降低拖拉机噪声是保护环境和改善驾驶员劳动条件的重要措施之一.为此目的,我们接受生产厂的委托,对主要几种国产拖拉机进行研究,以达到降低噪声的要求.就目前的产品而言,拖拉机的发动机和底盘部份是噪声量级大致相当的两个主要噪声源.以东风-50拖拉机为例,空车行驶时,在驾驶员耳旁总噪声级约为90～91dB(A),而发动机噪声、底盘噪声各为87dB(A)左右, Reducing the tractor noise is one of the important measures to protect the environment and improve the working conditions of the driver.For this purpose, we accept the commission from the production plant and conduct research on several domestic tractors in order to achieve noise reduction requirements.For the current products Say, tractor engine and chassis parts are roughly the same size of the noise two main noise source.With the Dongfeng-50 tractor, for example, empty car driving in the driver’s ear next to the total noise level of about 90 ~ 91dB (A ), While the engine noise, chassis noise of 87dB (A) or so,