CN202124807U

CN202124807U - Elastic polyester base plate

Info

Publication number: CN202124807U
Application number: CN2011201818495U
Authority: CN
Inventors: 李胜; 陈和忠; 尤连兴; 缪宇益; 瞿智烽
Original assignee: Jiangyin Haida Rubber and Plastic Co Ltd
Current assignee: Jiangyin Haida Rubber and Plastic Co Ltd
Priority date: 2011-06-01
Filing date: 2011-06-01
Publication date: 2012-01-25
Anticipated expiration: 2021-06-01

Abstract

The utility model relates to an elastic polyester base plate, which is used for reducing vibration and noises of tracks. The elastic polyester base plate comprises a base plate body (1), wherein the front surface of the base plate body (1) is transversely provided with a plurality of rows of protruding columns (3) in parallel, and the back surface of the base plate body (1) is transversely provided with a plurality of grooves (2) in parallel. The elastic polyester base plate is characterized in that the grooves (2) are arranged at intervals according to the width. Due to the protruding column design of the front surface of the base plate, the carrying capability of a bearing surface is relatively balanced, the elasticity is good, the dynamic stiffness to static stiffness ratio is small, and the rebound speed is high. The bearing capability and the fatigue-resistance performance of the base plate are increased, and the service life of the base plate is greatly prolonged. The top ends of the protruding columns are of a platform shape, so that the stressed area of the protruding columns is larger, and the structural stability for the tracks is good. The black surface adopts the design of parallel grooves at intervals according to the width, so that the stiffness of the whole base plate is reduced furthest on the basis that the strength is ensured.

Description

The polyester elastic pad plate

Technical field

The utility model relates to the backing plate in a kind of track traffic middle orbit fastener system, relates in particular to a kind of polyester elastic pad plate, is used to reduce the vibration and the noise of track.Belong to track traffic fastener antivibration area.

Background technology

In recent years, the construction of track traffic (subway, state's iron, high ferro) is in the ascendant, and at present circuit is basically for ballastless track designs, so how to reduce track vibration and noise becomes the problem that people receive much concern always.Temperature difference urban rail transit construction big, the area that makes a clear distinction between the four seasons objectively requires the fastener backing plate to have universality; Backing plate can adapt under the bigger situation of the temperature difference and still has constant basically elastic performance, and length fatigue life of backing plate also is the eternal pursuit of user certainly.

Present iron lower bolster mainly adopts elastomeric material.This is that the elastomeric state performance that makes full use of rubber provides deformation, still extensively adopts in countries in the world.But the recurring structure deformation simultaneously in actual use of rubber-like iron lower bolster and elastic deformation, deformation recover slowly, moving/quiet ratio of rigidity is big, fatigue performance is bad; And load often exceeds the elastic deformation scope of elastomeric material, and the rigidity of the rail support point that at this time can increase sharply has on the one hand promptly reduced damping property, shortens the application life of backing plate on the other hand greatly.

And some low rigidity iron lower bolsters that utilize thermoplastic polyester elastomer to process utilize unidirectional upper and lower surface dislocation groove structure; Utilize deflection deformation; Though the deformation recovered faster, there is stronger anisotropy in stressed back, promptly under the effect of vertical force; Along rail direction and unbalanced perpendicular to the transverse deformation amount of rail direction, this can influence the comprehensive result of use of fastener system to a certain extent.

Summary of the invention

The purpose of the utility model is to overcome above-mentioned deficiency, provides a kind of and under the bigger situation of the high and low temperature difference, still keeps elasticity and non-sclerous or softening, the polyester elastic pad plate that rigidity is low.

The purpose of the utility model is achieved in that a kind of polyester elastic pad plate; It comprises the backing plate body; Said backing plate body front many row's projections that laterally have been arranged in parallel, the said backing plate body back side many grooves that laterally have been arranged in parallel, said groove width separation.

The utility model polyester elastic pad plate, said projection top is platform-like.

The utility model mainly provides higher screen resilience by flexural deformations, and compressive strain provides assistant spring, lay down vertical load after, deformation can recover rapidly.

Compared with prior art, the beneficial effect of the utility model is:

1, the utility model adopts boss post and channel form composite design; The groove at the backing plate back side mainly deflection deformation of the thermoplastic polyester elastomer through higher bending modulus provides screen resilience; This composite design can be given full play to its excellent counter-bending flexural property and compressive strain, and good springiness, moving/quiet ratio of rigidity is little, rebound velocity is fast.

2, the projection setting in front, the stressed relative equilibrium of bearing surface has good springiness, and the sound ratio of rigidity is little, and rebound velocity is very fast; Improve the supporting capacity and the fatigue performance of backing plate, increased substantially the application life of backing plate; The projection top is platform-like, and lifting surface area is big, and is good to the structural stability of track.

3, because the rigidity of polyester is stronger, the alternate parallel groove setting of width is adopted at the back side, can the basis of guaranteed strength on, reduce the rigidity of whole backing plate to greatest extent.

Description of drawings

Fig. 1 is the Facad structure sketch map of the utility model polyester elastic pad plate.

Fig. 2 is the A-A cut-away view of Fig. 1.

Wherein:

Backing plate body 1, groove 2, projection 3.

The specific embodiment

Referring to Fig. 1 ~ 2, Fig. 1 is the Facad structure sketch map of the utility model polyester elastic pad plate.Fig. 2 is the A-A cut-away view of Fig. 1.Can find out that by Fig. 1 and Fig. 2 the utility model polyester elastic pad plate comprises backing plate body 1, backing plate body 1 back side many grooves 2 that laterally have been arranged in parallel, said groove 2 width separation, backing plate body 1 front many row's projections 3 that laterally have been arranged in parallel.Said projection 3 tops are platform-like.

Quiet rigidity of the utility model and dynamic stiffness can be through changing groove size and the modulus of material therefor of width, the degree of depth and separation change; Can produce the low high-elastic backing plate of rigidity with macromolecular material with the bent modulus of higher change; Improved the supporting capacity and the fatigue performance of backing plate, made it to have good comprehensive functional performance.

Claims

1. polyester elastic pad plate; It comprises backing plate body (1); Said backing plate body (1) front many row's projections (3) that laterally have been arranged in parallel, said backing plate body (1) back side many grooves (2) that laterally have been arranged in parallel is characterized in that: said groove (2) width separation.

2. a kind of polyester elastic pad plate according to claim 1 is characterized in that: said projection (3) top is platform-like.