Lightweight double-layer structure sound barrier and preparation method thereof

Abstract

The invention belongs to the field of sound insulation equipment, and particularly relates to a light double-layer structure sound barrier and a preparation method, the light double-layer structure sound barrier comprises a middle frame, a first hole, a second hole, a first bolt, a second bolt and a barrier unit; first holes are symmetrically formed in the middle frame; second holes are symmetrically formed in the middle frame; the first acoustic board, the second acoustic board, the third acoustic board and the fourth acoustic board are made of acoustic blankets, the two faces of the first board and the two faces of the second board have the acoustic absorption function, the acoustic insulation function can be achieved through the first board and the second board which are made of metal, and the first board and the second board are provided with the first through hole and the second through hole, so that the sound insulation function is achieved. The first plate and the second plate are rotationally connected to the two sides of the middle frame, the first bolt and the second bolt can be loosened to change the angle of the first plate and the angle of the second plate, and therefore the sound insulation device can adapt to different sound insulation areas and angles, and the optimal sound insulation and absorption effect is achieved.

Description

technical field [0001] The invention relates to the field of sound insulation equipment, in particular to a lightweight double-layer structure sound barrier and a preparation method thereof. Background technique [0002] A sound barrier is a device that can isolate sound. It prevents the transmission of sound through reflection, and absorbs sound waves through resonance absorption, so as to achieve the function of sound isolation. [0003] The light-weight sound-absorbing material has a loose and porous structure, and a large area is in contact with the sound wave, thereby converting the sound wave into kinetic energy, thereby achieving the function of consuming the sound wave. [0004] The existing sound barrier has a high density and a good effect of isolating sound, but it cannot absorb the sound inside the sound barrier, and will produce sound wave reflection, resulting in only being able to isolate the external sound but not absorbing the internal sound; A lightweight ...

AI Technical Summary

Problems solved by technology

[0005] In order to make up for the deficiencies of the existing technology, the existing sound barrier has a high density and a good effect of isolating sound, but the sound inside the sound barrier cannot be absorbed, and sound wave reflection will occur, resulting in that it can only isolate the external sound and cannot absorb the internal sound. To solve the problem of sound, the present invention proposes a lightweight double-layer structure sound barrier and its preparation method

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