Noise-absorbing device for eliminating tunnel noise

Abstract

The invention discloses a noise-absorbing device for eliminating tunnel noise. The noise-absorbing device comprises a noise-absorbing partition board and noise-eliminating spheres, wherein the noise-absorbing partition board is provided with a plurality of noise-absorbing through holes, and the noise-eliminating spheres are arranged on one of the side surfaces of the noise-absorbing partition board and correspond to the noise-absorbing through holes one by one separately; the noise-eliminating spheres comprise supporting shells and hollow rubber spheres, wherein the supporting shells are spherical, the hollow rubber spheres are positioned in the supporting shells, and the outer surfaces of the hollow rubber spheres and the inner surfaces of the supporting shells are bonded and fixed; a plurality of rubber bulges uniformly distributed are arranged on the inner walls of the hollow rubber spheres; noise inlets are formed in the same position of the supporting shells and the hollow rubberspheres; and the noise inlets of each noise-eliminating sphere correspondingly and fixedly communicate with the corresponding noise-absorbing through holes through connecting assemblies. The noise generated in a tunnel can be effectively eliminated to ensure the noise reduction effect; and in addition, once the noise-absorbing device is partially damaged, the noise-absorbing device is not needed to be replaced integrally, and the repair of the noise-absorbing device can be completed only by replacing a damaged part.

Description

technical field [0001] The invention relates to a sound-absorbing device, in particular to a sound-absorbing device for tunnel noise elimination. Background technique [0002] Noise is the sound produced by the sounding body when it vibrates irregularly. It should not exist in a certain environment, and the noise will directly affect people's physical and mental health and mood. Tunnels are an effective and direct means of passing through mountains at this stage, and are being used more and more in engineering. However, due to the airtightness of the tunnel space, the sound generated by the friction between the vehicle body and the air cannot be diffused in time when the vehicle passes, and it will be heard in a short time. Noise is formed inside, which will cause an impact on the passing of subsequent vehicles. In order to reduce the noise in the tunnel, most of the sound-absorbing panels used in existing tunnels are porous media. Although they can play a certain role in n...

AI Technical Summary

Problems solved by technology

[0003] 1. It cannot absorb a large amount of noise in a short time, causing the noise to be reflected back into the tunnel chamber, causing secondary noise impact on the tunnel;

[0004] 2. Once the sound-absorbing panel is damaged, it needs to be replaced as a whole, resulting in high management costs;

[0005] 3. The sound-absorbing panel only relies on the holes of porous media to reduce noise, resulting in low utilization rate of the panel and poor noise reduction effect

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