论文部分内容阅读
声波控制装置有一个从一侧到另一侧贯通的声波通过场,配置了能够控制声音传播方向的多个中空通路,其与车轮接触部和隔音壁上端连结线至少延伸到下方,又从车体侧墙下部延伸。该装置的一侧对着车轮方向;另一侧对着隔音壁方向。声波控制装置可将主噪声源(即轨道与车轮接触部位)产生的噪声,沿声波控制装置的中空通路的方向,集中地传播到隔音壁上。本装置能有效地降低运行中铁道车辆发生的噪声。众所周知,人们越来越注意到噪声的公害,并积极地研究减轻噪声的隔音壁。由于声源、环境等条件不同,发生的噪声也
The sound wave control device has a sound wave passage field penetrating from one side to the other side and is provided with a plurality of hollow passages capable of controlling the direction of sound transmission. The connection line between the wheel contact portion and the soundproof wall upper end extends at least downward, The lower part of the body side wall extension. One side of the device is facing the wheel direction; the other side is facing the soundproof wall. The sound wave control device can focus the noise generated by the main noise source (that is, the contact point between the rail and the wheel) along the direction of the hollow channel of the sound wave control device to the soundproof wall. The device can effectively reduce the noise of railway vehicles in operation. As we all know, people pay more and more attention to the noise pollution, and actively study the noise-reducing soundproof wall. As the sound source, the environment and other conditions are different, the noise occurs