Vibration-reducing turnout structure for urban rail transit

Abstract

Disclosed is an urban railway transport vibration attenuation turnout structure. The urban railway transport vibration attenuation turnout structure comprises stock rails, switch rails and guide rails. The stock rails, the switch rails and the guide rails are mounted on a track bed through vibration attenuation fastener systems; the heel ends of the switch rails are provided with elastic bendable sections; the width of rail limbs of the working sides of the elastic bendable section is smaller than that of rail limbs of the working sides of the other sections of the switch rails; the stock rails, the heel ends of the switch rails and joints of the guide rails are connected through vibration attenuation joint clamping plates and common joint clamping plates, the vibration attenuation joint clamping plates are mounted on the non-working sides, and the common joint clamping plates are disposed on the working sides; and the top end faces of the vibration attenuation joint clamping plates are higher than the rail top faces of connected steel rails, and the top end faces of the vibration attenuation joint clamping plates have inclination consistent with that of wheel treads, so that the wheel treads operate on the top end faces of the vibration attenuation clamping plates when a train passes through joints. By means of the urban railway transport vibration attenuation turnout structure, vibration and noise caused by mutual impact of wheels and rails are reduced, the service life of turnout parts is prolonged, moreover, turnout construction is convenient, and less daily maintaining is needed.

Description

technical field [0001] The invention belongs to the technical field of vibration-damping turnouts, and in particular relates to a vibration-damping turnout structure for urban rail transit. Background technique [0002] Urban rail transit has higher requirements on the safety and stability of line operation, and the lines run through densely populated urban areas, with high environmental protection standards. With the continuous acceleration of train running speed and more intensive traffic volume, the vibration and noise problems caused by the collision of wheels and rails during operation will affect the service life of turnouts and the surrounding environment, which not only increases the daily maintenance cost, but also It restricts the development of properties and is not conducive to the development of the surrounding economy. [0003] A large number of common separate fasteners are used in the existing urban rail transit. Usually, a rubber backing plate is installed ...

AI Technical Summary

Problems solved by technology

With the continuous acceleration of train running speed and more intensive traffic volume, the vibration and noise problems caused by the collision of wheels and rails during operation will affect the service life of turnouts and the surrounding environment, which not only increases the daily maintenance cost, but also It restricts the development of properties and is not conducive to the development of the surrounding economy

[0003] A large number of common separate fasteners are used in the existing urban rail transit. Usually, a rubber backing plate is installed under the iron backing plate to provide elasticity for the track system. The iron backing plate is fixed on the top of the sleeper by the bolts of the switch tie. The backing plate is subject to large compression deformation, which makes it lose part of its elasticity, and the vibration damping performance of the fastener is difficult to fully exert

[0004] In recent years, in order to improve the vibration damping performance of urban rail transit, a small number of turnouts have adopted integral vulcanized vibration damping fasteners, which can basically meet the needs of line applications. However, due to the overall vulcanized design, the manufacturing cost is high. The stability, pull-out resistance and vibration damping effect of the fastener system will be greatly reduced, and it needs to be replaced as a whole, which increases the maintenance cost. Therefore, the vulcanized vibration damping fastener has not been widely used so far.

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