Adjusting support for assembling disc wing plate support of range hood

Abstract

The utility model discloses an adjusting support for assembling a dish wing plate support of a range hood, and relates to the technical field of adjusting supports, the adjusting support comprises an adjusting side frame, the outer wall of one side of the adjusting side frame is fixedly connected with a first motor, and the two sides of the interior of the adjusting side frame are both connected with a set of sliding side frames in a sliding mode; a lifting synchronous block is connected to one side of the outer wall of the sliding side frame in a sliding mode, and an electric screwdriver is fixedly connected to the center of the interior of the lifting synchronous block. The lifting driving sliding block can drive a plurality of lifting synchronous blocks on the two sides of the outer portion of the lifting driving sliding block and an electric screwdriver in the center of the lifting driving sliding block to vertically move through the hollow limiting shaft barrel and the limiting sliding shaft, the direction of the electric screwdriver is further adjusted, and then movement synchronization between the electric screwdrivers is achieved. And the situation that a plurality of electric screwdrivers are not coordinated is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of adjustment brackets, in particular to an adjustment bracket for assembling a range hood dish wing bracket. Background Art

[0002] The range hood disc is a key component installed inside the range hood. Its main function is to optimize the suction and discharge process of smoke. The disc is usually designed with an adjustable angle, which can be adjusted accordingly according to the amount and direction of smoke generated during cooking, so as to more effectively capture and guide the smoke into the range hood's air intake. By precisely controlling the path of smoke flow, the disc can significantly improve the range hood's exhaust efficiency, reduce oil fume residue in the kitchen, and keep the air fresh. In addition, a reasonable disc design can also reduce noise and enhance the user experience. In actual applications, the optimized design of the range hood disc plays a vital role in improving kitchen air quality, protecting the health of occupants, and maintaining a clean kitchen environment.

[0003] In actual application, the existing adjustment bracket for assembling the range hood disc wing bracket usually adopts multiple telescopic cylinders to simultaneously drive multiple electric screwdrivers on both sides of the outer wall of the adjustment side frame to move up and down. Although each electric screwdriver can be controlled independently, due to the lack of a synchronization mechanism between the multiple electric screwdrivers, in actual work, it is easy for the multiple electric screwdrivers to be uncoordinated. When one electric screwdriver completes its task while the other has not yet completed it, it may cause the disc wing bracket to tilt or become unstable, affecting the subsequent assembly accuracy and efficiency of the disc wing bracket. In view of this, we provide an adjustment bracket for assembling the range hood disc wing bracket. Utility Model Content

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide an adjustment bracket for assembling a range hood dish wing bracket.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustment bracket for assembling a range hood dish wing bracket, comprising an adjusting side frame, an outer wall of one side of the adjusting side frame is fixedly connected to a first motor, and a group of sliding side frames are slidably connected on both sides of the interior of the adjusting side frame, one side of the outer wall of the sliding side frame is slidably connected to a lifting synchronization block, and an electric screwdriver is fixedly connected to the internal center of the lifting synchronization block, one side of the outer wall of the sliding side frame is slidably connected to the inner side of the adjusting side frame through the first motor, and the inner center of the adjusting side frame is simultaneously fixedly connected to a central driving frame, the top end of the central driving frame is fixedly connected to a second motor, and the center of the outer wall of the central driving frame is slidably connected to a lifting driving slider, and the lifting driving slider and the inner side of the lifting synchronization block are slidably connected to the central driving frame and one side of the outer wall of the sliding side frame through the second motor respectively.

[0006] As mentioned above, the limiting slide rods are fixedly connected to both sides of the inner center of the adjusting side frame, and the limiting slide rods are located on both sides of the inner center of the sliding side frame. The inner center of the limiting slide rod is rotatably connected with a bidirectional screw rod, and the bidirectional screw rod is rotatably connected to the inner center of the adjusting side frame through the outer wall of the first motor output end.

[0007] As mentioned above, the outer wall of one end of the bidirectional screw rod is connected through one side of the inner wall of the adjusting side frame, and the outer wall of one end of the bidirectional screw rod is connected through the inner side of the adjusting side frame and fixedly connected to the outer wall of the first motor output end, and one end of the outer wall of the limiting slide rod is connected through one side of the outer wall of the sliding side frame, and the inner side of the sliding side frame is slidably connected to one end of the outer wall of the limiting slide rod.

[0008] As mentioned above, one end of the outer wall of the bidirectional screw rod is connected to the center of the outer wall of the sliding side frame through, and one end of the outer wall of the bidirectional screw rod is rotatably connected to the inner center of the sliding side frame through a thread.

[0009] As mentioned above, both sides of the outer walls of the central driving frame and the sliding side frame are provided with limiting slide grooves, and one side of the outer walls of the central driving frame and the sliding side frame are slidingly connected to the lifting driving slider and the inner side of the lifting synchronization block through the limiting slide grooves provided on their own outer walls. One side of the inner wall of the lifting driving slider and the lifting synchronization block is connected with the limiting slide groove through, and one side of the inner wall of the lifting driving slider and the lifting synchronization block is slidingly connected with the inner center of the limiting slide groove.

[0010] As mentioned above, the central center of the central drive frame is connected to a one-way screw, and the one-way screw is connected to the central center of the central drive frame through the output end of the second motor. The outer wall of one end of the one-way screw passes through the top of the inner wall of the central drive frame, and the center of the top surface of the one-way screw passes through the top of the center drive frame and is fixedly connected to the output end of the second motor.

[0011] As mentioned above, the lifting synchronization block is fixedly connected to a hollow limit shaft cylinder near the side of the lifting drive slider, and one end of the hollow limit shaft cylinder is slidingly connected to the limit sliding shaft, the outer wall of the limit sliding shaft is fixedly connected to the outer wall of one side of the lifting drive slider away from one end of the hollow limit shaft cylinder, and the limit sliding shaft is located on both sides of the outer wall of the lifting drive slider.

[0012] Compared with the prior art, the adjustable bracket for assembling the range hood disc wing bracket has the following beneficial effects:

[0013] 1. The utility model activates the first motor to drive the bidirectional lead screw to rotate in the inner center of the adjusting side frame. As the bidirectional lead screw rotates, the bidirectional lead screw can drive multiple sliding side frames to move simultaneously along the outer wall of the limiting slide bar toward the inner center or both sides of the adjusting side frame through the outer wall thread, and then drive the sliding side frames to move along the outer wall of the limiting slide bar to adjust the horizontal position of the electric screwdriver. Therefore, through the precise cooperation between the bidirectional lead screw and the limiting slide bar, the horizontal position of the electric screwdriver can be precisely adjusted, which facilitates the subsequent further adjustment of the position of the electric screwdriver by the device.

[0014] 2. The utility model cooperates with the one-way screw rod, the limiting slide groove, the hollow limiting shaft cylinder and the limiting sliding shaft, so that the lifting drive slider can drive multiple lifting synchronization blocks on both sides of itself and the electric screwdriver in its internal center to move vertically through the hollow limiting shaft cylinder and the limiting sliding shaft, and further adjust the orientation of the electric screwdriver, thereby realizing synchronization of the movement between the electric screwdrivers and avoiding the occurrence of incoordination between multiple electric screwdrivers.

[0015] Other advantages, objectives and features of the present invention will be described in part in the following description and will be apparent to those skilled in the art based on an examination of the following or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a partial three-dimensional structural diagram of the sliding side frame and the electric screwdriver of the utility model;

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the three-dimensional structure of A;

[0019] Figure 4 It is a partial three-dimensional structural diagram of the central driving frame and the partially cut-away three-dimensional structure of the hollow limiting shaft cylinder and the limiting sliding shaft of the utility model;

[0020] Figure 5 For this utility model Figure 4 Schematic diagram of the local three-dimensional structure of B;

[0021] Figure 6 It is a partially cutaway three-dimensional structural diagram of the hollow limiting shaft cylinder and the limiting sliding shaft of the utility model.

[0022] In the figure: 1. Adjusting side frame; 2. First motor; 201. Sliding side frame; 202. Lifting synchronization block; 203. Electric screwdriver; 204. Limiting slide; 205. Bidirectional screw rod; 3. Center driving frame; 301. Second motor; 302. Lifting driving slider; 303. Limiting slide groove; 304. One-way screw rod; 305. Hollow limiting shaft cylinder; 306. Limiting sliding shaft. DETAILED DESCRIPTION

[0023] 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.

[0024] like Figure 1-6 As shown, the utility model provides a technical solution: an adjustment bracket for assembling a range hood dish wing bracket, comprising an adjusting side frame 1, an outer wall of one side of the adjusting side frame 1 is fixedly connected to a first motor 2, and a group of sliding side frames 201 are slidably connected on both sides of the interior of the adjusting side frame 1, one side of the outer wall of the sliding side frame 201 is slidably connected to a lifting synchronization block 202, and the internal center of the lifting synchronization block 202 is fixedly connected to an electric screwdriver 203, one side of the outer wall of the sliding side frame 201 is slidably connected to the inner side of the adjusting side frame 1 through the first motor 2, and the internal center of the adjusting side frame 1 is simultaneously fixedly connected to a central driving frame 3, the internal top of the central driving frame 3 is fixedly connected to a second motor 301, and the outer wall center of the central driving frame 3 is slidably connected to a lifting driving slider 302, and the lifting driving slider 302 and the inner side of the lifting synchronization block 202 are slidably connected to the central driving frame 3 and one side of the outer wall of the sliding side frame 201 through the second motor 301.

[0025] By activating the first motor 2, the bidirectional screw rod 205 is driven to rotate in the center of the adjusting side frame 1. As the bidirectional screw rod 205 rotates, the bidirectional screw rod 205 can drive multiple sliding side frames 201 to move simultaneously along the outer wall of the limiting slide rod 204 toward the center or both sides of the adjusting side frame 1 through the outer wall thread, and then drive the sliding side frames 201 to move along the outer wall of the limiting slide rod 204 to achieve the horizontal position adjustment of the electric screwdriver 203. When the electric screwdriver 203 moves to the specified position, the first motor 2 at the top end of the central driving frame 3 is activated to drive the unidirectional screw rod 304 to rotate in the center of the central driving frame 3. The central driving frame 3 and the sliding side frame 201 outer walls are both provided with limiting slide grooves 303, and the lifting drive slider 302 and the lifting synchronization block 202 are vertically limited by the limiting slide grooves 303. As the unidirectional screw rod 304 rotates, its outer wall thread pushes the lifting drive slider 302 along the limiting slide When the lifting driving slider 302 moves, the lifting synchronous blocks 202 on both sides are driven to move synchronously through the cooperation between the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306. Thus, through the cooperation between the one-way screw rod 304, the limiting sliding groove 303, the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306, the lifting driving slider 302 can drive the multiple lifting synchronous blocks 202 on both sides of itself and the electric screwdriver 203 in its internal center to move vertically through the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306, further adjusting the orientation of the electric screwdriver 203, thereby realizing synchronization of the movements between the electric screwdrivers 203 and avoiding the incoordination between the multiple electric screwdrivers 203.

[0026] like Figure 1-4 As shown, both sides of the inner center of the adjusting side frame 1 are fixedly connected to the limit slide rods 204, and the limit slide rods 204 are located on both sides of the sliding side frame 201. The inner center of the limit slide rod 204 is rotatably connected with a bidirectional screw rod 205, and the bidirectional screw rod 205 is rotatably connected to the inner center of the adjusting side frame 1 through the outer wall of the output end of the first motor 2. The outer wall of one end of the bidirectional screw rod 205 is connected through a side of the inner wall of the adjusting side frame 1, and the outer wall of one end of the bidirectional screw rod 205 is connected through one side of the inner wall of the adjusting side frame 1 and is fixedly connected to the outer wall of the output end of the first motor 2. One end of the outer wall of the limit slide rod 204 is connected through a side of the outer wall of the sliding side frame 201, and the inner side of the sliding side frame 201 is slidably connected to one end of the outer wall of the limit slide rod 204. One end of the outer wall of the bidirectional screw rod 205 is connected through the center of the outer wall of the sliding side frame 201, and one end of the outer wall of the bidirectional screw rod 205 is rotatably connected to the inner center of the sliding side frame 201 through a thread.

[0027] By activating the first motor 2 on the outer wall of one side of the adjustment side frame 1, the output end of the first motor 2 rotates, driving the bidirectional screw rod 205 to rotate in the center of the inner side frame 1 of the adjustment side frame 1. In view of the fact that a plurality of limit slides 204 are fixed inside the adjustment side frame 1, and the limit slides 204 are connected through one side of the inner side of the sliding side frame 201, the limit function of the sliding side frame 201 is realized, so that the sliding side frame 201 can only move horizontally along the outer wall of the limit slide 204 when moving. As the bidirectional screw rod 205 rotates, the bidirectional screw rod 205 can move through the outer wall The threads drive the multiple sliding side frames 201 on both sides of the outer wall of the adjusting side frame 1 to move simultaneously along the outer wall of the limiting slide bar 204 toward the inner center or both sides of the adjusting side frame 1, and then drive the sliding side frames 201 to move along the outer wall of the limiting slide bar 204 to adjust the horizontal position of the electric screwdriver 203. Therefore, through the precise cooperation between the bidirectional screw rod 205 and the limiting slide bar 204, the horizontal position of the electric screwdriver 203 is precisely adjusted, which facilitates the subsequent further adjustment of the position of the electric screwdriver 203 by the device.

[0028] like Figure 1-6 As shown, both sides of the outer wall of the central driving frame 3 and the sliding side frame 201 are provided with a limiting slide groove 303, and one side of the outer wall of the central driving frame 3 and the sliding side frame 201 is slidably connected to the lifting driving slider 302 and the inner side of the lifting synchronization block 202 through the limiting slide groove 303 provided on their own outer wall, the lifting driving slider 302 and the lifting synchronization block 202 inner wall side are connected with the limiting slide groove 303 through and through, and the lifting driving slider 302 and the inner side of the lifting synchronization block 202 are slidably connected with the inner center of the limiting slide groove 303, the inner center of the central driving frame 3 is rotatably connected with a one-way screw rod 304, and the one-way screw rod 304 is output through the second motor 301. The end is rotatably connected to the internal center of the central driving frame 3, the outer wall of one end of the one-way screw rod 304 passes through the top of the inner wall of the central driving frame 3, and the center of the top surface of the one-way screw rod 304 passes through the top of the inner side of the central driving frame 3 and is fixedly connected to the output end of the second motor 301, the lifting synchronization block 202 is fixedly connected to the side close to the lifting driving slider 302 with a hollow limiting shaft cylinder 305, and one end of the hollow limiting shaft cylinder 305 is slidably connected to the limiting sliding shaft 306, the outer wall of the limiting sliding shaft 306 is fixedly connected to the outer wall of one side of the lifting driving slider 302 away from the end of the hollow limiting shaft cylinder 305, and the limiting sliding shaft 306 is located on both sides of the outer wall of the lifting driving slider 302.

[0029] When the electric screwdriver 203 moves to the specified position, the first motor 2 at the top of the central driving frame 3 is activated to drive the one-way screw rod 304 to rotate in the center of the central driving frame 3. Since the limiting grooves 303 are provided on both sides of the outer wall of the central driving frame 3 and the sliding side frame 201, and the lifting driving slider 302 and the lifting synchronization block 202 are vertically limited by the limiting grooves 303 respectively, the lifting driving slider 302 and the lifting synchronization block 202 can only move vertically along the inner wall of the limiting groove 303 when moving. After the displacement, as the one-way screw rod 304 rotates, the one-way screw rod 304 pushes the lifting drive slider 302 to move vertically along the limiting sliding grooves 303 on both sides of the outer wall of the central driving frame 3 through its own outer wall thread. At the same time, since the limiting sliding shaft 306 and the hollow limiting shaft cylinder 305 are respectively provided on the outer walls of the lifting drive slider 302 and the lifting synchronization block 202, the inner wall of the hollow limiting shaft cylinder 305 is sleeved on the outer wall of the limiting sliding shaft 306, and the inner wall of the hollow limiting shaft cylinder 305 and the outer wall of the limiting sliding shaft 306 fit together, The outer wall of the limiting sliding shaft 306 is connected to the inner center of the hollow limiting shaft cylinder 305 in a sliding manner, and then the lifting drive slider 302 and the lifting synchronization block 202 are synchronized through the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306. When the lifting drive slider 302 moves, the lifting synchronization blocks 202 on both sides of the outer wall can be driven to move vertically along the limiting sliding groove 303 by following the lifting drive slider 302, thereby 04. The mutual cooperation between the limiting slide groove 303, the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306 enables the lifting drive slider 302 to drive the multiple lifting synchronization blocks 202 on both sides of its exterior and the electric screwdriver 203 in its internal center to move vertically through the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306, and further adjust the orientation of the electric screwdriver 203, thereby realizing the synchronization of the movement between the electric screwdrivers 203, and avoiding the occurrence of incoordination between multiple electric screwdrivers 203.

[0030] Working principle: By activating the first motor 2 on the outer wall of one side of the adjusting side frame 1, the output end of the first motor 2 rotates, driving the bidirectional screw rod 205 to rotate in the inner center of the adjusting side frame 1. In view of the fact that multiple limiting slides 204 are fixed inside the adjusting side frame 1, and the limiting slide rod 204 is connected through one side of the inner side of the sliding side frame 201, the limiting function of the sliding side frame 201 is realized, so that the sliding side frame 201 can only move horizontally along the outer wall of the limiting slide rod 204 when moving. As the bidirectional screw rod 205 rotates, the bidirectional screw rod 205 can drive the multiple sliding side frames 201 on both sides of the outer wall of the adjusting side frame 1 along the outer wall of the limiting slide rod 204 at the same time toward the inner center or both sides of the adjusting side frame 1 through the outer wall thread. The lifting drive slider 302 and the lifting synchronization block 202 are vertically limited by the limiting slide grooves 303 respectively, so that the lifting drive slider 302 and the lifting synchronization block 202 can only be vertically displaced along the inner wall of the limiting slide groove 303 when moving. After that, as the one-way screw rod 304 rotates, the one-way screw rod 304 pushes the lifting drive slider 302 to move vertically along the limiting sliding grooves 303 on both sides of the outer wall of the central driving frame 3 through its own outer wall thread. At the same time, since the limiting sliding shaft 306 and the hollow limiting shaft cylinder 305 are respectively provided on the outer walls of the lifting drive slider 302 and the lifting synchronization block 202, the inner wall of the hollow limiting shaft cylinder 305 is sleeved on the outer wall of the limiting sliding shaft 306, and the inner wall of the hollow limiting shaft cylinder 305 and the outer wall of the limiting sliding shaft 306 fit together, so that one end of the outer wall of the limiting sliding shaft 306 is slidably connected to the inner center of the hollow limiting shaft cylinder 305, and then the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306 are aligned. The lifting drive slider 302 and the lifting synchronization block 202 are synchronized. When the lifting drive slider 302 moves, the lifting synchronization blocks 202 on both sides of the outside can be driven by the action of the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306, and at the same time follow the lifting drive slider 302 to move vertically along the limiting slide groove 303. Therefore, through the mutual cooperation between the one-way screw rod 304, the limiting slide groove 303, the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306, the lifting drive slider 302 can drive multiple lifting synchronization blocks 202 on both sides of its outside and the electric screwdriver 203 in its internal center to move vertically through the hollow limiting shaft cylinder 305 and the limiting sliding shaft 306.

[0031] 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 these 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. An adjustment bracket for assembling a range hood disc wing bracket, comprising an adjustment side bracket (1), characterized in that: The outer wall of one side of the adjustment side frame (1) is fixedly connected to a first motor (2), and both sides of the interior of the adjustment side frame (1) are slidably connected to a group of sliding side frames (201), one side of the outer wall of the sliding side frame (201) is slidably connected to a lifting synchronization block (202), and the center of the lifting synchronization block (202) is fixedly connected to an electric screwdriver (203), one side of the outer wall of the sliding side frame (201) is slidably connected to the inner side of the adjustment side frame (1) through the first motor (2), and the inner center of the adjustment side frame (1) is simultaneously fixedly connected to a central driving frame (3), the inner top of the central driving frame (3) is fixedly connected to a second motor (301), and the outer wall center of the central driving frame (3) is slidably connected to a lifting driving slider (302), and the lifting driving slider (302) and the inner side of the lifting synchronization block (202) are respectively slidably connected to the central driving frame (3) and the outer wall side of the sliding side frame (201) through the second motor (301).

2. The adjustment bracket for assembling a range hood disc wing bracket according to claim 1, characterized in that: The regulating side frame (1) has both sides of an inner center fixedly connected to limit slide bars (204), and the limit slide bars (204) are located on both sides of the inner center of the sliding side frame (201). The inner center of the limit slide bar (204) is rotatably connected to a bidirectional screw rod (205), and the bidirectional screw rod (205) is rotatably connected to the inner center of the regulating side frame (1) through the outer wall of the output end of the first motor (2).

3. The adjustment bracket for assembling a range hood disc wing bracket according to claim 2, characterized in that: The outer wall of one end of the bidirectional screw rod (205) is connected to one side of the inner wall of the adjustment side frame (1), and the outer wall of one end of the bidirectional screw rod (205) is connected to the inner side of the adjustment side frame (1) and is fixedly connected to the outer wall of the output end of the first motor (2); the outer wall of one end of the limiting slide rod (204) is connected to one side of the outer wall of the sliding side frame (201), and the inner side of the sliding side frame (201) is connected to one end of the outer wall of the limiting slide rod (204) in a sliding manner.

4. The adjustment bracket for assembling a range hood disc wing bracket according to claim 3, characterized in that: One end of the outer wall of the bidirectional screw rod (205) is connected to the center of the outer wall of the sliding side frame (201) through the thread, and one end of the outer wall of the bidirectional screw rod (205) is connected to the inner center of the sliding side frame (201) through the thread.

5. The adjustment bracket for assembling a range hood disc wing bracket according to claim 1, characterized in that: Both sides of the outer walls of the central driving frame (3) and the sliding side frame (201) are provided with limiting sliding grooves (303), and one side of the outer walls of the central driving frame (3) and the sliding side frame (201) are slidably connected to the inner side of the lifting driving slider (302) and the lifting synchronization block (202) through the limiting sliding grooves (303) provided on their own outer walls, one side of the inner wall of the lifting driving slider (302) and the lifting synchronization block (202) is connected with the limiting sliding grooves (303) through and through, and one side of the inner side of the lifting driving slider (302) and the lifting synchronization block (202) is slidably connected to the inner center of the limiting sliding grooves (303).

6. The adjustment bracket for assembling a range hood disc wing bracket according to claim 5, characterized in that: The center of the central driving frame (3) is rotatably connected to a one-way screw rod (304), and the one-way screw rod (304) is rotatably connected to the center of the central driving frame (3) through the output end of the second motor (301), the outer wall of one end of the one-way screw rod (304) passes through the top end of the inner wall of the central driving frame (3), and the center of the top surface of the one-way screw rod (304) passes through the top end of the central driving frame (3) and is fixedly connected to the output end of the second motor (301).

7. The adjustment bracket for assembling a range hood disc wing bracket according to claim 5, characterized in that: The lifting synchronization block (202) is fixedly connected to a hollow limiting shaft cylinder (305) on one side close to the lifting drive slider (302), and one end inside the hollow limiting shaft cylinder (305) is slidably connected to a limiting sliding shaft (306), and the outer wall of the limiting sliding shaft (306) is fixedly connected to the outer wall of one side of the lifting drive slider (302) at one end away from the hollow limiting shaft cylinder (305), and the limiting sliding shaft (306) is located on both sides of the outer wall of the lifting drive slider (302).

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