Track pre-embedded threaded rod

Abstract

The utility model relates to a track pre-embedded threaded rod, which aims at solving the technical problems that the existing threaded rod is always fixed and integrated, the whole threaded rod needs to be replaced when the buried part is damaged, and the replacement cost is increased, and comprises a sleeper, and a base plate is arranged on the surface of the sleeper. The sleeper is connected with the base plate through a threaded rod body, and an auxiliary mechanism is arranged on the inner side of the top of the threaded rod body. The threaded rod body comprises a hexagonal head, and the bottom of the hexagonal head is fixedly connected with a first screw rod. According to the threaded rod, the limiting rod and the hexagonal head can be rapidly separated through an auxiliary mechanism, so that the first screw rod and the second screw rod are effectively separated, only the second screw rod can be detached and replaced, and the replacement cost is reduced; and the limiting rod is clamped in the hexagonal head and the first screw in a matched mode, so that the limiting rod can be rapidly and accurately inserted into the hexagonal head and the first screw, and the assembling efficiency after replacement is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tooth bars, in particular to a track pre-embedded tooth bar. Background Art

[0002] With the increase in railway transportation volume, as well as the increase in axle weight and running speed of locomotives and vehicles, many new types of tracks have emerged one after another. Ballastless tracks use concrete or asphalt roadbeds with better stability instead of ballasted roadbeds to transfer dynamic and static loads during driving, and the elastic deformation required during driving is mainly provided by the precisely defined unit materials set under the rails or fasteners. The structural design of ballastless tracks requires them to have sufficient anti-freezing safety, especially for the subsequent settlement deformation of their lower structures after track laying. Ballastless tracks can be divided into point type and continuous type according to the rail support method, can be divided into sleeper and sleeper-free type according to the support fastener method, and can be divided into buried type and embedded type according to the sleeper support method. When buried and embedded sleepers are pre-buried, tooth bars are usually used to fix the sleepers.

[0003] Since the bottom of the pre-embedded tooth bar of the high-speed rail track is buried underground for use, it is squeezed and corroded by moist soil for a long time underground, which will reduce the strength of the tooth bar and require intermittent inspection and replacement.

[0004] Existing tooth bars are often fixed in one piece. When the part buried underground is damaged, the entire tooth bar needs to be replaced, which increases the replacement cost. In view of this, we propose track embedded tooth bars. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide a track embedded tooth bar to solve the technical problem that the current existing tooth bars are often fixed in one piece, and when the part buried underground is damaged, the entire tooth bar needs to be replaced, which increases the replacement cost.

[0006] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is: designing a track embedded tooth bar, including a sleeper, a pad is provided on the surface of the sleeper, the sleeper and the pad are connected through a tooth bar body, and an auxiliary mechanism is provided on the inner side of the top of the tooth bar body;

[0007] The tooth bar body comprises a hexagonal head, a screw rod 1 is fixedly connected to the bottom of the hexagonal head, a limiting rod is engaged between the hexagonal head and the inside of the screw rod 1, and a screw rod 2 is fixedly connected to the bottom of the limiting rod.

[0008] Preferably, the limiting rod passes through the hexagonal head and the screw rod 1, and the overall height of the hexagonal head and the screw rod 1 is the same as the height of the limiting rod.

[0009] Preferably, the limiting rod is in the shape of a hexagonal column, and the limiting rod is matched and engaged with the hexagonal head and the inside of the screw rod.

[0010] Preferably, the auxiliary mechanism includes a limit groove, the limit groove is arranged inside the limit rod, a spring is arranged inside the limit groove, a clamping block is connected to the outer end of the spring, an interlayer is arranged on the side of the hexagonal head, and a movable pressing block is clamped inside the interlayer.

[0011] Preferably, the limiting groove and the limiting rod are integrally formed, and the clamping block forms an elastic structure with the limiting rod via a spring.

[0012] Preferably, the movable pressing block is movably engaged in the interior of the interlayer, and the diameter of one end of the movable pressing block that is engaged with the card block is the same as the diameter of the card block.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model can quickly separate the limit rod from the hexagonal head through the auxiliary mechanism, thereby effectively separating the screw rod 1 from the screw rod 2, and only the screw rod 2 can be disassembled and replaced, thereby reducing the replacement cost. Since the limit rod is in the shape of a hexagonal prism and the limit rod is matched and engaged with the inside of the hexagonal head and the screw rod 1, the limit rod can be quickly and accurately inserted into the inside of the hexagonal head and the screw rod 1, thereby improving the assembly efficiency after replacement.

[0015] 2. When disassembling the limit rod in the utility model, press the movable block inward to make it push against the block and move it out of the hexagonal head. At this time, the block completely enters the limit groove, and the limit rod is no longer restricted. The screw rod 2 can be pulled downward to directly pull out the limit rod. When assembling the new screw rod 2, first push the block into the limit rod, and then insert the limit rod into the screw rod 1 until the top of the limit rod is flush with the top of the hexagonal head. At this time, the block is also flush with the movable block, and the block is ejected by the spring rebound force, effectively engaging with the inside of the hexagonal head to complete the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the tooth bar body of the utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the tooth bar body of the utility model;

[0019] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a tooth bar body of the utility model;

[0020] In the figure: 1. sleeper; 2. pad; 3. tooth bar body; 4. auxiliary mechanism;

[0021] 301, hexagonal head; 302, screw rod 1; 303, limit rod; 304, screw rod 2;

[0022] 401, limit groove; 402, spring; 403, clamping block; 404, interlayer; 405, movable pressing block. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0024] Rail embedded teeth, see Figures 1 to 4 , comprising a sleeper 1, a pad 2 is provided on the surface of the sleeper 1, the sleeper 1 and the pad 2 are connected by a tooth bar body 3, and an auxiliary mechanism 4 is provided on the inner side of the top of the tooth bar body 3;

[0025] The tooth bar body 3 includes a hexagonal head 301, a screw 302 is fixedly connected to the bottom of the hexagonal head 301, a limiting rod 303 is engaged inside the hexagonal head 301 and the screw 1 302, further, the limiting rod 303 runs through the inside of the hexagonal head 301 and the screw 1 302, the overall height of the hexagonal head 301 and the screw 1 302 is the same as the height of the limiting rod 303, further, the limiting rod 303 is a hexagonal prism, the limiting rod 303 is matched and engaged with the inside of the hexagonal head 301 and the screw 1 302, and a screw 2 304 is fixedly connected to the bottom of the limiting rod 303. The utility model can quickly separate the limit rod 303 and the hexagonal head 301 through the auxiliary mechanism 4, thereby effectively separating the screw rod 1 302 and the screw rod 2 304, and only the screw rod 2 304 can be disassembled and replaced, thereby reducing the replacement cost. Since the limit rod 303 is in the shape of a hexagonal prism and the limit rod 303 is matched and engaged with the hexagonal head 301 and the screw rod 1 302, the limit rod 303 can be quickly and accurately inserted into the hexagonal head 301 and the screw rod 1 302, thereby improving the assembly efficiency after replacement.

[0026] It is worth noting that the auxiliary mechanism 4 includes a limit groove 401, which is arranged inside the limit rod 303, and a spring 402 is arranged inside the limit groove 401, wherein the limit groove 401 and the limit rod 303 are integrally formed, and the clamping block 403 forms an elastic structure with the limit rod 303 through the spring 402, and the clamping block 403 is connected to the outer end of the spring 402, and an interlayer 404 is provided on the side of the hexagonal head 301, and a movable pressing block 405 is engaged inside the interlayer 404. It is worth noting that the movable pressing block 405 is movably engaged inside the interlayer 404, and the diameter of the end of the movable pressing block 405 that is attached to the clamping block 403 is the same as the diameter of the clamping block 403. When the limit rod 303 is disassembled in the utility model, the movable pressing block 405 is pressed inwardly so that it pushes against the block 403 and moves out of the hexagonal head 301. At this time, the block 403 completely enters the limit groove 401, and the limit rod 303 is no longer restricted. The screw rod 304 can be pulled downward to directly pull out the limit rod 303. When the new screw rod 304 is assembled, the block 403 is first pushed into the limit rod 303, and then the limit rod 303 is inserted into the screw rod 1 302 until the top of the limit rod 303 is flush with the top of the hexagonal head 301. At this time, the block 403 is also flush with the movable pressing block 405, and the block 403 is ejected by the rebound force of the spring 402, and is effectively engaged in the hexagonal head 301 to complete the assembly.

[0027] Working principle: when the tooth bar body 3 needs to be replaced, the tooth bar body 3 is screwed with a tool to separate it from the sleeper 1, and then the movable pressing block 405 is pressed inwardly to make it push against the block 403 and move it out of the hexagonal head 301. At this time, the block 403 completely enters the limiting groove 401, and the limiting rod 303 is no longer restricted. The screw rod 2 304 can be pulled down to directly pull out the limiting rod 303. When assembling the new screw rod 2 304, first push the block 403 into the limiting rod 303, and then insert the limiting rod 303 into the screw rod 1 302 until the top of the limiting rod 303 is flush with the top of the hexagonal head 301. At this time, the block 403 is also flush with the movable pressing block 405, and the block 403 pops out under the influence of the rebound force of the spring 402, and is engaged with the inside of the hexagonal head 301 to complete the assembly, and then the tooth bar body 3 is screwed with a tool to fix it to the sleeper 1.

[0028] The embodiments of the present invention disclose preferred embodiments, but are not limited thereto. A person skilled in the art can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present invention, they are all within the protection scope of the present invention.

Claims

1. A track pre-embedded threaded rod, comprising a sleeper (1), characterized in that: The surface of the sleeper (1) is provided with a pad (2), the sleeper (1) and the pad (2) are connected via a tooth bar body (3), and an auxiliary mechanism (4) is provided on the inner side of the top of the tooth bar body (3); The tooth bar body (3) comprises a hexagonal head (301), a screw rod 1 (302) is fixedly connected to the bottom of the hexagonal head (301), a limiting rod (303) is internally engaged between the hexagonal head (301) and the screw rod 1 (302), and a screw rod 2 (304) is fixedly connected to the bottom of the limiting rod (303).

2. The track embedded thread rod according to claim 1, characterized in that: The limiting rod (303) passes through the inside of the hexagonal head (301) and the screw rod (302), and the overall height of the hexagonal head (301) and the screw rod (302) is the same as the height of the limiting rod (303).

3. The track embedded thread rod according to claim 1, characterized in that: The limiting rod (303) is in the shape of a hexagonal column, and the limiting rod (303) is matched and engaged with the hexagonal head (301) and the inside of the screw rod (302).

4. The track embedded thread rod according to claim 1, characterized in that: The auxiliary mechanism (4) comprises a limiting groove (401), the limiting groove (401) is arranged inside the limiting rod (303), a spring (402) is arranged inside the limiting groove (401), an outer end of the spring (402) is connected to a clamping block (403), an interlayer (404) is arranged on the side of the hexagonal head (301), and a movable pressing block (405) is clamped inside the interlayer (404).

5. The track embedded thread rod according to claim 4, characterized in that: The limiting groove (401) and the limiting rod (303) are integrally formed, and the clamping block (403) forms an elastic structure with the limiting rod (303) via the spring (402).

6. The track embedded thread rod according to claim 4, characterized in that: The movable pressing block (405) is movably engaged inside the interlayer (404), and the diameter of one end of the movable pressing block (405) that is attached to the clamping block (403) is the same as the diameter of the clamping block (403).

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