Suspension Parameters Selection of Traction Motor Cooling Fan for High Speed Train

doi:10.3901/JME.2020.04.201

Abstract

Abstract: In order to obtain the optimal double-layer suspension parameters of traction motor cooling fan for high-speed train, the selection of the fan suspension parameters is studied under the combination of wheel rail and equipment excitation. The dynamic model of vehicle and equipment is established and the system vibration response has been solved by integral method. According to the influence of fan and frame suspension parameters on the vibration characteristics of the system, the value range of the optimal suspension parameters are selected, and the optimal suspension frequency ratio is determined based on the matching relationship between fan and frame suspension parameters. The results show that the suspension parameters of the fan system have little influence on the comfort of the vehicle, but can affect the vibration of the fan system. The double-layer elastic suspension can significantly reduce the vibration of the fan system itself. When the frame suspension frequency ratio is set at 0.7-0.9 and the fan suspension frequency ratio is set at 1.8-2, the fan system can achieve a better vibration level. According to the matching relation of hanging parameters, the optimal hanging frequency ratio of fan and frame is determined to be 1.8 and 0.9 respectively.

Key words: high speed train, vehicle equipment coupling system, double suspension, vibration severity, ride comfort, suspension parameters

CLC Number:

U270

HE Xiaolong, LUO Tianhong, WANG Shengxue, WU Guoguo, TANG Bangbei, WANG Qunsheng. Suspension Parameters Selection of Traction Motor Cooling Fan for High Speed Train[J]. Journal of Mechanical Engineering, 2020, 56(4): 201-208.

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