Pad for subway track

Abstract

The invention provides a pad for a subway track. The mechanical performance of a pad body of the pad is greatly improved, the ratio of dynamic and static stiffness is less than 1.8, and the static stiffness change rate is less than 25%. Energy-absorbing groups with completely opposite height changes are arranged in an upper accommodating cavity and a lower accommodating cavity to ensure the stability of the structure of the pad. The energy-absorbing groups with the height change in the ladder form in the upper accommodating cavity are utilized to form different compression zones, so that the energy-absorbing groups of different heights have different static stiffness, the pad body has the step stiffness accordingly, and automatic adjustment of the static stiffness is achieved. The arrangement of a plurality of upper energy absorption zones increases the adjustment density of the static stiffness and makes the adjustment more precise. The surface area of auxiliary energy absorbing sheets is reduced by grooves to increase the deformability of the auxiliary energy absorbing sheets, so that the sheets can be better compressed and achieve a better buffering effect on the subway.

Description

technical field [0001] The invention relates to a railway track system, in particular to a backing plate for a subway track. Background technique [0002] With the development of economy and society, people pay more and more attention to the problem of urban transportation. The advantages of large transportation, convenience and speed make the subway become a very important mode of urban transportation. The subway has become an important symbol of a country's comprehensive national strength, urban economic strength, people's living standards and modernization. The construction of the subway can not only solve the sustainable problem of urban transportation, but more importantly, it is also an aid to the economic development of the entire region. pusher. [0003] In subway construction, the use of rubber backing plates is essential. The primary function of subway backing plates is to buffer the high-speed vibration and impact that occurs when vehicles pass through the rails,...

AI Technical Summary

Problems solved by technology

Existing rubber pads generally have problems such as poor shock absorption and noise reduction, large deformation after repeated compression, and poor mechanical strength.

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