基于声强法的装载机噪声源识别研究  

An Exploration into the Sound-Intensity-Based Noise Source Identification of the Loader

作　　者：王翠艳[1] 杜伟胜[1] 

机构地区：[1]石家庄铁道大学,河北石家庄050043

出　　处：《国防交通工程与技术》2012年第5期72-74,共3页Traffic Engineering and Technology for National Defence

摘　　要：介绍了声强法测定工程机械辐射噪声的优点与其原理,依据GB/T16404—1996标准,应用P—P声强技术对ZL50G型装载机进行了测试,得到主要噪声源和整个装载机的噪声辐射声功率级,并对其噪声辐射特性进行频谱分析,识别出主要噪声频率构成,为装载机辐射噪声的测试与防治提供了重要依据。The principle and advantages of the sound-intensity-based method for the determination of the radiation noise of engi- neering machinery are introduced in the paper. In the light of the standard of GB/T 16404-1996, the p-p sound intensity tech- nique is used to test the radiation noise of ZL50G type of loader, with the power degree of the main noise sources and the radia- tion noise of the whole loader obtained, the characteristics of the noise in radiation spectrum-analyzed, and the main frequencies of the noise identified. The paper provides an important basis for the tests on and the prevention of the radiation noise of the loader.

关 键 词：声强 声功率 装载机 噪声源 识别 

分 类 号：U415.514[交通运输工程—道路与铁道工程]