Noise reduction mechanism and sound barrier plate thereof

Abstract

The invention discloses a noise reduction mechanism and application thereof on a sound barrier. The noise reduction mechanism comprises a closed noise reduction cavity enclosed by a top plate, side plates and a base plate, a noise reduction part is arranged in the noise reduction cavity, and a plurality of sound absorption holes penetrating through the top plate are formed in the top plate. The noise reduction mechanism is reasonable in design and changeable in modeling and has a good sound absorption effect, the noise reduction mechanism can be molded at one time, and a pipeline also can be formed, so that the working efficiency is improved, the production cost is saved, and production development from artificialization to mechanization can be realized; a sound absorption material is eliminated, thereby being safer, more environment-friendly and healthier; multiple cavity structures are adopted, so that diversification of product types is realized; light and fireproof foam is adopted, so that weight is light, and the service life is long; and an interlayer adopts a tinfoil paper material, so that diversification of noise reduction methods is realized.

Description

technical field [0001] The invention relates to a noise reduction mechanism, in particular to a noise reduction mechanism and a sound barrier plate thereof. Background technique [0002] With the rapid development of China's economy and the continuous acceleration of urbanization, highways, railways, urban rail transit and other transportation methods have developed rapidly. These roads will inevitably pass through densely populated residential areas during construction, and the traffic noise generated It has brought some interference to the work, life and study of residents near the road. National environmental monitoring results show that: about 17% of cities are moderately polluted in road traffic noise, and 49% are lightly polluted. Building sound barriers to solve traffic noise pollution has become the main way to control urban road noise. The current types of sound barriers mainly include metal sound barriers (metal louvers, metal mesh holes), concrete sound barriers ...

AI Technical Summary

Problems solved by technology

The current noise reduction mechanism of the sound barrier is generally filled with sound-absorbing cotton to reduce noise. Although it can meet the above two most basic requirements, the following disadvantages inevitably arise: First, the filled absorption Acoustic cotton cannot be guaranteed to be in the noise reduction mechanism all the time. It will move out of the noise reduction mechanism over time and move into the air through the sound absorption holes of the sound barrier, causing secondary pollution to the human body, causing respiratory diseases and skin diseases. Even severe cases can cause lung cancer and other diseases; second, the sound-absorbing cotton is greatly affected by weather changes, especially in wind and rain, which will make the sound-absorbing cotton absorb water and affect the sound-absorbing effect. In severe cases, the sound-absorbing cotton will also fail. It cannot meet the noise reduction requirements; thirdly, the filling of sound-absorbing cotton needs to be manually operated. For the operators, long-term engagement in such work will cause occupational diseases and endanger their health. For the manufacturers, the production efficiency is low and the production cost is high. ; Fourth, the internal structure of the noise reduction mechanism is single, and the product is single, which cannot form a diversified product, so that customers have no diversified choices, and there is no competitive advantage for sales

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