Steel rail damping fastener used for depot line of metro depot

Abstract

The invention discloses a steel rail damping fastener used for a depot line of a metro depot. The steel rail damping fastener comprises a base, a base plate under a plate, a vibration insulation cushion, a floating iron base plate and a lateral displacement constraint layer. The base is arranged on a rail bearing. The base plate under the plate is clamped between a base iron base plate and the rail bearing. The vibration insulation cushion is clamped between the base iron base plate and the base plate under the plate and arranged to be like a Chinese character 'zhong' and extends out of a cavity arranged to be like the Chinese character 'zhong'. The floating iron base plate is arranged on the base. The lateral displacement constraint layer is clamped between the side wall of the floating iron base plate and a blocking shoulder. The floating iron base plate is floated by the vibration insulation cushion and the lateral displacement constraint layer, namely the floating iron base plate does not make contact with the base iron base plate. The steel rail damping fastener can constrain transverse movement and vertical movement of a steel rail, namely the vibration insulation cushion constrains the vertical buffering capacity of the steel rail, and the lateral displacement constraint layer limits transverse movement of a railhead. The mutual influence of the two constraints is low, and the rigidity values, in the two directions, of the fastener can be independently designed according to actual requirements, so that the good vibration insulation is achieved under the condition that traveling safety is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of vibration-damping fasteners for urban rail transit, and relates to rail vibration-damping fasteners, in particular to a rail vibration-damping fastener used for inner lines of subway depots. Background technique [0002] When developing the superstructure property of the subway depot that has been put into normal operation, the vibration of the superstructure will exceed the standard due to the operation of the subway. At this time, an effective control measure is to replace the ordinary fasteners in the depot with relatively strong fasteners. Vibration-absorbing fasteners with good vibration isolation capabilities. [0003] The trains running in the depot are not only at low speed, but also empty, so the inner line of the depot generally adopts smaller 50Kg / m steel rails, and does not make seamless treatment, and the fasteners and sleepers used are also light and compact, such as DJK5-1 Type fasteners o...

AI Technical Summary

Problems solved by technology

[0007] The present invention solves the deficiencies of the prior art, and provides a rail damping fastener with reasonable structural design and novelty for the inner line of the subway depot, which can not only directly replace the existing common fasteners for the inner line of the subway depot, but also The cushioning sinking of the rail can be increased without increasing the lateral displacement of the rail head, which not only ensures the safety of driving, but also has a high vibration isolation capability, which can effectively solve the problem caused by the operation of the train in the development of the superstructure property. Environmental Vibration Pollution

Images