Cleaning device for electric vehicle magnesium alloy handle production

Abstract

The invention provides a cleaning device for electric vehicle magnesium alloy handle production, and relates to the technical field of cleaning devices. The device comprises a shell, a rail is fixedly connected to the inner side of the shell, a rack is arranged on the upper surface of the rail, and an ultrasonic cleaning tank and a water washing tank are fixedly connected to the position, below the rail, in the shell; limiting plates are fixedly connected to the positions, located above the ultrasonic cleaning tank and the water washing tank, of the inner side surface of the shell correspondingly. By arranging a torsional spring and a second gear, the fixed square block can be driven to rotate during cleaning so that the fixed square block can be cleaned more uniformly, follow-up operation is facilitated by returning to the original position through the torsional spring after cleaning, the brake handle is rapidly limited through an arranged limiting clamping block, the grabbing efficiency is improved, and the labor intensity of workers is reduced. And through cooperation of a limiting clamping block and a limiting plate, during cleaning, the material taking device is pressed into the box body for more efficient cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of cleaning devices, and particularly to a cleaning device for the production of magnesium alloy handles of electric vehicles. Background Art

[0002] The magnesium alloy handle of an electric vehicle is a key component for controlling and supporting an electric vehicle. The handle of an electric vehicle made of magnesium alloy material is an important component for a driver to operate an electric vehicle, mainly used for controlling the vehicle speed and direction. The magnesium alloy handle has a good grip, provides comfortable hand support, and improves the riding experience. The handle is not only used for control but also provides stable support, enabling the rider to ride safely and comfortably. Magnesium alloy can be easily designed into a streamlined appearance, enhancing the overall appearance of the electric vehicle. The lightness and firmness of the magnesium alloy handle of an electric vehicle meet the needs of daily travel and improve the overall riding experience. For high-performance electric vehicles, the magnesium alloy handle can provide excellent strength and lightweight design, supporting high-speed driving and complex maneuvers. Due to its advantages such as light weight, corrosion resistance, and high strength, the magnesium alloy handle of an electric vehicle has become an indispensable component in modern electric vehicles. It not only improves the performance of the electric vehicle but also brings a better riding experience and higher design freedom.

[0003] The existing cleaning work of the electric vehicle handle is to place the handle in individual cleaning devices for cleaning, which requires multiple processes. During the transfer of the handle through each such cleaning method, accidents such as the handle falling may occur, resulting in part damage. Moreover, as disclosed in the utility model patent with the publication number CN221361664U, a cleaning device is disclosed, which drives components for cleaning by using a six-axis robot. This method requires multiple motors to cooperate to clamp parts, and a certain reaction speed is required when clamping the component, and it is impossible to grab parts immediately, resulting in low efficiency. Summary of the Invention

[0004] (I) Technical Problems to be Solved In view of the deficiencies of the prior art, the present invention provides a cleaning device for the production of magnesium alloy handles of electric vehicles, which solves the problems of slow clamping of components and easy occurrence of accidents during the handover of multiple processes.

[0005] (II) Technical Solutions To achieve the above object, the present invention is realized by the following technical solutions: A cleaning device for the production of magnesium alloy handles of electric vehicles, including a housing, wherein an inner side of the housing is fixedly connected with a track, an upper surface of the track is provided with a rack, an ultrasonic cleaning tank and a water washing tank are fixedly connected below the track inside the housing, limiting plates are fixedly connected to inner side surfaces of the housing at positions above the ultrasonic cleaning tank and the water washing tank respectively, tooth plates are fixedly connected to a lower surface of the track at positions above the ultrasonic cleaning tank and the water washing tank respectively, a drying device is fixedly connected to an inner side surface of the housing at a right end of the water washing tank, a pushing device is arranged on an inner side surface of the housing near the right end, a material taking device is arranged at a lower end of the pushing device on the inner side surface of the housing, a feeding device is arranged at a lower position of the material taking device on the inner side surface of the housing, and a placing groove is fixedly connected to an inner side surface of the housing at a right end of the feeding device.

[0006] Preferably, the pushing device includes a cylinder, a moving plate, a downward moving plate, a first moving rod and a second moving rod. The cylinder is fixedly connected to the inner side surface of the housing. An upper surface of the moving plate is fixedly connected to an output end of the cylinder. The moving plate is slidably connected to the inner side surface of the housing. Upper surfaces of the downward moving plate and the second moving rod are fixedly connected to a lower surface of the moving plate. A side surface of the downward moving plate is fixedly connected to the first moving rod.

[0007] Preferably, the feeding device includes a sliding groove, a loading box, a brake handle, a moving inclined block, a pushing groove, a rolling rod, a fixed block, a first sliding rod, a first spring and a collecting groove. The rolling rod is rotatably connected to a side surface of the first moving rod. The sliding groove and the fixed block are fixedly connected to the inner side surface of the housing. The loading box is slidably placed on an upper surface of the sliding groove. The brake handle is placed on an inner side surface of the loading box. The moving inclined block is slidably connected to an inner side surface of the sliding groove. Preferably, one end of the first sliding rod is fixedly connected to a side surface of the moving inclined block, and the other end of the first sliding rod is slidably connected to an inner side surface of the fixed block. The first spring is sleeved on a side surface of the first sliding rod. One end of the first spring is fixedly connected to a side surface of the moving inclined block, and the other end of the first spring is fixedly connected to an inner side surface of the fixed block.

[0008] Preferably, the material taking device includes a moving vehicle, a first gear, a fixed square block, a second gear, a limiting circular plate, a torsion spring, a rotating circular rod, a second spring, a limiting rod, a second sliding rod, a fixed bracket, a limiting clamping block, a limiting inclined block, a third sliding rod and a third spring. A motor is arranged inside the moving vehicle. An output end of the motor is fixedly connected to a side surface of the first gear. The first gear is rotatably connected to a side surface of the moving vehicle. The first gear is meshed with an upper surface of the track. The moving vehicle is slidably connected to the upper surface of the track through the first gear. Preferably, the limiting circular plate is fixedly connected to the side surface of the rotating circular rod, the lower end of the torsion spring is fixedly connected to the upper surface of the limiting circular plate, the upper end of the torsion spring is fixedly connected to the inner surface of the moving vehicle, the rotating circular rod is rotatably connected to the inner surface of the moving vehicle through the limiting circular plate, the upper end of the second gear is fixedly connected to the lower end of the rotating circular rod, the fixed square block is fixedly connected to the lower end of the second gear, the upper end of the limiting rod is slidably connected to the inner surface of the fixed square block, the lower end of the limiting rod is fixedly connected to the upper surface of the fixed bracket, and the upper end of the second sliding rod is slidably connected to the inner surface of the fixed square block. Preferably, the lower end of the second sliding rod is fixedly connected to the upper surface of the fixed bracket, the second spring is sleeved on the side surface of the second sliding rod, the upper end of the second spring is fixedly connected to the lower surface of the fixed square block, the lower end of the second spring is fixedly connected to the upper surface of the fixed bracket, the limiting clamping block is slidably connected to the inner surface of the fixed bracket, one end of the third sliding rod is fixedly connected to the side surface of the limiting clamping block, the third spring is sleeved on the side surface of the third sliding rod, one end of the third spring is fixedly connected to the inner surface of the fixed bracket, and the other end of the third spring is fixedly connected to the side surface of the limiting clamping block.

[0009] Working principle: Place the brake handle in the loading box, then place the loading box on the sliding groove. The sliding groove is externally connected to an inclined chute to facilitate the loading box to slide down to the side of the moving wedge. Then start the cylinder to drive the moving plate to move downward, thereby driving the lower moving plate and the first moving rod to move downward. The downward movement of the first moving rod drives the rolling rod to move the moving wedge to the left through the inclined surface provided on the moving wedge. At this time, the loading box is slid down by the gravity of the same loading box at the rear to the lower part of the limit clamping block. Then the lower moving plate moves above the limit clamping block, presses the fixed bracket downward to move and contact the brake handle, and presses the round head on the brake handle between the limit clamping blocks through the inclined surface provided on the limit clamping block. When pressing, the limit clamping block moves backward. Then, after the upper end of the brake handle passes through the protrusion in the middle of the limit clamping block, the limit clamping block advances toward the middle under the action of the third spring and the third sliding rod to limit the brake handle. Then start the cylinder to pull the moving plate back to its original position, and the fixed bracket is also pulled upward to its original position through the second sliding rod and the second spring, thereby pulling the brake handle out of the loading box. And when the moving plate returns to its original position, the rolling rod moves upward, and the moving wedge also returns to its original position through the first sliding rod and the first spring, thereby pushing the loading box to the collection tank for collection. The next loading box on the sliding groove moves to contact the side surface of the moving wedge. Then start the motor in the moving vehicle to drive the first gear to rotate, thereby driving the moving vehicle to move on the track. When the moving vehicle moves above the ultrasonic cleaning tank, the inclined surface of the limit clamping block contacts the inclined surface provided on the limit plate, pulls the fixed bracket downward into the ultrasonic cleaning tank, and starts the ultrasonic cleaning tank to clean the brake handle. At the same time, the second gear contacts the toothed plate for meshing to drive the fixed square to rotate to prevent uneven cleaning. Then the material taking device leaves the limit plate, and the fixed square returns to its original position under the action of the torsion spring. Then it is washed again through the water washing tank, and the material taking device performs the same operation. Then it moves into the drying device for drying, and then moves above the placement tank. Start the cylinder to drive the second moving rod to move downward, press the fixed bracket downward through the limit clamping block, and the limit inclined block contacts the upper end of the placement tank. Then the placement tank moves the limit clamping block backward through the inclined surface of the limit inclined block to release the limit on the brake handle, and it falls into the middle of the placement tank for collection. Then the cylinder drives the moving plate back to its original position, and the moving vehicle starts to drive the fixed square back to its original position to repeat the operation.

[0010] (III) Beneficial effects The present invention provides a cleaning device for the production of magnesium alloy handles of electric vehicles. It has the following beneficial effects: 1. By setting the torsion spring and the second gear, the fixed square can drive the fixed square to rotate during cleaning to make the cleaning more uniform, and it returns to its original position through the torsion spring after cleaning, which is convenient for subsequent operations.

[0011] 2. By setting the limit clamping block to quickly limit the brake handle, the grasping efficiency is improved.

[0012] 3. During cleaning, through the cooperation of the set limit clamping blocks and limit plates, the material taking device is pressed into the box body to clean the brake handle more efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention; Figure 2 It is a schematic diagram of the internal structure of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention; Figure 3 It is a schematic diagram of the structure of the pushing device of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention; Figure 4 It is a schematic diagram of the structure of the feeding device of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention Figure 1 ; Figure 5 It is a schematic diagram of the structure of the feeding device of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention Figure 2 ; Figure 6 It is a schematic diagram of the structure of the material taking device of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention Figure 1 ; Figure 7 It is a schematic diagram of the structure of the material taking device of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention Figure 2 ; Figure 8 It is a schematic diagram of the structure of the material taking device of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention Figure 3 ; Figure 9 It is a schematic diagram of the structure of the material taking device of a cleaning device for the production of magnesium alloy handles of electric vehicles proposed by the present invention Figure 4 .

[0014] Among them, 1. housing; 2. placement groove; 3. feeding device; 301. sliding groove; 302. loading box; 303. brake handle; 304. moving inclined block; 305. pushing groove; 306. rolling rod; 307. fixed block; 308. first sliding rod; 309. first spring; 310. collection groove; 4. material taking device; 401. moving vehicle; 402. first gear; 403. fixed square block; 404. second gear; 405. limiting circular plate; 406. torsion spring; 407. rotating circular rod; 408. second spring; 409. limiting rod; 410. second sliding rod; 411. fixed bracket; 412. limiting clamping block; 413. limiting inclined block; 414. third sliding rod; 415. third spring; 5. ultrasonic cleaning tank; 6. pushing device; 601. cylinder; 602. moving plate; 603. downward moving plate; 604. first moving rod; 605. second moving rod; 7. track; 8. water washing tank; 9. limiting plate; 10. toothed plate; 11. drying equipment. Detailed implementation manner

[0015] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0016] As Figures 1-9 shown, the embodiment of the present invention provides a cleaning device for the production of magnesium alloy handles of electric vehicles, including a housing 1. The inner side of the housing 1 is fixedly connected with a track 7. The upper surface of the track 7 is provided with a rack. Inside the housing 1 and below the track 7, an ultrasonic cleaning tank 5 and a water washing tank 8 are fixedly connected. Limiting plates 9 are fixedly connected to the inner side surfaces of the housing 1 at positions above the ultrasonic cleaning tank 5 and the water washing tank 8 respectively. Toothed plates 10 are fixedly connected to the lower surface of the track 7 at positions above the ultrasonic cleaning tank 5 and the water washing tank 8 respectively. A drying device 11 is fixedly connected to the inner side surface of the housing 1 at the right end of the water washing tank 8. A pushing device 6 is arranged on the inner side surface of the housing 1 near the right end. A material taking device 4 is arranged on the inner side surface of the housing 1 below the pushing device 6. A feeding device 3 is arranged on the inner side surface of the housing 1 below the material taking device 4. A placement groove 2 is fixedly connected to the inner side surface of the housing 1 at the right end of the feeding device 3.

[0017] The ultrasonic cleaning tank 5 is an existing device filled with a neutral cleaning agent, which removes dirt and grease on the surface of an object through tiny bubbles generated by high-frequency sound waves. The water washing tank 8 is an existing device with a high-pressure flushing device inside. By spraying high-pressure clean water, fine particles are further cleaned to ensure the surface is clean.

[0018] The driving device 6 includes a cylinder 601, a moving plate 602, a downward moving plate 603, a first moving rod 604 and a second moving rod 605. The cylinder 601 is fixedly connected to the inner surface of the housing 1. The upper surface of the moving plate 602 is fixedly connected to the output end of the cylinder 601. The moving plate 602 is slidably connected to the inner surface of the housing 1. The upper surfaces of the downward moving plate 603 and the second moving rod 605 are fixedly connected to the lower surface of the moving plate 602. The side surface of the downward moving plate 603 is fixedly connected with the first moving rod 604.

[0019] The feeding device 3 includes a sliding groove 301, a loading box 302, a brake handle 303, a moving inclined block 304, a pushing groove 305, a rolling rod 306, a fixing block 307, a first sliding rod 308, a first spring 309 and a collecting groove 310. The rolling rod 306 is rotatably connected to the side surface of the first moving rod 604. The sliding groove 301 and the fixing block 307 are fixedly connected to the inner surface of the housing 1. The loading box 302 is slidably placed on the upper surface of the sliding groove 301. The brake handle 303 is placed on the inner surface of the loading box 302. The moving inclined block 304 is slidably connected to the inner surface of the sliding groove 301. One end of the first sliding rod 308 is fixedly connected to the side surface of the moving inclined block 304. The other end of the first sliding rod 308 is slidably connected to the inner surface of the fixing block 307. The first spring 309 is sleeved on the side surface of the first sliding rod 308. One end of the first spring 309 is fixedly connected to the side surface of the moving inclined block 304. The other end of the first spring 309 is fixedly connected to the inner surface of the fixing block 307.

[0020] The sliding groove 301 is externally connected with an inclined plane slideway, and multiple loading boxes 302 slide onto the sliding groove 301 through the inclined plane slideway to keep the loading boxes 302 in a mutually extruded state. When the moving inclined block 304 moves away, the loading box 302 is pushed by the rear loading box 302 under the limit clamping block 412 to maintain automatic operation. The brake handle 303 slides through the inclined plane provided on the limit clamping block 412 to the upper part of the inner protrusion of the limit clamping block 412 for limiting. The drying device 11 is an existing device that dries the surface of the brake handle 303 by blowing hot air. The round head on the brake handle 303 is the round head at the top of the brake part of the electric vehicle handle for convenient clamping. The cylinder 601 is an existing device.

[0021] The material taking device 4 includes a moving vehicle 401, a first gear 402, a fixed square block 403, a second gear 404, a limiting circular plate 405, a torsion spring 406, a rotating circular rod 407, a second spring 408, a limiting rod 409, a second sliding rod 410, a fixed bracket 411, a limiting clamping block 412, a limiting inclined block 413, a third sliding rod 414 and a third spring 415. A motor is arranged inside the moving vehicle 401, and the output end of the motor is fixedly connected to the side surface of the first gear 402. The first gear 402 is rotatably connected to the side surface of the moving vehicle 401. The first gear 402 is meshed with the upper surface of the track 7. The moving vehicle 401 is slidably connected to the upper surface of the track 7 through the first gear 402. The limiting circular plate 405 is fixedly connected to the side surface of the rotating circular rod 407. The lower end of the torsion spring 406 is fixedly connected to the upper surface of the limiting circular plate 405. The upper end of the torsion spring 406 is fixedly connected to the inner side surface of the moving vehicle 401. The rotating circular rod 407 is rotatably connected to the inner side surface of the moving vehicle 401 through the limiting circular plate 405. The upper end of the second gear 404 is fixedly connected to the lower end of the rotating circular rod 407. The fixed square block 403 is fixedly connected to the lower end of the second gear 404. The upper end of the limiting rod 409 is slidably connected to the inner side surface of the fixed square block 403. The lower end of the limiting rod 409 is fixedly connected to the upper surface of the fixed bracket 411. The upper end of the second sliding rod 410 is slidably connected to the inner side surface of the fixed square block 403. The lower end of the second sliding rod 410 is fixedly connected to the upper surface of the fixed bracket 411. The second spring 408 is sleeved on the side surface of the second sliding rod 410. The upper end of the second spring 408 is fixedly connected to the lower surface of the fixed square block 403. The lower end of the second spring 408 is fixedly connected to the upper surface of the fixed bracket 411. The limiting clamping block 412 is slidably connected to the inner side surface of the fixed bracket 411. One end of the third sliding rod 414 is fixedly connected to the side surface of the limiting clamping block 412. The third spring 415 is sleeved on the side surface of the third sliding rod 414. One end of the third spring 415 is fixedly connected to the inner side surface of the fixed bracket 411. The other end of the third spring 415 is fixedly connected to the side surface of the limiting clamping block 412. When the torsion spring 406 leaves the toothed plate 10 and rotates to its original position, the placement groove 2 is aligned for convenient material discharging.

[0022] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cleaning device for producing magnesium alloy handles of electric vehicles, comprising a housing (1), characterized in that: A track (7) is fixedly connected to the inner side of the housing (1), a rack is provided on the upper surface of the track (7), an ultrasonic cleaning tank (5) and a water washing tank (8) are fixedly connected to the interior of the housing (1) below the track (7), a limit plate (9) is fixedly connected to the inner surface of the housing (1) above the ultrasonic cleaning tank (5) and the water washing tank (8), and a tooth plate (10) is fixedly connected to the lower surface of the track (7) above the ultrasonic cleaning tank (5) and the water washing tank (8). A drying device (11) is fixedly connected to the inner surface of the shell (1) at the right end of the washing tank (8), a pushing device (6) is provided on the inner surface of the shell (1) near the right end, a material taking device (4) is provided on the inner surface of the shell (1) at the lower end of the pushing device (6), a feeding device (3) is provided on the inner surface of the shell (1) at the lower end of the feeding device (4), and a placement tank (2) is fixedly connected to the inner surface of the shell (1) at the right end of the feeding device (3).

2. The cleaning device for producing magnesium alloy handles for electric vehicles according to claim 1, characterized in that: The pushing device (6) comprises a cylinder (601), a moving plate (602), a lower moving plate (603), a first moving rod (604) and a second moving rod (605); the cylinder (601) is fixedly connected to the inner surface of the shell (1); the upper surface of the moving plate (602) is fixedly connected to the output end of the cylinder (601); the moving plate (602) is slidably connected to the inner surface of the shell (1); the upper surfaces of the lower moving plate (603) and the second moving rod (605) are fixedly connected to the lower surface of the moving plate (602); and the side surface of the lower moving plate (603) is fixedly connected to the first moving rod (604).

3. The cleaning device for producing magnesium alloy handles for electric vehicles according to claim 1, characterized in that: The feeding device (3) comprises a sliding groove (301), a loading box (302), a brake handle (303), a movable inclined block (304), a pushing groove (305), a rolling rod (306), a fixed block (307), a first sliding rod (308), a first spring (309) and a collecting groove (310), wherein the rolling rod (306) is rotatably connected to the side surface of the first moving rod (604), the sliding groove (301) and the fixed block (307) are fixedly connected to the inner surface of the shell (1), the loading box (302) is slidably placed on the upper surface of the sliding groove (301), the brake handle (303) is placed on the inner surface of the loading box (302), and the movable inclined block (304) is slidably connected to the inner surface of the sliding groove (301).

4. The cleaning device for producing magnesium alloy handles for electric vehicles according to claim 3, characterized in that: One end of the first sliding rod (308) is fixedly connected to the side surface of the movable inclined block (304), and the other end of the first sliding rod (308) is slidably connected to the inner surface of the fixed block (307). The first spring (309) is sleeved on the side surface of the first sliding rod (308), and one end of the first spring (309) is fixedly connected to the side surface of the movable inclined block (304), and the other end of the first spring (309) is fixedly connected to the inner surface of the fixed block (307).

5. The cleaning device for producing magnesium alloy handles for electric vehicles according to claim 1, characterized in that: The material taking device (4) comprises a moving vehicle (401), a first gear (402), a fixed block (403), a second gear (404), a limiting circular plate (405), a torsion spring (406), a rotating round rod (407), a second spring (408), a limiting rod (409), a second sliding rod (410), a fixed bracket (411), a limiting clamping block (412), a limiting inclined block (413), a third sliding rod (414) and a third spring (415). A motor is arranged inside the moving vehicle (401), an output end of the motor is fixedly connected to a side surface of the first gear (402), the first gear (402) is rotatably connected to the side surface of the moving vehicle (401), the first gear (402) is meshedly connected to an upper surface of a track (7), and the moving vehicle (401) is slidably connected to the upper surface of the track (7) via the first gear (402).

6. The cleaning device for producing magnesium alloy handles for electric vehicles according to claim 5, characterized in that: The limiting circular plate (405) is fixedly connected to the side surface of the rotating circular rod (407), the lower end of the torsion spring (406) is fixedly connected to the upper surface of the limiting circular plate (405), the upper end of the torsion spring (406) is fixedly connected to the inner surface of the moving vehicle (401), the rotating circular rod (407) is rotatably connected to the inner surface of the moving vehicle (401) through the limiting circular plate (405), the upper end of the second gear (404) is fixedly connected to the lower end of the rotating circular rod (407), the fixed block (403) is fixedly connected to the lower end of the second gear (404), the upper end of the limiting rod (409) is slidably connected to the inner surface of the fixed block (403), the lower end of the limiting rod (409) is fixedly connected to the upper surface of the fixed bracket (411), and the upper end of the second sliding rod (410) is slidably connected to the inner surface of the fixed block (403).

7. The cleaning device for producing magnesium alloy handles for electric vehicles according to claim 5, characterized in that: The lower end of the second sliding rod (410) is fixedly connected to the upper surface of the fixed bracket (411), the second spring (408) is sleeved on the side surface of the second sliding rod (410), the upper end of the second spring (408) is fixedly connected to the lower surface of the fixed block (403), the lower end of the second spring (408) is fixedly connected to the upper surface of the fixed bracket (411), the limiting clamp (412) is slidably connected to the inner surface of the fixed bracket (411), one end of the third sliding rod (414) is fixedly connected to the side surface of the limiting clamp (412), the third spring (415) is sleeved on the side surface of the third sliding rod (414), one end of the third spring (415) is fixedly connected to the inner surface of the fixed bracket (411), and the other end of the third spring (415) is fixedly connected to the side surface of the limiting clamp (412).

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