21 is pressed between the pressure plate 224 and the base plate 1. With this structure, the exterior trim of the vehicle body is clamped by the clamping body assembly 3, and the exterior trim of the vehicle body is polished by the wear-resistant assembly 2, thus achieving the polishing treatment of the exterior trim of the vehicle body. When installing the wear-resistant component 2, the cam 222 can be rotated forward using the handle 221. When the cam 222 rotates forward, it applies downward pressure to the pressure plate 224. Simultaneously, the cam 222, through the connecting shaft 223, drives the first nut 226 to apply upward pressure to the base plate 1, allowing the support member 21 to be clamped between the pressure plate 224 and the base plate 1. When disassembling or replacing the wear-resistant component 2, the cam 222 can be rotated in the reverse direction using the handle 221. When the cam 222 rotates in the reverse direction, the pressure plate 224 and the base plate 1 can be released, allowing the support member 21 to detach from between them. Thus, the quick-change mechanism 22 enables rapid disassembly and replacement of the wear-resistant component 2, making the process more convenient.

[0035] In some embodiments of this application, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the quick-change mechanism 22 also includes a rotating shaft. The cam component 222 includes a left side plate, a middle plate, and a right side plate, which are connected sequentially to form a U-shaped structure. The handle 221 is connected to the middle plate, and the upper end of the connecting shaft 223 is connected to the rotating shaft. The left side plate has a first rotating hole, and the right side plate has a second rotating hole. The two ends of the rotating shaft are respectively inserted into the first rotating hole and the second rotating hole. Both the left side plate and the right side plate are cam structures. With this structure, when the handle 221 operates the cam component 222 to rotate, the left side plate and the right side plate can apply downward pressure to the pressure plate 224 or release the pressure plate 224, making it more convenient to disassemble and replace the wear-resistant component 2.

[0036] In some embodiments of this application, the upper surfaces of the left and right side plates are both planes, the front surfaces are connected to both sides of the middle plate, and the lower surfaces are arc-shaped surfaces, which are surfaces with gradually changing radii of curvature, such as elliptical surfaces.

[0037] In some embodiments of this application, the left side plate, the middle plate, the right side plate, and the handle 221 are an integral structure.

[0038] In some embodiments of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the quick-change mechanism 22 also includes a support pin 227 and a second nut 228. The base plate 1 also has a first threaded hole, and the lower surface of the pressure plate 224 has a limiting groove. The upper end of the support pin 227 is located within the limiting groove, and the lower end of the support pin 227 is threadedly connected to the first threaded hole. The lower end of the support pin 227 extends through the first threaded hole and is threadedly connected to the second nut 228. With this structure, the second nut 228 can lock the support pin 227 onto the base plate 1, and the support pin 227 can support the pressure plate 224, improving its stability. Furthermore, the upper end of the support pin 227 and the limiting groove provide a limiting fit, preventing the pressure plate 224 from shifting and further improving its stability.

[0039] In some embodiments of this application, such as Figure 1 , Figure 2 and Figure 3 As shown, the upper end of the support nail 227 is provided with a support nut, which abuts against the lower surface of the pressure plate 224 to support the pressure plate 224.

[0040] In some embodiments of this application, the quick-change mechanism 22 further includes a locking pin 229. The front surface of the pressure plate 224 is provided with a second threaded hole, which communicates with a limiting groove. The locking pin 229 is threaded into the second threaded hole, and one end of the locking pin 229 abuts against the upper part of the support pin 227. With this structure, when the locking pin 229 is screwed into the second threaded hole, it can apply pressure to the upper part of the support pin 227, allowing the upper end of the support pin 227 to be pressed tightly into the limiting groove, thereby further improving the stability of the quick-change mechanism 22.

[0041] In some embodiments of this application, such as Figure 3 As shown, a first washer 4 and a second washer 5 are also fitted onto the connecting shaft 223. The first washer 4 is located between the cam member 222 and the pressure plate 224, and the second washer 5 is located between the spring 225 and the pressure plate 224. With this structure, the first washer 4 between the cam member 222 and the pressure plate 224 improves the stability of the cam member 222 when pressing the pressure plate 224, and the second washer 5 between the spring 225 and the pressure plate 224 improves the reliability of the spring 225 during installation.

[0042] In some embodiments of this application, the first perforation is an elongated hole provided along the length of the pressure plate 224. With this structure, the pressure plate 224 can be moved relative to the connecting shaft 223, thereby adjusting the pressing position of the pressure plate 224, so that the quick-change mechanism 22 can be adapted to support members 21 of different sizes.

[0043] In some embodiments of this application, such as Figure 2 and Figure 3 As shown, the quick-change mechanism 22 also includes a quick-change pin 6, and the base plate 1 is provided with a third through hole. The bottom surface of the support member 21 is provided with a pin hole, and the upper end of the quick-change pin 6 passes through the third through hole and extends into the pin hole. This structure can improve the stability of the support member 21 during installation, and at the same time, it makes it more convenient to replace the support member 21.

[0044] In some embodiments of this application, the quick-change pin 6 is a commonly used quick-change pin.

[0045] In some embodiments of this application, the base plate 1 is provided with a positioning groove 7, the support member 21 is installed in the positioning groove 7, and the lower surface of the support member 21 is provided with a positioning protrusion, which abuts against the front surface of the base plate 1. This structure makes the support member 21 more stable during installation.

[0046] In some embodiments of this application, two supports are provided, with the two supports 21 symmetrically arranged on both sides of the base plate 1. The wear-resistant part is connected to both supports 21 simultaneously. Two quick-change mechanisms 22 are provided, each used to press the two supports 21 together. This structure improves the reliability of the wear-resistant part during installation.

[0047] In some embodiments of this application, such as Figure 4 , Figure 5 and Figure 6 As shown, the clamping body assembly 3 includes a support base 31, a clamp 32, a screw 33, a slider 34, a sliding bar 35, a spring piece 36, and a fixing bar 37. Multiple support bases 31 are provided, and multiple support bases 31 are sequentially installed on the base plate 1 along the length direction of the base plate 1. The fixing bar 37 is installed on the support base 31, and a sliding groove is provided between the fixing bar 37 and the support base 31. The sliding bar 35 is installed in the sliding groove, the spring piece 36 is installed on the sliding bar 35, the slider 34 is connected to the sliding bar 35, the screw 33 is threadedly connected to the slider 34, and the clamp 32 is installed on the support base 31. The screw 33 is connected to the clamp 32. With this structure, a body trim strip can be placed on the fixing strip 37. When the clamp 32 drives the screw 33 to rotate, the screw 33 can drive the slider 34 to slide. When the slider 34 slides, it drives the sliding strip 35 to slide in the groove. When the sliding strip 35 slides, it drives the spring 36 to move, so that the spring 36 can press against the body trim strip to clamp the body trim strip, thereby improving the reliability of the body trim strip installation.

[0048] In some embodiments of this application, the fixing strip 37 is provided with multiple mounting slots, and the vehicle body trim strip can be placed in the mounting slots.

[0049] In some embodiments of this application, the clamping body component 3 further includes a connecting block, and the connecting block and the base plate 1 are connected by screws, and the support body 31 is mounted on the connecting block by screws.

[0050] In some embodiments of this application, the aforementioned device can be widely applied to the polishing and grinding processes of bright strips on aluminum alloy exterior trim parts of car bodies, and can be widely used in the grinding process equipment for car body parts, achieving simultaneous improvement in efficiency and quality. Furthermore, the aforementioned device in this embodiment has a compact and exquisite structure, with its size reduced by approximately one-third compared to similar products.

[0051] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0052] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0053] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A polishing device for vehicle exterior trim parts with a quick-release structure, characterized in that, It includes a base plate, a wear-resistant component, and a clamping body assembly. The wear-resistant component and the clamping body assembly are both mounted on the base plate. The clamping body assembly is used to clamp exterior trim parts of the vehicle body. The wear-resistant component includes a support member, a wear-resistant component, and a quick-change mechanism. The support member is detachably connected to the base plate, and the wear-resistant component is installed on the support member. The quick-change mechanism includes a handle, a cam component, a connecting shaft, a pressure plate, a spring, and a first nut. The handle is connected to the cam component. The pressure plate has a first through hole, and the base plate has a second through hole. The first end of the connecting shaft is rotatably connected to the cam component. The second end of the connecting shaft passes through the first through hole and the second through hole in sequence, extends out, and is threadedly connected to the first nut. The spring is sleeved outside the connecting shaft and located between the pressure plate and the base plate. The support component is pressed between the pressure plate and the base plate.

2. The device for polishing the exterior body of a vehicle with a quick release structure according to claim 1, characterized in that, The quick-change mechanism also includes a rotating shaft, and the cam component includes a left side plate, a middle plate, and a right side plate, which are connected in sequence to form a U-shaped structure. The handle is connected to the middle plate, the upper end of the connecting shaft is connected to the rotating shaft, the left side plate is provided with a first rotating hole, the right side plate is provided with a second rotating hole, and the two ends of the rotating shaft are respectively inserted into the first rotating hole and the second rotating hole; Both the left and right side plates are cam structures.

3. The device for polishing the exterior body of a vehicle with a quick release structure according to claim 2, characterized in that, The quick-change mechanism also includes a support pin and a second nut. The base plate is also provided with a first threaded hole. The lower surface of the pressure plate is provided with a limiting groove. The upper end of the support pin is located in the limiting groove. The lower end of the support pin is threadedly connected to the first threaded hole. The lower end of the support pin extends through the first threaded hole and is threadedly connected to the second nut.

4. The vehicle exterior polishing device with a quick-release structure according to claim 3, characterized in that, The quick-change mechanism also includes a locking pin. The front surface of the pressure plate is provided with a second threaded hole, which is connected to the limiting groove. The locking pin is threaded into the second threaded hole, and one end of the locking pin abuts against the upper part of the support pin.

5. The vehicle exterior polishing device with a quick-release structure according to claim 2, characterized in that, The connecting shaft is also fitted with a first washer and a second washer. The first washer is located between the cam and the pressure plate, and the second washer is located between the spring and the pressure plate.

6. The vehicle exterior polishing device with a quick-release structure according to claim 5, characterized in that, The first perforation is an elongated hole provided along the length of the pressure plate.

7. The vehicle exterior trim polishing device with a quick-release structure according to claim 1, characterized in that, The quick-change mechanism also includes a quick-change pin, and the base plate is provided with a third through hole. The bottom surface of the support member is provided with a pin hole, and the upper end of the quick-change pin passes through the third through hole and extends into the pin hole.

8. The vehicle exterior polishing device with a quick-release structure according to claim 1, characterized in that, The base plate is provided with a positioning groove, the support member is installed in the positioning groove, the lower surface of the support member is provided with a positioning protrusion, and the positioning protrusion abuts against the front surface of the base plate.

9. The vehicle exterior polishing device with a quick-release structure according to claim 1, characterized in that, Two support members are provided, and the two support members are symmetrically arranged on both sides of the base plate. The wear-resistant part is connected to both support members. Two quick-change mechanisms are provided, and the two quick-change mechanisms are used to press the two support members respectively.

10. The vehicle exterior polishing device with a quick-release structure according to claim 1, characterized in that, The clamping assembly includes a support base, clamps, a screw, a slider, a sliding bar, a spring, and a fixing bar. Multiple support bases are provided and sequentially mounted on the base plate along its length. The fixing bar is mounted on the support base, and a groove is provided between the fixing bar and the support base. The sliding bar is mounted within the groove, and the spring is mounted on the sliding bar. The slider is connected to the sliding bar, and the screw is threadedly connected to the slider. The clamps are mounted on the support base, and the screw is connected to the clamps.

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