Motorcycle frame surface automatic slinging equipment
By introducing high-pressure airflow cleaning components and rotary moving components into the automatic sand casting equipment on the motorcycle frame surface, the problem of the equipment not being able to throw sand in all directions and the frame is prone to fall off, achieving efficient and low-cost sand casting and cleaning effects.
Patent Information
- Application Number
- CN202422193856.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing automatic sand-dumping equipment on the surface of motorcycle frames cannot carry out all-round sand-dumping treatment on the frame, resulting in high equipment costs and the frame is prone to fall off during the sand-dumping process, which affects the sand-dumping effect and the anti-corrosion performance of the frame.
A motorcycle frame automatic sand casting equipment is designed, using high-pressure airflow cleaning components and rotary moving components, and the reciprocating screw and bevel gear system is driven by the motor to achieve all-round sand casting and high-pressure airflow cleaning of the frame.
The all-round sand-throwing treatment of the motorcycle frame is realized, which reduces equipment costs and avoids the problem of frame falling off. The subsequent cleaning work is reduced through high-pressure airflow cleaning components and reduces labor costs.
Smart Images
Figure CN222986687U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sand blasting, in particular to an automatic sand blasting device for the surface of a motorcycle frame. Background Art
[0002] Sand blasting machines are widely used in the surface cleaning or strengthening treatment of medium and small-sized castings and forgings in industries such as casting, construction, chemical industry, electric motors, and machine tools. When sand blasting some special-shaped workpieces such as crankshafts, a carrier is needed to load the special-shaped workpiece into the sand blasting cleaning chamber, and then the sand blasting machine is used to throw the sand pellets onto the surface of the workpiece, so that the surface of the workpiece reaches a certain roughness, making the workpiece beautiful or changing the compressive stress of the workpiece to improve its service life. The following problems exist in the prior art:
[0003] In the existing automatic sand blasting device for the surface of a motorcycle frame, during use, since the frame cannot rotate on the hanging rack, it is impossible to perform all-round sand blasting treatment on the frame. Therefore, multiple groups of nozzles at different angles need to be set for processing, otherwise the overall sand blasting effect of the frame will be affected, greatly increasing the equipment cost of sand blasting; in addition, in the existing equipment, during use, the frame on the hook cannot be effectively locked, resulting in the frame being easily detached during the sand blasting process; after the existing device polishes the frame, the sand will remain in the gaps of the frame. When the frame is subsequently painted, the remaining sand will damage the uniformity and adhesion of the frame coating, resulting in the coating being easily peeled off or cracked, affecting the anti-corrosion performance and durability of the frame. At the same time, workers also need to clean the sand on the frame subsequently, increasing the labor cost. Summary of the Utility Model
[0004] The utility model provides an automatic sand blasting device for the surface of a motorcycle frame to solve the problems raised in the above background art.
[0005] To solve the above technical problems, the technical solution adopted by the utility model is:
[0006] An automatic sand blasting device for the surface of a motorcycle frame, comprising a sand blasting box. Four corners of the bottom of the sand blasting box are fixedly connected with legs. Two symmetrically arranged sealing doors are hinged on the front side of the sand blasting box. A sand blasting machine is fixedly connected above the rear side wall of the sand blasting box. The output end of the sand blasting machine penetrates into the interior of the sand blasting box and is fixedly connected with a sand blasting nozzle. A rotary moving component is arranged above the interior of the sand blasting box. The bottom of the rotary moving component is fixedly connected with a plurality of frame hook locking components evenly distributed at equal intervals from left to right. A high-pressure air flow cleaning component is arranged below the interior of the sand blasting box.
[0007] The further improvement of the technical solution of the utility model lies in that: the high-pressure air flow cleaning component includes a reciprocating lead screw, the reciprocating lead screw is rotatably connected to the lower part inside the sand blasting box, a first motor is fixedly connected to the lower part of the left side wall of the sand blasting box, the left end of the reciprocating lead screw penetrates through the left outer wall of the sand blasting box and is fixedly connected to the output end of the first motor, a slide bar fixedly connected to the inner wall of the sand blasting box is arranged below the reciprocating lead screw, a moving seat threadedly connected to the outer wall of the reciprocating lead screw and slidably connected to the outer wall of the slide bar is arranged below the reciprocating lead screw, a high-pressure air pump is fixedly connected to the lower part of the rear side wall of the sand blasting box, a telescopic hose is fixedly connected to the top air outlet of the high-pressure air pump, one end of the telescopic hose far away from the high-pressure air pump penetrates into the sand blasting box and is fixedly connected to the moving seat, and a high-pressure spray head is fixedly connected to the front side wall of the moving seat.
[0008] The further improvement of the technical solution of the utility model lies in that: the rotary moving component includes two guide rails, a plurality of sliders are slidably connected to the opposite surfaces of the front and rear guide rails, fixed frames are fixedly connected to the bottoms of the plurality of sliders, electric telescopic rods are fixedly connected between two adjacent fixed frames on the left and right, second motors are fixedly connected to the rear side walls of the plurality of fixed frames, a rack is fixedly connected to the top of the rear guide rail, rotary rods are rotatably connected to the tops of the plurality of sliders, gears meshed with the rack are fixedly connected to the tops of the plurality of rotary rods, the bottoms of the rotary rods penetrate through the inner top walls of the fixed frames and are fixedly connected to bevel gears I, bevel gears II are meshed with the rear sides of the bevel gears I, the rear ends of the bevel gears II penetrate through the rear outer walls of the fixed frames and are fixedly connected to the output ends of the second motors, bevel gears III are meshed with the bottoms of the bevel gears II, and rotary shafts rotatably connected to the fixed frames are fixedly connected to the bottoms of the bevel gears III.
[0009] The further improvement of the technical solution of the utility model lies in that: the vehicle frame hook locking component includes a connecting frame, a moving block is slidably connected to the inside of the connecting frame, the bottom of the rotary shaft penetrates through the bottom wall of the fixed frame and is fixedly connected to the top of the connecting frame, a lifting rod is fixedly connected to the bottom of the moving block, the bottom of the lifting rod penetrates through the bottom wall of the connecting frame and is fixedly connected to a hook, a spring is sleeved on the outer wall of the lifting rod, and the upper and lower ends of the spring are respectively fixedly connected to the bottom of the moving block and the inner bottom wall of the connecting frame.
[0010] A further improvement of the technical solution of the present utility model lies in that: a handle is fixedly connected to the bottom of the hook, a circular groove hole 1 is provided on the outer wall of the hook, a fixing plate is fixedly connected to the bottom of the left side wall of the connecting frame, a circular groove hole 2 adapted to the diameter of the hook is provided on the top of the fixing plate, two front and rear symmetric side plates are fixedly connected to the top of the fixing plate, circular groove holes 3 adapted to the size of the circular groove hole 1 are provided on the opposite surfaces of the front and rear two side plates, the front and rear two side plates are inserted with screws through the provided circular groove holes 3, and the rear end of the screw penetrates through the rear side wall of the rear side plate and is threadedly connected with a nut.
[0011] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:
[0012] 1. The present utility model provides an automatic sand blasting device for the surface of a motorcycle frame. The provided high-pressure air flow cleaning component drives the reciprocating screw rod to rotate through the first motor, so that the moving seat moves left and right along the reciprocating screw rod under the guiding action of the sliding rod. At the same time, the high-pressure air pump works, and the high-pressure gas is conveyed to the high-pressure nozzle through the telescopic hose. The high-pressure nozzle cleans the surface of the frame with high-pressure air flow as it moves, blowing away the residual sand grains and other impurities on the surface of the motorcycle frame, avoiding the problem that when the motorcycle frame is subsequently painted, the residual sand and gravel damage the uniformity and adhesion of the frame coating, resulting in the peeling or cracking of the coating, and at the same time reducing the subsequent cleaning work of the frame by workers and reducing the labor cost.
[0013] 2. The present utility model provides an automatic sand blasting device for the surface of a motorcycle frame. The provided rotary moving component drives the second bevel gear to rotate through the second motor. The second bevel gear meshes with the first bevel gear to make the rotating rod rotate. The gear on the top of the rotating rod rolls on the rack, thereby driving the slider to move left and right along the guide rail, realizing the adjustment of the left and right positions of the frame. The second bevel gear meshes with the third bevel gear to drive the rotating shaft to rotate, so that the connecting frame and the frame rotate, ensuring that all parts of the frame can be evenly sand blasted, realizing the all-round sand blasting treatment of the frame, without the need to set multiple nozzles, reducing the equipment cost of sand blasting; at the same time, the provided frame hook locking component can avoid the problem that the frame is easily detached during the sand blasting process. Description of the Drawings
[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model;
[0015] Figure 2 It is a schematic diagram of the internal structure of the sand blasting box of the present utility model;
[0016] Figure 3 It is a schematic diagram of the structure of the high-pressure air flow cleaning component of the present utility model;
[0017] Figure 4Schematic diagram of the rotation and translation assembly structure of the present utility model;
[0018] Figure 5 Another schematic diagram of the rotation and translation assembly structure of the present utility model;
[0019] Figure 6 Schematic diagram of the frame hook locking assembly structure of the present utility model.
[0020] In the figure: 101, sand blasting box; 102, support legs; 103, sealing door; 104, sand blaster; 105, sand blasting nozzle; 2, high-pressure air flow cleaning assembly; 201, motor 1; 202, reciprocating lead screw; 203, slide bar; 204, moving seat; 205, high-pressure air pump; 206, high-pressure nozzle; 207, telescopic hose; 3, rotation and translation assembly; 301, guide rail; 302, slider; 303, fixed frame; 304, rack; 305, gear; 306, rotating rod; 307, bevel gear 1; 308, bevel gear 2; 309, bevel gear 3; 310, rotating shaft; 311, motor 2; 312, electric telescopic rod; 4, frame hook locking assembly; 401, connecting frame; 402, moving block; 403, spring; 404, lifting rod; 405, hook; 406, handle; 407, fixing plate; 408, circular groove hole 1; 409, side plate; 410, screw; 411, nut; 412, circular groove hole 2. Detailed implementation manners
[0021] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the detailed implementation manners:
[0022] As Figure 1 , Figure 2 , Figure 3 shown, the present utility model provides an automatic sand blasting device for the surface of a motorcycle frame, including a sand blasting box 101. Four corners of the bottom of the sand blasting box 101 are fixedly connected with support legs 102. Two symmetrically arranged sealing doors 103 are hinged on the front side of the sand blasting box 101. The upper part of the rear side wall of the sand blasting box 101 is fixedly connected with a sand blaster 104. The output end of the sand blaster 104 penetrates into the interior of the sand blasting box 101 and is fixedly connected with a sand blasting nozzle 105. A rotation and translation assembly 3 is arranged above the interior of the sand blasting box 101. The bottom of the rotation and translation assembly 3 is fixedly connected with a plurality of frame hook locking assemblies 4 distributed at equal intervals from left to right. A high-pressure air flow cleaning assembly 2 is arranged below the interior of the sand blasting box 101.
[0023] The provided sealing door 103 can seal the device to prevent sand and gravel from splashing, and the provided support legs 102 provide support for the entire device.
[0024] As Figure 3As shown in the figure, the high-pressure air flow cleaning assembly 2 includes a reciprocating lead screw 202, which is rotatably connected to the lower part inside the sandblasting box 101. A first motor 201 is fixedly connected to the lower part of the left side wall of the sandblasting box 101. The left end of the reciprocating lead screw 202 penetrates through the left outer wall of the sandblasting box 101 and is fixedly connected to the output end of the first motor 201. A slide bar 203 fixedly connected to the inner wall of the sandblasting box 101 is arranged below the reciprocating lead screw 202. A moving seat 204 threadedly connected to the outer wall of the reciprocating lead screw 202 and slidably connected to the outer wall of the slide bar 203 is arranged. A high-pressure air pump 205 is fixedly connected to the lower part of the rear side wall of the sandblasting box 101. A telescopic hose 207 is fixedly connected to the top air outlet of the high-pressure air pump 205. One end of the telescopic hose 207 away from the high-pressure air pump 205 penetrates into the interior of the sandblasting box 101 and is fixedly connected to the moving seat 204. A high-pressure spray head 206 is fixedly connected to the front side wall of the moving seat 204.
[0025] After sandblasting is completed and it is necessary to clean the sand and gravel on the surface of the motorcycle frame, start the first motor 201. The first motor 201 drives the reciprocating lead screw 202 to rotate, so that the moving seat 204 moves left and right along the reciprocating lead screw 202 under the guiding action of the slide bar 203. At the same time, the high-pressure air pump 205 works, and the high-pressure gas is conveyed to the high-pressure spray head 206 through the telescopic hose 207. The high-pressure spray head 206 performs high-pressure air flow cleaning on the surface of the frame as the moving seat 204 moves, blowing away the residual sand grains and other impurities on the surface of the motorcycle frame, avoiding the problem that when the motorcycle frame is painted subsequently, the residual sand and gravel damage the uniformity and adhesion of the frame coating, resulting in coating peeling or cracking, and at the same time reducing the subsequent cleaning work of the frame by workers and reducing labor costs.
[0026] As Figure 4 、 Figure 5 As shown in the figure, the rotary moving assembly 3 includes two guide rails 301. A plurality of sliders 302 are slidably connected to the opposite surfaces of the front and rear guide rails 301. Fixed frames 303 are fixedly connected to the bottoms of the plurality of sliders 302. Electric telescopic rods 312 are fixedly connected between two adjacent fixed frames 303 on the left and right. Second motors 311 are fixedly connected to the rear side walls of the plurality of fixed frames 303. A rack 304 is fixedly connected to the top of the rear guide rail 301. Rotary rods 306 are rotatably connected to the tops of the plurality of sliders 302. Gears 305 meshing with the rack 304 are fixedly connected to the tops of the plurality of rotary rods 306. The bottom of the rotary rod 306 penetrates through the inner top wall of the fixed frame 303 and is fixedly connected to a first bevel gear 307. A second bevel gear 308 is meshed with the rear side of the first bevel gear 307. The rear end of the second bevel gear 308 penetrates through the rear outer wall of the fixed frame 303 and is fixedly connected to the output end of the second motor 311. A third bevel gear 309 is meshed with the bottom of the second bevel gear 308. A rotary shaft 310 rotatably connected to the fixed frame 303 is fixedly connected to the bottom of the third bevel gear 309.
[0027] When surface sandblasting treatment is required for a motorcycle frame, first open the sealing door 103 on the front side of the sandblasting box 101, fix the motorcycle frame on the hook 405 through the frame hook locking assembly 4 provided, then start the sandblaster 104 and the second motor 311 simultaneously. The second motor 311 drives the second bevel gear 308 to rotate. The second bevel gear 308 meshes with the first bevel gear 307 to make the rotating rod 306 rotate. The gear 305 at the top of the rotating rod 306 rolls on the rack 304, thereby driving the slider 302 to move left and right along the guide rail 301 to realize the adjustment of the left and right positions of the frame. The provided electric telescopic rod 312 can adjust the distance between two adjacent fixed frames 303 to adapt to frames of different sizes. The sandblasting nozzle 105 starts to perform sandblasting treatment on the surface of the frame. During the sandblasting process, the second motor 311 can continuously adjust the position and angle of the frame as needed. By the meshing of the second bevel gear 308 and the third bevel gear 309, the rotating shaft 310 is driven to rotate, so that the connecting frame 401 and the frame rotate, ensuring that all parts of the frame can be evenly sandblasted, realizing the all-round sandblasting treatment of the frame, without the need to set multiple nozzles, and reducing the equipment cost of sandblasting.
[0028] As Figure 6 shown, the frame hook locking assembly 4 includes a connecting frame 401. A moving block 402 is slidably connected inside the connecting frame 401. The bottom of the rotating shaft 310 penetrates through the bottom wall of the fixed frame 303 and is fixedly connected to the top of the connecting frame 401. A lifting rod 404 is fixedly connected to the bottom of the moving block 402. The bottom of the lifting rod 404 penetrates through the bottom wall of the connecting frame 401 and is fixedly connected to a hook 405. A spring 403 is sleeved on the outer wall of the lifting rod 404. The upper and lower ends of the spring 403 are respectively fixedly connected to the bottom of the moving block 402 and the inner bottom wall of the connecting frame 401.
[0029] As Figure 6 shown, a handle 406 is fixedly connected to the bottom of the hook 405. A first round groove hole 408 is formed in the outer wall of the hook 405. A fixed plate 407 is fixedly connected to the bottom of the left side wall of the connecting frame 401. A second round groove hole 412 adapted to the diameter of the hook 405 is formed in the top of the fixed plate 407. Two symmetric side plates 409 are fixedly connected to the top of the fixed plate 407. Third round groove holes adapted to the size of the first round groove hole 408 are formed in the opposite surfaces of the front and rear side plates 409. Screws 410 are inserted through the third round groove holes formed in the front and rear side plates 409. The rear end of the screw 410 penetrates through the rear side wall of the rear side plate 409 and is threadedly connected to a nut 411.
[0030] When it is necessary to fix the motorcycle frame, pull down the handle 406, drive the lifting rod 404 and the moving block 402 to slide down in the connecting frame 401, compress the spring 403, pass the hook 405 through a specific part of the motorcycle frame, and then release the handle 406. The spring 403 rebounds to fix the frame with the hook 405. Then insert the screw 410 into the circular groove hole three opened on the side wall of the side plate 409 and the circular groove hole one 408 on the outer wall of the hook 405, and tighten the nut 411 to further ensure that the frame is firmly fixed on the hook 405, avoiding the problem that the frame is likely to fall off during the sandblasting process.
[0031] It should be particularly noted that the sandblasting machine 104 and the high-pressure air pump 205 are both prior arts and will not be elaborated here.
[0032] Next, the working principle of the automatic sandblasting equipment for the surface of the motorcycle frame will be specifically described.
[0033] As Figures 1-6 shown, when it is necessary to perform surface sandblasting treatment on the motorcycle frame, first open the sealing door 103 on the front side of the sandblasting box 101, pull down the handle 406, drive the lifting rod 404 and the moving block 402 to slide down in the connecting frame 401, compress the spring 403, pass the hook 405 through a specific part of the motorcycle frame, and then release the handle 406. The spring 403 rebounds to fix the frame with the hook 405. Then insert the screw 410 into the circular groove hole three opened on the side wall of the side plate 409 and the circular groove hole one 408 on the outer wall of the hook 405, and tighten the nut 411 to further ensure that the frame is firmly fixed on the hook 405, avoiding the problem that the frame is likely to fall off during the sandblasting process.
[0034] After fixing the motorcycle frame on the hook 405, start the sandblasting machine 104 and the second motor 311 simultaneously. The second motor 311 drives the second bevel gear 308 to rotate. The second bevel gear 308 meshes with the first bevel gear 307 to make the rotating rod 306 rotate. The gear 305 at the top of the rotating rod 306 rolls on the rack 304, thereby driving the slider 302 to move left and right along the guide rail 301 to realize the adjustment of the left and right positions of the frame. The set electric telescopic rod 312 can adjust the distance between two adjacent fixed frames 303 to adapt to frames of different sizes. The sandblasting nozzle 105 starts to perform sandblasting treatment on the surface of the frame. During the sandblasting process, the second motor 311 can continuously adjust the position and angle of the frame as needed. By the meshing of the second bevel gear 308 and the third bevel gear 309, the rotating shaft 310 is driven to rotate, so that the connecting frame 401 and the frame rotate, ensuring that all parts of the frame can be evenly sandblasted, realizing the all-round sandblasting treatment of the frame, without the need to set multiple nozzles, and reducing the equipment cost of sandblasting.
[0035] When it is necessary to clean the sand and gravel on the surface of the motorcycle frame after sandblasting is completed, the first motor 201 is started. The first motor 201 drives the reciprocating lead screw 202 to rotate, so that the moving seat 204 moves left and right along the reciprocating lead screw 202 under the guiding action of the sliding rod 203. At the same time, the high-pressure air pump 205 works, and the high-pressure gas is transported to the high-pressure nozzle 206 through the telescopic hose 207. The high-pressure nozzle 206 performs high-pressure air flow cleaning on the surface of the frame as it moves with the moving seat 204, blowing away the residual sand grains and other impurities on the surface of the motorcycle frame, avoiding the problem that when the motorcycle frame is subsequently painted, the residual sand and gravel damage the uniformity and adhesion of the frame coating, resulting in peeling or cracking of the coating. At the same time, it reduces the subsequent cleaning work of the frame by workers and reduces the labor cost.
[0036] Finally, open the sealing door 103, and remove the processed frame from the hook 405.
[0037] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art. Therefore, the modifications or improvements that do not depart from the spirit and idea of the present utility model are within the protection scope of the present utility model.
Claims
1. An automatic sandblasting device for a motorcycle frame surface, comprising a sandblasting box (101), characterized in that: The four corners of the bottom of the sand throwing box (101) are fixedly connected to supporting legs (102); the front side of the sand throwing box (101) is hinged with two left-right symmetrical sealing doors (103); a sand throwing machine (104) is fixedly connected to the upper part of the rear side wall of the sand throwing box (101); the output end of the sand throwing machine (104) penetrates into the interior of the sand throwing box (101) and is fixedly connected to a sand throwing nozzle (105); a rotating moving component (3) is arranged above the interior of the sand throwing box (101); a plurality of frame hook locking components (4) which are equidistantly distributed on the left and right are fixedly connected to the bottom of the rotating moving component (3); and a high-pressure airflow cleaning component (2) is arranged below the interior of the sand throwing box (101).
2. The automatic sandblasting equipment for the surface of a motorcycle frame according to claim 1, characterized in that: The high-pressure airflow cleaning component (2) comprises a reciprocating screw (202), the reciprocating screw (202) is rotatably connected to the lower part of the interior of the sand throwing box (101), a motor (201) is fixedly connected to the lower part of the left side wall of the sand throwing box (101), the left end of the reciprocating screw (202) penetrates the left side outer wall of the sand throwing box (101) and is fixedly connected to the output end of the motor (201), a sliding rod (203) fixedly connected to the inner wall of the sand throwing box (101) is arranged below the reciprocating screw (202), and the reciprocating screw ( The outer wall of the sand throwing box (101) is threadedly connected to a movable seat (204) which is slidably connected to the outer wall of the slide rod (203); a high-pressure air pump (205) is fixedly connected to the lower rear side wall of the sand throwing box (101); a telescopic hose (207) is fixedly connected to the top air outlet of the high-pressure air pump (205); one end of the telescopic hose (207) away from the high-pressure air pump (205) passes through the interior of the sand throwing box (101) and is fixedly connected to the movable seat (204); and a high-pressure nozzle (206) is fixedly connected to the front side wall of the movable seat (204).
3. The automatic sandblasting equipment for the surface of a motorcycle frame according to claim 1, characterized in that: The rotating moving assembly (3) comprises two guide rails (301), the opposite surfaces of the front and rear guide rails (301) are slidably connected to a plurality of sliders (302), the bottoms of the plurality of sliders (302) are fixedly connected to a fixed frame (303), an electric telescopic rod (312) is fixedly connected between two adjacent left and right fixed frames (303), the rear side walls of the plurality of fixed frames (303) are fixedly connected to a motor 2 (311), the top of the rear guide rail (301) is fixedly connected to a rack (304), the tops of the plurality of sliders (302) are rotatably connected to a rotating rod (306), and the plurality of rotating rods (306) are fixedly connected to the rear side walls of the plurality of fixed frames (303). The top is fixedly connected with a gear (305) meshing with the rack (304); the bottom of the rotating rod (306) penetrates the inner top wall of the fixed frame (303) and is fixedly connected with a bevel gear 1 (307); the rear side of the bevel gear 1 (307) is meshingly connected with a bevel gear 2 (308); the rear end of the bevel gear 2 (308) penetrates the rear outer wall of the fixed frame (303) and is fixedly connected to the output end of the motor 2 (311); the bottom of the bevel gear 2 (308) is meshingly connected with a bevel gear 3 (309); the bottom of the bevel gear 3 (309) is fixedly connected with a rotating shaft (310) rotatably connected to the fixed frame (303).
4. The automatic sandblasting equipment for the surface of a motorcycle frame according to claim 3 is characterized in that: The frame hook locking assembly (4) comprises a connecting frame (401), the interior of the connecting frame (401) is slidably connected to a moving block (402), the bottom of the rotating shaft (310) penetrates through the bottom wall of the fixed frame (303) and is fixedly connected to the top of the connecting frame (401), the bottom of the moving block (402) is fixedly connected to a lifting rod (404), the bottom of the lifting rod (404) penetrates through the bottom wall of the connecting frame (401) and is fixedly connected to a hook (405), the outer wall of the lifting rod (404) is sleeved with a spring (403), and the upper and lower ends of the spring (403) are respectively fixedly connected to the bottom of the moving block (402) and the inner bottom wall of the connecting frame (401).
5. The automatic sandblasting equipment for the surface of a motorcycle frame according to claim 4, characterized in that: The bottom of the hook (405) is fixedly connected with a handle (406), the outer wall of the hook (405) is provided with a circular groove hole 1 (408), the bottom of the left wall of the connection frame (401) is fixedly connected with a fixing plate (407), the top of the fixing plate (407) is provided with a circular groove hole 2 (412) which is adapted to the diameter of the hook (405), the top of the fixing plate (407) is fixedly connected with two front and rear symmetrical side plates (409), the opposite surfaces of the front and rear side plates (409) are provided with circular groove holes 3 which are adapted to the size of the circular groove hole 1 (408), the front and rear side plates (409) are plugged with screws (410) through the circular groove holes 3, the rear end of the screw (410) penetrates through the rear side wall of the rear side plate (409) and is threadedly connected with a nut (411).