论文部分内容阅读
风扇噪声是压路机的重要噪声源之一。通过试验研究发现冷却风扇高速旋转所产生的空气动力噪声是整机的重要噪声源,特别是发动机高转速、全负荷运转工况下的风扇噪声更为突出。综合理论分析结果,提出了优化冷却风扇运转参数和结构参数的综合改进措施,以便有效地降低压路机冷却风扇对整机噪声的影响,也为其它工程机械风扇的降噪提供参考。
Fan noise is one of the most important sources of noise for road rollers. It is found through experiments that the aerodynamic noise generated by the high-speed rotation of the cooling fan is an important noise source of the whole machine, especially when the engine speed is high and the fan noise under full-load operation is more prominent. According to the results of the comprehensive theoretical analysis, the comprehensive improvement measures to optimize the operating parameters and structural parameters of the cooling fan are put forward, so as to effectively reduce the impact of the cooling fan of the roller on the noise of the whole machine and provide a reference for the noise reduction of other construction machinery fans.