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噪声作为城市中的三大公害之一,已经日益引起人们的关注。在大中城市的环境噪声中,以各类机动车辆为主的交通运输系统占很大的成份。因而,降低各种类型的汽车噪声,消除公害,已经成为工业集中、人口稠密的城市和工矿区的严重问题。汽车齿轮变速装置是汽车噪声中的主要声源之一。开展降低汽车齿轮变速装置噪声的试验研究,对于改善城市环境、减少噪声对汽车工作人员的危害,都有着重大的意义。为此,我们对安徽六安汽车齿轮厂生产的HF—140型汽车齿轮变速装置进行了噪声评价
As one of the three major public hazards in the city, noise has attracted more and more attention. Among the environmental noise in large and medium-sized cities, transportation systems that mainly include all types of motor vehicles account for a large part. Thus, reducing all types of car noise and eliminating pollution has become a serious problem for industrial clusters and industrial and mining areas where industrial concentration and population are densely populated. Automotive gearboxes are one of the main sources of noise in cars. Carrying out experimental studies on reducing the noise of gear-shifting gears in automobiles has great significance for improving the urban environment and reducing the harm of noise to automobile workers. To this end, we made noise evaluation on the gear transmission HF-140 manufactured by Anhui Lu’an Automobile Gear Factory