Measured load spectra of the bearing in high-speed train gearbox under different gear meshing conditions

Yu Hou, Xi Wang, Shouguang Sun, Hongbo Que, Rubing Guo, Xinhai Lin, Siqin Jin, Chengpan Wu, Yue Zhou, Xiaolong Liu

Railway Engineering Science ›› 2023, Vol. 31 ›› Issue (1) : 37-51.

Railway Engineering Science ›› 2023, Vol. 31 ›› Issue (1) : 37-51. DOI: 10.1007/s40534-022-00282-1
Article

Measured load spectra of the bearing in high-speed train gearbox under different gear meshing conditions

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Abstract

The load spectrum is a crucial factor for assessing the fatigue reliability of in-service rolling element bearings in transmission systems. For a bearing in a high-speed train gearbox, a measurement technique based on strain detection of bearing outer ring was used to instrument the bearing and determine the time histories of the distributed load in the bearing under different gear meshing conditions. Accordingly, the load spectrum of the total radial load carried by the bearing was compiled. The mean value and class interval of the obtained load spectrum were found to vary non-monotonously with the speed and torque of gear meshing, which was considered to be caused by the vibration of the shaft and the bearing cage. As the realistic service load input of bearing life assessment, the measured load spectrum under different gear meshing conditions can be used to predict gearbox bearing life realistically based on the damage-equivalent principle and actual operating conditions.

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Yu Hou, Xi Wang, Shouguang Sun, Hongbo Que, Rubing Guo, Xinhai Lin, Siqin Jin, Chengpan Wu, Yue Zhou, Xiaolong Liu. Measured load spectra of the bearing in high-speed train gearbox under different gear meshing conditions. Railway Engineering Science, 2023, 31(1): 37‒51 https://doi.org/10.1007/s40534-022-00282-1

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Funding
National Natural Science Foundation of China(U1834202)

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