联合收获机噪声源识别试验研究  

Noise Sources Identification of Combine Harvester

作　　者：孙攀[1] 李耀明[1] 徐立章[1] 

机构地区：[1]江苏大学现代农业装备与技术教育部重点实验室,江苏镇江212013

出　　处：《农机化研究》2015年第5期216-219,共4页Journal of Agricultural Mechanization Research

基　　金：国家高技术研究发展计划(863计划)项目(2012AA10502);江苏省科技支撑技术项目(BE2012382;BE2012312);江苏高校优势学科建设工程资助项目(苏财教[2011]8号)

摘　　要：针对我国大部分联合收获机的噪声值高于国家标准限值的现状,运用声强法和分别运行法对江苏锐龙4 LZ-5.0 E型履带式联合收获机进行噪声源识别,测试不同工况下驾驶员的耳旁噪声。通过声强云图的分析,识别出该联合收获机的主要噪声源;通过对各部件噪声能量的比较,确定各主要工作部件对驾驶员耳旁噪声的贡献量。结果表明:发动机的贡献量为30.2%,输送槽的贡献量为26.9%,割台的贡献量为10.1%,可为联合收获机的噪声控制提供有效的参考依据。Now the noise of our country combine harvesters omnipresent higher than the national standard rules , Ruilong 4 LZ-5 .0 E type tracked combine harvester was chosen as experimental prototype , the method of sound intensity measure-ment was used to measure its main noise sources , and the method of noise sources separation was used to test the opera-tor’ s ear noise under the different working conditions .Through the analysis of the sound intensity cloud images ,the main noise sources were idendified ,by comparing the energy of the different working parts noise to obtain the contribution of main working parts for the driver＆#39;s ear noise the contribution of engine was 30.2%,the contribution of conveying shute was 26.9% and the contribution of reaping section was 10.1%.The results were sure to provide effective reference frames for controlling the noise of the combine harvesters .

关 键 词：联合收获机 噪声源识别 声强测试 分别运行法 贡献量分析 

分 类 号：S225.3[农业科学—农业机械化工程]