Slide-belt track pad

Abstract

A slide-belt track pad is characterized in that the front and rear ends of the middle of a slide plate are of semicircular structure, the upper and lower ends of the middle of the slide plate are provided with slide grooves, a circular slide belt covers the center slide grooves of the slide plate, the inner side of the circular slide belt is a smooth face, and the outer side of the circular slidebelt is a rough face; the slide plate, a rubber pad and an elevator pad are fixed sequentially onto a concrete sleeper through fastener bolts; a steel track is mounted on the circular slide belt and is fixed through fastener springs and fastener bolts. The slide-belt track pad has the advantages that inner temperature stress of a seamless line steel track can be automatically released; longitudinal resistance can be decreased without decreasing fastening pressure of the fasteners; it can be ensured that an under-track pad never slips out when the steel track and the fasteners normally slide; maintenance workload is greatly reduced; the defects of the existing measures are effectively made up; the problems are avoided that, for instance, excessive inner stress of a seamless line steel trackcauses run-off of the expanded track and breakage of the steel track.

Description

technical field [0001] The invention relates to railway traffic equipment, in particular to a sliding belt type track backing plate. Background technique [0002] The seamless line eliminates a large number of rail joints, so it has the advantages of smooth driving, high passenger comfort, and small maintenance and repair workload. It has been widely used in the rapid development of high-speed railways and heavy-duty railways in my country. In the hot summer (or cold winter) season, huge temperature pressure (or tension) will be generated inside the steel rail of the seamless line. Therefore, it is very necessary to carry out stress relief for seamless lines. [0003] At present, seamless lines are divided into two types: temperature stress type and radiated temperature stress type. Among them, the two ends of the long rail of the temperature-stressed seamless line are limited by the high-strength joints and the longitudinal resistance of the ballast bed, and the expansion...

AI Technical Summary

Problems solved by technology

[0004] The stability of the above-mentioned temperature-stressed seamless line has certain safety hazards due to the huge temperature force inside the rail. The two methods adopted by the stress-relieving seamless line have a certain effect on releasing the internal temperature stress of the rail, but they lack real-time Due to the high frictional resistance between the bottom of the rail and the rubber pad under the rail, the rubber pad under the rail will slide out when the rail stretches, reducing its support elasticity, and even appearing on the rail. The bottom is empty, causing the line to be uneven, which seriously affects the stability of the high-speed train and the safety of the track structure.

Therefore, the existing methods can no longer meet the requirements of high-speed railways, and there is an urgent need to develop a special under-rail backing plate, which can not only reduce the longitudinal resistance of the fasteners without reducing the buckle pressure, but also ensure that the rails are in contact with the rails. The backing plate under the rail will not slide out when the fasteners slide normally

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