Subway noise reduction vibration isolator

Abstract

The invention discloses a subway noise reduction vibration isolator. The subway noise reduction vibration isolator comprises an upper bearing plate (1) and a lower bottom plate (2); the upper bearingplate (1) is used for bearing a road plate, the lower bottom plate (2) is arranged on base concrete, the upper bearing plate (1) and the lower bottom plate (2) are arranged in parallel, and a vibration buffering and pressure bearing assembly and a pressure bearing guide assembly are arranged between the upper bearing plate (1) and the lower bottom plate (2); and a cavity is formed in the middle ofthe pressure bearing guide assembly, and the vibration buffering and pressure bearing assembly is arranged in the cavity in the middle of the pressure bearing guide assembly. The subway noise reduction vibration isolator has the advantages that the transverse supporting force of a rubber vibration isolator on a steel rail and a floating slab is improved, and the supporting effect and the vibration isolation effect of the whole vibration isolator are guaranteed.

Description

technical field [0001] The invention relates to a subway noise-reducing vibration isolator, which belongs to the field of subway construction equipment. Background technique [0002] The subway is an urban transportation system that covers various underground and above-ground right-of-way exclusive, high-density, high-capacity, fast, and electric traction in urban areas. The trains run on fully enclosed lines. The lines located in the central urban area are basically set in underground tunnels, and the lines outside the central urban area are generally set on viaducts or on the ground. [0003] When the subway train moves, the stress generated by the contact surface between the wheel and the rail also moves, and the stress distribution in motion is transmitted to the surrounding contact surface, forming a basic motion stress field, which induces secondary vibrations of nearby underground structures and buildings and noise. Vibration tests show that vibration has a great im...

AI Technical Summary

Problems solved by technology

The rubber vibration isolator has good vertical stiffness, but the horizontal stiffness of the prior art rubber vibration isolator is much smaller than the vertical stiffness, so that the rubber vibration isolator has the disadvantage of low lateral stiffness

For the subway running process, the lateral support force of the rubber vibration isolator to the rail and the floating plate is weak, which affects the use effect and vibration isolation effect of the rubber vibration isolator

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