CN113914152B

CN113914152B - Track shock absorber

Info

Publication number: CN113914152B
Application number: CN202111267161.3A
Authority: CN
Inventors: 熊学强; 孙照亮; 穆忠鑫; 严卫民; 王丹; 欧阳斌; 黎任泠
Original assignee: Zhuzhou Times New Material Technology Co Ltd
Current assignee: Zhuzhou Times New Material Technology Co Ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-12-27
Anticipated expiration: 2041-10-28
Also published as: CN113914152A

Abstract

The invention relates to the field of rail transit, in particular to a rail vibration absorber which comprises a fixing plate and a fixing block, wherein the side part and the bottom of the fixing block are respectively coated with an elastic cushion, a hole is formed in the fixing plate, the elastic cushion is positioned in the hole of the fixing plate, supporting seats are respectively arranged on two sides of the upper part of the fixing block, convex fixing holes are respectively formed in two sides of the upper part of the fixing block, a limiting block is arranged in each fixing hole, a screw rod is arranged on the upper part of each limiting block, the upper part of each screw rod penetrates through the corresponding supporting seat and is matched with a mounting nut, a pressing plate is arranged on the upper part of each supporting seat, an elastic strip is arranged between each pressing plate and the corresponding nut and is respectively contacted with the corresponding pressing plate and the corresponding nut, and mounting holes are respectively formed in two sides of the fixing plate. The elastic strip is stored on the pressing plate in an elastic manner, so that the pressing plate with certain strength has certain elastic tension, when a train runs, the anti-overturning safety function of the steel rail can be realized, the steel rail is in elastic soft contact with the pressing plate, and the loss of rigid hard contact to each part under long-term use is reduced.

Description

Track shock absorber

Technical Field

The invention relates to the field of rail transit, in particular to a rail vibration absorber.

Background

In recent years, with the rapid development of social economy and the promotion of the integration process of domestic urban communities, the rail transit transportation system in China is developed vigorously, the vibration-damping fastener plays an important role in vibration damping, noise reduction and traffic safety maintenance for the rail transit system, and when large displacement expansion exists on a bridge with large temperature span and between bridges, the fastener is required to provide small resistance or even ultra-small resistance in order to reduce the interaction force between the bridge structure and a long steel rail.

The main problems existing in the prior art are that: the vertical direction and the turnover of a steel rail are respectively limited by a buckling surface and a butting surface by adopting a rigid component in the prior art, ultra-small resistance can be realized only by clearance fit, and the steel rail is in rigid hard contact with a steel rail connecting structure; along with the long-term operation of train, there is the clearance between each part, is unfavorable for gauge to keep, and spare part easily loses.

Disclosure of Invention

In order to solve the problems that parts of the existing ultra-small resistance implementation scheme are easy to lose, the invention provides a track damper, and parts of the track damper are not easy to lose.

The invention relates to a track shock absorber, which comprises a fixing plate and a fixing block, wherein the side part and the bottom of the fixing block are respectively coated with an elastic cushion, the fixing plate is provided with a hole, the elastic cushion is positioned in the hole of the fixing plate, two sides of the upper part of the fixing block are respectively provided with a supporting seat, two sides of the upper part of the fixing block are respectively provided with a convex fixing hole, a limiting block is arranged in the fixing hole, the upper part of the limiting block is provided with a screw rod, the upper part of the screw rod penetrates through the supporting seat and is matched with a mounting nut, the upper part of the supporting seat is provided with a pressing plate, an elastic strip is arranged between the pressing plate and the nut and is respectively contacted with the pressing plate and the nut, and two sides of the fixing plate are respectively provided with a mounting hole.

Furthermore, the upper part of the supporting seat is arc-shaped, the lower part of the pressing plate is arc-shaped, and the supporting seat is matched with the pressing plate.

The two sides of the upper part of the fixed block are respectively provided with a cushion block, one end of the pressing plate is positioned on the upper part of the track, and the other end of the pressing plate is positioned above the cushion blocks.

The side part of the pressure plate is provided with a baffle.

The upper part of the pressing plate is provided with a groove, and the elastic strip is positioned in the groove.

And two sides of the upper part of the fixed block are respectively provided with a stop block.

The periphery of the upper part of the fixed block is coated with an elastic pad.

The elastic cushion is made of rubber and is vulcanized and fixed with the fixing plate and the fixing block respectively.

And a gasket strip is arranged on the lower part of one side of the pressing plate and is positioned on the upper part of the track.

The lower part of the filler strip is an arc surface or an inclined surface.

The invention has the beneficial effects that the pressing plate is buckled and pressed on the steel rail through the elastic strip, the steel rail is buckled and pressed through the elasticity of the elastic strip, and the elasticity of the elastic strip is limited on the pressing plate, so that the buckling pressure transmitted to the steel rail is obviously reduced, namely the positive pressure when the steel rail moves longitudinally is obviously reduced, and the purpose of ultra-small resistance is achieved, namely the longitudinal resistance of the single-node vibration-damping fastener is controlled below 3kN and even approaches zero; the elastic strip is stored on the pressing plate in an elastic manner, so that the pressing plate with certain strength has certain elastic tension, when a train runs, the anti-overturning safety function of the steel rail can be realized, the steel rail is in elastic soft contact with the pressing plate, and the loss of rigid hard contact to each part under long-term use is reduced. When the vertical load is applied, the fixed block moves downwards, and the elastic cushion generates vertical deformation, so that the vibration damping and noise reduction effects can be achieved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a bottom view of FIG. 1;

FIG. 3 is an enlarged view of section I of FIG. 2;

FIG. 4 is a schematic structural view of a fixing plate, a fixing block and an elastic pad according to the present invention;

FIG. 5 is a rear view of FIG. 4;

fig. 6 is another structural schematic diagram of the fixing plate, the fixing block and the elastic pad of the present invention.

In the figure, the fixing plate 1, the fixing block 2, the fixing block 3, the elastic pad 4, the supporting seat 5, the fixing hole 6, the screw 7, the limiting block 8, the nut 9, the pressing plate 10, the elastic strip 11, the mounting hole 12, the cushion block 13, the baffle plate 14, the stop block 15 and the cushion strip are arranged.

Detailed Description

As shown in the accompanying drawings 1-6, a track shock absorber comprises a fixing plate 1 and a fixing block 2, the lateral part and the bottom of the fixing block 2 are respectively coated with an elastic pad 3, holes are formed in the fixing plate 1, the elastic pad 3 is located in the holes of the fixing plate 1, supporting seats 4 are respectively arranged on two sides of the upper part of the fixing block 2, convex fixing holes 5 are respectively formed in two sides of the upper part of the fixing block 2, limiting blocks 7 are arranged in the fixing holes 5, screw rods 6 are arranged on the upper parts of the limiting blocks 7, the upper parts of the screw rods 6 penetrate through the supporting seats 4 and are matched with mounting nuts 8, pressing plates 9 are arranged on the upper parts of the supporting seats 4, elastic strips 10 are arranged between the pressing plates 9 and the nuts 8, the elastic strips 10 are respectively contacted with the pressing plates 9 and the nuts 8, and mounting holes 11 are respectively formed in two sides of the fixing plate 1. The fixing plate 1 is fixed to a sleeper or a track bed through the mounting hole 11. The supporting seat 4, the screw rod 6 and the nut 8 can also play a role in adjusting the track gauge.

The structure buckles the pressing plate 9 on the steel rail through the elastic strip 10 to elastically buckle the steel rail, and limits (or stores) the elasticity of the elastic strip 10 on the pressing plate 9, so that the buckling pressure transmitted to the steel rail is obviously reduced, namely, the positive pressure when the steel rail moves longitudinally is obviously reduced, thereby achieving the purpose of ultra-small resistance, namely, the longitudinal resistance of the single-node damping fastener is controlled below 3kN and even approaches zero; the elastic strip 10 is stored on the pressing plate 9 through elasticity, the pressing plate 9 with certain strength has certain elastic tension, when a train runs, the steel rail can play a role in anti-overturning safety, the steel rail and the pressing plate 9 are in elastic soft contact, and loss of rigid hard contact to each part under long-term use is reduced. Above-mentioned structure is when receiving vertical load, and 2 downshifts of fixed block, and cushion 3 produces vertical deformation, can also reach the effect of making an uproar that falls in the damping.

The upper part of the supporting seat 4 is arc-shaped, the lower part of the pressing plate 9 is arc-shaped, and the supporting seat 4 is matched with the pressing plate 9. When the longitudinal torsional moment exists in the steel rail (namely the steel rail is transversely loaded), the pressing plate 9 elastically rotates along the longitudinal direction of the upper part of the supporting seat 4 within a small range under the action of the elastic force of the elastic strip 10, and the comfort of a train can be kept.

Cushion blocks 12 are respectively arranged on two sides of the upper portion of the fixing block 2, one end of the pressing plate 9 is located on the upper portion of the track, and the other end of the pressing plate 9 is located above the cushion blocks 12. When one end of the pressure plate 9 is acted by the rail, the cushion block 12 plays a role of supporting the other end of the pressure plate 9 when the pressure plate 9 elastically rotates along the longitudinal direction in a small range on the upper part of the supporting seat 4.

A baffle 13 is arranged at the side part of the pressure plate 9. The stopper 13 can restrict the movement of the elastic strip 10.

The upper part of the pressing plate 9 is provided with a groove, and the elastic strip 10 is positioned in the groove. The groove can restrict the movement of the elastic strip 10.

And two sides of the upper part of the fixed block 2 are respectively provided with a stop block 14. The stop 14 acts to limit the track.

The elastic pad 3 is wrapped on the periphery of the upper part of the fixed block 2, and the fixed block 2 and the elastic pad 3 can be firmly fixed by the structure, so that the fixed block 2 and the elastic pad 3 are prevented from being separated from each other.

The elastic cushion 3 is made of rubber, and the elastic cushion 3 is vulcanized and fixed with the fixing plate 1 and the fixing block 2 respectively. The structure enables the three to be firmly fixed.

The lower part of one side of the pressing plate 9 is provided with a backing strip 15, and the backing strip 15 is positioned at the upper part of the track. The backing strip 15 is in contact with the rail to reduce the area of the platen 9 in direct contact with the rail and also to avoid wear of the platen 9.

The lower part of the filler strip 15 is an arc surface or an inclined surface.

The main parts of the invention are common fasteners, the fastener parts have universal interchangeability, are convenient for maintenance and installation, and can realize ultra-small resistance only by adding part of special mechanisms on the common fasteners without completely adopting special parts, and the invention has small overall appearance, small requirement on installation space and convenient transformation of the existing line; (ii) a The elastic cushion 3, the fixing plate 1 and the fixing block 2 are integrated by vulcanization, so that the number of parts is small, and the installation and maintenance are convenient; the invention reduces the component loss caused by rigid hard contact, not only improves the comfort of the train, but also reduces the maintenance frequency; the elastic strip does not need to use a small-resistance elastic strip, even if a normal-resistance elastic strip or a large-resistance elastic strip is used, ultra-small resistance can be realized, and the steel rail connecting piece do not need to be in clearance fit.

Claims

1. An orbital damper, characterized by: the fixing device comprises a fixing plate (1) and a fixing block (2), the side part and the bottom of the fixing block (2) are respectively coated with an elastic pad (3), a hole is formed in the fixing plate (1), the elastic pad (3) is located in the hole of the fixing plate (1), the elastic pad (3) is made of rubber, the elastic pad (3) is vulcanized and fixed with the fixing plate (1) and the fixing block (2) respectively, two sides of the upper part of the fixing block (2) are provided with supporting seats (4) respectively, two sides of the upper part of the fixing block (2) are provided with convex fixing holes (5) respectively, limiting blocks (7) are arranged in the fixing holes (5), the upper parts of the limiting blocks (7) are provided with screw rods (6), the upper parts of the screw rods (6) penetrate through the supporting seats (4) and are matched with mounting nuts (8), a pressing plate (9) is arranged on the upper parts of the supporting seats (4), elastic strips (10) are arranged between the pressing plate (9) and the nuts (8), the elastic strips (10) are respectively contacted with the pressing plate (9) and the nuts (8), and the mounting holes (11) are formed in two sides of the fixing plate (1); the upper part of the supporting seat (4) is arc-shaped, the lower part of the pressing plate (9) is arc-shaped, and the supporting seat (4) is matched with the pressing plate (9).

2. A track damper as claimed in claim 1, wherein: cushion blocks (12) are respectively arranged on two sides of the upper portion of the fixing block (2), one end of the pressing plate (9) is located on the upper portion of the track, and the other end of the pressing plate (9) is located above the cushion blocks (12).

3. A track damper as claimed in claim 1, wherein: the side part of the pressure plate (9) is provided with a baffle (13).

4. A track damper as claimed in claim 1, wherein: the upper part of the pressing plate (9) is provided with a groove, and the elastic strip (10) is positioned in the groove.

5. A track damper as set forth in claim 1 wherein: and two sides of the upper part of the fixed block (2) are respectively provided with a stop block (14).

6. A track damper as set forth in claim 1 wherein: the periphery of the upper part of the fixed block (2) is coated with an elastic pad (3).

7. An orbital damper as set forth in any one of claims 1-6 wherein: one side lower part of clamp plate (9) set up filler strip (15), filler strip (15) are located track upper portion.

8. An orbital damper as set forth in claim 7 wherein: the lower part of the filler strip (15) is an arc surface or an inclined surface.