Noise reduction vibration isolator for subway

A vibration isolator and noise reduction technology, applied in roads, buildings, tracks, etc., can solve problems such as affecting the use effect and vibration isolation effect of rubber vibration isolators, low lateral stiffness and weak lateral support force of rubber vibration isolators, etc. Achieve the effect of improving the lateral support force, ensuring the vibration isolation effect, and improving the vibration isolation ability

Active Publication Date: 2022-02-11
JIANGSU QIHAO PRECISION MACHINERY
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  • Summary
  • Abstract
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  • Claims
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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

Method used

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  • Noise reduction vibration isolator for subway
  • Noise reduction vibration isolator for subway

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0040] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the lower fixing part includes a lower cylinder 8, the lower cylinder 8 is fixedly arranged on the lower bottom plate 2, and the lower cylinder 8 is arranged toward one end of the upper supporting plate 1 There is an opening, and the upper plug-in column 6 is provided with a sliding groove 9 cooperating with the lower cylinder body 8, and the lower cylinder body 8 is inserted into the sliding groove 9 and is slidably connected with the sliding groove 9; the connecting guide rod 7 passes through The upper insertion post 6 and its end are arranged in the lower cylinder 8, and one end of the connecting guide rod 7 arranged in the lower cylinder 8 is threadedly connected with a pressure plate 10, and the lower cylinder 8 is filled with damping viscous fluid.

[0041] In this application, when the upper support plate 1 vibrates and moves, the pressure bearing piece 10 connecting the g...

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PUM

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Abstract

The application discloses a subway noise reduction vibration isolator, which includes an upper support plate (1) supporting the road slab and a lower base plate (2) arranged on the base concrete, the upper support plate (1) and the lower base plate ( 2) Arranged in parallel, between the upper support plate (1) and the lower bottom plate (2) there is a cushioning pressure-bearing component and a pressure-bearing guide component; the middle part of the pressure-bearing guide component is provided with a cavity, and the cushioning pressure-bearing component Set in the cavity in the middle of the pressure guide assembly. The invention has the advantages of improving the lateral support force of the rubber vibration isolator to the steel rail and the floating plate, and ensuring the supporting effect and the vibration isolation effect of the whole vibration isolator.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01B19/00
CPCE01B19/003
Inventor 刘国孜乔利军刘艳旭
Owner JIANGSU QIHAO PRECISION MACHINERY
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