The invention provides a composite sound absorption type sound barrier and a train, and the composite sound absorption type sound barrier comprises a sound barrier structure which is used for absorbing noise generated in the running process of the train; one part of the rotating mechanism is rotationally connected with the sound barrier structure, the other part of the rotating mechanism is fixedly connected with the train, and the rotating mechanism is used for driving the sound barrier structure to rotate. According to the sound barrier, the material sound absorption effect can be achieved through the first sound absorption panel, the second sound absorption panel and the back plate, the resonance sound absorption phenomenon can be generated through the cavity between the first sound absorption panel and the second sound absorption panel, and the noise reduction capacity of the sound barrier can be effectively improved through the two sound absorption noise reduction mechanisms of material sound absorption and resonance sound absorption; the composite sound absorption type sound barrier is directly installed on the side face of the bottom of the vehicle, compared with a traditional sound barrier, the composite sound absorption type sound barrier is closer to a sound source, the noise reduction effect of the sound barrier can be effectively improved, and the problem that the traditional sound barrier influences city attractiveness and the view of passengers is solved.
本发明提供一种复合吸声型声屏障及列车,所述复合吸声型声屏障包括:声屏障结构,用于吸收所述列车行驶过程中产生的噪音;转动机构,一部分与所述声屏障结构转动式连接,一部分与所述列车固定连接,所述转动机构用于驱动所述声屏障结构旋转。本发明通过第一吸声面板、第二吸声面板和背板可起到材料吸声的效果,且通过第一吸声面板与第二吸声面板之间存在空腔,可产生共振吸声现象,通过材料吸声和共振吸声两种吸声降噪机理,可有效提升声屏障的降噪能力;且通过将该复合吸声型声屏障直接安装于车辆底部的侧面位置,与传统声屏障相比,其距离声源更近,可有效提升声屏障的降噪效果,且规避了传统声屏障影响城市美观和乘客视野的问题。
Composite sound absorption type sound barrier and train
一种复合吸声型声屏障及列车
2024-11-29
Patent
Electronic Resource
Chinese
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