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Sound barrier unit plate

A unit board and sound barrier technology, applied in construction, noise absorption devices, etc., can solve the problems of reduced sound absorption effect, reduced sound absorption effect, etc., and achieve the effects of convenient transportation, improved noise reduction effect, and simple assembly.

Inactive Publication Date: 2014-09-24
JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since the axis of the sound-absorbing plate is perpendicular to the sound-absorbing hole, when the sound wave touches the sound-absorbing material through the sound-absorbing hole on the sound-absorbing plate, some sound waves are still reflected out of the sound-absorbing hole, which reduces the sound-absorbing effect.
The sound wave passes through the sound-absorbing material and hits the surface of the sound-insulating material. The surface of the sound-insulating material is relatively smooth, and the sound wave directly reflects and enters the sound-absorbing material again. If the energy of the sound wave is high, it may penetrate the sound-absorbing material and emit from the sound-absorbing hole, reducing Sound absorption effect

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0021] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, the sound barrier unit board is composed of a sound-absorbing board 1, a foamed cement board 5, and a sound-insulating board 2. The cavity formed between the sound-absorbing board 1 and the sound-insulating board 2 is provided with a foamed cement board 5, and the sound-absorbing board 1 is provided with a sound-absorbing hole 4, and the axial direction of the sound-absorbing hole 4 is at an angle of 30° to the front of the sound-absorbing panel. 70%, the sound insulation board 2 includes the front and two sides, the two sides form an angle of 85° with the front, and the front is provided with a convex cone 3. The sound-absorbing panel 1 includes a front and two sides. The two sides form an angle of 85° with the front. Each side is divided into three small sides. The front is provided with two grooves 6. The cross-section of the bottom is a triangle without a bottom. This triangular structure can coopera...

Embodiment 2

[0023] It is basically the same as the first embodiment, except that the axial direction of the sound-absorbing hole 4 is at an angle of 45° to the front of the sound-absorbing panel, and the sound-absorbing hole 4 is in the shape of a regular hexagonal star, and the diameter of its circumscribed circle is 5mm. The two sides of the sound insulation board 2 form an angle of 89° with the front, and the two sides of the sound-absorbing board 1 form an angle of 89° with the front.

Embodiment 3

[0024] Embodiment 3: It is basically the same as Embodiment 1, except that the axial direction of the sound-absorbing hole 4 forms an angle of 60° with the front of the sound-absorbing panel, and the sound-absorbing hole 4 is in the shape of a regular five-pointed star, and the diameter of its circumscribed circle is 8mm , The opening rate is 90%, the two sides of the sound insulation board 2 form an angle of 87° with the front, and the two sides of the sound-absorbing board 1 form an 87° angle with the front.

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Abstract

The invention discloses a sound barrier unit plate, which belongs to the field of environment protection. The sound barrier unit plate consists of a sound absorption plate, a sound absorption material and a sound isolation plate, wherein the sound absorption material is arranged in a cavity formed between the sound absorption plate and the sound isolation plate. Sound waves enter a foamed cement plate sound absorption material through sound absorption holes formed in the sound absorption plate, a great number of tiny communicated pores are formed inside the sound absorption material, the sound waves can go deep into the material along the pores to generate friction effects with the material, and the sound energy is converted into heat energy. The sound waves passing through the foamed cement plate sound absorption material collide with the surface of a sound isolation material, and are then reflected to the foamed cement plate sound absorption material to generate secondary friction effects with the material, and the sound energy is converted into the heat energy for a second time, so the sound isolation effect is achieved.

Description

technical field [0001] The invention belongs to the field of environmental protection, in particular to a sound barrier unit plate. Background technique [0002] The noise generated during the operation of high-speed railways and road vehicles or equipment will cause relatively large noise pollution to residents, schools and office areas along the road and nearby. At present, sound barriers are mainly used to block the transmission of noise, so as to achieve the purpose of preventing and controlling noise pollution. The traditional sound barrier unit board is composed of a sound-absorbing board, a sound-absorbing material, and a sound-insulating board. The sound-absorbing material is set in the cavity formed between the sound-absorbing board and the sound-insulating board, and the sound waves pass through the sound-absorbing holes on the sound-absorbing board. Entering the sound-absorbing material, the sound wave can go deep into the material along the pores of the sound-ab...

Claims

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Application Information

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IPC IPC(8): E01F8/00
Inventor 冯雷高琍玲马成良蒋立新王卫东宣君许晶晶
Owner JIANGSU XINGUANG ENVIRONMENTAL PROTECTION ENG
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