基于表面振动法测试割草机割草器噪声源
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摘要
由于割草机工作时存在振动大、噪声大的问题,以手推式变割幅割草机进行研究,采用表面振动测速法对割草机各部件的噪声源进行识别。在2 000 r/min、100%负荷工况下,对变割幅割草机进行表面振动测试,获得了割草机工作时各部件的振动速度和振动速度1/3倍频程频谱分析;确定割草机工作时各部件的主要振动范围,并估计计算出割草机工作时各部件的声功率级,获得了割草机各主要噪声源的大小排列,确定出了主要噪声源,为降低割草机噪声提供了理论依据。
For the problems of big vibration and big noise in the work of the mower,the manual variable width mower was investigated,and the surface vibration velocity measurement method was used to identify the noise source of each part of the mower. In 2 000 r/min,100% load conditions to cut lawn mower surface vibration test,the lawn mower is working vibration velocity and vibration velocity of components of 1/3 octave spectrum analysis,determine the lawn mower is working on all parts,main vibration range and estimate to calculate the lawn mower parts of sound power level at work,get the size of the lawn mower the main noise source arrangement,identify the main noise sources and provides a theoretical basis to reduce the lawn mower noise.
For the problems of big vibration and big noise in the work of the mower,the manual variable width mower was investigated,and the surface vibration velocity measurement method was used to identify the noise source of each part of the mower. In 2 000 r/min,100% load conditions to cut lawn mower surface vibration test,the lawn mower is working vibration velocity and vibration velocity of components of 1/3 octave spectrum analysis,determine the lawn mower is working on all parts,main vibration range and estimate to calculate the lawn mower parts of sound power level at work,get the size of the lawn mower the main noise source arrangement,identify the main noise sources and provides a theoretical basis to reduce the lawn mower noise.
引文
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12 胡伊贤,李舜酩,张袁元,等.车辆噪声源识别方法综述[J].噪声与振动控制,2012,32(5):11-15Hu Yixian,Li Shunming,Zhang Yuanyuan,et al. Overview of vehicle noise source identification methods[J]. Noise and Vibration Control,2012,32(5):11-15
13 熊建强,黄菊花,廖群.车辆噪声源识别理论与方法分析[J].噪声与振动控制,2011,31(4):97-101Xiong Jianqiang,Huang Juhua,Liao Qun. Analysis of theory and methodology of vehicle noise source identification[J]. Noise and Vibration Control,2011,31(4):97-101
14 宋宝安,郝志勇.通过表面振动测量确定柴油机的噪声源分布[J].拖拉机与农用运输车,2004(6):18-20,24Song Baoan,Hao Zhiyong. Determination of noise source distribution of diesel engine by surface vibration measurement[J]. Tractor&Farm Transport Vehicle,2004(6):18-20,24
2 李玉军,杨建国.基于表面振动法的柴油机辐射噪声测量和分析[J].噪声与振动控制,2007,31(2):71-75Li Yujun,Yang Jianguo. Measurement and analysis of diesel engine radiated noise based on surface vibration method[J]. Noise and Vibration Control,2007,31(2):71-75
3 曹元军,陆小明,翟旭军.联合收割机噪声源识别的实验研究[J].中国农机化学报,2014,35(5):34-36Cao Yuanjun,Lu Xiaoming,Zhai Xujun. Experimental study on noise source identification of combiner[J]. China Agricultural Mechanics Chemistry Journal,2014,35(5):34-36
4 李玮,周新民.小型割草机噪声测试与分析[J].林业机械与木工设备,2014,42(7):21-22Li Wei,Zhou Xinmin. Noise test and analysis of small mowers[J].Forestry Machinery and Woodworking Equipment,2014,42(7):21-22
5 Li Y,Jiang X,Xia J. Research of vibration and noise source identification method of surface-mounted permanent magnet synchronous motor[C]//2013 International Conference on Electrical Machines and Systems(ICEMS). New York:IEEE,2013:42-45
6 Xi J,Feng Z,Wang F. Vibration and noise source identification methods for a diesel engine[J]. Journal of Mechanical Science&Technology,2015,29(1):181-189
7 Cui G X,Gu C S,Gao H. A study on estimating gasoline engine radiated noise based on surface vibration measurement[J]. Applied Mechanics&Materials,2014,694:509-513
8 刘帅,王忠,王林,等.柴油机表面辐射噪声源识别与降噪研究[J].汽车工程. 2016,38(9):1115-1119Liu Shuai,Wang Zhong,Wang Lin,et al. Research on the identification and noise reduction of diesel engine surface radiated noise sources[J]. Automobile Engineering,2016,38(9):1115-1119
9 宋宝安,郝志勇.通过表面振动测量确定柴油机的噪声源分布[J].拖拉机与农用运输车,2004(6):18-20Song Baoan,Hao Zhiyong. Distribution of diesel engine noise sources was determined by surface vibration measurement[J]. Tractors and Farm Transporters,2004(6):18-20
10 曹丽英,杨左文,焦巍,等.锤片式粉碎机噪声源识别及降噪方法[J].农业工程学报,2018,34(7):59-65Cao Liying,Yang Zuowen,Jiao Wei,et al. Noise source identification and noise reduction methods of hammer mill[J]. Journal of Agricultural Engineering,2018,34(7):59-65
11 林漫群,赵鹏辉,景亚兵,等.结合多种方法的单缸汽油机噪声源识别研究[J].机械科学与术,2016,35(9):1396-1401Lin Manqun,Zhao Penghui,Jing Yabing,et al. Research on noise source recognition of single cylinder gasoline engine combining various methods[J]. Mechanical Science and Technology,2016,35(9):1396-1401
12 胡伊贤,李舜酩,张袁元,等.车辆噪声源识别方法综述[J].噪声与振动控制,2012,32(5):11-15Hu Yixian,Li Shunming,Zhang Yuanyuan,et al. Overview of vehicle noise source identification methods[J]. Noise and Vibration Control,2012,32(5):11-15
13 熊建强,黄菊花,廖群.车辆噪声源识别理论与方法分析[J].噪声与振动控制,2011,31(4):97-101Xiong Jianqiang,Huang Juhua,Liao Qun. Analysis of theory and methodology of vehicle noise source identification[J]. Noise and Vibration Control,2011,31(4):97-101
14 宋宝安,郝志勇.通过表面振动测量确定柴油机的噪声源分布[J].拖拉机与农用运输车,2004(6):18-20,24Song Baoan,Hao Zhiyong. Determination of noise source distribution of diesel engine by surface vibration measurement[J]. Tractor&Farm Transport Vehicle,2004(6):18-20,24