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针对某装载机驾驶室内司机耳旁噪声偏高的问题,对装载机各噪声源进行识别分析,测试发现该产品排气噪声为主要噪声源,同时消声器压力损失较高。从消声性能和空气动力性能两个角度出发,提出消声器的优化改进方案,并装机进行试验验证,证明改进效果明显。
Aiming at the problem of high noise near driver ear in driver’s cab, the noise sources of loader are identified and analyzed. The noise of the product is the main noise source and the pressure loss of muffler is high. From the two aspects of muffling performance and aerodynamic performance, we put forward the optimization and improvement plan of muffler, and installed the machine to test and prove that the improvement effect is obvious.