转速对多楔带三轮传动系统噪声的影响规律研究

Research on the Influence of Rotational Speed on the Noise of V-ribbed Belt Three-wheel Drive System

为了研究转速对多楔带三轮传动系统噪声大小的影响规律,以6PK多楔带为例,基于声阵列原理搭建了多楔带三轮传动系统噪声测试试验装置,得到了不同转速下三轮传动系统中声压的时域信号和噪声声压分布云图。随着转速的增加,多楔带三轮传动系统中的噪声大小逐渐增加。多楔带横向振动引起的低频噪声随着转速的增加逐渐增大,通过多普勒激光测振仪测量得出多楔带横向振动噪声的增加是由于多楔带横向振动幅值的增大引起的;通过噪声声压云图可以看出,多楔带与带轮之间摩擦引起的高频摩擦噪声大小随着转速的增加而增大;当多楔带三轮传动系统发生共振时,传动系统的噪声明显增加。

In order to study the influence of speed on the noise level of the V-ribbed belt three-wheel drive system,taking the 6 PK V-ribbed belt as an example,a noise test device for the three-wheel drive system of the V-ribbed belt is built based on the acoustic array principle,and the time-domain signal and noise sound pressure distribution cloud diagram of the sound pressure in the transmission system of three wheels at different speeds are obtained.As the rotation speed increases,the noise in the V-belt three-wheel drive system gradually increases.The low-frequency noise caused by the lateral vibration of the V-ribbed belt gradually increases with the increase of the speed.The increase in the lateral vibration noise of the V-ribbed belt is measured by the Doppler laser vibrometer is caused by the increase in the amplitude of the lateral vibration of the V-ribbed belt.It can be seen from the noise sound pressure cloud diagram that the high frequency friction noise caused by the friction between the V-ribbed belt and the pulley increases with the increase of the speed,when the three-wheel drive system of the V-ribbed belt resonates,the transmission system the noise has increased significantly.