Double-layer rail vibration reduction fastener with blocking shoulder

Abstract

The invention relates to a double-layer rail vibration reduction fastener with a blocking shoulder, which aims to simplify the locking mode of the double-layer vibration reduction fastener, relieve the vibration of an elastic strip, overcome the problem that a connecting part is easy to wear, improve the transverse and longitudinal rigidity and deflection rigidity of the fastener and effectively reduce the noise and the wear of a steel rail in the operation process. The vibration isolation sleeper comprises an under-plate insulating substrate, a lower iron substrate, a vibration isolation substrate and an upper iron substrate which are sequentially stacked from bottom to top from the surface of the sleeper, and is characterized in that corresponding square limiting blocking shoulders are arranged on the two sides of the vibration isolation substrate and the two sides of the lower iron substrate; locking pins which longitudinally penetrate through the lower iron substrate, the vibrationisolation substrate limiting blocking shoulder and the lower protruding portion of the upper iron substrate and vertically lock the lower iron substrate, the vibration isolation substrate limiting blocking shoulder and the lower protruding portion are arranged on the two sides of the steel rail. The lower iron substrate and the vibration isolation substrate are anchored on the sleeper through anchor bolts; an under-rail substrate is laid on the plate face of the middle of the upper iron substrate, a steel rail is located on the under-rail substrate, and an elastic strip installed and locked on the upper iron substrate acts on the steel rail through an insulation gauge cushion block and tightly presses the steel rail.

Description

technical field [0001] The invention belongs to the technical field of rail engineering vibration-damping fasteners, in particular to a double-layer rail vibration-damping fastener with a shoulder. Background technique [0002] While rail transit brings convenience to people's travel, wheel-rail vibration also brings vibration and noise pollution to surrounding buildings. Using vibration-damping fasteners on the track is one of the effective ways to reduce the vibration and noise of the surrounding environment. [0003] The existing double-layer shock-absorbing fastener has two ways of locking the lower part and locking the upper part. [0004] The basic idea of ​​the lower locking type double-layer vibration-damping fastener is that the lower iron backing plate has two independent through-holes that penetrate up and down. By installing anchor bolts at the through-holes, the lower iron backing plate and the under-board backing plate are anchored to the sleeper. Its advanta...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a double-layer rail vibration-damping fastener with a shoulder, so as to simplify the locking method of the double-layer vibration-damping fastener, alleviate the vibration of the elastic bar, overcome the problem that the connecting parts are easy to wear, and improve the buckle. The transverse, longitudinal and deflection rigidity of the parts can effectively reduce the noise and wear of the rail during operation

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