A polishing aid device

Abstract

The utility model provides a kind of polishing auxiliary device, including the first limiting frame of vertical setting, the lifting rod with thread being set in the first limiting frame, the lifting slide block being movably attached with the inner wall of first limiting frame and lifting motor, the top of lifting rod is connected with the output shaft of lifting motor after passing through the first limiting frame, lifting slide block is provided with threaded lifting hole in and out, lifting rod is threadedly cooperated with threaded lifting hole, the side of lifting slide block is provided with the clamping mechanism for clamping charging pile frame body.The polishing auxiliary device provided by the utility model is provided with lifting rod, lifting slide block, clamping mechanism and other structures, after clamping charging pile frame body by clamping mechanism, lifting slide block can drive charging pile frame body to move to a certain height by downward movement, operator can polish, without crouching, and since charging pile frame body is in suspended state, thus more easily polishing each welding point, operation is more simple and more labor-saving.

Description

Technical Field

[0001] This utility model belongs to the field of polishing and grinding technology, and relates to a polishing auxiliary device. Background Technology

[0002] Charging piles, also known as electric vehicle charging stations or electric vehicle power supply equipment, are devices that provide electrical energy to electric vehicles, enabling them to store enough electricity to support their operation.

[0003] Charging piles typically consist of a frame that protects the internal structure. The frame manufacturing process involves spot welding iron or steel plates, followed by partial full welding, and then polishing the weld points to make the surface smooth and free of sharp protrusions for subsequent painting. Current polishing operations involve placing the welded frame on the ground and having operators use a polishing machine to grind it. Because the weld points are located throughout the frame, operators need to squat down to grind lower weld points, or the frame needs to be flipped when the weld points are below the top plate. These operations are inconvenient and labor-intensive. Utility Model Content

[0004] The purpose of this invention is to provide a polishing auxiliary device, which aims to solve the problem that existing polishing and grinding operations are inconvenient and labor-intensive.

[0005] To solve the above-mentioned technical problems, this utility model provides a polishing auxiliary device, including a vertically arranged first limiting frame, a threaded lifting rod disposed within the first limiting frame, a lifting slider that movably fits against the inner wall of the first limiting frame, and a lifting motor. The top of the lifting rod passes through the first limiting frame and is connected to the output shaft of the lifting motor. The lifting slider is provided with a threaded lifting hole extending vertically, and the lifting rod is threadedly engaged with the threaded lifting hole. The side of the lifting slider is provided with a clamping mechanism for clamping the charging pile frame.

[0006] Furthermore, the clamping mechanism includes a horizontally arranged second limiting frame connected to the side of the lifting slider, a threaded first clamping rod disposed within the second limiting frame, two first clamping sliders movably fitted against the inner wall of the second limiting frame, and a first clamping handwheel. One end of the first clamping rod passes through the second limiting frame and is connected to the first clamping handwheel. Both first clamping sliders are provided with first threaded clamping holes, which are threadedly engaged with the first clamping rod. The threads on the first clamping rod that engage with the first threaded clamping holes of the two first clamping sliders have opposite directions of rotation. Clamping components are provided on the sides of both first clamping sliders.

[0007] Furthermore, the clamping assembly includes two clamping arms connected to the sides of the two first clamping sliders, two horizontally arranged third limiting frames connected to the two clamping arms, a threaded second clamping rod disposed within the third limiting frames, two second clamping sliders movably fitted against the inner wall of the third limiting frames, two clamping claws connected to the sides of the second clamping sliders, and a second clamping handwheel. Each of the two second clamping sliders has a second threaded clamping hole, which is threadedly engaged with the second clamping rod. The threads on the second clamping rod that engage with the second threaded clamping holes of the two second clamping sliders have opposite directions of rotation. One end of the second clamping rod passes through the third limiting frame and is connected to the second clamping handwheel.

[0008] Furthermore, the clamping claw includes a clamping plate connected to the side of the second clamping slider and two claw bodies connected to the top and bottom of the clamping plate. The two claw bodies are provided with a plurality of threaded adjustment holes evenly spaced apart at the ends away from the clamping plate. It also includes a support screw, which can be threadedly engaged with any one of the adjustment holes and extend out of the adjustment hole.

[0009] Furthermore, the third limiting frame is provided with connecting posts on both sides, and each of the two clamping arms is provided with a connecting port. The connecting posts are movably fitted with the inner wall of the connecting ports. The connecting posts are also provided with two limiting rings. The two sides of the clamping arms are respectively movably fitted with the two limiting rings. A rotating handwheel is provided at the end of one of the connecting posts. The frame also includes a locking component for locking the angle of the third limiting frame.

[0010] Furthermore, the connecting post with the rotating handwheel is hollow. The locking assembly includes two protrusions opposite each other on the connecting post, two protruding bodies that can movably extend from the two protrusions, an elastic pulling body connected to the protruding bodies, and a plurality of locking grooves spaced apart on the inner wall of one of the connecting posts. The two protruding bodies can be movably inserted into any two of the locking grooves. The surfaces of the protruding bodies are smooth and without bends. The surfaces of the inner wall of the connecting post in contact with the protruding bodies are also smooth and without bends. The connecting post has two opposite strip holes. It also includes a pulling rod inserted into the two strip holes. The side of the pulling rod is connected to the two pulling bodies. It also includes a locking spring located in the connecting post. The two ends of the locking spring are respectively connected to the inner wall of the end of the connecting post and the pulling rod.

[0011] Furthermore, a drive shaft is rotatably arranged within the second limiting frame, on which a first drive wheel and a second drive wheel are coaxially arranged, and a first drive belt and a second drive belt are also included. The first drive belt is wound around the outer wall of the hollow connecting column and the first drive wheel, and the second drive belt is wound around the outer wall of the other connecting column and the second drive wheel.

[0012] Furthermore, it also includes a placement body, the bottom of the first limiting frame is connected to the placement body, and two opening plates are provided at both ends of the placement body. The axes of the four opening plates are all obtuse angles with the axis of the placement body and the angles are the same.

[0013] Furthermore, the bottom of each of the four opening plates is provided with self-locking, rotatable casters.

[0014] Furthermore, the first limiting frame is also provided with two vertical rods, which are located on both sides of the lifting rod. The lifting slider has two limiting holes, and the inner walls of the two limiting holes are respectively in contact with the two vertical rods.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a polishing auxiliary device, which is equipped with a lifting rod, a lifting slider, a clamping mechanism and other structures. After the clamping mechanism clamps the charging pile frame, the lifting slider moves downward to drive the charging pile frame to a certain height, so that the operator can perform polishing without squatting. Since the charging pile frame is suspended, it is easier to polish the welding points. The operation is simpler and less strenuous. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an embodiment of a polishing auxiliary device according to the present invention. Figure 1 ;

[0018] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0019] Figure 3 This is a schematic diagram of the structure of an embodiment of a polishing auxiliary device according to the present invention. Figure 2 ;

[0020] Figure 4 This is a cross-sectional view of an embodiment of a polishing auxiliary device according to the present invention. Figure 1 ;

[0021] Figure 5 yes Figure 4 Enlarged view of point B in the middle;

[0022] Figure 6 This is a cross-sectional view of an embodiment of a polishing auxiliary device according to the present invention. Figure 2 ;

[0023] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0024] Figure 8 This is a schematic diagram of the connecting column and other structures in one embodiment of a polishing auxiliary device according to this utility model;

[0025] Figure 9 This utility model provides a schematic diagram of the structure of a polishing auxiliary device when clamping a charging pile frame.

[0026] The components include: 1. First limiting frame; 2. Lifting rod; 3. Lifting slider; 4. Lifting motor; 5. Threaded lifting hole; 6. Second limiting frame; 7. First clamping rod; 8. First clamping slider; 9. First clamping handwheel; 10. First threaded clamping hole; 11. Clamping arm; 12. Third limiting frame; 13. Second clamping rod; 14. Second clamping slider; 15. Clamping claw; 15a. Clamping plate; 15b. Claw body; 16. Second clamping handwheel; 17. Adjustment hole; 18. Support screw; 19. Connecting column. ; 20. Connecting port; 21. Limiting ring; 22. Rotating handwheel; 23. Extending port; 24. Extending body; 25. Pulling body; 26. Locking groove; 27. Strip hole; 28. Pulling rod; 29. ​​Locking spring; 30. Drive shaft; 31. First drive wheel; 32. Second drive wheel; 33. First drive belt; 34. Second drive belt; 35. Placement body; 36. Opening plate; 37. Universal wheel; 38. Vertical rod; 39. Limiting hole; 40. Pulling ring; 41. Second threaded clamping hole. Detailed Implementation

[0027] The polishing auxiliary device proposed in this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of this utility model will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model. The same or similar reference numerals in the drawings represent the same or similar parts.

[0028] This utility model provides a polishing auxiliary device, which is referenced in the embodiment of the present invention. Figures 1 to 9The system includes a vertically arranged first limiting frame 1, a threaded lifting rod 2 disposed within the first limiting frame 1, a lifting slider 3 movably fitted against the inner wall of the first limiting frame 1, and a lifting motor 4. The top of the lifting rod 2 passes through the first limiting frame 1 and is connected to the output shaft of the lifting motor 4. The lifting slider 3 has threaded lifting holes 5 extending vertically, and the lifting rod 2 is threaded into the threaded lifting holes 5. The side of the lifting slider 3 is provided with a clamping mechanism for clamping the charging pile frame. When polishing the charging pile frame is required, the clamping mechanism can be used to clamp the charging pile frame first, and then the lifting motor 4 can be turned on, causing the output shaft to rotate. The lifting rod 2 rotates, which in turn drives the lifting slider 3 to move upward under the limit of the first limit frame 1. After the charging pile frame moves to a certain height, the lifting motor 4 is turned off, and the charging pile frame stops at that height. Then the operator can polish and grind without squatting. Since the charging pile frame is in a suspended state, it is easier to polish and grind the welding points. The operation is simpler and less strenuous. When the polishing and grinding is completed, the lifting motor 4 can be turned on to reverse its output shaft, which can drive the lifting slider 3 to move downward until the charging pile frame touches the ground. Then the clamping mechanism can be released from the clamping mechanism, and the polished charging pile frame can be taken out.

[0029] refer to Figure 1 The clamping mechanism includes a horizontally arranged second limiting frame 6 connected to the side of the lifting slider 3, a threaded first clamping rod 7 disposed within the second limiting frame 6, two first clamping sliders 8 movably fitted against the inner wall of the second limiting frame 6, and a first clamping handwheel 9. One end of the first clamping rod 7 passes through the second limiting frame 6 and is connected to the first clamping handwheel 9. Each of the two first clamping sliders 8 has a first threaded clamping hole 10, which is threadedly engaged with the first clamping rod 7. The first clamping rod 7 is connected to the two first clamping sliders. The threads at the mating points of the first threaded clamping holes 10 are in opposite directions. Each of the two first clamping sliders 8 has a clamping component on its side. When the charging pile frame needs to be clamped, the first clamping handwheel 9 can be rotated to rotate the first clamping rod 7, causing the two first clamping sliders 8 to move away from each other. Then, the charging pile frame is transferred between the two clamping components. After that, the first clamping handwheel 9 is rotated in the opposite direction to move the two first clamping sliders 8 closer to each other until the clamping components contact the two opposite outer sides of the charging pile frame. Then, the clamping components clamp the charging pile frame, thus completing the clamping of the charging pile frame. The operation is simple.

[0030] refer to Figure 1 and Figure 2The clamping assembly includes two clamping arms 11 connected to the sides of the two first clamping sliders 8, two horizontally arranged third limiting frames 12 connected to the two clamping arms 11, a threaded second clamping rod 13 disposed within the third limiting frames 12, two second clamping sliders 14 movably fitted to the inner wall of the third limiting frames 12, two clamping claws 15 connected to the sides of the second clamping sliders 14, and a second clamping handwheel 16. One end of the second clamping rod 13 passes through the third limiting frame 12 and is connected to the second clamping handwheel 16. Each of the two second clamping sliders 14 has a second threaded clamping hole 41, which is threadedly engaged with the second clamping rod 13. The second clamping rod 13 clamps the second threaded parts of the two second clamping sliders 14. The threads at the mating points of holes 41 rotate in opposite directions. After the clamping claws 15 contact the two opposite outer sides of the charging pile frame, the second clamping handwheel 16 is rotated, causing the second clamping rod 13 to rotate. The two second clamping sliders 14 move closer to each other until the clamping claws 15 abut against the other two opposite outer sides of the charging pile frame, thus completing the clamping of the charging pile frame by the clamping assembly. The operation is simple, and the polishing auxiliary device is applicable to charging pile frames of different sizes, making it highly adaptable. When polishing multiple charging pile frames of the same size in the same batch, only minor adjustments to the clamping assembly and clamping mechanism are needed when changing charging pile frames. When polishing a batch of charging pile frames of different sizes, the clamping assembly and clamping mechanism are adjusted according to the size of the new charging pile frame. Therefore, the overall operation is simple and convenient.

[0031] refer to Figure 2 The clamping claw 15 includes a clamping plate 15a connected to the side of the second clamping slider 14 and two claw bodies 15b connected to the top and bottom of the clamping plate 15a. Multiple threaded adjustment holes 17 are evenly spaced at the ends of the two claw bodies 15b away from the clamping plate 15a. It also includes a support screw 18, which can be threaded into any one of the adjustment holes 17 and extends out of the adjustment hole 17. When the clamping claw 15 abuts against the other two opposite outer sides of the charging pile frame, the support screw 18 can be screwed into the corresponding adjustment hole 17 according to the position of the hollowed-out part of the charging pile frame. After extending out of the adjustment hole 17, the support screw 18 extends into the charging pile frame. This ensures that the clamping of the charging pile frame relies not only on the static friction between the clamping claw 15 and the frame, but also on the support of the support screw 18, making it more securely clamped. Furthermore, the multiple adjustment holes 17 allow it to be used with charging pile frames of different sizes.

[0032] refer to Figure 2The projection of the second clamping slider 14 onto a plane perpendicular to the length direction of the third limiting frame 12 is trapezoidal. The distance between the two opposite sides of the third limiting frame 12 near the clamping claw 15 is smaller than the distance away from the clamping claw 15. Thus, when clamping the charging pile frame, the charging pile frame exerts a lateral force on the second clamping slider 14. This shape design allows the second clamping slider 14 to transmit the lateral force to the third limiting frame 12 without acting on the second clamping rod 13, thereby preventing its deformation.

[0033] refer to Figure 4 and Figure 5 The third limiting frame 12 has connecting posts 19 on both sides, and each of the two clamping arms 11 has a connecting port 20. The connecting posts 19 are movably fitted to the inner wall of the connecting port 20. The connecting posts 19 are also provided with two limiting rings 21. The two sides of the clamping arms 11 are respectively movably fitted to the two limiting rings 21. A rotating handwheel 22 is provided at the end of one of the connecting posts 19. The third limiting frame 12 is also included as a locking component for locking the angle of the third limiting frame 12. In this way, the rotation of the third limiting frame 12 is realized. By rotating the rotating handwheel 22, the third limiting frame 12 can be rotated. After clamping the charging pile frame, the charging pile frame can also be flipped. After rotating to a suitable angle, the angle can be locked by the locking component, thus fixing the charging pile frame at the corresponding angle and position, which makes polishing and grinding operations more convenient.

[0034] refer to Figures 4 to 8The connecting post 19, equipped with a rotating handwheel 22, is hollow. The locking assembly includes two protrusions 23 opposite to each other on the connecting post 19, two protruding bodies 24 that can movably extend from the two protrusions 23, an elastic pulling body 25 connected to the protruding bodies 24, and a plurality of locking grooves 26 spaced apart on the inner wall of one of the connecting posts 20. The two protruding bodies 24 can be movably inserted into any two of the locking grooves 26. The surfaces of the protruding bodies 24 are smooth and without sharp corners. The surfaces of the inner wall of the connecting post 19 in contact with the protruding bodies 24 are also smooth and without sharp corners. The connecting post 19 has two opposite strip holes 27 and also includes a pulling rod 28 inserted into the two strip holes 27. The side of the pulling rod 28 is connected to the two pulling bodies 25. It also includes a locking spring 29 located in the connecting post 19. The two ends of the locking spring 29 are respectively connected to the inner wall of the end of the connecting post 19 and the pulling rod 28. When the charging pile frame needs to rotate... When the charging pile frame is rotated away from the clamping arm 11, the pulling rod 28 can be pulled away from the clamping arm 11, which will drive the two pulling bodies 25 and then the two extending bodies 24. The two extending bodies 24 will retract into the inner wall of the connecting column 19, and the locking spring 29 will be compressed. At this time, the rotating handwheel 22 can be turned to rotate the charging pile frame to a suitable angle. Then the pulling rod 28 can be released. The elastic force of the locking spring 29 will act on the pulling rod 28, causing it to move closer to the clamping arm 11, pushing the two pulling bodies 25 and then pushing the two extending bodies 24. Each extender 24 extends from the two strip holes 27 and inserts into two opposite locking grooves 26. At this time, the charging pile frame is locked at this angle. Since the locking grooves 26 are spaced apart, it is possible that when the pull rod 28 is released, the two extenders 24 fail to insert into either of the two locking grooves 26. In this case, the handwheel 22 can be turned slightly to fine-tune the angle of the charging pile frame, so that the two extenders 24 can be rotated to insert into the two opposite locking grooves 26.

[0035] refer to Figure 8 It also includes a pull ring 40. Both ends of the pull rod 28 are connected to the inner wall of the pull ring 40. When the handwheel 22 needs to be rotated, the pull ring 40 can be pulled close to the handwheel 22 simultaneously. At this time, the pull ring 40 sequentially pulls the pull rod 28, the pull body 25, and the extender 24. The two extenders 24 retract into the inner wall of the connecting column 19. Since the locking assembly does not lock the angle of the third limiting frame 12, the handwheel 22 can be rotated. When the locking assembly needs to lock the angle of the third limiting frame 12, the handwheel 22 is no longer rotated, and the pull ring 40 is released. Under the elastic force of the locking spring 29, the two extenders 24 extend from the two slots 27 and insert into the two opposing locking grooves 26, completing the locking. The pull ring 40 simplifies operation.

[0036] refer to Figure 3 The second limiting frame 6 also has a rotatable drive shaft 30, on which a first drive wheel 31 and a second drive wheel 32 are coaxially arranged. It also includes a first drive belt 33 and a second drive belt 34. The first drive belt 33 is wound around the outer wall of the hollow connecting column 19 and the first drive wheel 31. The second drive belt 34 is wound around the outer wall of the other connecting column 19 and the second drive wheel 32. In this way, when the rotating handwheel 22 drives the hollow connecting column 19 to rotate, the rotation can be transmitted to the first drive wheel 31 through the first drive belt 33, which drives the drive shaft 30 to rotate, and then drives the second drive wheel 32 to rotate. The rotation is transmitted to the other connecting column 19 through the second drive belt 34, thereby driving the third limiting frame 12 in the other clamping assembly to rotate synchronously without manual operation.

[0037] The rotation of the drive shaft 30 can be achieved through the following structure: two housings with holes at both ends are provided in the second limiting frame 6, and two rotating disks are connected to both ends of the drive shaft 30. The rotating disks are movably fitted with the inner wall of the housing, and the drive shaft 30 extends out through the hole in the housing.

[0038] refer to Figure 1 It also includes a placement body 35, the bottom of the first limiting frame 1 is connected to the placement body 35, and two opening plates 36 are provided at both ends of the placement body 35. The axes of the four opening plates 36 are obtuse angles with the axis of the placement body 35 and the angles are the same, so that the polishing auxiliary device can be stably placed on the ground. When polishing, the position of the clamping mechanism can also remain stable when clamping the charging pile frame, and the weight of the charging pile frame will not be enough to cause the polishing auxiliary device to tip over.

[0039] refer to Figure 1 The bottom of the four opening plates 36 is provided with self-locking rotatable casters 37, which allows the polishing auxiliary device to move according to the position of the charging pile frame, making it more labor-saving. After moving to the corresponding position, the casters 37 can be locked to fix the position of the polishing auxiliary device without affecting the polishing operation. When the charging pile frame is stacked in the warehouse, the clamping mechanism of the polishing auxiliary device can be used to clamp the charging pile frame from top to bottom in sequence, without the need for manual handling.

[0040] The rotation and self-locking of the caster wheel 37 are achieved by conventional structures in the prior art, and will not be elaborated here.

[0041] refer to Figure 3The first limiting frame 1 is also provided with two vertical rods 38, which are located on both sides of the lifting rod 2. The lifting slider 3 has two limiting holes 39, and the inner walls of the two limiting holes 39 are respectively in contact with the two vertical rods 38. This makes the position of the lifting slider 3 more stable. The vertical rods 38 can limit the position of the lifting slider 3. When the lifting slider 3 is raised and lowered, the side clamping mechanism clamps the charging pile frame and exerts lateral pressure on the lifting slider 3. The vertical rods 38 can distribute this pressure instead of transmitting it all to the lifting rod 2. The lifting rod 2 will not bend laterally after being subjected to force for a long time, so that the charging pile frame can be raised and lowered vertically stably.

[0042] It should also be noted that all terms such as "set up" and similar descriptive words in this application (especially the specification) indicate that two structures have or exist a connection relationship. However, the specific means by which the two are connected are not limited in detail, and are usually conventional connection methods. That is, the means should be understood as prior art and do not need to be elaborated. For example, "m is set up with n" only indicates that structure m has structure n, and whether the two are connected by welding, riveting, adhesive, or integral molding is within the scope of protection of this application. Similarly, "x is rotatably set up with y" only indicates that y and x can rotate relative to each other, and whether the two are connected by a bearing, or whether y directly passes through x and is rotatably connected to x, or other feasible methods, are all within the scope of protection of this application.

[0043] The above description is only a description of the preferred embodiment of the present utility model and is not intended to limit the scope of the present utility model in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A polishing auxiliary device, characterized in that, The device includes a vertically arranged first limiting frame (1), a threaded lifting rod (2) disposed within the first limiting frame (1), a lifting slider (3) that movably fits against the inner wall of the first limiting frame (1), and a lifting motor (4). The top of the lifting rod (2) passes through the first limiting frame (1) and is connected to the output shaft of the lifting motor (4). The lifting slider (3) is provided with a threaded lifting hole (5) that runs vertically through it. The lifting rod (2) is threadedly engaged with the threaded lifting hole (5). The side of the lifting slider (3) is provided with a clamping mechanism for clamping the charging pile frame. The clamping mechanism includes a second limiting frame (6) horizontally connected to the side of the lifting slider (3), a first clamping rod (7) with threads disposed in the second limiting frame (6), two first clamping sliders (8) movably fitted to the inner wall of the second limiting frame (6), and a first clamping handwheel (9). One end of the first clamping rod (7) passes through the second limiting frame (6) and is connected to the first clamping handwheel (9). Both first clamping sliders (8) are provided with first threaded clamping holes (10). The first threaded clamping holes (10) are threadedly engaged with the first clamping rod (7). The threads on the first clamping rod (7) that engage with the first threaded clamping holes (10) on the two first clamping sliders (8) have opposite rotation directions. Both first clamping sliders (8) are provided with clamping components on their sides. The clamping assembly includes two clamping arms (11) connected to the sides of the two first clamping sliders (8), two horizontally arranged third limiting frames (12) connected to the two clamping arms (11), a threaded second clamping rod (13) disposed in the third limiting frame (12), two second clamping sliders (14) movably fitted to the inner wall of the third limiting frame (12), two clamping claws (15) connected to the sides of the second clamping sliders (14), and a second clamping handwheel (16). Each of the two second clamping sliders (14) is provided with a second threaded clamping hole (41). The second threaded clamping hole (41) is threadedly engaged with the second clamping rod (13). The threads on the second clamping rod (13) that engage with the second threaded clamping holes (41) of the two second clamping sliders (14) have opposite rotation directions. One end of the second clamping rod (13) passes through the third limiting frame (12) and is connected to the second clamping handwheel (16). The third limiting frame (12) is provided with connecting posts (19) on both sides, and each of the two clamping arms (11) is provided with a connecting port (20). The connecting posts (19) are movably fitted with the inner wall of the connecting port (20). The connecting posts (19) are also provided with two limiting rings (21). The two sides of the clamping arms (11) are respectively movably fitted with the two limiting rings (21). A rotating handwheel (22) is provided at the end of one of the connecting posts (19). The third limiting frame (12) is also provided with a locking component for locking the angle of the third limiting frame (12).

2. The polishing auxiliary device according to claim 1, characterized in that, The clamping claw (15) includes a clamping plate (15a) connected to the side of the second clamping slider (14) and two claw bodies (15b) connected to the top and bottom of the clamping plate (15a). The two claw bodies (15b) are provided with a plurality of threaded adjustment holes (17) evenly spaced apart from the clamping plate (15a). It also includes a support screw (18), which can be threadedly engaged with any one of the adjustment holes (17) and extend out of the adjustment hole (17).

3. The polishing auxiliary device according to claim 1, characterized in that, The connecting post (19) equipped with a rotating handwheel (22) is hollow. The locking assembly includes two protrusions (23) opposite to each other on the connecting post (19), two protruding bodies (24) movably extending from the two protrusions (23), an elastic pulling body (25) connected to the protruding bodies (24), and a plurality of locking grooves (26) spaced apart on the inner wall of one of the connecting posts (20). The two protruding bodies (24) can be movably inserted into any two of the locking grooves (26). The surface of the protruding body (24) is... The surface is smooth and without any bends. The inner wall of the connecting post (19) is also smooth and without any bends at the contact point with the protruding body (24). The connecting post (19) has two opposing strip holes (27). It also includes a pull rod (28) inserted into the two strip holes (27). The side of the pull rod (28) is connected to the two pull bodies (25). It also includes a locking spring (29) located in the connecting post (19). The two ends of the locking spring (29) are respectively connected to the inner wall of the end of the connecting post (19) and the pull rod (28).

4. The polishing auxiliary device according to claim 3, characterized in that, The second limiting frame (6) is also rotatably provided with a transmission shaft (30). The transmission shaft (30) is coaxially provided with a first transmission wheel (31) and a second transmission wheel (32). It also includes a first transmission belt (33) and a second transmission belt (34). The first transmission belt (33) is wound around the outer wall of the hollow connecting column (19) and the first transmission wheel (31). The second transmission belt (34) is wound around the outer wall of the other connecting column (19) and the second transmission wheel (32).

5. The polishing auxiliary device according to claim 1, characterized in that, It also includes a placement body (35), the bottom of the first limiting frame (1) is connected to the placement body (35), and two opening plates (36) are provided at both ends of the placement body (35). The axes of the four opening plates (36) are all obtuse angles with the axis of the placement body (35) and the angles are the same.

6. The polishing auxiliary device according to claim 5, characterized in that, The bottom of the four opening plates (36) is provided with self-locking rotatable casters (37).

7. The polishing auxiliary device according to claim 1, characterized in that, The first limiting frame (1) is also provided with two vertical rods (38), which are located on both sides of the lifting rod (2). The lifting slider (3) has two limiting holes (39), and the inner walls of the two limiting holes (39) are respectively in contact with the two vertical rods (38).

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