Load Characteristics of Axle Box Bearing Raceway of High-speed EMU

被引：6

作者：

Zha H. ^{[1
]}

Ren Z. ^{[1
]}

Xu N. ^{[1
]}

机构：

[1] School of Mechanical and Electronic Control Engineering, Beijing Jiaotong University, Beijing

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2020年 / 56卷 / 04期

关键词：

Axle box bearing; Contact load; High speed vehicle; Vibration acceleration;

D O I：

10.3901/JME.2020.04.135

中图分类号：

学科分类号：

摘要：

Axle box bearing is an important core department of the train running parts, but it becomes one of the vulnerable parts, because of its bad load condition. It is of great significance for bearing life prediction based on load distribution and ensuring its safety and reliability by studying the load characteristics between roller raceways in operation. Based on the dynamic model of vehicle-track dynamic model with bearings, the contact load characteristics of roller raceway under track excitation and train running speed are studied. The results show that under the condition of no excitation, the speed has little effect on the contact load of the roller raceway, but in the non-bearing area, the roller will contact with the outer raceway, and the contact load is square with the speed. The track excitation condition will affect the instantaneous value of contact load of roller raceway. The standard deviation of the contact load on the outer ring increases with the speed of the vehicle. By studying the maximum contact load on the outer ring, it is found that with the increase of speed, the greater the vibration caused by track excitation, the greater the fluctuation of contact load data of roller raceway. © 2020 Journal of Mechanical Engineering.

引用

页码：135 / 142

页数：7

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