装载机/挖掘机操作室主要噪声源及其传播途径的诊断研究  

Study on Identification Source of Main Noise and Transmission Path in Wheel Loader Excavator Cabin

作　　者：崔承勋[1] 

机构地区：[1]延边大学工学院,吉林延吉133002

出　　处：《煤矿机械》2013年第9期310-312,共3页Coal Mine Machinery

摘　　要：以实验法研究诊断装载机/挖掘机操作室主要噪声源及其传播途径的新方法。为了掌握操作室的噪声和振动特点,以操作室模型为对象测试空气声隔声及固体声传递性能。实际车辆工作时,在操作室外测试噪声源/振动源的强度。根据所测得的隔声量/传递函数及噪声源/振动源数据,把操作室噪声分解成通过不同途径传波来的空气声和固体声。经过分析确认主要噪声源和其传播途径,最终提出降低噪声的方案。The experimental study on the identification of noise sources and noise transmission paths was carried out for the cabin noise control of wheel loader/excavator. In order to investigate noise and vibration characteristics of cabin structure,transmission, and radiation tests were performed using cabin assembly models.The noise/vibration source levels were obtained from the real cabins of wheel loader and excavator. Using transfer functions of cabins and real cabins ＇ source data, cabin noise was decomposed into airborne and structureborne noise transmissions. Finally noise sources and major transmission paths were successfully identified for wheel loader and excavator＇s cabins. A method to reduce the noise was proposed.

关 键 词：噪声控制 操作室 空气声 固体声 噪声传播 传递函数 

分 类 号：TD422[矿业工程—矿山机电]