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Noise reduction sound absorption board for high speed rail

A sound-absorbing panel and noise reduction technology, applied in the direction of noise absorbing devices, buildings, etc., can solve the problem of poor sound-absorbing effect of sound-absorbing panels, and achieve the effect of promoting sound energy consumption, good sound-absorbing effect, and improving sound-absorbing effect.

Inactive Publication Date: 2018-03-20
张克勤
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sound-absorbing panel is just a product of the "sound barrier". It is a plate that absorbs incident sound energy by virtue of its own porosity, film effect or resonance effect. Improve

Method used

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Examples

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Embodiment Construction

[0010] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0011] The invention provides a sound-absorbing panel for high-speed rail noise reduction, which is a plate composed of a binder and sound-absorbing particles, the outer surface of the sound-absorbing particles is covered with a layer of binder, and the angular shape coefficient of the sound-absorbing particles covered with the binder Less than 1.3; the sound-absorbing particles include skeleton particles and filling particles, the skeleton particles constitute the skeleton of the sound-absorbing panel, and the filling particles enter the pores between the skeleton particles to form sound-absorbing gaps.

[0012] Further, the average diameter of the cross-section of the sound-absorbing gap is between 0.06-0.09mm, preferably 0.07mm.

[0013] Further, t...

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PUM

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Abstract

The invention discloses a noise reduction sound absorption board for a high speed rail. The noise reduction sound absorption board is a plate formed by binders and sound absorption particles; outer surfaces of the sound absorption particles are covered with the binders; the angle coefficient of the sound absorption particles covered with the binders is less than 1.3; the sound absorption particlesinclude skeleton particles and filling particles; the skeleton particles form sound absorption board skeletons; and the filling particles enter holes between the skeleton particles to form sound absorption gaps. The noise reduction sound absorption board can ensure the structural strength of the sound absorption board and improve the sound absorption coefficient of the sound absorption board at the same time, and can acquire a good sound absorption effect.

Description

technical field [0001] The invention relates to a sound-absorbing panel for high-speed rail noise reduction, which belongs to the technical field of environmental noise pollution control equipment. Background technique [0002] In recent years, the rapid development of high-speed railway construction has brought people fast, comfortable and convenient travel, but the noise pollution generated by the operation of high-speed trains has also caused great harm to the lives of residents on both sides of the railway line. Impact. According to reports, in November 2008, the Building Environment Testing Center of Tsinghua University actually measured that when the 300-350km / h EMUs of the Tianjin-Beijing Intercity Railway were running, the actual peak noise at a distance of 15m from the track on one side of the line could reach 90dB. Exposure to such intensity of noise for a long time will cause great harm to personal health. For controlling this environmental noise pollution, peop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F8/00
CPCE01F8/0017
Inventor 张克勤
Owner 张克勤