Metal composite expansion type fireproof plate conveying device facilitating feeding and discharging

By designing the fire-proof board conveying device of brackets, control equipment and limiting mechanisms, the problem that existing devices cannot adjust the height is solved, and the convenient loading and unloading of the fire-proof board is achieved, adapting to production line changes, and reducing the risk of equipment failure.

CN223254218UActive Publication Date: 2025-08-22LANGFANG ZHONGRUI FIREPROOF MATERIAL CO LTD
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Patent Information

Application Number
CN202422215404.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-10
Publication Date
2025-08-22
Estimated Expiration
2034-09-10

AI Technical Summary

Technical Problem

The existing metal composite expansion fireproof board conveyor cannot adjust the height when the production line layout or process flow changes, resulting in increased costs and impact on production progress, and equipment failures and safety hazards.

Method used

A fire-proof board conveying device including a bracket, control equipment, conveying mechanism and limiting mechanism is designed. The conveying plate height is adjusted by using a motor drive pulley and a reciprocating screw, the cylinder and electric telescopic rod pushing material, and the fire-proof board is prevented from sliding off through a limiting sleeve and a silicone pad.

Benefits of technology

It realizes convenient loading and unloading of fireproof boards, ensures safety and stability during the conveying process, adapts to changes in production line height, and reduces the risk of equipment failure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of metal composite expansion type fireproof plate conveying, and discloses a metal composite expansion type fireproof plate conveying device facilitating feeding and discharging, which comprises a support, a control device is arranged on the front side face of the support, the control device is movably connected with the support, and a conveying mechanism is arranged on the left side of the control device. A limiting mechanism is arranged on the top face of the support. Through the conveying mechanism, a self-locking wheel in a conveying part is utilized to integrally move the conveying mechanism, so that a motor is utilized to drive a belt pulley and a belt to rotate, the belt pulley drives a reciprocating screw rod to rotate, the reciprocating screw rod drives a linear plate, the linear plate drives a conveying plate to move under the action of a sliding rod, and the height of the conveying plate is adjusted; and the air cylinder is used for adjusting the heights of the lifting plate, the electric telescopic rod and the push plate, so that the electric telescopic rod drives the push plate, and the fireproof plate on the conveying plate is pushed.
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Description

Technical Field

[0001] The utility model relates to the technical field of conveying metal composite expansion type fireproof panels, in particular to a metal composite expansion type fireproof panel conveying device which is convenient for loading and unloading. Background Art

[0002] A metal composite intumescent fireproof board conveying device that is convenient for loading and unloading. Its main design purpose is to improve the conveying efficiency of fireproof boards during processing, production and installation, and to ensure the convenience and safety of loading and unloading operations.

[0003] Compared with the existing technology: when the production line layout or process flow changes, the conveying device that cannot adjust the height may need to be replaced or redesigned to adapt to the new production needs, which not only increases the cost, but may also affect the production progress. If the fireproof board cannot move forward smoothly or accumulates too much during the conveying process, it may increase the risk of equipment failure and even lead to safety accidents.

[0004] Therefore, a metal composite intumescent fireproof board conveying device which is convenient for loading and unloading is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a metal composite intumescent fireproof board conveying device which is convenient for loading and unloading, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a metal composite intumescent fireproof board conveying device that is convenient for loading and unloading, comprising a bracket, a control device provided on the front side of the bracket, the control device being movably connected to the bracket, a conveying mechanism provided on the left side of the control device, and a limiting mechanism provided on the top surface of the bracket;

[0007] The conveying mechanism includes a conveying part and a pushing part;

[0008] The pushing part is located on the left side of the conveying part;

[0009] The limiting mechanism includes a limiting portion and a driving portion;

[0010] The driving portion is located on the outer side of the limiting portion.

[0011] Preferably, the conveying part includes self-locking wheels, four of which are arranged on the left and right sides, a bottom plate is arranged on the top surface of the self-locking wheel, the bottom surface of the bottom plate is movably connected to the self-locking wheel, an auxiliary plate is arranged on the left side of the bottom plate, the auxiliary plate is fixedly connected to the bottom plate, and an L-shaped plate is arranged on the right side of the auxiliary plate, and the bottom surface of the L-shaped plate is fixedly connected to the top surface of the bottom plate.

[0012] Preferably, a motor is provided on the right side of the auxiliary plate, the motor is located on the inner side of the base plate, the motor is fixedly connected to the inner side of the base plate, a pulley is provided on the output end face of the motor, the bottom face of the rear pulley is fixedly connected to the motor, the bottom face of the front pulley is fixedly connected to a rotating rod, the bottom end face of the rotating rod is rotatably connected to the inner side of the base plate through a bearing seat, a belt is sleeved on the surface of the pulley, and the belt is movably connected to the pulley.

[0013] Preferably, the pushing part includes a reciprocating screw rod, two of which are arranged in the front and rear, the bottom end face of the reciprocating screw rod is fixedly connected to the top end face of the pulley, the reciprocating screw rod extends through to the top of the base plate, the top end face of the reciprocating screw rod is rotatably connected to the inner side face of the L-shaped plate through the second bearing seat, and the surface of the reciprocating screw rod is threadedly connected to the inner wall of the base plate.

[0014] Preferably, a sliding rod is provided on the outside of the reciprocating screw rod, the top surface of the sliding rod is fixedly connected to the inner side surface of the L-shaped plate, the bottom surface of the sliding rod is fixedly connected to the top surface of the bottom plate, the surface of the sliding rod is sleeved with a straight plate, the straight plate is slidably connected to the surface of the sliding rod, the inner wall of the straight plate is threadedly connected to the surface of the reciprocating screw rod, the inner side surface of the straight plate is provided with a conveying plate, the outer side surface of the conveying plate is fixedly connected to the inner side surface of the straight plate, a cylinder is provided on the left side of the conveying plate, the bottom surface of the cylinder is fixedly connected to the top surface of the auxiliary plate, and the output end surface of the cylinder is provided with a lifting plate.

[0015] Preferably, the lifting plate is fixedly connected to the cylinder, the top surface of the lifting plate is provided with an electric telescopic rod, the bottom surface of the electric telescopic rod is fixedly connected to the lifting plate, the output end surface of the electric telescopic rod is provided with a push plate, and the push plate is fixedly connected to the electric telescopic rod, through the conveying part and the pushing part in the conveying mechanism, thereby achieving the effect of convenient loading and unloading.

[0016] Preferably, the limiting part includes a conveyor belt, which is located on the inner side of the bracket, and the conveyor belt is movably connected to the bracket. A silicone pad is provided on the outer side of the conveyor belt, and a limiting plate is provided on the outer side of the silicone pad. The limiting plate is fixedly connected to the silicone pad, and a light rod is provided on the outer side of the limiting plate, and the light rod is fixedly connected to the limiting plate.

[0017] Preferably, the driving part includes a limit sleeve, four of which are arranged at the front and back, the inner side of the limit sleeve is fixedly connected to the outer side of the light rod, the inner side of the limit sleeve is provided with a screw rod, the inner end surface of the screw rod is fixedly connected to the outer side of the limit plate, the outer end surface of the screw rod is provided with a turn handle, the turn handle is fixedly connected to the screw rod, and the inner side of the turn handle is provided with a vertical plate, the bottom surface of the vertical plate is fixedly connected to the top surface of the bracket, the screw rod and the light rod extend through and extend to the outside of the vertical plate, the screw rod is threadedly connected to the vertical plate, the light rod is slidably connected to the vertical plate, and the limiting effect is achieved through the limiting part and the driving part in the limiting mechanism.

[0018] Compared with the prior art, the beneficial effects of the present invention are: the metal composite expansion type fireproof board conveying device is convenient for loading and unloading.

[0019] (1) Through the conveying mechanism, the self-locking wheel in the conveying part is used to move it as a whole, so that the motor is used to drive the pulley and the belt to rotate, so that the pulley drives the reciprocating screw to rotate, so that the reciprocating screw drives the straight plate, so that the straight plate drives the conveying plate to move under the action of the sliding rod, so as to adjust its height, and the cylinder is used to adjust the height of its lifting plate, electric telescopic rod, and push plate, so that the electric telescopic rod drives the push plate, so as to push the fireproof plate on the conveying plate, so that it maintains an appropriate height difference with the production line or warehouse shelf, which is convenient for carrying and placing the fireproof plate.

[0020] (2) Through the limiting mechanism, the handle in the driving part is used to drive the screw to rotate, so that the screw limit plate and the silicone pad are moved, thereby limiting the fireproof board and ensuring that it will not slip or tilt during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the overall cross-section of the structure of the utility model;

[0023] Figure 3 This is a three-dimensional schematic diagram of the conveying structure of the utility model;

[0024] Figure 4 This is a three-dimensional schematic diagram of the reciprocating screw rod of the conveying structure of the utility model;

[0025] Figure 5 It is a three-dimensional schematic diagram of the limiting structure of the utility model.

[0026] In the figure: 1 bracket, 2 control device, 3 conveying mechanism, 31 conveying part, 32 pushing part, 311 self-locking wheel, 312 bottom plate, 313 auxiliary plate, 314 motor, 315 pulley, 316 belt, 321 reciprocating screw, 322 slide rod, 323 straight plate, 324 conveying plate, 325 cylinder, 326 lifting plate, 327 electric telescopic rod, 328 pushing plate, 4 limiting mechanism, 41 limiting part, 42 driving part, 411 conveyor belt, 412 silicone pad, 413 limiting plate, 414 polished rod, 421 limiting sleeve, 422 screw, 423 handle, 424 vertical plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] Example 1

[0029] See also Figures 1-4 The utility model provides a technical solution: a metal composite intumescent fireproof board conveying device that is convenient for loading and unloading, comprising a bracket 1, a control device 2 is provided on the front side of the bracket 1, the control device 2 is movably connected to the bracket 1, a conveying mechanism 3 is provided on the left side of the control device 2, and a limiting mechanism 4 is provided on the top surface of the bracket 1;

[0030] The conveying mechanism 3 includes a conveying portion 31 and a pushing portion 32;

[0031] The pushing portion 32 is located on the left side of the conveying portion 31;

[0032] The limiting mechanism 4 includes a limiting portion 41 and a driving portion 42;

[0033] The driving portion 42 is located on the outer side of the limiting portion 41 .

[0034] The conveying part 31 includes a self-locking wheel 311, four of which are arranged on the left and right sides. A bottom plate 312 is arranged on the top surface of the self-locking wheel 311, and the bottom surface of the bottom plate 312 is movably connected to the self-locking wheel 311. An auxiliary plate 313 is arranged on the left side of the bottom plate 312, and the auxiliary plate 313 is fixedly connected to the bottom plate 312. An L-shaped plate is arranged on the right side of the auxiliary plate 313, and the bottom surface of the L-shaped plate is fixedly connected to the top surface of the bottom plate 312.

[0035] A motor 314 is provided on the right side of the auxiliary plate 313. The motor 314 is located on the inner side of the base plate 312. The motor 314 is fixedly connected to the inner side of the base plate 312. A pulley 315 is provided on the output end face of the motor 314. The bottom face of the rear pulley 315 is fixedly connected to the motor 314. The bottom face of the front pulley 315 is fixedly connected to a rotating rod. The bottom end face of the rotating rod is rotatably connected to the inner side of the base plate 312 through a bearing seat. A belt 316 is sleeved on the surface of the pulley 315, and the belt 316 is movably connected to the pulley 315.

[0036] The pushing part 32 includes a reciprocating screw rod 321, and two reciprocating screw rods 321 are arranged in the front and back. The bottom end surface of the reciprocating screw rod 321 is fixedly connected to the top surface of the pulley 315. The reciprocating screw rod 321 extends to the top of the base plate 312. The top surface of the reciprocating screw rod 321 is rotatably connected to the inner surface of the L-shaped plate through the second bearing seat, and the surface of the reciprocating screw rod 321 is threadedly connected to the inner wall of the base plate 312.

[0037] A sliding rod 322 is provided on the outside of the reciprocating screw rod 321. The top surface of the sliding rod 322 is fixedly connected to the inner surface of the L-shaped plate, and the bottom surface of the sliding rod 322 is fixedly connected to the top surface of the bottom plate 312. A straight plate 323 is sleeved on the surface of the sliding rod 322. The straight plate 323 is slidably connected to the surface of the sliding rod 322. The inner wall of the straight plate 323 is threadedly connected to the surface of the reciprocating screw rod 321. A conveying plate 324 is provided on the inner side of the straight plate 323. The outer side of the conveying plate 324 is fixedly connected to the inner side of the straight plate 323. A cylinder 325 is provided on the left side of the conveying plate 324. The bottom surface of the cylinder 325 is fixedly connected to the top surface of the auxiliary plate 313. The output end surface of the cylinder 325 is provided with a lifting plate 326.

[0038] The lifting plate 326 is fixedly connected to the cylinder 325, and the top surface of the lifting plate 326 is provided with an electric telescopic rod 327, the bottom surface of the electric telescopic rod 327 is fixedly connected to the lifting plate 326, and the output end surface of the electric telescopic rod 327 is provided with a push plate 328, which is fixedly connected to the electric telescopic rod 327.

[0039] Furthermore, in this embodiment, the conveying mechanism 3 utilizes the self-locking wheel 311 in the conveying part 31 to move as a whole, thereby utilizing the motor 314 in the conveying part 31. When the motor 314 starts to rotate, the motor 314 drives the pulley 315 to rotate, so that the pulley 315 and the belt 316 are adapted, so that the pulley 315 drives the reciprocating screw rod 321 to rotate, so that the reciprocating screw rod 321 drives the straight plate 323, so that the straight plate 323 and the reciprocating screw rod 321 are threadedly rotated, so that the straight plate 323 drives the conveying plate 324 to move up and down under the action of the sliding rod 322, so that it reaches the appropriate position. When it reaches the appropriate position, the cylinder 325 drives the lifting plate 326 and the electric telescopic rod 327 to move, so that they are flush with the conveying plate 324, so that by driving the electric telescopic rod 327, the electric telescopic rod 327 drives the push plate 328 to move, thereby pushing the material, thereby conveying;

[0040] Furthermore, in this embodiment, the conveying mechanism 3 utilizes the self-locking wheel 311 in the conveying part 31 to move the entire conveying part 31, thereby utilizing the motor 314 to make the motor 314 drive the pulley 315 and the belt 316 to rotate, so that the pulley 315 drives the reciprocating screw rod 321 to rotate, so that the reciprocating screw rod 321 drives the straight plate 323, so that the straight plate 323 drives the conveying plate 324 to move under the action of the sliding rod 322, thereby adjusting its height, thereby utilizing the cylinder 325 to make the cylinder 325 adjust the height of its lifting plate 326, the electric telescopic rod 327, and the push plate 328, so that the electric telescopic rod 327 drives the push plate 328, thereby pushing the fireproof board on the conveying plate 324, thereby maintaining an appropriate height difference between it and the production line or warehouse shelf, which is convenient for carrying and placing the fireproof board;

[0041] Example 2

[0042] See also Figure 1 、 Figure 2 、 Figure 5 , and on the basis of Example 1, it is further obtained that: the limiting part 41 includes a conveyor belt 411, the conveyor belt 411 is located on the inner side of the bracket 1, the conveyor belt 411 is movably connected to the bracket 1, a silicone pad 412 is provided on the outside of the conveyor belt 411, and a limiting plate 413 is provided on the outer side of the silicone pad 412, the limiting plate 413 is fixedly connected to the silicone pad 412, and a light rod 414 is provided on the outer side of the limiting plate 413, and the light rod 414 is fixedly connected to the limiting plate 413.

[0043] The driving part 42 includes a limit sleeve 421, four of which are arranged in the front and back. The inner side of the limit sleeve 421 is fixedly connected to the outer side of the light rod 414, and a screw rod 422 is arranged on the inner side of the limit sleeve 421. The inner end face of the screw rod 422 is fixedly connected to the outer side of the limit plate 413, and the outer end face of the screw rod 422 is provided with a turning handle 423, and the turning handle 423 is fixedly connected to the screw rod 422. A vertical plate 424 is arranged on the inner side of the turning handle 423, and the bottom surface of the vertical plate 424 is fixedly connected to the top surface of the bracket 1. The screw rod 422 and the light rod 414 extend through and extend to the outside of the vertical plate 424. The screw rod 422 is threadedly connected to the vertical plate 424, and the light rod 414 is slidably connected to the vertical plate 424.

[0044] Furthermore, in this embodiment, the limiting mechanism 4 utilizes the handle 423 in the limiting portion 41 to rotate the handle 423, so that the handle 423 drives the screw rod 422 to rotate, thereby causing the screw rod 422 and the vertical plate 424 to threadedly move, so that the screw rod 422 drives the limiting plate 413 and the silicone pad 412 to move, so that the limiting plate 413 and the silicone pad 412 move stably under the action of the polished rod 414, thereby limiting the position;

[0045] Furthermore, this embodiment uses the limiting mechanism 4 and the handle 423 in the driving part 42 to make the handle 423 drive the screw rod 422 to rotate, so that the screw rod 422 limits the limit plate 413 and the silicone pad 412, thereby causing the limiting plate 413 and the silicone pad 412 to move, thereby limiting and ensuring that the fireproof board will not slip or tilt during transportation.

[0046] When in use, the operator moves it to the left side of the transmission belt 411, and uses the self-locking wheel 311 in the conveying part 31 through the conveying mechanism 3 to move the whole, thereby using the motor 314 in the conveying part 31. When the motor 314 starts to rotate, the motor 314 drives the pulley 315 to rotate, so that the pulley 315 and the belt 316 are adapted, so that the pulley 315 drives the reciprocating screw rod 321 to rotate, so that the reciprocating screw rod 321 drives the straight plate 323, so that the straight plate 323 and the reciprocating screw rod 321 are threadedly rotated, so that the straight plate 323 drives the conveying plate 324 to rise and fall under the action of the sliding rod 322, so that it reaches the appropriate position. When it reaches the appropriate position, The cylinder 325 drives the lifting plate 326 and the electric telescopic rod 327 to move, so that they are flush with the conveying plate 324, and then drives the electric telescopic rod 327 to drive the push plate 328 to move, so as to push the material, so as to convey it, and when it is pushed onto the conveyor belt 411, the limit mechanism 4 is used to use the turning handle 423 in the limiting part 41 to rotate the turning handle 423, so that the turning handle 423 drives the screw rod 422 to rotate, so that the screw rod 422 and the vertical plate 424 are threaded, so that the screw rod 422 drives the limiting plate 413 and the silicone pad 412 to move, so that the limiting plate 413 and the silicone pad 412 move steadily under the action of the light rod 414, thereby limiting the conveyor belt 411.

[0047] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal composite intumescent fireproof board conveying device convenient for loading and unloading, comprising a bracket (1), characterized in that: A control device (2) is provided on the front side of the bracket (1), the control device (2) is movably connected to the bracket (1), a conveying mechanism (3) is provided on the left side of the control device (2), and a limiting mechanism (4) is provided on the top surface of the bracket (1); The conveying mechanism (3) includes a conveying portion (31) and a pushing portion (32); The pushing portion (32) is located on the left side of the conveying portion (31); The limiting mechanism (4) comprises a limiting portion (41) and a driving portion (42); The driving portion (42) is located on the outer side of the limiting portion (41).

2. The metal composite intumescent fireproof board conveying device that is convenient for loading and unloading according to claim 1 is characterized in that: The conveying portion (31) includes a self-locking wheel (311), four of which are arranged on the left and right sides. A bottom plate (312) is arranged on the top surface of the self-locking wheel (311), and the bottom surface of the bottom plate (312) is movably connected to the self-locking wheel (311). An auxiliary plate (313) is arranged on the left side of the bottom plate (312), and the auxiliary plate (313) is fixedly connected to the bottom plate (312). An L-shaped plate is arranged on the right side of each of the auxiliary plates (313), and the bottom surface of the L-shaped plate is fixedly connected to the top surface of the bottom plate (312).

3. The metal composite intumescent fireproof board conveying device that is convenient for loading and unloading according to claim 2 is characterized in that: A motor (314) is provided on the right side of the auxiliary plate (313), and the motor (314) is located on the inner side of the bottom plate (312). The motor (314) is fixedly connected to the inner side of the bottom plate (312). A pulley (315) is provided on the output end face of the motor (314), the bottom face of the rear pulley (315) is fixedly connected to the motor (314), and the bottom face of the front pulley (315) is fixedly connected to a rotating rod. The bottom face of the rotating rod is rotatably connected to the inner side of the bottom plate (312) through a bearing seat. A belt (316) is sleeved on the surface of the pulley (315), and the belt (316) is movably connected to the pulley (315).

4. The metal composite intumescent fireproof board conveying device that is convenient for loading and unloading according to claim 3 is characterized by: The pushing portion (32) includes a reciprocating screw rod (321), two of which are arranged at the front and rear ends. The bottom end surface of the reciprocating screw rod (321) is fixedly connected to the top end surface of the pulley (315). The reciprocating screw rod (321) extends through and extends to the top of the base plate (312). The top end surface of the reciprocating screw rod (321) is rotatably connected to the inner side surface of the L-shaped plate through the second bearing seat, and the surface of the reciprocating screw rod (321) is threadedly connected to the inner wall of the base plate (312).

5. The metal composite intumescent fireproof board conveying device that is convenient for loading and unloading according to claim 4 is characterized in that: The outer side of the reciprocating screw rod (321) is provided with a sliding rod (322), the top surface of the sliding rod (322) is fixedly connected to the inner side surface of the L-shaped plate, the bottom surface of the sliding rod (322) is fixedly connected to the top surface of the bottom plate (312), the surface of the sliding rod (322) is sleeved with a straight plate (323), the straight plate (323) is slidably connected to the surface of the sliding rod (322), the inner wall of the straight plate (323) is threadedly connected to the surface of the reciprocating screw rod (321), the inner side surface of the straight plate (323) is provided with a conveying plate (324), the outer side surface of the conveying plate (324) is fixedly connected to the inner side surface of the straight plate (323), a cylinder (325) is provided on the left side of the conveying plate (324), the bottom surface of the cylinder (325) is fixedly connected to the top surface of the auxiliary plate (313), and the output end surface of the cylinder (325) is provided with a lifting plate (326).

6. The metal composite intumescent fireproof board conveying device that is convenient for loading and unloading according to claim 5 is characterized in that: The lifting plate (326) is fixedly connected to the cylinder (325); the top surface of the lifting plate (326) is provided with an electric telescopic rod (327); the bottom surface of the electric telescopic rod (327) is fixedly connected to the lifting plate (326); the output end surface of the electric telescopic rod (327) is provided with a push plate (328); the push plate (328) is fixedly connected to the electric telescopic rod (327).

7. The metal composite intumescent fireproof board conveying device that is convenient for loading and unloading according to claim 1 is characterized in that: The limiting portion (41) comprises a conveyor belt (411), the conveyor belt (411) is located on the inner side of the bracket (1), the conveyor belt (411) is movably connected to the bracket (1), a silicone pad (412) is provided on the outer side of the conveyor belt (411), a limiting plate (413) is provided on the outer side of the silicone pad (412), the limiting plate (413) is fixedly connected to the silicone pad (412), and a polished rod (414) is provided on the outer side of the limiting plate (413), and the polished rod (414) is fixedly connected to the limiting plate (413).

8. The metal composite intumescent fireproof board conveying device that is convenient for loading and unloading according to claim 7 is characterized in that: The driving part (42) includes a limiting sleeve (421), four limiting sleeves (421) are provided at the front and rear, the inner side of the limiting sleeve (421) is fixedly connected to the outer side of the light rod (414), the inner side of each limiting sleeve (421) is provided with a screw rod (422), the inner end surface of each screw rod (422) is fixedly connected to the outer side surface of the limiting plate (413), and the outer end surface of each screw rod (422) is provided with a handle (423). The handle (423) is fixedly connected to the screw rod (422), and a vertical plate (424) is provided on the inner side of the handle (423). The bottom surface of the vertical plate (424) is fixedly connected to the top surface of the bracket (1). The screw rod (422) and the light rod (414) extend through the outside of the vertical plate (424). The screw rod (422) is threadedly connected to the vertical plate (424), and the light rod (414) is slidably connected to the vertical plate (424).