CN213173155U

CN213173155U - Vibration reduction screw for railway track fastener

Info

Publication number: CN213173155U
Application number: CN202021550835.1U
Authority: CN
Inventors: 赵俊杰; 李忠; 关博
Original assignee: Shanghai University of Engineering Science
Current assignee: Shanghai University of Engineering Science
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-05-11
Anticipated expiration: 2030-07-30

Abstract

The utility model relates to a damping screw for railway track fastener, including screw rod body and nut, wherein, nut fixed mounting is at the top of screw rod body, and the cover is equipped with the ring piece that can reciprocate on the screw rod body, and the ring piece passes through telescopic buffering portion to be connected with the nut. Compared with the prior art, the utility model discloses utilize the buffering part to connect nut and ring piece respectively, through the number of the tightening turns of control screw, can adjust the pressure resultant force of ring piece, guarantee the fastening effect to the railway track fastener, can consume the vibration energy between vehicle and the track through buffering portion to realize simple, reliable damping's purpose.

Description

Vibration reduction screw for railway track fastener

Technical Field

The utility model belongs to the technical field of the railway rails damping technique and specifically relates to a damping screw for railway rails fastener is related to.

Background

With the high-speed development of railway engineering, for a rail train, vibration can be generated between a vehicle and a rail in the running process of the train, and the vibration can damage a railway rail fastener. At present, in order to reduce vibration generated between a vehicle and a rail, a hydraulic system is generally adopted to relieve the vibration, but for the existing railway rail, the large-area arrangement of the hydraulic system can not only increase the construction cost, but also generate high maintenance cost, and in addition, the problem of complex construction operation exists when a large amount of hydraulic systems are installed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a damping screw for railway track fastener in order to overcome the defect that above-mentioned prior art exists to alleviate the vibration between vehicle and the track simply, reliably, avoid railway track fastener to receive the vibration damage.

The purpose of the utility model can be realized through the following technical scheme: the utility model provides a damping screw for railway track fastener, includes screw rod body and nut, nut fixed mounting is at the top of screw rod body, the cover is equipped with the ring piece that can reciprocate on the screw rod body, the ring piece passes through telescopic buffering portion and is connected with the nut.

Further, the buffer is a spring.

Further, the inner diameter of the spring is larger than or equal to the diameter of the screw body.

Furthermore, one end of the spring is fixedly connected to the bottom of the nut, and the other end of the spring is fixedly connected to the top of the ring piece.

Further, the buffer part is specifically a rubber cylinder.

Furthermore, a through hole for penetrating through the screw body is formed in the middle of the rubber cylinder.

Furthermore, the top of the rubber cylinder is connected with a screw cap in a vulcanization mode, and the bottom of the rubber cylinder is connected with a ring piece in a vulcanization mode.

Further, the thickness of the ring piece is larger than or equal to that of the screw cap.

Further, the outer surface of the screw body is provided with external threads.

Further, the ring sheet is a metal ring sheet.

The utility model discloses a use method and theory of operation do: at first lift the original screw of railway track fastener off, later with in the mounting hole of screw rod body screw-in railway track fastener, and compress tightly the ring piece to the pressfitting department of original screw cap, constantly measure the atress condition of pressfitting department with the dynamometer in rotatory screw cap, the number of turns is screwed up through control, adjust the pressure that buffer portion produced to the ring piece, reach the same fixed effect with original screw, when the train passes through the rail, the track can produce the reaction force that is bigger than original screwing up pressfitting power to the ring piece, must can vibrate, most vibration energy will be consumed to buffer portion this moment, with this purpose that reaches the damping.

Compared with the prior art, the utility model has the advantages that the ring piece which can move up and down is sleeved on the screw body, the telescopic buffer part is utilized to connect the ring piece with the nut, and the pressure of the ring piece can be adjusted by adjusting the number of tightening turns, thereby ensuring the fixing effect of the utility model on the railway track fastener; through telescopic buffering portion, can consume the vibration energy effectively, avoid the vibration to produce the damage to the railway rails fastener, the utility model has the advantages of simple structure, simple to operate are favorable to actual construction to be used, and can alleviate the vibration between vehicle and the track reliably.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Wherein: 1. nut, 2, buffer portion, 3, ring piece, 4, external screw thread, 5, screw rod body.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

The first embodiment is as follows:

as shown in fig. 1, a damping screw for railway track fastener, including screw body 5 and nut 1, nut 1 fixed mounting is at the top of screw body 5, the cover is equipped with the ring piece 3 that can reciprocate on the screw body 5, ring piece 3 is connected with nut 1 through telescopic buffer 2, the thickness of ring piece 3 is more than or equal to the thickness of nut 1, in order to guarantee the compressive property of ring piece 3, the surface of screw body 5 is equipped with external screw thread 4, external screw thread 4 matches with the mounting hole of railway track fastener, through rotatory nut 1, make screw body 5 can screw up and insert in the mounting hole.

At the practical application in-process, at first lift the original screw of railway rails fastener off, change the utility model provides a damping screw: insert into original screwed hole with screw rod body 5, compress tightly ring plate 3 to the pressfitting department of original screw cap, constantly measure the atress condition of pressfitting department with the dynamometer when screwing up nut 1, the number of turns of screwing up through control damping screw, adjust the pressure of buffer portion 2 to the production of ring plate 3, with reaching the same fixed effect with original screw, pass through the rail as the train, the track can produce the reaction force that is greater than original tightening pressure resultant force to ring plate 3, must will produce vibration, most vibration energy will be consumed by buffer portion 2 this moment, with this vibration damping is reached, the purpose of protection railway fastener.

In this embodiment, the ring piece 3 is the metal ring piece, and buffer part 2 specifically is the spring, and the internal diameter of spring is more than or equal to the diameter of screw body 5 to guarantee that the spring can stretch out and draw back smoothly along the vertical direction of screw body 5, the one end fixed connection of spring to the bottom of nut 1, the other end fixed connection of spring to the top of ring piece 3.

Example two:

in this embodiment, buffering portion 2 specifically is the rubber cylinder, and the through-hole that is used for passing screw body 5 is offered to the intermediate position of rubber cylinder to guarantee that the rubber cylinder can stretch out and draw back smoothly along the vertical direction of screw body 5, the top and the nut 1 vulcanization of rubber cylinder are connected, and the bottom and the ring piece 3 vulcanization of rubber cylinder are connected. The remainder of this embodiment corresponds to the embodiment.

Claims

1. The utility model provides a damping screw for railway track fastener, its characterized in that includes screw rod body (5) and nut (1), nut (1) fixed mounting is at the top of screw rod body (5), the cover is equipped with ring piece (3) that can reciprocate on screw rod body (5), ring piece (3) are connected with nut (1) through telescopic buffer (2).

2. A shock absorbing screw for railway track fasteners according to claim 1, characterised in that said buffer (2) is embodied as a spring.

3. A shock absorbing screw for railway track fasteners according to claim 2, characterised in that the inner diameter of the spring is greater than or equal to the diameter of the shank body (5).

4. A damper screw for railway track fasteners according to claim 2, wherein one end of the spring is fixedly connected to the bottom of the nut (1) and the other end of the spring is fixedly connected to the top of the collar plate (3).

5. A shock absorbing screw for railway track fasteners according to claim 1, characterised in that said buffer (2) is embodied as a rubber cylinder.

6. The vibration damping screw for railway track fastener according to claim 5, wherein the rubber cylinder is provided with a through hole at the middle position for passing through the screw body (5).

7. A damper screw for railway track fasteners according to claim 5, characterised in that the top of the rubber cylinder is vulcanised to the nut (1) and the bottom of the rubber cylinder is vulcanised to the collar (3).

8. A damper screw for railway track fasteners according to claim 1, characterised in that the thickness of the loop (3) is greater than or equal to the thickness of the nut (1).

9. A shock absorbing screw for railway track fasteners according to claim 1, characterised in that the outer surface of the shank body (5) is provided with an external thread (4).

10. A vibration-damping screw for railway track fasteners according to claim 1, characterised in that the loop (3) is a metal loop.