Composite rubber particle pad for shock absorbing and noise reduction of track and manufacturing method and application of composite rubber particle pad

Abstract

The invention relates to a composite rubber particle pad for shock absorbing and noise reduction of a track. The composite rubber particle pad comprises a surface non-woven fabric layer 1, a bottom face non-woven fabric layer 2 and a composite rubber particle layer 3. The composite rubber particle layer 3 comprises a mixture which is composed of two parts of rubber particles which are produced by crushing of waste automobile tires and one part of a polyurethane adhesion agent, diameters of rubber particles are no more than 3mm, and the thickness of the composite rubber particle pad is within a range of 6mm-8mm. The invention also discloses a method for producing the composite rubber particle pad. The method comprises the steps of material preparation, material feeding, material sealing and the like. The invention further discloses a plate type ballastless track structure in which the composite rubber particle pad is arranged. The structure comprises a steel rail assembly, a track plate 5, a quick-setting motor layer 6, the composite rubber particle pad 7, a cement asphalt (CA) motor layer 8 and a base 9. The composite rubber particle pad has the advantages of being low in cost, convenient to manufacture and good in structure durability, and the manufacturing method has the advantages of being simple in process and capable of achieving quick production.

Description

technical field [0001] The invention relates to a rail shock-absorbing and noise-reducing layer pad and its manufacturing method as well as its application in a slab ballastless track structure, in particular to a shock-absorbing and noise-reducing layer pad made of composite rubber material, its manufacturing method and its application in the slab ballastless track structure. Application in slab ballastless track structure. Background technique [0002] At present, my country's high-speed railways mainly use ballastless tracks. Ballastless tracks have their own characteristics in the application process. Among them, the vibration and noise problems of the track structure are more prominent. Frequent harmful vibrations not only reduce the comfort of the train And it brought huge damage to the internal structure of the track. In order to solve this problem, the industry usually adopts the method of adding a shock-absorbing layer in the track structure to reduce the rigid vibr...

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Problems solved by technology

[0003] The invention discloses a new scheme, which adopts relatively cheap raw materials and manufactures a composite rubber particle pad with a specific thickness according to the analysis of simulation experiments, and solves the problem of the poor shock resistance of the backing plate of the shock-absorbing fastener and the shock-absorbing effect of the shock-absorbing layer in the existing scheme The problem of poor effect, short life and high production cost, and the composite rubber particle pad can also be used as a material for repairing damaged track structures, which solves the problems of high cost, complicated maintenance procedures and long time-consuming caused by pouring resin mortar at the bottom of the board The problem

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