A high-toughness, wear-resistant bolt for rail transit

Abstract

This utility model relates to the field of rail transit technology and provides a high-toughness, wear-resistant bolt for rail transit, including a screw rod. A reinforcing structure is fixed to the top of the screw rod, and a protective structure is provided on the outer side of the top of the screw rod. The protective structure includes a washer disposed on the outer side of the top of the screw rod. By providing the protective structure and fitting the washer onto the outside of the screw rod, the two sets of washers are positioned on both sides of the rail connection component. During installation, the two sides of the washer undergo elastic deformation, allowing the upper fixing block and the fixing nut to fix the rail connection component together through the screw rod. During train operation, when vibration, impact, and alternating loads occur, the washer prevents the screw rod from loosening and breaking. The reinforcing rib further enhances the toughness of the washer, thereby extending the service life of the rail transit bolt.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, and in particular to a high-toughness and wear-resistant bolt for rail transit. Background Technology

[0002] With the acceleration of urbanization and the growth of people's demand for efficient travel, the rail transit industry has ushered in a period of rapid development. Whether it is urban subways, light rail, high-speed railways, or heavy-haul railways, they are constantly expanding and upgrading. The high-speed and heavy-haul development trend of rail transit has put forward higher requirements for the structural strength and stability of the track. As a key component for connecting and fastening rail transit equipment and parts, the performance and quality of rail transit bolts directly affect the safety of rail transit. Therefore, a high-toughness and wear-resistant rail transit bolt is used. Bolts used in rail transit are exposed to the natural environment for a long time, and have to endure sun, rain, wind and snow erosion, etc., making their working conditions relatively harsh. At the same time, the passing of trains will generate dynamic effects, including vibration, impact and alternating loads, which can easily cause the bolts to loosen and break, resulting in a short service life. Utility Model Content

[0003] The purpose of this invention is to provide a high-toughness, wear-resistant bolt for rail transit, in order to solve the problem of poor toughness in existing rail transit bolts.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a high-toughness and wear-resistant bolt for rail transit, including a screw rod; The top end of the screw is fixed with a reinforcing structure; A protective structure is provided on the outer side of the top of the screw. The protective structure includes a gasket provided on the outer side of the top of the screw. The gasket has mounting holes inside and reinforcing ribs are evenly fixed on the inner side of the gasket. A fixing structure is provided on the outer side of the bottom of the screw.

[0005] Preferably, the reinforcing structure includes an upper fixing block, a reserved groove, a connecting block, and a connecting groove. The upper fixing block is disposed on the top of the screw. A reserved groove is provided at the middle position of the top of the upper fixing block. A connecting groove is provided at the middle position of the bottom of the upper fixing block. Connecting blocks are fixed at the corner positions inside the connecting groove.

[0006] Preferably, the top view cross-sections of both the reserved groove and the connecting groove are hexagonal, and the top view cross-sectional area of ​​the reserved groove is smaller than that of the connecting groove.

[0007] Preferably, one side of the connecting block is fixedly connected to the outer side wall of the screw, and the inner side wall of the bottom of the upper fixing block is fixedly connected to the top end of the screw.

[0008] Preferably, the gaskets are provided in two sets, which are symmetrically distributed vertically. The side view of the reinforcing ribs is arc-shaped, and the reinforcing ribs are evenly distributed on the inner sidewall of the gaskets. The gaskets are sleeved on the outside of the screw through the mounting holes.

[0009] Preferably, the fixing structure includes a protective layer, a fixing nut, and a self-locking nut. The protective layer is fixed to the outer side of the bottom of the screw, and the outer side of the protective layer is threaded with a fixing nut. The outer side of the protective layer at the bottom of the fixing nut is threaded with a self-locking nut.

[0010] Preferably, the protective layer is a non-shedding adhesive, and the protective layer is uniformly coated on the outer wall of the screw.

[0011] The advantages of this utility model for providing a high-toughness, wear-resistant bolt for rail transit are as follows: By incorporating a protective structure, gaskets are fitted onto the outside of the screw, positioning two sets of gaskets on either side of the track connection component. During installation, the gaskets undergo elastic deformation on both sides, allowing the upper fixing block and the fixing nut to secure the track connection component together via the screw. During train operation, vibrations, impacts, and alternating loads prevent the screw from loosening or breaking. Furthermore, the reinforcing ribs enhance the toughness of the gaskets, thereby extending the service life of the rail transit bolts. By incorporating a reinforced structure, the fixing area between the upper fixing block and the screw is increased under the action of the connecting block, making the upper fixing block and the screw more firmly fixed. When the outer wall of the upper fixing block is worn, the screw can be disassembled and assembled using the pre-reserved slot and an internal hex wrench, thereby improving the applicability of this rail transit bolt in use. By setting a fixed structure, a protective layer is evenly applied to the outer wall of the bottom of the screw. Then, the fixing nut and the self-locking nut are threaded onto the bottom of the screw in sequence. Under the action of the protective layer, it is effectively prevented that the fixing nut and the self-locking nut will fall off, loosen or deform from the screw during use, making the fixing nut and the self-locking nut more firm, stable and durable, thereby improving the wear resistance of the bolt for rail transit during use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 This is a schematic diagram of the front cross-sectional structure of this utility model; Figure 3 This is a schematic diagram of the exploded front view of this utility model; Figure 4 This is a schematic diagram of the exploded structure of this utility model from a bottom view; Figure 5 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0013] The following are the annotations in the figure: 1. Screw; 2. Reinforcing structure; 21. Upper fixing block; 22. Reserved groove; 23. Connecting block; 24. Connecting groove; 3. Protective structure; 31. Gasket; 32. Mounting hole; 33. Reinforcing rib; 4. Fixing structure; 41. Protective layer; 42. Fixing nut; 43. Self-locking nut. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-5 The present invention provides a high-toughness and wear-resistant bolt for rail transit, including a screw 1.

[0016] Reference Figure 1 , Figure 2 and Figure 4 As shown, a reinforcing structure 2 is fixed to the top of the screw 1. The reinforcing structure 2 includes an upper fixing block 21, a reserved groove 22, a connecting block 23, and a connecting groove 24. The upper fixing block 21 is located at the top of the screw 1. A reserved groove 22 is provided at the middle position of the top of the upper fixing block 21. A connecting groove 24 is provided at the middle position of the bottom of the upper fixing block 21. A connecting block 23 is fixed at the corner position inside the connecting groove 24. The top view cross-section of the reserved groove 22 and the connecting groove 24 are both hexagonal. The top view cross-sectional area of ​​the reserved groove 22 is smaller than that of the connecting groove 24. One side of the connecting block 23 is fixedly connected to the outer side wall of the screw 1. The inner side wall of the bottom of the upper fixing block 21 is fixedly connected to the top of the screw 1.

[0017] The connecting block 23 increases the fixing area between the upper fixing block 21 and the screw 1, making the upper fixing block 21 and the screw 1 more firmly fixed. When the outer wall of the upper fixing block 21 is worn, the screw 1 can be disassembled and assembled by using the reserved slot 22 and an internal hex wrench.

[0018] Reference Figures 3-5As shown, a protective structure 3 is provided on the outer side of the top of the screw 1. The protective structure 3 includes a gasket 31 provided on the outer side of the top of the screw 1. Each gasket 31 has an installation hole 32. Reinforcing ribs 33 are evenly fixed on the inner side of the gasket 31. There are two sets of gaskets 31, which are symmetrically distributed vertically. The side view of the reinforcing ribs 33 is arc-shaped. The reinforcing ribs 33 are evenly distributed on the inner side wall of the gasket 31. The gasket 31 is sleeved on the outer side of the screw 1 through the installation hole 32.

[0019] The gasket 31 is fitted onto the outside of the screw 1, so that the two sets of gaskets 31 are located on both sides of the track connecting component. During installation, the two sides of the gasket 31 undergo elastic deformation, so that the upper fixing block 21 and the fixing nut 42 fix the track connecting component to each other through the screw 1. When vibration, impact and alternating load are generated during train operation, the gasket 31 prevents the screw 1 from loosening and breaking. Under the action of the reinforcing rib 33, the toughness of the gasket 31 is further enhanced.

[0020] Reference Figures 1-4 As shown, a fixing structure 4 is provided on the outer side of the bottom of the screw 1. The fixing structure 4 includes a protective layer 41, a fixing nut 42 and a self-locking nut 43. The protective layer 41 is fixed to the outer side of the bottom of the screw 1. The outer side of the protective layer 41 is threadedly connected to the fixing nut 42. The outer side of the protective layer 41 at the bottom of the fixing nut 42 is threadedly connected to the self-locking nut 43. The protective layer 41 is made of anti-loose adhesive and is evenly coated on the outer wall of the screw 1.

[0021] The protective layer 41 is evenly applied to the outer wall of the bottom of the screw 1. Then, the fixing nut 42 and the self-locking nut 43 are sequentially threaded onto the bottom of the screw 1. Under the action of the protective layer 41, the fixing nut 42 and the self-locking nut 43 are effectively prevented from falling off, loosening or deforming from the screw 1 during use. The track connecting component is fixed by the fixing nut 42, and the self-locking nut 43 locks the fixing nut 42 to prevent the fixing nut 42 from falling off.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-toughness, wear-resistant bolt for rail transit, comprising a bolt (1); Its features are: The top end of the screw (1) is fixed with a reinforcing structure (2); A protective structure (3) is provided on the outer side of the top of the screw (1). The protective structure (3) includes a gasket (31) provided on the outer side of the top of the screw (1). The gasket (31) has mounting holes (32) inside. Reinforcing ribs (33) are evenly fixed on the inner side of the gasket (31). The screw (1) has a fixing structure (4) on the outer side of its bottom.

2. A high-toughness wear-resistant rail transit bolt according to claim 1, characterized in that: The reinforcing structure (2) includes an upper fixing block (21), a reserved groove (22), a connecting block (23) and a connecting groove (24). The upper fixing block (21) is located at the top of the screw (1). A reserved groove (22) is provided at the middle position of the top of the upper fixing block (21). A connecting groove (24) is provided at the middle position of the bottom of the upper fixing block (21). A connecting block (23) is fixed at the corner position inside the connecting groove (24).

3. A high-toughness wear-resistant rail transit bolt according to claim 2, characterized in that: The top view cross-sections of the reserved groove (22) and the connecting groove (24) are both hexagonal, and the top view cross-sectional area of ​​the reserved groove (22) is smaller than that of the connecting groove (24).

4. The high-toughness, wear-resistant bolt for rail transportation according to claim 2, characterized in that: One side of the connecting block (23) is fixedly connected to the outer wall of the screw (1), and the inner wall of the bottom of the upper fixing block (21) is fixedly connected to the top of the screw (1).

5. The high-toughness, wear-resistant bolt for rail transportation according to claim 1, characterized in that: The gasket (31) is provided in two sets, and the two sets of gaskets (31) are symmetrically distributed vertically. The side view of the reinforcing rib (33) is arc-shaped. The reinforcing rib (33) is evenly distributed on the inner side wall of the gasket (31). The gasket (31) is sleeved on the outside of the screw (1) through the mounting hole (32).

6. The high-toughness, wear-resistant bolt for rail transportation according to claim 1, characterized in that: The fixing structure (4) includes a protective layer (41), a fixing nut (42) and a self-locking nut (43). The protective layer (41) is fixed to the outside of the bottom of the screw (1). The outer side of the protective layer (41) is threaded with the fixing nut (42). The outer side of the protective layer (41) at the bottom of the fixing nut (42) is threaded with the self-locking nut (43).

7. A high-toughness wear-resistant rail transit bolt according to claim 6, characterized in that: The protective layer (41) is a non-shedding adhesive, and the protective layer (41) is uniformly coated on the outer wall of the screw (1).

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