Anti-falling connecting bolt for tire and anti-loose device

Abstract

The utility model relates to connecting bolt and anti -loose device technical field, proposes a kind of anti -loose connecting bolt and anti -loose device for tire, it is connected with the supporting bolt piece and nut piece while guaranteeing the stable connection of upper structure and lower structure of machine, a kind of anti -loose device is proposed, the operation of upper structure and lower structure of machine is more simple and easy when forming connection operation, significantly improve the device practicality, also provide the convenience for subsequent disassembly, maintenance and recycling work, further strengthen its comprehensive use value, including bolt piece and nut piece, further including support body and anti -loose device, support body includes upper structure and lower structure of machine, the bottom of lower structure of machine is provided with nut groove, nut groove is used to provide fitting limit assembly for nut piece, bolt piece passes through upper structure and lower structure of machine in turn from top to bottom, nut piece is connected with bolt piece threadedly, anti -loose device includes flat washer and locking piece, flat washer is connected with locking piece by connecting piece.

Description

Technical Field

[0001] This utility model relates to the technical field of connecting bolts and anti-loosening devices, specifically to an anti-loosening connecting bolt and anti-loosening device for tires. Background Technology

[0002] As is well known, the support structure inside a tire is usually called the inner support structure. The inner support structure is a rigid support installed on the rim and located inside the tire. It provides support when the tire leaks air, allowing the vehicle to travel a certain distance. In order to improve the driving range and safety after the tire leaks air, most inner supports adopt a ring structure composed of at least two support units with the same structure. The multi-piece support structure needs to be bolted together. In order to ensure the connection quality of the support structure, this solution proposes a tire anti-loosening connecting bolt and anti-loosening device.

[0003] A search revealed that Chinese patent application number CN201710255717.4 discloses a device for preventing bolt loosening. The device generally comprises a first connecting body, a second connecting body, a first locking element, and a second locking element. The top of the first connecting body has two or more locking element placement slots, with a first through hole at the center of each slot. The bottom of the second connecting body has a nut placement slot concentric with the locking element placement slots, with a second through hole at the center of each slot. A nut is placed in the nut placement slot. A washer, the first locking element, and the second locking element are stacked sequentially from the inside out within the locking element placement slot. In use, the first connecting body and the second locking element restrict the rotation of the bolt head, while the nut placement slot on the second connecting body restricts the rotation of the nut, effectively preventing the bolt and nut from loosening.

[0004] While the aforementioned existing technical solutions can prevent bolt loosening, during assembly, the head of the anti-loosening pin needs to be passed through the anti-loosening hole on the second locking member and then bent or flattened. In reality, the anti-loosening pin has a small structural size, the space inside the tire is too narrow, and the material properties of the tire limit the bending or flattening of the anti-loosening pin. It is inevitable to introduce other rigid structures for auxiliary support during the bending or flattening process. Therefore, the subsequent bending or flattening operation of the anti-loosening pin is quite difficult. When the tire is scrapped and replaced, the recovery operation of the support unit is also quite laborious. Its practicality needs to be further improved. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a tire anti-loosening connecting bolt and anti-loosening device. While ensuring a stable connection between the upper and lower mechanical structures, it also provides an anti-loosening device with bolt and nut components, making the connection operation between the upper and lower mechanical structures simpler and easier, significantly improving the practicality of the device, and also facilitating subsequent disassembly, maintenance and recycling, further enhancing its comprehensive use value.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a tire anti-loosening connecting bolt and anti-loosening device, comprising a bolt and a nut, and further comprising a support body and an anti-loosening device. The support body comprises an upper mechanical structure and a lower mechanical structure. The bottom end of the lower mechanical structure is provided with a nut groove, which is used to provide a fitting and limiting assembly for the nut. The bolt passes through the upper and lower mechanical structures sequentially from top to bottom. The nut is threadedly connected to the bolt. The anti-loosening device includes a flat washer and a lock. The upper mechanical structure has a locking plate connected to the flat washer via a connecting plate. An anti-loosening groove is provided at the top of the upper mechanical structure. The flat washer, connecting plate, and locking plate are all located within the anti-loosening groove, arranged sequentially from bottom to top. The locking plate is used to limit the rotation of the bolt. A movement limiting element is provided within the anti-loosening groove. The movement limiting element is used to limit the movement of the bolt and matches the locking plate. An elastic insert for rotation limiting is provided between the upper and lower mechanical structures.

[0007] Based on the aforementioned scheme, the top of the bolt is provided with a top nut, the connecting piece is provided with a through-hole for inserting the top nut, the locking piece is provided with a wavy concave arc surface, the concave arc surface is used to provide rotation limit for the top nut, and the flat washer is provided with a circular hole for the bolt to pass through.

[0008] Based on the aforementioned scheme, the lateral movement limiting component includes a connecting ring and a top span frame. The connecting ring is fixedly connected to the top span frame. A rotating block is provided inside the top span frame. The bottom end of the rotating block is provided with a pressing surface that matches the top nut. Two protruding cut strips are provided inside the connecting ring. Two protruding plates are provided outside the connecting ring. Two cutting grooves are provided on the locking piece. The two cutting grooves match the two protruding cut strips respectively. Two rotating slots are provided inside the anti-loosening groove. The two rotating slots match the two protruding plates respectively. A magnetic attraction assembly is provided between the connecting ring and the connecting piece.

[0009] Based on the aforementioned scheme, the magnetic attraction assembly includes two internal permanent magnets and two external permanent magnets. The two internal permanent magnets are respectively matched with the two external permanent magnets. The connecting ring is provided with two internal insertion holes, which are respectively used for the insertion of the two external permanent magnets. The connecting piece is provided with two external insertion holes, which are respectively used for the insertion of the two internal permanent magnets. The flat washer and the locking piece are both made of materials that can be magnetically attracted by magnets.

[0010] Based on the aforementioned scheme, the top span frame is provided with a weight-reducing strip notch, and each of the two protruding cut strips is provided with a side insertion opening, which is matched with two internal permanent magnets respectively.

[0011] Based on the aforementioned scheme, the weight-reducing strip notch is located on one side close to the center of the mechanical structure.

[0012] Based on the aforementioned scheme, the elastic insert includes a limiting ring, a spring fixedly connected to the limiting ring, a prismatic cylinder fixedly connected to the bottom end of the connecting ring, the spring being fitted over the prismatic cylinder, an annular groove and a prismatic groove being provided on the upper mechanical structure, the annular groove communicating with the bottom end of the anti-loosening groove, the prismatic groove communicating with the annular groove, the prismatic cylinder passing through the prismatic groove, the spring being located within the annular groove, a limiting prismatic groove matching the prismatic cylinder being provided at the top end of the lower mechanical structure, and a flat annular surface matching the flat washer being provided at the top end of the limiting ring.

[0013] Based on the aforementioned solution, the anti-loosening groove is a regular polygonal structure and has a concave design.

[0014] Based on the aforementioned scheme, the anti-loosening groove has at least one beveled edge to facilitate the disassembly of the anti-loosening device.

[0015] Based on the aforementioned scheme, the shape of the flat gasket is consistent with the anti-loosening groove.

[0016] Compared with the prior art, this utility model provides a tire anti-loosening connecting bolt and anti-loosening device, which has the following beneficial effects:

[0017] (1). In this utility model, by equipping the anti-loosening device, a structure for limiting the rotation of the bolt can be provided, thereby limiting the rotational freedom of the threaded connection between the bolt and the nut, and ensuring the reliability of the connection between the two.

[0018] (2). In this utility model, the design of the axial movement limiting component can be matched with the bolt component to form an axial limit, thereby preventing the bolt component from axially moving, which further improves the connection reliability between the bolt component and the nut component. The installation and disassembly are relatively simple and more practical.

[0019] (3). In this utility model, by equipping the elastic insert, the connection between the upper and lower mechanical structures can be rotated and structurally reinforced. On the one hand, it can improve the reliability of the connection between the upper and lower mechanical structures, and on the other hand, it can provide effective protection for the bolts. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a partial cross-section of the present invention;

[0021] Figure 2 This utility model Figure 1 A magnified schematic diagram of the partial structure at point A in the middle;

[0022] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the relative cooperation between the upper and lower mechanical structures of this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the mating of the flat washer, locking piece, and connecting ring of this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the bolt, nut, and top nut assembly of this utility model;

[0025] Figure 6 This is a three-dimensional structural diagram showing the assembly of the flat gasket, locking piece, and connecting piece of this utility model.

[0026] Figure 7 This is a three-dimensional structural diagram of the connection ring, top span frame, and protruding cut strip of this utility model.

[0027] Figure 8 This is a three-dimensional structural schematic diagram showing a partial cross-sectional view of the mechanical structure of this utility model;

[0028] Figure 9 This is a three-dimensional structural diagram of the matching limiting ring and prismatic cylinder of this utility model;

[0029] Figure 10 This is a three-dimensional structural diagram of the entire utility model;

[0030] Figure 11 This is a three-dimensional structural schematic diagram of the present invention from a partial cross-sectional view and from below.

[0031] Figure 12 This is a partial cross-sectional, bottom-view, three-dimensional structural diagram of the relative cooperation between the upper and lower mechanical structures of this utility model.

[0032] Figure 13 This is an exploded three-dimensional structural diagram of the locking plate, connecting ring, and pressing surface of this utility model.

[0033] Figure 14 This is a three-dimensional structural schematic diagram of the bottom cross-section of the connecting ring of this utility model;

[0034] Figure 15 This is a three-dimensional structural diagram of the entire utility model from a rear-view perspective.

[0035] In the diagram: 1. Bolt; 2. Nut; 3. Upper mechanical structure; 4. Lower mechanical structure; 5. Nut groove; 6. Flat washer; 7. Locking plate; 8. Connecting plate; 9. Anti-loosening groove; 10. Top nut; 11. Through port; 12. Concave arc surface; 13. Circular hole; 14. Connecting ring; 15. Top span frame; 16. Rotating block; 17. Pressing surface; 18. Raised cut strip; 19. Raised plate; 20. Cut groove; 21. Rotating slot; 22. Internal permanent magnet; 23. External permanent magnet; 24. Internal insertion hole; 25. External insertion hole; 26. Weight reduction strip notch; 27. Side insertion opening; 28. Limiting ring; 29. ​​Elastic spring; 30. Prismatic tube; 31. Annular groove; 32. Prismatic groove; 33. Limiting prismatic groove; 34. Flat annular surface; 35. Beveled edge. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] For examples, please refer to Figures 1-15A tire anti-loosening connecting bolt and anti-loosening device includes a bolt 1 and a nut 2, a support body, and an anti-loosening device. The support body includes an upper mechanical structure 3 and a lower mechanical structure 4. The bottom end of the lower mechanical structure 4 is provided with a nut groove 5, which is used to provide a fitting and limiting assembly for the nut 2. The bolt 1 passes through the upper mechanical structure 3 and the lower mechanical structure 4 sequentially from top to bottom. The nut 2 is threadedly connected to the bolt 1. The anti-loosening device includes a flat washer 6 and a locking plate 7. The flat washer 6 is connected to the locking plate 7 through a connecting plate 8. The top end of the upper mechanical structure 3 is provided with an anti-loosening groove 9. The flat washer 6, the connecting plate 8, and the locking plate 7 are all located in the anti-loosening groove 9, and the flat washer 6, the connecting plate 8, and the locking plate 7 are arranged sequentially from bottom to top. The top end of the bolt 1 is provided with a top nut 10. The connecting piece 8 is provided with a through port 11 for inserting the top nut 10. The locking piece 7 is provided with a wavy concave arc surface 12, which is used to provide rotation limit for the top nut 10. The flat washer 6 is provided with a circular hole 13 for the bolt 1 to pass through. The locking piece 7 is used to limit the rotation of the bolt 1. With the anti-loosening device, the bolt 1 can be provided with a rotation limit structure, thereby limiting the rotational freedom of the threaded connection between the bolt 1 and the nut 2, and ensuring the reliability of the connection between the two. The anti-loosening groove 9 is a regular polygonal structure and is concave. The edge of the anti-loosening groove 9 has at least one beveled opening 35, which facilitates the disassembly of the anti-loosening device. The shape of the flat washer 6 is the same as that of the anti-loosening groove 9. When the flat washer 6 is inserted into the anti-loosening groove 9, it can be rotated.

[0038] It should be further explained that a movement limiting component is provided inside the anti-loosening groove 9. The movement limiting component is used to limit the movement of the bolt component 1, and it matches the locking plate 7. The movement limiting component includes a connecting ring 14 and a top spanning frame 15. The connecting ring 14 is fixedly connected to the top spanning frame 15. A rotating block 16 is provided inside the top spanning frame 15. The bottom end of the rotating block 16 is provided with a pressing surface 17 that matches the top nut 10. Two protruding cutting strips 18 are provided inside the connecting ring 14, and two protruding plates 19 are provided outside the connecting ring 14. Two cutting grooves 20 are provided on the locking plate 7. Two cutting grooves 20 respectively match two raised cutting strips 18. Two rotating slots 21 are provided in the anti-loosening groove 9, and the two rotating slots 21 respectively match two raised plates 19. A magnetic attraction assembly is provided between the connecting ring 14 and the connecting piece 8. The magnetic attraction assembly includes two internal permanent magnets 22 and two external permanent magnets 23, with the two internal permanent magnets 22 respectively matching the two external permanent magnets 23. The connecting ring 14 is provided with two internal insertion holes 24, which are used for inserting the two external permanent magnets 23. The connecting piece 8 is provided with... Two external insertion holes 25 are used for inserting two internal permanent magnets 22. The flat washer 6 and locking plate 7 are both made of a material that can be magnetically attracted by magnets. Through the design of the movement limiting component, it can form an axial constraint with the bolt component 1, preventing axial movement of the bolt component 1, thereby further improving the connection reliability between the bolt component 1 and the nut component 2. Installation and disassembly are relatively simple and more practical. The top span frame 15 is provided with a weight-reducing strip notch 26, which is located on the side near the center of the mechanical structure 3. After the lateral movement limiting component is installed, the weight-reducing strip notch 26 on the top span frame 15 will cause the overall center of gravity of the top span frame 15 to deviate to the side away from the center of the mechanical upper structure 3. When the mechanical upper structure 3 is under centrifugal force, the overall center of gravity shift of the top span frame 15 can make the top span frame 15 stand in a relatively stable posture, ensuring the stability of the connection structure. Both protruding cut strips 18 are provided with side insertion openings 27. The two side insertion openings 27 are matched with the two internal permanent magnets 22 respectively, realizing the embedding and limiting of the two internal permanent magnets 22.

[0039] Furthermore, an elastic insert for rotational limiting is provided between the upper mechanical structure 3 and the lower mechanical structure 4. The elastic insert includes a limiting ring 28, to which an elastic spring 29 is fixedly connected. A prismatic cylinder 30 is fixedly connected to the bottom end of the connecting ring 14. The elastic spring 29 is fitted over the prismatic cylinder 30. The upper mechanical structure 3 has an annular groove 31 and a prismatic groove 32. The annular groove 31 communicates with the bottom end of the anti-loosening groove 9, and the prismatic groove 32 communicates with the annular groove 31. The prismatic cylinder 30 passes through... The prismatic groove 32 and the elastic spring 29 are located in the annular groove 31. The top of the lower mechanical structure 4 is provided with a limiting prismatic groove 33 that matches the prismatic tube 30. The top of the limiting ring 28 is provided with a flat annular surface 34 that matches the flat washer 6. With the provision of the elastic insert, the connection between the upper mechanical structure 3 and the lower mechanical structure 4 can be rotated and structurally reinforced. On the one hand, it can improve the reliability of the connection between the upper mechanical structure 3 and the lower mechanical structure 4. On the other hand, it can also provide effective protection for the bolt 1.

[0040] In summary, the working principle of the anti-loosening connecting bolt and anti-loosening device for this tire is as follows: During assembly and use, the lower mechanical structure 4 and the nut 2 are first positioned and assembled. The nut 2 is placed into the nut groove 5 at the bottom of the lower mechanical structure 4. The engagement between the nut groove 5 and the nut 2 achieves the limiting and fixing of the nut 2, preventing rotation of the nut 2 during subsequent threaded connection. This provides a stable mating basis for the tightening of the bolt 1. The principle of this part is to lock the degree of freedom of the nut 2 through the limiting effect of the nut groove 5, laying the foundation for the subsequent construction of the anti-loosening system. Subsequently... Pre-connect the upper mechanical structure 3 and the lower mechanical structure 4, aligning the upper mechanical structure 3 with the lower mechanical structure 4. Next, pre-install the elastic insert with the upper mechanical structure 3, aligning the prismatic cylinder 30 with the prismatic groove 32 of the upper mechanical structure 3, allowing the prismatic cylinder 30 to pass through the annular groove 31 from top to bottom and be inserted into the prismatic groove 32, ensuring the elastic spring 29 is completely placed in the annular groove 31. Then, insert the flat washer 6 into the anti-loosening groove 9 and insert the bolt 1 into the circular hole 13, allowing the bolt 1 to pass through the limiting ring 28, the prismatic cylinder 30, and the lower mechanical structure 4 sequentially from top to bottom, ensuring the bolt 1... Align the threaded end of the bolt with the nut 2 pre-inserted into the nut groove 5, and use a wrench or other tools to rotate the top nut 10 of the bolt 1 to form a threaded connection between the bolt 1 and the nut 2 and gradually tighten it. During this process, as the bolt 1 falls, the flat washer 6 will fall further into the anti-loosening groove 9 until the flat washer 6 is in tight contact with the bottom surface of the anti-loosening groove 9, stopping the rotation drive of the bolt 1. During the falling process of the flat washer 6, it will also press down on the flat annular surface 34, so that the bottom end of the prismatic cylinder 30 is accurately inserted into the limiting prismatic groove 33 at the top of the mechanical lower structure 4, through the prismatic groove 30. The fitting of the cylindrical tube 30 and the limiting groove 33 achieves the initial positioning and rotation limit of the upper mechanical structure 3 and the lower mechanical structure 4. In this state, the elastic spring 29 will be compressed in the annular groove 31. At this time, the elastic insert not only completes the auxiliary positioning of the upper and lower mechanical structures, but also forms an outer protection for the bolt 1 to be installed later, reducing the impact of external force on the bolt 1. Since the shape of the flat washer 6 is completely consistent with the anti-loosening groove 9 with the concave design of the regular polygon, the flat washer 6 will be restricted from rotating by the anti-loosening groove 9 after being placed in the anti-loosening groove 9, providing a fixed foundation for the subsequent installation of the anti-loosening device.

[0041] Next, the anti-loosening device is installed. A connecting piece 8 is placed above the flat washer 6, followed by a locking piece 7 above the connecting piece 8. During operation, the through-hole 11 on the connecting piece 8 allows the top nut 10 to pass through, while the wavy concave surface 12 inside the locking piece 7 tightly fits against the outer surface of the top nut 10. The wavy structure of the concave surface 12 limits the rotation of the top nut 10, preventing the bolt 1 from rotating. Simultaneously, the regular polygonal structure of the anti-loosening groove 9 further restricts the overall rotation of the flat washer 6, connecting piece 8, and locking piece 7, forming an anti-loosening barrier. The beveled opening 35 at the edge of the anti-loosening groove 9 requires… Oriented in a direction that facilitates subsequent disassembly, providing convenience for removing the anti-loosening device during subsequent maintenance, the internal permanent magnet 22 inside the connecting piece 8 forms a magnetic attraction between the flat washer 6 and the locking piece 7, thereby limiting the locking piece 7 relative to the flat washer 6. After the anti-loosening device is installed, the movement limiting component is assembled. This component is used to limit the axial movement of the bolt 1, further enhancing the anti-loosening effect. During assembly, the two external permanent magnets 23 are first inserted into the two internal insertion holes 24 respectively. During the insertion process, the opposite sides of the external permanent magnets 23 and the internal permanent magnets 22 should be opposite magnetic poles to ensure that the external permanent magnets 23 and the internal permanent magnets 22 are in harmony. The magnetic attraction between 22 is then used to align the connecting ring 14 with the locking piece 7, so that the connecting ring 14 is fitted relative to the locking piece 7. Next, the connecting ring 14 is rotated relative to the locking piece 7 to adjust its position, causing the two protruding strips 18 on the inner side of the connecting ring 14 to respectively embed into the two cutting grooves 20. In this state, the two protruding plates 19 on the outer side of the connecting ring 14 are respectively inserted into the two rotating slots 21. Through the engagement of the protruding strips 18 with the cutting grooves 20 and the protruding plates 19 with the rotating slots 21, the positioning and fixing of the movement limiting component with the locking piece 7 and the anti-loosening groove 9 are achieved, preventing the movement limiting component from shifting. At this time, the internal permanent magnet 22... The external permanent magnet 23 also enters the closest state, realizing the auxiliary rotation limit of the connecting ring 14. The pressing surface 17 at the bottom of the rotating block 16 is tightly attached to the top of the top nut 10, forming an axial limit on the bolt 1, preventing the bolt 1 from moving up and down during operation, and also facilitating the installation and removal of the connecting ring 14. The weight-reducing strip notch 26 on the top span frame 15 needs to face the side closer to the center of the mechanical structure 3, so that the overall center of gravity of the top span frame 15 shifts away from the center, ensuring that the top span frame 15 can maintain a stable posture when the mechanical structure 3 generates centrifugal force at high speed, and ensuring the reliability of the overall connection structure.

[0042] Bolt 1 achieves dual limiting of rotation and axial movement through an anti-loosening device and a movement limiting device, which not only ensures the stability of the connection but also avoids the cumbersome operation of retracting the bolts in traditional anti-loosening structures. During assembly, it is important to ensure that all components are precisely aligned to avoid deformation or damage caused by forced assembly. The permanent magnets of the magnetic attraction component must be distinguished by their front and back sides to ensure the attraction effect. The tightening torque of bolt 1 must strictly follow the design standards. Excessive torque can easily damage the threads, while insufficient torque cannot guarantee the connection's firmness. During subsequent disassembly and maintenance, the anti-loosening device can be removed using the beveled opening 35 of the anti-loosening groove 9, and the movement limiting device can be disassembled by separating the magnetic attraction component. No destructive operation is required, which facilitates the recycling and reuse of the support unit. The device is easy to assemble and maintain.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tire anti-loosening connecting bolt and anti-loosening device, comprising a bolt (1) and a nut (2), characterized in that, It also includes a support body and an anti-loosening device. The support body includes an upper mechanical structure (3) and a lower mechanical structure (4). The bottom end of the lower mechanical structure (4) is provided with a nut groove (5). The nut groove (5) is used to provide a fitting and limiting assembly for the nut (2). The bolt (1) passes through the upper mechanical structure (3) and the lower mechanical structure (4) from top to bottom. The nut (2) is threadedly connected to the bolt (1). The anti-loosening device includes a flat washer (6) and a locking plate (7). The flat washer (6) is connected to the locking plate (7) through a connecting piece (8). The upper mechanical structure... The top of the structure (3) is provided with an anti-loosening groove (9). The flat washer (6), connecting piece (8) and locking piece (7) are all located in the anti-loosening groove (9). The flat washer (6), connecting piece (8) and locking piece (7) are arranged in order from bottom to top. The locking piece (7) is used to limit the rotation of the bolt (1). The anti-loosening groove (9) is provided with a movement limiting piece. The movement limiting piece is used to limit the bolt (1). The movement limiting piece matches the locking piece (7). An elastic insert for rotation limiting is provided between the upper mechanical structure (3) and the lower mechanical structure (4).

2. The anti-loosening connecting bolt and anti-loosening device for tires according to claim 1, characterized in that, The top of the bolt (1) is provided with a top nut (10), the connecting piece (8) is provided with a through port (11) for inserting the top nut (10), the locking piece (7) is provided with a wavy concave arc surface (12), the concave arc surface (12) is used to provide rotation limit for the top nut (10), and the flat washer (6) is provided with a circular hole (13) for the bolt (1) to pass through.

3. The anti-loosening connecting bolt and anti-loosening device for tires according to claim 2, characterized in that, The sway limiting component includes a connecting ring (14) and a top span frame (15). The connecting ring (14) is fixedly connected to the top span frame (15). A rotating block (16) is provided inside the top span frame (15). The bottom end of the rotating block (16) is provided with a pressing surface (17) that matches the top nut (10). Two protruding cutting strips (18) are provided inside the connecting ring (14). Two protruding plates (19) are provided outside the connecting ring (14). Two cutting grooves (20) are provided on the locking piece (7). The two cutting grooves (20) match the two protruding cutting strips (18) respectively. Two rotating slots (21) are provided inside the anti-loosening groove (9). The two rotating slots (21) match the two protruding plates (19) respectively. A magnetic suction assembly is provided between the connecting ring (14) and the connecting piece (8).

4. The anti-loosening connecting bolt and anti-loosening device for tires according to claim 3, characterized in that, The magnetic attraction assembly includes two internal permanent magnets (22) and two external permanent magnets (23). The two internal permanent magnets (22) are matched with the two external permanent magnets (23) respectively. The connecting ring (14) is provided with two internal insertion holes (24), which are used for the insertion of the two external permanent magnets (23) respectively. The connecting piece (8) is provided with two external insertion holes (25), which are used for the insertion of the two internal permanent magnets (22) respectively. The flat gasket (6) and the locking piece (7) are both made of materials that can be magnetically attracted by magnets.

5. The anti-loosening connecting bolt and anti-loosening device for tires according to claim 4, characterized in that, The top span frame (15) is provided with a weight-reducing strip notch (26), and the two raised strips (18) are provided with side insertion openings (27), which are respectively matched with two internal permanent magnets (22).

6. The anti-loosening connecting bolt and anti-loosening device for tires according to claim 5, characterized in that, The weight-reducing strip notch (26) is located on one side near the center of the mechanical structure (3).

7. The anti-loosening connecting bolt and anti-loosening device for tires according to claim 6, characterized in that, The elastic insert includes a limiting ring (28), which is fixedly connected to an elastic spring (29). The bottom end of the connecting ring (14) is fixedly connected to a prismatic tube (30). The elastic spring (29) is fitted outside the prismatic tube (30). The upper mechanical structure (3) is provided with an annular groove (31) and a prismatic groove (32). The annular groove (31) is connected to the bottom end of the anti-loosening groove (9). The prismatic groove (32) is connected to the annular groove (31). The prismatic tube (30) passes through the prismatic groove (32). The elastic spring (29) is located inside the annular groove (31). The top end of the lower mechanical structure (4) is provided with a limiting prismatic groove (33) that matches the prismatic tube (30). The top end of the limiting ring (28) is provided with a flat annular surface (34) that matches the flat gasket (6).

8. The anti-loosening connecting bolt and anti-loosening device for tires according to claim 7, characterized in that, The anti-loosening groove (9) is a regular polygonal structure and is designed to be concave.

9. A tire anti-loosening connecting bolt and anti-loosening device according to claim 8, characterized in that, The anti-loosening groove (9) has at least one beveled opening (35) on its side, which facilitates the disassembly of the anti-loosening device.

10. A tire anti-loosening connecting bolt and anti-loosening device according to claim 9, characterized in that, The shape of the flat gasket (6) is consistent with that of the anti-loosening groove (9).

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