A suspended shot blasting device

Abstract

This utility model relates to the technical field of suspended shot blasting devices, and more particularly to a suspended shot blasting device, including a base, a shot blasting box on the top surface of the base, a double door that can be automatically opened and closed on the front side of the shot blasting box, several sets of shot blasters on the right side of the shot blasting box, a hoisting mechanism inside the shot blasting box, and a hook assembly on the output end of the hoisting mechanism. The hook assembly includes a suspension part and a limiting part. The suspension part includes several hooks. The hooks can achieve revolution and rotation through the cooperation of the hoisting mechanism and the limiting part. The advantages of this utility model are: through the cooperation of the hoisting mechanism and the suspension part and limiting part in the hook assembly, not only can the object be prevented from swaying during shot blasting, but the object can also achieve revolution and rotation during shot blasting, which improves the stability of shot blasting, improves the comprehensiveness of shot blasting, improves the quality and efficiency of shot blasting, and is more practical.

Description

Technical Field

[0001] This utility model relates to the technical field of suspended shot blasting devices, and in particular to a suspended shot blasting device. Background Technology

[0002] In modern manufacturing, the surface quality of metal workpieces is crucial to product performance, service life, and appearance. Surface treatment processes, especially cleaning (removing oxide scale, rust, welding slag, old coatings, etc.) and strengthening (improving fatigue strength and resistance to stress corrosion), are indispensable parts of the production process. Shot blasting, as a highly efficient, environmentally friendly, and effective surface treatment technology, is widely used in casting, forging, automotive, aerospace, and engineering machinery industries.

[0003] Among the many types of shot blasting equipment (such as tracked, drum, turntable, through, and chain-type), the hook-type shot blasting machine occupies an important position due to its unique working principle and applicability. It is mainly used for cleaning and strengthening single pieces, small to medium batches, complex shapes, heavy weights, or workpieces that need to avoid collisions.

[0004] The prior art, with publication number CN222958361U, discloses a hook-type shot blasting machine, including a machine body and a controller. The machine body is connected to a moving mechanism and a moving block, and the moving block is internally connected to a rotating mechanism and a rotating plate. The rotating plate is connected by a buckle and a fixing ring. A cleaning mechanism is provided. In use, after the workpiece is hung above the hook frame, the hook frame can hold multiple workpieces at the same time. At this time, the self-opening mechanism opens the box door through the hinge shaft. Then, the moving mechanism drives the moving block to move, causing the hook frame below to move. After the hook frame is moved into the machine body, the push rod drives the moving plate to move again, closing the box door. At this time, the shot blasting machine inside the machine body is started to clean the surface of the workpiece. At the same time, the rotating mechanism drives the rotating plate below to rotate, and the lowered hook frame rotates simultaneously. Multiple workpieces on the surface rotate synchronously, resulting in a better cleaning effect.

[0005] However, the aforementioned existing technology still has certain shortcomings in its use: First, in the aforementioned existing technology, the hook frame is suspended on the hook of the moving mechanism. When the moving mechanism brings the hook frame into the machine body and stops, the suspended hook frame is prone to significant swaying due to inertia. In this swaying state, not only is it easy for the workpiece on it to fall off the hook frame, but it is also not conducive to driving the rotation of the hook frame and the workpiece. Furthermore, during shot blasting, the workpiece is not concentrated, resulting in insufficient processing and ultimately reducing the quality of shot blasting. Second, in the aforementioned existing technology, the hook frame is driven to rotate by a rotating mechanism, causing the workpiece on the hook frame to revolve with the rotation of the hook frame. However, the side of the revolving workpiece facing away from the shot blasting machine is not easy to directly enter the shot blasting process, especially when the workpiece surface is complex. This requires extending the running time to ensure that the workpiece is fully shot blasted, resulting in low processing sufficiency, high cost, and low shot blasting efficiency. Therefore, the existing technology needs further improvement. Utility Model Content

[0006] The purpose of this invention is to provide a suspended shot blasting device to solve the problems in the prior art where the hook and the workpiece on the hook are prone to shaking, which reduces the quality of shot blasting, and the workpiece can only revolve around the sun and cannot rotate on its own axis, resulting in incomplete processing or low shot blasting efficiency.

[0007] The present invention adopts the following technical solution: a suspended shot blasting device, including a base, a shot blasting box provided on the top surface of the base, a double door that can be automatically opened and closed provided on the front side of the shot blasting box, a number of shot blasters provided on the right side of the shot blasting box, a hoisting mechanism provided inside the shot blasting box, a hook assembly provided on the output end of the hoisting mechanism, the hook assembly including a suspension part and a limiting part, the suspension part including a number of hooks, the hooks can realize revolution and rotation through the cooperation of the hoisting mechanism and the limiting part.

[0008] Preferably, the hoisting mechanism includes a frame, the top surface of which is connected to the output end of the electric hoist in the mobile system. The bottom surface of the frame is symmetrically provided with limit strips, and a limit component is provided between the two limit strips. A limit plate is provided at the bottom end of the two limit strips. A rotating shaft is rotatably provided on the bottom surface of the frame. The lower end of the rotating shaft passes through and rotates in the middle of the limit component and the limit plate. A motor whose output end is fixedly connected to the rotating shaft is fixedly provided inside the frame. A hook is provided at the bottom end of the rotating shaft at the bottom of the limit plate. A cross-shaped groove is provided on the front side of the upper end of the shot blasting box. The width and height of the horizontal section of the cross-shaped groove are adapted to the width and thickness of the limit plate.

[0009] Preferably, the suspension part includes a circular tube with a lifting lug at the top. Several discs are spaced apart on the circular tube. Only a rod is rotatably mounted inside the circular tube, with the bottom end of the rod extending out of the circular tube by a predetermined length. An annular groove communicating with the inside of the circular tube is opened inside the disc. A gear 1 is mounted on the rod located in the annular groove. Several hooks 2 are arranged in a circumferential array and rotatably mounted on the bottom surface of the disc. The top end of the hook 2 extends into the annular groove. A gear 2 that meshes with the gear 1 is mounted on the top end of the hook 2 located in the annular groove.

[0010] Preferably, the top surface of the disk is set as an inclined surface with a set slope, and the height of the inclined surface gradually decreases from the inside to the outside.

[0011] Preferably, the limiting part includes a limiting block disposed in the middle of the bottom surface of the shot blasting chamber. A rectangular groove is provided on the front side of the limiting block, and a V-shaped opening communicating with the rectangular groove is provided on the top surface of the limiting block. The inner end of the V-shaped opening is set as an arc surface adapted to the outer diameter of the round tube, and the arc surface is in rotatable contact with the round tube. A clamping block for clamping and stabilizing the rod extending out of the round tube is slidably disposed in the rectangular groove. A driving component for driving the two clamping blocks to move relative to each other is provided in the limiting block.

[0012] Preferably, the drive assembly includes a motor housing disposed on the side of the limiting block, a second motor disposed inside the motor housing, a receiving groove communicating with the rectangular slot in the limiting block, a bidirectional lead screw rotatably disposed in the receiving groove, the output end of the second motor passing through the side of the limiting block and fixedly connected to the bidirectional lead screw, and protrusions provided on the inner sides of the two clamping blocks, the two protrusions respectively engaging with the threaded sections of the bidirectional lead screw in different directions.

[0013] Preferably, the two clamping blocks have a semi-circular groove one and a semi-circular groove two respectively on their opposite surfaces. When the semi-circular groove one and the semi-circular groove two overlap, they form a cylindrical groove that is adapted to the outer diameter of the rod.

[0014] Preferably, the bottom surface of the rod is provided with several anti-slip grooves, and the inner walls of the semicircular groove one and the semicircular groove two are provided with several anti-slip patterns.

[0015] Preferably, when the inner end face of the limiting plate contacts the inner side of the cross-shaped groove and the round tube is in a vertical state, the bottom end of the round tube is in contact with the arc surface of the V-shaped opening.

[0016] Preferably, there is a set gap between the bottom end of the rod and the bottom surface of the rectangular groove, and a set gap between the bottom surface of the round tube and the top surface of the clamping block.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] 1. This application includes a lifting mechanism and hook assembly that can be driven by a motor to rotate a hook. The hook assembly includes a suspension part suspended on the hook and a limiting part located on the bottom surface of the shot blasting chamber. The suspension part includes a circular tube that is hung on the hook via a lifting lug. A rod extending from the bottom of the circular tube is rotatably mounted inside the tube. Several discs with annular grooves are spaced apart on the circular tube. A gear is fixedly mounted on the rod within the annular groove. Several hooks are arranged in an array and rotatably on the bottom surface of the discs. A gear is mounted at the top of each hook within the annular groove, meshing with the gear. The limiting part includes a limiting block with a rectangular groove. The top of the limiting block has a V-shaped opening communicating with the rectangular groove. Two clamping blocks slide relative to each other within the rectangular groove. When the suspension part enters the shot blasting chamber and stops, the V-shaped opening on the limiting block can initially limit and guide the suspension part, greatly improving its stability. The suspension unit's sway is reduced, and then the extended rod is clamped in the middle by two clamping blocks, thus stabilizing the suspension unit and preventing swaying during processing. This improves shot blasting quality and facilitates rotation of the suspension unit during shot blasting. When the motor in the hook mechanism drives the hook to rotate, the hook drives the round tube and the disc to rotate through the lifting lug. This causes the hook on the disc and the workpiece on it to revolve. At the same time, because the rod is restricted by the clamping blocks, the gear on the hook is driven by the stationary gear to rotate spontaneously. This allows the workpiece to rotate while revolving, enabling all surfaces of the workpiece to be directly shot blasted. This improves the comprehensiveness and quality of shot blasting, reduces shot blasting time, greatly increases shot blasting efficiency, and enhances practicality.

[0019] 2. In this application, two clamping blocks are respectively provided with a semi-circular groove one and a semi-circular groove two opposite each other. Anti-slip textures are provided on the inner walls of the semi-circular groove one and the semi-circular groove two. Anti-slip grooves are provided on the rod extending out of the round tube. Through the dual setting of anti-slip textures and anti-slip grooves, the stability of the suspended part during shot blasting is better, and the shot blasting quality is further ensured. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the hoisting mechanism of this utility model;

[0022] Figure 3 This is a schematic diagram of the suspension part of this utility model;

[0023] Figure 4 This is a cross-sectional structural diagram of the suspension part of this utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the disc of this utility model;

[0025] Figure 6 This is a schematic diagram of the cooperation structure between the hoisting mechanism and the suspension part of this utility model;

[0026] Figure 7 This is a schematic diagram of the structure of the limiting part of this utility model;

[0027] Figure 8 This is a schematic diagram of the structure of some parts of the limiting part of this utility model. Figure 1 ;

[0028] Figure 9 This utility model Figure 8 Enlarged structural diagram at point A;

[0029] Figure 10 This is a schematic diagram of the structure of some parts of the limiting part of this utility model. Figure 2 .

[0030] In the diagram: 1. Base; 2. Shot blasting chamber; 3. Double door; 4. Shot blaster; 5. Lifting mechanism; 6. Hook assembly; 7. Suspension part; 8. Restriction part; 9. Frame; 10. Limiting strip; 11. Limiting component; 12. Limiting plate; 13. Rotating shaft; 14. Motor 1; 15. Hook 1; 16. Cross-shaped groove; 17. Round tube; 18. Lifting lug; 19. Disc; 20. Rod; 21. Annular groove; 22. Gear 1; 23. Hook 2; 24. Gear 2; 25. Restricting block; 26. Rectangular groove; 27. V-shaped opening; 28. Clamping block; 29. ​​Motor box; 30. Motor 2; 31. Receiving groove; 32. Bidirectional lead screw; 33. Protrusion; 34. Semicircular groove 1; 35. Semicircular groove 2; 36. Columnar groove; 37. Anti-slip groove; 38. Anti-slip texture. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only a part of the embodiments disclosed in this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0032] Various non-limiting embodiments of this utility model are described in detail below. Any number of elements in the accompanying drawings is for illustrative purposes only and not for limitation, and any naming is for distinction only and has no limiting meaning.

[0033] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0034] Please see Figure 1-10The present invention will now be described in detail with reference to the accompanying drawings and embodiments: A suspended shot blasting device includes a base 1, a shot blasting box 2 on the top surface of the base 1, a double door 3 that can be automatically opened and closed on the front side of the shot blasting box 2, several sets of shot blasters 4 on the right side of the shot blasting box 2, a hoisting mechanism 5 inside the shot blasting box 2, a hook assembly 6 on the output end of the hoisting mechanism, the hook assembly 6 including a suspension part 7 and a limiting part 8, the suspension part 7 including several hooks 23, the hooks 23 can achieve revolution and rotation through the cooperation of the hoisting mechanism 5 and the limiting part 8, a shot blasting circulation system at the bottom of the shot blasting box, the output end of the shot blasting circulation system being connected to the input end of the shot blasters 4, the shot blasting sieve that falls into the bottom surface of the shot blasting box can be collected and transported to the shot blasters 4 through the shot blasting circulation system. The shot blasters 4 and the shot blasting circulation system mentioned above are prior art and will not be described in detail here.

[0035] Please see Figure 1-2 The hoisting mechanism 5 includes a frame 9, the top surface of which is connected to the output end of the electric hoist in the moving system. The moving system can automatically move the hoisting mechanism 5 and the suspension part 7 out of or into the shot blasting chamber 2. The height of the hoisting mechanism 5 and the suspension part 7 can be adjusted by the electric hoist to facilitate unloading or loading of materials. Limiting strips 10 are symmetrically fixedly installed on the bottom surface of the frame 9, and limiting elements 11 are fixedly installed between the two limiting strips 10. The bottom ends of the two limiting strips 10 are jointly fixedly installed with a limiting element. A rotating shaft 13 is rotatably mounted on the bottom surface of the positioning plate 12 and the frame 9. The lower end of the rotating shaft 13 passes through and rotates between the limiting member 11 and the middle of the limiting plate 12. A motor 14 is fixedly mounted inside the frame 9. The output end of the motor 14 passes through the bottom surface of the frame 9 and is fixedly connected to the rotating shaft 13. A hook 15 is fixedly mounted at the bottom end of the rotating shaft 13 at the bottom of the limiting plate 12. A cross-shaped slide groove 16 is opened on the front side of the upper end of the shot blasting box 2. The width and height of the horizontal section of the cross-shaped slide groove 16 are adapted to the width and thickness of the limiting plate 12. The above-mentioned moving system and electric hoist are existing technologies and will not be described in detail here.

[0036] Please see Figure 3-6 The suspension part 7 includes a circular tube 17, with a lifting lug 18 fixedly installed at the top end of the circular tube 17. Several discs 19 are fixedly installed at intervals on the circular tube 17. A rod 20 is rotatably installed inside the circular tube 17, with the bottom end of the rod 20 extending out of the circular tube 17 by a predetermined length. An annular groove 21 communicating with the inside of the circular tube 17 is opened inside the disc 19. A gear 22 is sleeved and fixedly installed on the rod 20 located in the annular groove 21. The bottom surface of the gear 22 is in rotatable contact with the bottom surface of the annular groove 21. Several hooks 23 are arranged in a circular array and rotatably installed on the bottom surface of the disc 19. The top end of the hooks 23 extends into the annular groove 21. A gear 24 that meshes with the gear 22 is fixedly installed at the top end of the hooks 23 located in the annular groove 21.

[0037] Please see Figure 4 To prevent shot blasting from accumulating on the top surface of the disk 19, the top surface of the disk 19 is set as an inclined surface with a set slope, and the height of the inclined surface gradually decreases from the inside to the outside.

[0038] Please see Figure 7-10 The limiting part 8 includes a limiting block 25 detachably disposed in the middle of the bottom surface of the shot blasting box 2. A rectangular groove 26 is provided on the front side of the limiting block 25. A V-shaped opening 27 communicating with the rectangular groove 26 is provided on the top surface of the limiting block 25. The V-shaped opening 27 faces the double door 3. The inner end of the V-shaped opening 27 is set as an arc surface adapted to the outer diameter of the round tube 17, and the arc surface is in rotatable contact with the round tube 17. A clamping block 28 for clamping and stabilizing the rod 20 extending out of the round tube 17 is slidably disposed in the rectangular groove 26. A driving component for driving the two clamping blocks 28 to move relative to each other is provided in the limiting block 25.

[0039] Please see Figure 7-10 The drive assembly includes a motor housing 29 fixedly mounted on the side of the limiting block 25, a second motor 30 fixedly mounted inside the motor housing 29, a receiving groove 31 communicating with the rectangular groove 26 in the limiting block 25, a bidirectional lead screw 32 rotatably mounted inside the receiving groove 31, the output end of the second motor 30 passes through the side of the limiting block 25 and is fixedly connected to the bidirectional lead screw 32, and protrusions 33 are fixedly mounted on the inner sides of the two clamping blocks 28, and the two protrusions 33 are threadedly engaged with the threaded sections of the bidirectional lead screw 32 with different directions of rotation.

[0040] Please see Figure 9-10 The two clamping blocks 28 have semi-circular groove 1 34 and semi-circular groove 2 35 respectively on their opposite surfaces. When semi-circular groove 1 34 and semi-circular groove 2 35 overlap, a cylindrical groove 36 is formed that is adapted to the outer diameter of the rod 20.

[0041] Please see Figure 10 In order to enhance the friction between the rod 20 and the clamping block 28, a number of anti-slip grooves 37 are provided on the bottom surface of the rod 20, and a number of anti-slip patterns 38 are provided on the inner walls of the semi-circular groove 1 34 and the semi-circular groove 2 35.

[0042] When the inner end face of the limiting plate 12 contacts the inner side of the cross-shaped slide groove 16 and the round tube 17 is in a vertical state, the bottom end of the round tube 17 is in contact with the arc surface of the V-shaped opening 27.

[0043] There is a set gap between the bottom end of the rod 20 and the bottom surface of the rectangular groove 26, and there is a set gap between the bottom surface of the round tube 17 and the top surface of the clamping block 28.

[0044] When this scheme is running, firstly, the object to be shot blasted is hung on the hook 23 of the suspension part 7 outside the shot blasting box 2. Then, the electric hoist is started to lift the suspension part 7 and the hoisting mechanism 5 together to the required height. Then, the moving system is started to gradually move the suspension part 7 into the shot blasting box 2. During the movement of the hoisting mechanism 5, the limiting plate 12 gradually enters the cross-shaped slide groove 16 and slides along the cross-shaped slide groove 16.

[0045] When the wall of the limiting plate 12 contacts the inner wall of the cross-shaped slide groove 16, the moving system is shut down. During the sliding process of the limiting plate 12 in the cross-shaped slide groove 16, the bottom end of the round tube 17 gradually moves towards the V-shaped opening 27 of the limiting block 25. As it continues to move forward, the round tube 17 is guided by the limiting of the V-shaped opening 27 (because the moving system stops moving, the suspension part 7 will generate inertia and shake, and the V-shaped opening 27 will initially limit and stabilize the shaking suspension part 7, reducing most of the shaking amplitude). Finally, the round tube 17 contacts the arc surface of the V-shaped opening 27, and then the motor 2 30 is started to drive the bidirectional lead screw 32 to rotate. The bidirectional lead screw 32 drives the two clamping blocks 28 to gradually move towards the middle. During the movement, the two clamping blocks 28 further reduce the shaking of the round tube 17 and the rod 20, and finally clamp the rod 20 in the semi-circular groove 1 34 and the semi-circular groove 2 35, thereby achieving the final stability of the suspension part 7.

[0046] After the suspension part 7 is stabilized, the double doors 3 are closed first. Then, the shot blaster 4 on the outside of the shot blasting chamber 2 and the motor 14 inside the frame 9 are started simultaneously. The motor 14 drives the rotating shaft 13 to rotate. The rotating shaft 13 drives the hook 15 to rotate. The rotation of the hook 15 drives the round tube 17 to rotate through the lifting lug 18. The rotation of the round tube 17 drives the disc 19 to rotate. The rotation of the disc 19 causes the object on the hook 23 to revolve with the round tube 17. Because the clamping block 28 clamps the rod 20, the rod 20 and the gear 1 22 do not move. As the hook 23 revolves with the round tube 17, the revolving gear 24 rotates under the drive of the stationary gear 1 22. Finally, the hook 23 and the object on the hook 23 achieve rotation. Thus, the object rotates while revolving during the shot blasting process, which greatly improves the adequacy of the shot blasting treatment of the object surface and can also reduce the overall shot blasting time for each batch, thereby improving the shot blasting efficiency.

[0047] Based on the above description in this specification, those skilled in the art will also understand that the following terms, such as "upper," "lower," "front," "rear," "left," "right," "inner," and "outer," which indicate orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as a limitation on the present invention.

[0048] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A suspended shot blasting device, characterized in that: The system includes a base, a shot blasting chamber on the top surface of the base, a double door that can be automatically opened and closed on the front side of the shot blasting chamber, several sets of shot blasters on the right side of the shot blasting chamber, a hoisting mechanism inside the shot blasting chamber, and a hook assembly on the output end of the hoisting mechanism. The hook assembly includes a suspension part and a limiting part. The suspension part includes several hooks. The hooks can achieve revolution and rotation through the cooperation of the hoisting mechanism and the limiting part.

2. The suspended shot blasting device according to claim 1, characterized in that The hoisting mechanism includes a frame, the top surface of which is connected to the output end of the electric hoist in the mobile system. The bottom surface of the frame is symmetrically provided with limit strips, and a limit component is provided between the two limit strips. A limit plate is provided at the bottom end of the two limit strips. A rotating shaft is rotatably provided on the bottom surface of the frame. The lower end of the rotating shaft passes through and rotates in the middle of the limit component and the limit plate. A motor whose output end is fixedly connected to the rotating shaft is fixedly provided inside the frame. A hook is provided at the bottom end of the rotating shaft at the bottom of the limit plate. A cross-shaped groove is provided on the front side of the upper end of the shot blasting box. The width and height of the horizontal section of the cross-shaped groove are adapted to the width and thickness of the limit plate.

3. The suspended shot blasting device according to claim 2, characterized in that The suspension part includes a circular tube with a lifting lug at the top. Several discs are spaced apart on the circular tube. A rod is rotatably mounted inside the circular tube, with the bottom end of the rod extending a predetermined length out of the circular tube. An annular groove communicating with the inside of the circular tube is opened inside the disc. A gear 1 is mounted on the rod located in the annular groove. Several hooks 2 are arranged in a circumferential array and rotatably mounted on the bottom surface of the disc. The top of the hooks 2 extends into the annular groove. A gear 2 that meshes with the gear 1 is mounted on the top of the hooks 2 located in the annular groove.

4. The suspended shot blasting device according to claim 3, characterized in that The top surface of the disk is set as an inclined surface with a set slope, and the height of the inclined surface gradually decreases from the inside to the outside.

5. The suspended shot blasting device according to claim 3, characterized in that The limiting part includes a limiting block located in the middle of the bottom surface of the shot blasting chamber. A rectangular groove is provided on the front side of the limiting block, and a V-shaped opening communicating with the rectangular groove is provided on the top surface of the limiting block. The inner end of the V-shaped opening is set as an arc surface adapted to the outer diameter of the round tube, and the arc surface is in rotatable contact with the round tube. A clamping block for clamping and stabilizing the rod extending out of the round tube is slidably arranged in the rectangular groove. A driving component for driving the two clamping blocks to move relative to each other is provided in the limiting block.

6. The suspended shot blasting device according to claim 5, characterized in that The drive assembly includes a motor housing located on the side of the limiting block, a second motor housed inside the motor housing, a receiving groove communicating with a rectangular slot in the limiting block, a bidirectional lead screw rotatably mounted in the receiving groove, the output end of the second motor passing through the side of the limiting block and fixedly connected to the bidirectional lead screw, and protrusions provided on the inner sides of both clamping blocks, the two protrusions respectively engaging with threaded sections of the bidirectional lead screw in different directions.

7. The suspended shot blasting device according to claim 6, characterized in that The two clamping blocks have a semi-circular groove one and a semi-circular groove two respectively on their opposite surfaces. When the semi-circular groove one and the semi-circular groove two overlap, they form a cylindrical groove that is adapted to the outer diameter of the rod.

8. The suspended shot blasting device according to claim 7, characterized in that Several anti-slip grooves are provided on the bottom surface of the rod, and several anti-slip patterns are provided on the inner walls of semi-circular groove one and semi-circular groove two.

9. The suspended shot blasting device of claim 5, wherein: When the inner end face of the limiting plate contacts the inner side of the cross-shaped groove and the round tube is in a vertical state, the bottom end of the round tube is in contact with the arc surface of the V-shaped opening.

10. The suspended shot blasting device of claim 6, wherein: There is a set gap between the bottom end of the rod and the bottom surface of the rectangular groove, and there is a set gap between the bottom surface of the round tube and the top surface of the clamping block.

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