High-strength packaging and transporting bolt assembly
By designing a bolt rod, bolt head, external thread limiting ring, and inclined snap-fit block structure, the problem of bolt shaking and offset during installation was solved, achieving efficient and stable bolt assembly installation and anti-loosening effect, and improving the reliability of packaging and transportation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU KETENG FASTENERS CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-04-21
AI Technical Summary
Existing screws are usually inserted directly into the housing during installation, lacking thread tightening and limiting functions. This results in the screw being in a free and loose state, making it difficult to accurately control its position. It is also prone to shaking and shifting during tightening, increasing installation difficulty and time costs, and affecting assembly efficiency.
A high-strength packaging and transportation bolt assembly was designed, including a bolt shank, bolt head, external threaded retaining ring, anti-loosening washer, and nut. The bolt shank is fixed by tightening the threaded retaining ring, and the nut is prevented from loosening by using a beveled locking block and locking groove structure, thereby enhancing the stability of the bolt assembly.
It provides stable bolt rod support and positioning, simplifies installation, reduces the difficulty of tightening nuts, improves assembly efficiency, and effectively prevents nuts from loosening during transportation, ensuring a secure fit.
Smart Images

Figure CN224149974U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of bolt assembly technology, and in particular to a high-strength packaging and transportation bolt assembly. Background Technology
[0002] In the field of packaging and transportation, ensuring the integrity and safety of packaging during transportation is crucial. Bolt assemblies, as key components for connecting and securing packaging structures, directly impact the reliability of transportation. Packaging and transportation bolt assemblies are widely used in the packaging and transshipment of various products, from everyday necessities to precision instruments and equipment. These assemblies are essential for securely connecting the various parts of the packaging, preventing damage due to vibration, collisions, and other factors during transport, thus protecting the internal products from harm. Currently, packaging and transportation bolt assemblies typically require the following technologies in practical applications:
[0003] 1. Reliable fastening technology: It can provide sufficient fastening force to ensure that the packaging structure will not loosen during transportation and maintain the integrity of the packaging;
[0004] 2. Convenient installation and disassembly technology: It allows operators to quickly install and disassemble bolt components during packaging and unpacking, improving work efficiency;
[0005] 3. Excellent anti-loosening technology: effectively prevents bolts from loosening due to external forces such as vibration and bumps during transportation, ensuring the stability of the packaging.
[0006] Currently, to secure packaging boxes, bolt assemblies are typically composed of bolts, nuts, and washers. Tightening the nuts secures the box to the door. However, this method has a significant drawback: existing bolts are usually simply inserted directly into the box without any threaded tightening or positioning. This leaves the bolt in a loose, unsupported state when tightening the nuts, failing to provide stable support and positioning. Operators not only struggle to accurately control the bolt's position but also experience wobbling and misalignment during tightening, making nut tightening difficult. This increases the complexity and time cost of installation, ultimately impacting assembly efficiency. Utility Model Content
[0007] To address the shortcomings of existing technologies, this utility model provides a high-strength packaging and transportation bolt assembly. It solves the problem that existing bolts are typically simply inserted directly into the box during installation, lacking a threaded tightening and limiting function. This results in the bolt being in a free and loose state when tightening the nut, failing to provide stable support and positioning. Operators not only find it difficult to accurately control the bolt's position, but the bolt is also prone to shaking and shifting during tightening, making nut tightening difficult. This increases the difficulty and time cost of installation, thus affecting assembly efficiency.
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A high-strength packaging and transportation bolt assembly includes a bolt shank, a bolt head fixedly connected to the outer surface of the bolt shank, an external threaded limiting ring fixedly connected to the outer surface of the bolt head, the external threaded limiting ring being disposed on the outer surface of the bolt shank, two anti-loosening washers being disposed on the outer surface of the bolt shank, and a nut being threadedly connected to the outer surface of the bolt shank.
[0010] Preferably, a set of inclined locking blocks are fixedly connected to the outer surface of each of the two anti-loosening washers near the nut.
[0011] Preferably, the two sets of inclined snap-fit blocks are respectively circumferentially and equally distributed on the outer surface of the two anti-loosening washers.
[0012] Preferably, both of the anti-loosening washers and nuts have a set of inclined locking grooves inside, and the inclined locking blocks correspond to the positions of the inclined locking grooves.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. When placing the bolt rod, the worker holds the bolt head and inserts the bolt rod into the bolt mounting groove. During insertion, the external threaded retaining ring is screwed into the bolt mounting groove by turning. This screwing provides a stable bolt rod for subsequent bolt assembly installation and fixation, making subsequent assembly operations more convenient. 2. When tightening the nut, the nut will rotate close to the two anti-loosening washers. First, the nut will push the two anti-loosening washers towards the bolt head by adhering to the inclined locking block on its outer surface. This continues until the two anti-loosening washers are in contact with the surface of the L-shaped positioning plate, reaching the apex. At this point, the nut still has some room to be tightened. Tightening the nut will allow the inclined locking block to be inserted into a set of inclined locking grooves. During transportation, when bumps and shaking occur, the force generated by the shaking will be transmitted to the two anti-loosening washers. The two anti-loosening washers can only move outward along the two inclined surfaces of the inclined locking block and the inclined locking groove, increasing the external force required for loosening. This ensures that the nut is always in a locked and fixed state when it reaches the destination, enhancing the strength of the bolt assembly in preventing loosening. Attached Figure Description
[0015] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0016] Figure 1This is a three-dimensional structural diagram of the present invention;
[0017] Figure 2 This is an exploded view of the nut connection according to this utility model;
[0018] Figure 3 This is an exploded view of the anti-loosening washer connection of this utility model.
[0019] Legend: 12. Bolt rod; 13. Bolt head; 14. External thread limit ring; 19. Anti-loosening washer; 21. Nut; 22. Angled snap-fit block; 23. Angled snap-fit groove. Detailed Implementation
[0020] This application provides a high-strength packaging and transportation bolt assembly, effectively solving the problem that existing bolts, when installed, are typically simply inserted directly into the box without a threaded tightening and limiting function. This leaves the bolt in a free and loose state when tightening the nut, unable to provide stable support and positioning. Operators not only find it difficult to accurately control the bolt's position, but the bolt is also prone to shaking and shifting during tightening, making it difficult to tighten the nut, increasing the difficulty and time cost of installation, and thus affecting assembly efficiency. When placing the bolt, the worker holds the bolt head and inserts the bolt into the bolt mounting groove. During insertion, the external threaded limiting ring is screwed into the bolt mounting groove by tightening. This threaded tightening provides a stable bolt for subsequent installation and fixing of the bolt assembly, making subsequent assembly operations more convenient. Example
[0021] like Figure 1 , Figure 2 and Figure 3As shown, the technical solution in this application embodiment effectively solves the problem that existing screws, during installation, are usually simply inserted directly into the housing without a threaded tightening limit function. This results in the screw being in a free and loose state when tightening the nut, unable to provide stable support and positioning. Operators not only find it difficult to accurately control the screw's position, but the screw is also prone to shaking and shifting during tightening, making it difficult to tighten the nut, increasing the difficulty and time cost of installation, and thus affecting assembly efficiency. The overall concept is as follows: A high-strength packaging and transport bolt assembly includes a bolt rod 12, with a bolt head 13 fixedly connected to the outer surface of the bolt rod 12. 3. An external threaded limiting ring 14 is fixedly connected to the outer surface of the bolt rod 12. The external threaded limiting ring 14 is set on the outer surface of the bolt rod 12. When placing the bolt rod 12, the operator holds the bolt head 13 and inserts the bolt rod 12 into the bolt mounting groove. During the insertion operation, the external threaded limiting ring 14 is screwed into the bolt mounting groove by turning. (The center of the bolt mounting groove is a cylindrical through groove larger than the outer diameter of the bolt rod 12, and an internal thread groove that matches the external threaded limiting ring 14 is provided at the outer end of the cylindrical through groove.) By turning the thread, a stable bolt rod 12 is provided for the subsequent installation and fixation of the bolt assembly, which is more convenient for subsequent assembly operations. Two anti-loosening washers 19 are provided on the outer surface of the bolt rod 12. A nut 21 (located at the outermost position) is threadedly connected to the outer surface of the bolt rod 12. The bolt assembly composed of the bolt rod 12, bolt head 13, two anti-loosening washers 19 and nut 21 fixes the transfer box and the box door, ensuring that the box door will not be accidentally opened during transportation.
[0022] Two anti-loosening washers 19 are each fixedly connected to a set of inclined locking blocks 22 at one end of the outer surface near the nut 21. The two sets of inclined locking blocks 22 are respectively circumferentially distributed on the outer surface of the two anti-loosening washers 19. Both the two anti-loosening washers 19 and the nut 21 are provided with a set of inclined locking grooves 23 (to facilitate the same manufacturing of the two anti-loosening washers and the interchange of their positions). The inclined locking blocks 22 and the inclined locking grooves 23 are positioned corresponding to each other. During the assembly of the bolt assembly, the two anti-loosening washers 19 are first initially assembled by aligning the inclined locking blocks 22 with the inclined locking grooves 23, and then inserted into the outer surface of the bolt shank 12. After insertion, the nut 21 connected to the threaded surface of the bolt shank 12 is tightened by using a wrench. The nut 21 presses against the two anti-loosening washers 19, and the two anti-loosening washers 19 press against the L-shaped positioning plate, thus completing the assembly and fixing. The two anti-loosening washers 19 play a role in preventing loosening in the bolt assembly. The two anti-loosening washers 19 are triangular in shape, and their inner and outer ends are machined into arc shapes by cutting. When tightening the nut 21, the nut 21 will rotate and approach the two anti-loosening washers 19, and first... By attaching the inclined locking block 22 to its outer surface, the two anti-loosening washers 19 are pushed towards the end of the bolt head 13 until the two anti-loosening washers 19 and the surface of the L-shaped positioning plate are in contact, thus reaching the top. At this time, the nut 21 still has a certain amount of room to be turned. By turning the nut 21, the inclined locking block 22 is fitted into a set of inclined locking grooves 23. When bumps and shaking occur during transportation, the force generated by the shaking will be transmitted to the two anti-loosening washers 19. The two anti-loosening washers 19 can only move outward along the two inclined surfaces of the inclined locking block 22 and the inclined locking grooves 23, increasing the external force required for loosening. This ensures that the nut 21 is always in a locked and fixed state when it reaches the destination, thus enhancing the strength of the bolt assembly to prevent loosening.
[0023] To address the problems existing in the prior art, this utility model provides a high-strength packaging and transportation bolt assembly. When placing the bolt rod 12, the worker holds the surface of the bolt head 13 and first inserts the bolt rod 12 into the bolt mounting groove. During the insertion operation, the external thread limiting ring 14 is screwed into the bolt mounting groove by screwing. By screwing the thread, a stable bolt rod 12 is provided for the subsequent installation and fixing of the bolt assembly, which is more convenient for subsequent assembly operations.
[0024] Working principle:
[0025] The first step involves transferring the required products using a transfer box. The transfer box has a rotating door, with a U-shaped handle fixed to its outer surface. An L-shaped positioning plate is fixed to one end of the door's outer surface near the U-shaped handle. A set of partitions is fixed to the inner surface of the transfer box, with packaging boxes mounted on the upper ends of each partition. The products to be packaged and transported are placed inside these boxes, which consist of a box body and a lid. After placement, the lid is closed to complete the packaging. The packaged boxes are then placed on the partitions, which separate and store multiple boxes. After storage, the worker holds the U-shaped handle and rotates the door to close it. The inner surface of the door will then fit snugly against the surface of the packaging boxes, reducing gaps and enhancing stability during storage and transport. The transfer box can then be moved to a transport vehicle for transport. After the door is closed, the L-shaped positioning plate and bolt mounting slots will be on the same horizontal line. The transfer box and door are secured by a bolt assembly consisting of bolt rod 12, bolt head 13, two anti-loosening washers 19, and nut 21, ensuring the door will not open accidentally during transport.
[0026] The second step involves placing the bolt rod 12. The worker holds the bolt head 13 and inserts the bolt rod 12 into the bolt mounting groove. During insertion, the external threaded retaining ring 14 is screwed into the bolt mounting groove (the center of the bolt mounting groove is a cylindrical through groove larger than the outer diameter of the bolt rod 12, with an internal threaded groove at the outer end that matches the external threaded retaining ring 14). This screwing provides a stable bolt rod 12 for subsequent bolt assembly, facilitating the assembly process. During bolt assembly, the two anti-loosening washers 19 are initially assembled by aligning them with the inclined locking block 22 and the inclined locking groove 23. They are then inserted into the outer surface of the bolt rod 12. After insertion, the nut 21 connected to the threaded surface of the bolt rod 12 is tightened using a wrench. The nut 21 presses against the two anti-loosening washers 19, which in turn press against the L-shaped positioning plate, thus completing the assembly. The two anti-loosening washers 19 in the bolt assembly serve to prevent loosening. They are triangular in shape, with their inner and outer ends machined into arc shapes. When tightening the nut 21, the nut 21 rotates towards the two anti-loosening washers 19. First, the nut 21 slides towards the bolt head 13 by adhering to the inclined locking block 22 on its outer surface, until the two anti-loosening washers 19 are in contact with the L-shaped positioning plate, reaching their apex. At this point, the nut 21 still retains its... Within a certain screwing space, the inclined locking block 22 is fitted into a set of inclined locking grooves 23 by screwing the nut 21. When bumps and shaking occur during transportation, the force generated by the shaking will be transmitted to the two anti-loosening washers 19. The two anti-loosening washers 19 can only move outward along the two inclined surfaces of the inclined locking block 22 and the inclined locking grooves 23, increasing the external force required for loosening. This ensures that the nut 21 is always locked and fixed when it reaches the destination, thus enhancing the strength of the bolt assembly to prevent loosening.
[0027] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A high-strength packing and transporting bolt assembly, comprising a bolt rod (12), the outer surface of the bolt rod (12) is fixedly connected with a bolt head (13), characterized in that, An external thread limiting ring (14) is fixedly connected to the outer surface of the bolt head (13). The external thread limiting ring (14) is set on the outer surface of the bolt rod (12). Two anti-loosening washers (19) are provided on the outer surface of the bolt rod (12). A nut (21) is threadedly connected to the outer surface of the bolt rod (12).
2. A high strength packaged shipping bolt assembly as defined in claim 1 wherein, A set of inclined snap-fit blocks (22) are fixedly connected to one end of the outer surface of each of the two anti-loosening washers (19) near the nut (21).
3. A high strength packaged shipping bolt assembly as defined in claim 2 wherein, The two sets of inclined snap-fit blocks (22) are respectively circumferentially and equally distributed on the outer surface of the two anti-loosening washers (19).
4. A high strength packaged shipping bolt assembly as defined in claim 3 wherein, Both of the anti-loosening washers (19) and nuts (21) have a set of inclined snap-fit grooves (23) inside, and the inclined snap-fit block (22) corresponds to the inclined snap-fit groove (23).