Elastic bearing plate

Abstract

The present invention relates to railway ballast bed accessory, and is especially one kind of elastic bearing plate for use under ballast bed of railway. The elastic bearing plate includes antiwear elastic layers(s) and one buffering elastic body below or inside the antiwear elastic layers(s). The buffering elastic body has relatively lower area rigidity or elastic modulus. The elastic bearing plate has high elasticity, high bearing capacity, high durability, long service life, excellent buffering effect, and capacity of lowering vibration and noise greatly. It may be applied widely under ballast bed of railway for buffering and damping.

Description

technical field [0001] The invention belongs to railway track bed accessories, in particular to an elastic backing plate used in railways, subways, elevated light rails, and high-speed railways, especially an elastic backing plate used under integral track beds, under continuous short track beds or under ballast Elastic backing. Background technique [0002] At present, common track structures include integral track bed, ballast track bed (also known as crushed stone track bed) and continuous short-slab track bed. When the track bed is directly placed on the base (without elastic vibration isolation measures), the stiffness of the track is relatively high. , the vibration generated when the train is running cannot be effectively buffered, and the strong vibration will be transmitted to the base, and spread to the surrounding through the base structure and soil, which will have a negative impact on the work and life of the buildings and residents along the line, and on both s...

AI Technical Summary

Problems solved by technology

However, the working conditions of the elastic backing plate are very harsh. The rough surface of the ballast bed slab or scattered sand and stones will penetrate or wear the rubber surface. , there is also tearing force between gravel, and it may be soaked in oil and water. This simple rubber pad with uniform material structure is too simple and has many disadvantages, including: 1) The contradiction between vibration damping effect, bearing capacity and durability Difficult to solve: the low stiffness has good vibration damping effect, but the material bearing capacity and strength are low, and the material wears quickly or is easy to be damaged and torn; the high stiffness is not good for vibration damping; 2) due to the flat surface, it is used for ballasted tracks 4) There is no drainage channel, and water will easily accumulate during and after heavy rain, which will affect the vibration reduction effect; 5) The amount of elastic backing plate is large, if all new rubber Consumes a lot of resources and is expensive

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