Ballastless track disengaging-resisting elastic anti-vibration cushion

Abstract

The invention discloses a ballastless track disengaging-resisting elastic anti-vibration cushion. The upper surface and the lower surface of a cushion body (1), the upper surface and the lower surface of the bottom of a groove (9) and the outer surface and the inner surface of the side wall of the groove (9) are respectively provided with protrusions (6). The rigidity of the front portion (1a) and the rear portion (1c) of the cushion body (1) in the longitudinal direction is smaller than the rigidity of the middle (1b) of the cushion body (1). The cross section of the periphery of the cushion body (1) is in a fork finger shape (5) with inward notches. According to the ballastless track disengaging-resisting elastic anti-vibration cushion, impact of train loads on the cushion can be effectively buffered, damage to the elastic anti-vibration cushion due to partial disengaging between a roadbed plate and a bed plate is avoided, safe traveling of a high-speed train is better ensured, and the ballastless track disengaging-resisting elastic anti-vibration cushion is long in service life, strong in vibration and noise reduction performance, meanwhile saved in rubber use quantity, low in manufacturing cost and particularly suitable for being used in a double-block type ballastless track on a plate joist bridge with uneven rigidity and a route with poor roadbed conditions.

Description

technical field [0001] The invention relates to an elastic damping pad for double-block ballastless track of a high-speed railway passenger dedicated line. Background technique [0002] my country is building a large-scale rapid passenger dedicated railway network, and the construction of high-speed railways has become an inevitable trend and a practical need for the development of my country's railway system. In order to meet the safety of passenger train operation and the comfort of passengers, the railway line must have the performance of continuous, smooth, stable, durable and less maintenance, so the track structure must have high smoothness and high stability. Ballastless track has technical characteristics such as good structural stability, stability, durability, less maintenance, and economy, so it has been widely used in foreign high-speed railways. [0003] An elastic damping cushion is installed between the ballastless track bed slab and the base plate. Its main ...

AI Technical Summary

Problems solved by technology

[0004] The existing elastic vibration-damping cushion between the double-block ballastless track bed plate and the base plate has the following problems: 1. The stiffness of each part of the entire cushion is uniform

However, when the train load just acts on the cushion and leaves the cushion, the impact on the cushion is the strongest, especially on plate-truss bridges with uneven stiffness and line sections with poor subgrade conditions, the stiffness of the front and rear sections of the cushion High, insufficient elasticity, can not effectively buffer the impact of the train load on the cushion, easily lead to partial separation between the ballast bed plate and the base plate, damage to the elastic damping cushion, and affect the life of the track structure and the safety of high-speed trains

2. There is no sealing design and treatment on the surroundings of the elastic damping cushion, the base plate and the road bed plate. Rainwater, mud, etc. are easy to seep in, which will affect the service life of the rubber.

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