Lifting device for electromechanical installations
By introducing support and adjustment components into the lifting device, multiple adjustments to the workpiece are achieved, solving the problem that traditional lifting devices cannot adjust the posture. This makes it suitable for complex electromechanical installations and improves installation efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANXI CONSTR ENG CO LTD
- Filing Date
- 2024-01-30
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional lifting devices lack a posture adjustment structure, making it impossible to adjust the posture of the workpiece according to actual installation requirements. This results in limited functionality and makes them unsuitable for complex electromechanical installation scenarios.
A lifting device is designed, comprising a drive vehicle body, a lifting platform, a protective fence, a support component, and an adjustment component. The support component uses adjustable support plates, limit slide rails, hydraulic cylinders, and other components to support, fix, and adjust the posture of the workpiece. The adjustment component uses hydraulic cylinders, posture adjusters, and other components to achieve multiple adjustments of the workpiece.
It enables multiple adjustments to the workpiece position and orientation, is suitable for complex electromechanical installation scenarios, improves installation efficiency and safety, has a simple structure, is easy to use, has low cost, and has a low failure rate.
Smart Images

Figure CN117699689B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of electromechanical installation technology, and specifically relates to a lifting device for electromechanical installation. Background Technology
[0002] Electromechanical installation refers to the installation of electromechanical equipment. Most enterprises today have automated machinery and equipment, which is why the electromechanical installation industry was born. Electromechanical installation is a large-scale project with high technical requirements. When some large enterprises relocate, a single project may take nearly half a year to implement. Corresponding lifting devices are used during electromechanical installation. Traditional lifting devices include a lifting platform, positioning column, fixing box, guide column, clamping plate, lead screw, forward and reverse motor and sliding plate. The advantage of this lifting device is that it can prevent the lifting platform from falling accidentally, thus improving the safety of workers when operating the lifting device. However, traditional lifting devices lack a posture adjustment structure, which prevents users from adjusting the posture of the workpiece according to actual installation needs. This makes the lifting device's function relatively simple and unsuitable for complex electromechanical installation scenarios, thus requiring urgent improvement. Summary of the Invention
[0003] The purpose of this invention is to provide a lifting device for electromechanical installation, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: a lifting device for electromechanical installation, comprising a drive vehicle body, a lifting platform disposed above the drive vehicle body, a height adjuster disposed on the top of the drive vehicle body for supporting and adjusting the height of the lifting platform, a protective fence disposed on the upper surface of the lifting platform, a support mechanism disposed inside the protective fence, the support mechanism comprising a support component for supporting and fixing the workpiece, and an adjustment component for adjusting the position, height, and posture of the support component, the support component being disposed on top of the adjustment component, the support component comprising a first adjustable support plate, a second adjustable support plate disposed above the first adjustable support plate, and a limiting support block disposed in the middle of the upper surface of the first adjustable support plate for supporting and fixing the second adjustable support plate.
[0005] As a further aspect of the present invention: a second limiting slide rail is fixedly connected to both ends of the upper surface of the first adjustable support plate, and an adjustable support block for supporting the second adjustable support plate is slidably connected on the second limiting slide rail. The adjustable support block is slidably connected to the second adjustable support plate, and a first position adjusting member for adjusting the position of the adjustable support block is provided on the top side of the limiting support block.
[0006] As a further embodiment of the present invention: the upper surface of the adjustable support block is provided with an adjustable fixing plate, the adjustable fixing plate is fixedly connected to the adjustable support block, the two ends of the second adjustable support plate are provided with limiting through holes corresponding to the adjustable fixing plate, and the upper surface of the second adjustable support plate is provided with an elastic protective plate for anti-slip and shock absorption.
[0007] As a further embodiment of the present invention: the adjustment assembly includes a third adjustable support plate, which is fixedly connected to the lifting platform. A limit support base is provided above the third adjustable support plate. Adjustable transmission plates are fixedly connected to both ends of the limit support base. A third position adjustment component is fixedly connected to both ends of the upper surface of the third adjustable support plate to cooperate with the adjustable transmission plate to adjust the height of the limit support base. The third position adjustment component is fixedly connected to the adjustable transmission plate. An attitude adjuster is slidably connected to the top of the limit support base. A plurality of fourth position adjustment components are provided on the upper surface of the attitude adjuster to support and adjust the height of the first adjustable support plate. Limit cylinders are fixedly connected to both ends of the attitude adjuster. Adjustment through holes for accommodating the lateral sliding of the limit cylinders are opened at both ends of the limit support base. An adjustable locking plate for fixing the attitude adjuster is provided inside the limit support base. A plurality of second position adjustment components for supporting and adjusting the height of the adjustable locking plate are provided at both ends of the limit support base.
[0008] As a further embodiment of the present invention: an elastic reinforcing plate is fixedly connected to the upper surface of the adjustable locking plate, and a flexible reinforcing sleeve is fixedly connected to the outer surface of the attitude adjuster to cooperate with the elastic reinforcing plate to play an anti-slip and fixing role for the attitude adjuster.
[0009] As a further embodiment of the present invention: the attitude adjuster has mounting through holes at both ends, and a fifth position adjusting member is fixedly connected inside the mounting through holes. The telescopic end of the fifth position adjusting member is provided with an adjustable limit rod.
[0010] As a further embodiment of the present invention: the adjustable limiting rod is located inside the mounting through hole, the adjustable limiting rod is fixedly connected to the fifth position adjusting member, and a limiting groove for accommodating the lateral sliding of the adjustable limiting rod is provided on the bottom side of the limiting support base.
[0011] As a further embodiment of the present invention: the lower surface of the lifting platform is provided with an anti-pinch baffle, the side of the anti-pinch baffle is provided with a number of warning pieces for displaying warning information, the inside of the protective fence is also provided with a partition baffle, and the two ends of the protective fence are fixedly connected with a first limiting slide rail that is slidably connected to the partition baffle.
[0012] Compared with the prior art, the beneficial effects of the present invention are: the present invention has a simple structure and is easy to use. During use, through the cooperation of multiple structures, users can make multiple adjustments to the position and posture of the workpiece according to the actual assembly requirements, so as to facilitate the user to quickly install the workpiece. The lifting device can be better suited to complex electromechanical installation scenarios, and is worth promoting and using. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of a lifting device used for electromechanical installation; Figure 2 This is a schematic diagram of the support mechanism in a lifting device used for electromechanical installation. Figure 3 This is a schematic diagram of the structure of a support component in a lifting device used for electromechanical installation; Figure 4 This is a schematic diagram of the structure of an adjusting component in a lifting device used for electromechanical installation; Figure 5 This is a schematic diagram of the structure of a limit support base in a lifting device used for electromechanical installation; Figure 6 This is a schematic diagram of the attitude adjuster in a lifting device used for electromechanical installation. In the diagram: 1-First limiting slide rail, 2-Protective fence, 3-Support mechanism, 4-Divider baffle, 5-Lifting platform, 6-Warning component, 7-Anti-pinch baffle, 8-Drive vehicle body, 9-Height adjuster, 31-Support assembly, 32-Adjustment assembly, 310-Limiting support block, 311-First adjustable support plate, 312-Second limiting slide rail, 313-Adjustable support block, 314-Adjustable fixing plate, 315-Elastic protective plate, 316-Second adjustable support plate, 317-First position adjusting component, 31 8-Limiting through hole, 320-Second position adjustment component, 321-Adjustable locking plate, 322-Attitude adjuster, 323-Third adjustable support plate, 324-Third position adjustment component, 325-Adjustable transmission plate, 326-Limiting support base, 327-Adjusting through hole, 328-Fourth position adjustment component, 329-Elastic reinforcing plate, 330-Limiting groove, 331-Mounting through hole, 332-Limiting cylinder, 333-Flexible reinforcing sleeve, 334-Fifth position adjustment component, 335-Adjustable limiting rod. Detailed Implementation
[0014] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0015] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection", "linking", and "setting" should be interpreted broadly. For example, they can refer to fixed connection or setting, detachable connection or setting, or integral connection or setting.
[0016] Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0017] Please see Figure 1 and Figure 2 This embodiment provides a lifting device for electromechanical installation, including a drive vehicle body 8, a lifting platform 5 above the drive vehicle body 8, and a height adjuster 9 on the top of the drive vehicle body 8 for supporting and adjusting the height of the lifting platform 5. The use of the drive vehicle body 8 and the height adjuster 9 are both existing technologies. A protective fence 2 is provided on the upper surface of the lifting platform 5, and a support mechanism 3 is provided inside the protective fence 2. The support mechanism 3 includes a support component 31 for supporting and fixing the workpiece, and an adjustment component 32 for adjusting the position, height, and posture of the support component 31. The support component 31 is located on top of the adjustment component 32.
[0018] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment, to make the use of the support assembly 31 more reliable, the support assembly 31 preferably includes a first adjustable support plate 311, a second adjustable support plate 316 is provided above the first adjustable support plate 311, a limiting support block 310 for supporting and fixing the second adjustable support plate 316 is provided in the middle of the upper surface of the first adjustable support plate 311, a second limiting slide rail 312 is fixedly connected to both ends of the upper surface of the first adjustable support plate 311, an adjustable support block 313 for supporting the second adjustable support plate 316 is slidably connected on the second limiting slide rail 312, the adjustable support block 313 is slidably connected to the second adjustable support plate 316, and a first position adjusting member 317 for adjusting the position of the adjustable support block 313 is provided on the top side of the limiting support block 310, the first position adjusting member 317 being a hydraulic cylinder; Please see Figure 3In one embodiment, to enrich the function of the support component 31, preferably, the upper surface of the adjustable support block 313 is provided with an adjustable fixing plate 314. In use, the workpiece is clamped and fixed by the adjustable fixing plate 314. The adjustable fixing plate 314 is fixedly connected to the adjustable support block 313. The two ends of the second adjustable support plate 316 are provided with limiting through holes 318 corresponding to the adjustable fixing plate 314. The upper surface of the second adjustable support plate 316 is provided with an elastic protective plate 315 for anti-slip and shock absorption. The elastic protective plate 315 is a rubber plate, and the elastic protective plate 315 is provided with a second through hole corresponding to the limiting through hole 318.
[0019] In another embodiment, the support assembly 31 includes a first adjustable support plate 311, a second adjustable support plate 316 is disposed above the first adjustable support plate 311, a limiting support block 310 for supporting and fixing the second adjustable support plate 316 is disposed at the middle of the upper surface of the first adjustable support plate 311, a stainless steel rod is fixedly connected to the side of the limiting support block 310, an adjustable support block 313 for supporting the second adjustable support plate 316 is slidably connected to the stainless steel rod, the adjustable support block 313 is slidably connected to the second adjustable support plate 316, and a side top of the limiting support block 310 is provided for supporting the adjustable support block 313. The first position adjusting component 317, which is a cylinder, plays a role in position adjustment. The upper surface of the adjustable support block 313 is provided with an adjustable fixing plate 314. During use, the workpiece is clamped and fixed by the adjustable fixing plate 314. The adjustable fixing plate 314 is fixedly connected to the adjustable support block 313. The two ends of the second adjustable support plate 316 are provided with limiting through holes 318 corresponding to the adjustable fixing plate 314. The upper surface of the second adjustable support plate 316 is provided with an elastic protective plate 315 for anti-slip and shock absorption. The elastic protective plate 315 is a silicone plate. The elastic protective plate 315 is provided with a second through hole corresponding to the limiting through hole 318.
[0020] Please see Figure 1 , Figure 2 , Figure 4 , Figure 5 and Figure 6In one embodiment, to make the use of the adjustment component 32 more reliable, preferably, the adjustment component 32 includes a third adjustable support plate 323, which is fixedly connected to the lifting platform 5. A limit support base 326 is provided above the third adjustable support plate 323. Adjustable transmission plates 325 are fixedly connected to both ends of the limit support base 326. A third position adjustment member 324 is fixedly connected to both ends of the upper surface of the third adjustable support plate 323 to cooperate with the adjustable transmission plate 325 to adjust the height of the limit support base 326. The third position adjustment member 324 is a hydraulic cylinder, which is fixedly connected to the adjustable transmission plate 325. The top of the limit support base 326 is slidably connected to... The posture adjuster 322 has several fourth position adjusting members 328 on its upper surface for supporting and adjusting the height of the first adjustable support plate 311. The fourth position adjusting members 328 are hydraulic cylinders. Limiting cylinders 332 are fixedly connected to both ends of the posture adjuster 322. Adjusting through holes 327 for accommodating the lateral sliding of the limiting cylinders 332 are opened at both ends of the limiting support base 326. An adjustable locking plate 321 for fixing the posture adjuster 322 is provided inside the limiting support base 326. Several second position adjusting members 320 for supporting and adjusting the height of the adjustable locking plate 321 are provided at both ends of the limiting support base 326. The second position adjusting members 320 are hydraulic cylinders. Please see Figure 4 , Figure 5 and Figure 6In one embodiment, to make the use of the adjustable locking plate 321 more reliable, preferably, an elastic reinforcing plate 329 is fixedly connected to the upper surface of the adjustable locking plate 321. The elastic reinforcing plate 329 is a rubber plate. A flexible reinforcing sleeve 333 is fixedly connected to the outer surface of the attitude adjuster 322 to cooperate with the elastic reinforcing plate 329 to play a role in preventing slippage and fixing the attitude adjuster 322. The flexible reinforcing sleeve 333 is made of rubber. The attitude adjuster 322 has mounting through holes 331 at both ends. A fifth position adjusting member 334 is fixedly connected inside the mounting through holes 331. The fifth position adjusting member 334 is an electric telescopic rod. The telescopic end of the fifth position adjusting member 334 is provided with an adjustable limit. The adjustable limit rod 335 is located inside the mounting through hole 331. The adjustable limit rod 335 is fixedly connected to the fifth position adjustment member 334. The bottom side of the limit support base 326 has a limit groove 330 for accommodating the lateral sliding of the adjustable limit rod 335. In use, the fifth position adjustment member 334 is extended so that the adjustable limit rod 335 abuts against the inner wall of the limit support base 326, thereby achieving the limit reinforcement of the attitude adjuster 322. When it is necessary to control the horizontal lateral movement of the attitude adjuster 322, the fifth position adjustment member 334 is extended so that the adjustable limit rod 335 is inserted into the limit groove 330, which makes it easy for the user to reliably move the attitude adjuster 322 laterally.
[0021] In another embodiment, the adjustment assembly 32 includes a third adjustable support plate 323, which is fixedly connected to the lifting platform 5. A limit support base 326 is provided above the third adjustable support plate 323. Adjustable transmission plates 325 are fixedly connected to both ends of the limit support base 326. A third position adjustment member 324, which is a cylinder, is fixedly connected to both ends of the upper surface of the third adjustable support plate 323 to adjust the height of the limit support base 326 in conjunction with the adjustable transmission plate 325. The third position adjustment member 324 is fixedly connected to the adjustable transmission plate 325. An attitude adjuster 322 is slidably connected to the top of the limit support base 326. The upper surface of the regulator 322 is provided with several fourth position adjustment members 328 for supporting and adjusting the height of the first adjustable support plate 311. The fourth position adjustment members 328 are cylinders. The two ends of the attitude adjuster 322 are fixedly connected to limit cylinders 332. The two ends of the limit support base 326 are provided with adjustment through holes 327 for accommodating the lateral sliding of the limit cylinders 332. The interior of the limit support base 326 is provided with an adjustable locking plate 321 for fixing the attitude adjuster 322. The two ends of the limit support base 326 are provided with several second position adjustment members 320 for supporting and adjusting the height of the adjustable locking plate 321. The second position adjustment members 320 are cylinders. In another embodiment, an elastic reinforcing plate 329 is fixedly connected to the upper surface of the adjustable locking plate 321. The elastic reinforcing plate 329 is a rubber plate. A flexible reinforcing sleeve 333 is fixedly connected to the outer surface of the attitude adjuster 322 to cooperate with the elastic reinforcing plate 329 to play a role in preventing slippage and fixing the attitude adjuster 322. The flexible reinforcing sleeve 333 is made of rubber. The attitude adjuster 322 has mounting through holes 331 at both ends. A fifth position adjusting member 334 is fixedly connected inside the mounting through hole 331. The fifth position adjusting member 334 is a cylinder. An adjustable limiting rod 335 is provided at the telescopic end of the fifth position adjusting member 334. The adjustable limiting rod 335 is located inside the mounting through hole 331. The adjustable limiting rod 335 is fixedly connected to the fifth position adjusting member 334. A limiting groove 330 is provided on the bottom side of the limiting support base 326 to accommodate the lateral sliding of the adjustable limiting rod 335.
[0022] Please see Figure 1 In one embodiment, to enrich the function of the lifting device, preferably, the lower surface of the lifting platform 5 is provided with an anti-pinch baffle 7, and the side of the anti-pinch baffle 7 is provided with a number of warning elements 6 for displaying warning information. The warning elements 6 are handwritten fluorescent boards or LED light boards. The interior of the protective fence 2 is also provided with a partition baffle 4. The two ends of the protective fence 2 are fixedly connected with a first limiting slide rail 1 that is slidably connected to the partition baffle 4. In use, the internal space of the protective fence 2 is divided by the partition baffle 4. One side of the partition baffle 4 is used to install the support mechanism 3, and the other side of the partition baffle 4 is used to accommodate the staff.
[0023] The working principle and usage process of this invention are as follows: When using the invention, the electromechanical equipment or its parts (hereinafter referred to as workpieces) to be installed are placed on the second adjustable support plate 316, and then the first position adjustment component 317 is controlled to retract, thereby clamping and fixing the workpieces through the adjustable fixing plates 314 at both ends of the second adjustable support plate 316. Then, the workers stand inside the protective fence 2, and then the lifting platform 5 is raised to the target height through the height adjuster 9. Then, according to the actual installation requirements, the staff controls the extension or retraction of the third position adjustment component 324, thereby raising or lowering the height of the second adjustable support plate 316 accordingly, achieving fine adjustment of the workpiece height. Secondly, when it is necessary to make a lateral fine adjustment of the workpiece position, the fifth position adjustment component 334 is extended, so that the adjustable limit rod 335 is inserted into the interior of the limit groove 330. Then, the second position adjustment component 320 is retracted, so that the adjustable locking plate 321 moves downward to release the limit fixation of the attitude adjuster 322. Then, the user pulls the second adjustable support plate 316, so that the attitude adjuster 322 can reliably translate along the length direction of the limit support base 326 through the mutual cooperation of the limit cylinder 332 and the adjustment through hole 327. With the limiting effect of the adjustable limit rod 335 and the limit groove 330, the workpiece can be reliably laterally moved, and the workpiece position can be further adjusted. When it is necessary to adjust the tilt angle of the workpiece, the fifth position adjustment component 334 is controlled to retract, so that the adjustable limit rod 335 is retracted into the mounting through hole 331. Then, the adjustable locking plate 321 is controlled to move down to release the limit fixation on the attitude adjuster 322. Then, the user can move the second adjustable support plate 316 to make the second adjustable support plate 316 swing left and right, thereby realizing the rapid adjustment of the tilt angle of the workpiece. Thus, through the cooperation of multiple structures, users can quickly adjust the height, tilt angle, and lateral position of the workpiece. By coordinating the above three adjustment methods, omnidirectional adjustment of the workpiece's posture can be achieved, allowing users to make multiple adjustments to the position and posture of the workpiece according to actual assembly requirements. This facilitates the rapid installation of the workpiece and makes the lifting device more suitable for complex electromechanical installation scenarios. Furthermore, the invention has a simple structure, is easy to use, has low cost, and a low failure rate, making it worthy of promotion and use.
[0024] The usage methods shown in the above working principle and usage process are only one of the many ways to use this application. Users can operate this application according to their actual usage needs or personal operating preferences.
[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A lifting device for electromechanical installation, comprising a drive vehicle body, a lifting platform disposed above the drive vehicle body, a height adjuster disposed on the top of the drive vehicle body for supporting and adjusting the height of the lifting platform, and a protective railing disposed on the upper surface of the lifting platform, characterized in that: The protective fence is internally equipped with a support mechanism, which includes a support component for supporting and fixing the workpiece, and an adjustment component for adjusting the position, height, and posture of the support component. The support component is located on top of the adjustment component and includes a first adjustable support plate. A second adjustable support plate is located above the first adjustable support plate, and a limiting support block for supporting and fixing the second adjustable support plate is located in the middle of the upper surface of the first adjustable support plate. The adjustment component includes a third adjustable support plate, which is fixedly connected to the lifting platform. A limiting support base is located above the third adjustable support plate, and adjustable transmission plates are fixedly connected to both ends of the limiting support base. The upper surface of the base is fixedly connected to two ends with a third position adjustment component for adjusting the height of the limiting support base in conjunction with the adjustable transmission plate. The third position adjustment component is fixedly connected to the adjustable transmission plate. The top of the limiting support base is slidably connected to an attitude adjuster. The upper surface of the attitude adjuster is provided with several fourth position adjustment components for supporting and adjusting the height of the first adjustable support plate. The two ends of the attitude adjuster are fixedly connected to limiting cylinders. The two ends of the limiting support base are provided with adjustment through holes for accommodating the lateral sliding of the limiting cylinders. The interior of the limiting support base is provided with an adjustable locking plate for fixing the attitude adjuster. The two ends of the limiting support base are provided with several second position adjustment components for supporting and adjusting the height of the adjustable locking plate.
2. The lifting device for electromechanical installation according to claim 1, characterized in that: The upper surface of the first adjustable support plate is fixedly connected to two ends of a second limiting slide rail. An adjustable support block for supporting the second adjustable support plate is slidably connected to the second limiting slide rail. The adjustable support block is slidably connected to the second adjustable support plate. A first position adjusting member for adjusting the position of the adjustable support block is provided on the top side of the limiting support block.
3. The lifting device for electromechanical installation according to claim 2, characterized in that: The upper surface of the adjustable support block is provided with an adjustable fixing plate, which is fixedly connected to the adjustable support block. The two ends of the second adjustable support plate are provided with limiting through holes corresponding to the adjustable fixing plate. The upper surface of the second adjustable support plate is provided with an elastic protective plate for anti-slip and shock absorption.
4. The lifting device for electromechanical installation according to claim 3, characterized in that: An elastic reinforcing plate is fixedly connected to the upper surface of the adjustable locking plate, and a flexible reinforcing sleeve is fixedly connected to the outer surface of the attitude adjuster to cooperate with the elastic reinforcing plate to play a role in preventing slippage and fixing the attitude adjuster.
5. The lifting device for electromechanical installation according to claim 4, characterized in that: The attitude adjuster has mounting through holes at both ends, and a fifth position adjustment component is fixedly connected inside the mounting through holes. The telescopic end of the fifth position adjustment component is provided with an adjustable limit rod.
6. The lifting device for electromechanical installation according to claim 5, characterized in that: The adjustable limit rod is located inside the mounting through hole and is fixedly connected to the fifth position adjustment component. The bottom side of the limit support base is provided with a limit groove for accommodating the lateral sliding of the adjustable limit rod.
7. The lifting device for electromechanical installation according to any one of claims 1-6, characterized in that: The lower surface of the lifting platform is provided with an anti-pinch baffle. Several warning pieces are provided on the side of the anti-pinch baffle to display warning information. The inside of the protective fence is also provided with a partition baffle. The two ends of the protective fence are fixedly connected with a first limit slide rail that is slidably connected to the partition baffle.