Stable subway rail fastener

Abstract

The utility model discloses a stable metro track fastener which comprises a base provided with at least one horizontal extending area. The limiting baffle is placed in the horizontal extension area of the base, and at least one end of the limiting baffle extends out of the base; the bolt penetrates through the base and the limiting baffle, a locking nut is screwed into the top of the bolt, a locking assembly is arranged between the locking nut and the limiting baffle, the locking assembly comprises an adjusting piece and second limiting teeth, and the second limiting teeth are integrally fixed to the bottom end face of the locking nut; through the designed fastening assembly, the position of the nut can be limited, the phenomenon that the nut displaces on the screw rod is avoided, therefore, it is guaranteed that fastening of a rail is not affected, the stability of the rail fastener is improved, and the fastening assembly is simple in structure, convenient to machine and produce, good in practicability and generalization performance and suitable for popularization and application. The defects of an existing rail fastener in use are overcome.

Description

Technical Field

[0001] The utility model belongs to the technical field of track fasteners, and particularly relates to a stable subway track fastener. Background Art

[0002] The subway rail transit system uses vehicles to run on fixed tracks, which has the advantages of fast operation speed, large carrying capacity, small environmental impact, low energy consumption, safety, and expansion of urban space. The track of rail transit is the basis for vehicle operation, and the track needs to be fixed safely and reliably to ensure the normal operation of the vehicle. Therefore, the track in rail transit needs to be fixed using track fasteners.

[0003] In the installation and fixation of the existing track fasteners on the track, it mainly relies on the nut screwed on the bolt to press down the baffle to achieve fastening. Therefore, the specifications and dimensions between the nut and the bolt must be exactly corresponding. However, as one of the important means of transportation in the city, the subway track has a very high usage frequency. When the subway runs on the track, it will inevitably vibrate. During long-term vibration, there will be a slight change in the connection position between the bolt and the nut, which will further cause the loosening between the track fastener and the subway track, and affect the subsequent driving safety. Therefore, there are great limitations in actual use and there is room for improvement. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a stable subway track fastener to solve the problem that the existing track fasteners are prone to loosen due to vibration in use as mentioned in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A stable subway track fastener, comprising

[0006] A base, having at least one horizontally extending area;

[0007] A limit baffle, placed in the horizontally extending area of the base, and at least one end of the limit baffle extends out of the base; and

[0008] A bolt, which penetrates through the base and the limit baffle. A locking nut is screwed onto the top of the bolt. A locking component is arranged between the locking nut and the limit baffle. The locking component includes an adjusting part and a second limiting tooth. The second limiting tooth is integrally fixed on the bottom end face of the locking nut. The second limiting tooth is in contact with the adjusting part in a slanting surface manner in the clockwise or counterclockwise direction. When the locking nut needs to be rotated in the clockwise direction towards the limit baffle, at this time, the second limiting tooth is in contact with the adjusting part through its own slanting surface and can rotate. When the locking nut becomes loose, the second limiting tooth will be stuck with the vertical surface of the adjusting part to achieve limitation, thereby avoiding the phenomenon of the locking nut becoming loose. Vice versa.

[0009] Preferably, a ring groove is formed on the top surface of the limit baffle, and through holes are formed in the ring groove at equal angles, and the adjusting member is placed in the ring groove.

[0010] Preferably, the adjusting member includes a locking washer, and a first set of limiting teeth integrally formed are fixed on the top surface of the locking washer at equal angles; the adjusting member further includes a spring disposed in the through hole, and the spring abuts against the bottom end surface of the locking washer, and the locking washer is lifted by the spring, so that the first set of limiting teeth and the second set of limiting teeth are attached or locked.

[0011] Preferably, both the first set of limiting teeth and the second set of limiting teeth have inclined surfaces and vertical surfaces, and the inclined surfaces of the two are arranged oppositely.

[0012] Preferably, a bottom groove is formed at the bottom of one end of the limit baffle extending out of the base, and a rotatable fitting block is connected in the bottom groove, and the fitting block is used to fit with the curved surface area of the subway track.

[0013] Preferably, insertion holes are formed in one end of the limit baffle and the fitting block, and a shaft in the shape of a column penetrates through the insertion holes, and the fitting block rotates around the axis of the shaft.

[0014] Preferably, the bottom end of the bolt is screwed into the foundation of the laid track.

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

[0016] Through the designed fastening assembly, the position of the nut can be limited, and the phenomenon that the nut is displaced on the screw can be avoided, so as to ensure that the fastening of the track is not affected, improve the stability of the track fastener, and the fastening assembly has a simple structure, is convenient for processing and production, has good practicability and popularization, and perfects the deficiencies existing in the use of the existing track fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a bottom view of the present utility model;

[0019] Figure 3 is the present utility model Figure 2 is an enlarged schematic view of area A in

[0020] Figure 4 is a top view of the connection between the base and the limit baffle of the present utility model;

[0021] Figure 5 is a bottom view of the connection between the base and the limit baffle of the present utility model.

[0022] In the figure:

[0023] 100, base;

[0024] 200, limit baffle; 200a, jack; 200b, through hole; 200c, annular groove; 200d, bottom groove; 201, fitting block; 202, spring;

[0025] 300, bolt; 301, lock washer; 302, lock nut; 303, first limit tooth; 304, second limit tooth. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] Please refer to Figures 1 to 5 , the present invention provides a technical solution: a stable subway track fastener, including

[0028] a base 100, having at least one horizontally extending area;

[0029] a limit baffle 200, placed in the horizontally extending area of the base 100, and at least one end of the limit baffle 200 extends out of the base 100; and

[0030] a bolt 300, which penetrates through the base 100 and the limit baffle 200, a lock nut 302 is screwed onto the top of the bolt 300, and a locking assembly is arranged between the lock nut 302 and the limit baffle 200. The locking assembly includes an adjusting member and a second limit tooth 304. The second limit tooth 304 is integrally fixed on the bottom end surface of the lock nut 302. The second limit tooth 304 and the adjusting member are in contact with each other in a sloping surface manner in the clockwise or counterclockwise direction, and the second limit tooth 304 and the adjusting member are in a vertical surface stop in the counterclockwise or clockwise direction. When the lock nut 302 needs to rotate in the clockwise direction towards the limit baffle 200, at this time, the second limit tooth 304 is in contact with the adjusting member in its own sloping surface and can rotate. When the lock nut 302 becomes loose, the second limit tooth 304 will stop with the vertical surface of the adjusting member to achieve limiting, thereby avoiding the phenomenon of the lock nut 302 becoming loose. Vice versa.

[0031] In this embodiment, preferably, a ring groove 200c is formed on the top end surface of the limit baffle 200, through holes 200b are formed at equal angles in the ring groove 200c, and the adjusting member is placed in the ring groove 200c.

[0032] In this embodiment, preferably, the adjusting member includes a locking washer 301, and a first set of limit teeth 303 are integrally fixed on the top end surface of the locking washer 301 at equal angles; the adjusting member further includes a spring 202 disposed in the through hole 200b, and the spring 202 abuts against the bottom end surface of the locking washer 301, and the locking washer 301 is lifted by the spring 202, so that the first set of limit teeth 303 are fitted or locked with the second set of limit teeth 304.

[0033] In this embodiment, preferably, both the first set of limit teeth 303 and the second set of limit teeth 304 have inclined surfaces and vertical surfaces, and the inclined surfaces of the two are arranged oppositely, and specific reference can be made to Figure 1 、 Figure 2 、 Figure 3 as shown in.

[0034] In this embodiment, preferably, a bottom groove 200d is formed at the bottom of one end of the limit baffle 200 extending outside the base 100, and a rotatable fitting block 201 is connected in the bottom groove 200d, and the fitting with the curved surface area position of the subway track is realized through the fitting block 201.

[0035] In this embodiment, preferably, insertion holes 200a are formed in one end of the limit baffle 200 and on the fitting block 201, and a columnar shaft penetrates through the inside of the insertion hole 200a, and the fitting block 201 rotates around the axis of the shaft.

[0036] In this embodiment, preferably, the bottom end of the bolt 300 is screwed into the foundation of the laid track.

[0037] Although the embodiments of the present invention have been shown and described (see the above detailed description), for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stable subway track fastener, characterized in that: including a base (100) having at least one horizontally extending area; a limit baffle (200) placed within the horizontally extending area of the base (100), and at least one end of the limit baffle (200) extends outside the base (100); and a bolt (300) passing through the base (100) and the limit baffle (200), a locking nut (302) is screwed onto the top of the bolt (300), and a locking assembly is provided between the locking nut (302) and the limit baffle (200). The locking assembly includes an adjusting member and a second limiting tooth (304). The second limiting tooth (304) is integrally fixed on the bottom end face of the locking nut (302), and the second limiting tooth (304) and the adjusting member are in contact with each other in a sloping surface manner in the clockwise or counterclockwise direction.

2. The stable subway track fastener according to claim 1, characterized in that: A ring groove (200c) is provided on the top end face of the limit baffle (200), and through holes (200b) are equiangularly provided in the ring groove (200c), and the adjusting member is placed in the ring groove (200c).

3. The stable subway track fastener according to claim 2, characterized in that: The adjusting member includes a lock washer (301), and first limiting teeth (303) are integrally fixed on the top end face of the lock washer (301) at equal angles; the adjusting member further includes a spring (202) arranged in the through hole (200b), and the spring (202) abuts against the bottom end face of the lock washer (301), and the first limiting tooth (303) and the second limiting tooth (304) are in contact or engaged with each other.

4. The stable subway track fastener according to claim 3, characterized in that: Both the first limiting tooth (303) and the second limiting tooth (304) have a sloping surface and a vertical surface, and the sloping surfaces of the two are arranged oppositely.

5. The stable subway track fastener according to claim 4, wherein: A bottom groove (200d) is provided at the bottom of the end of the limit baffle (200) extending outside the base (100), and a rotatable fitting block (201) is connected in the bottom groove (200d).

6. The stable subway track fastener according to claim 5, characterized in that: Holes (200a) are provided in one end of the limit baffle (200) and the fitting block (201), and a shaft in the shape of a column penetrates through the inside of the holes (200a), and the fitting block (201) rotates around the axis of the shaft.

7. A stable subway track fastener according to claim 1, characterized in that: The bottom end of the bolt (300) is screwed into the foundation on which the track is laid.

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