铁路客车轴箱轴承接触润滑机理  

Contact Lubrication Mechanism for Axle Box Bearing Used in Passenger Train

作　　者：胡欣[1,2] 常伟[3,2] 奚卉[3,2] 张茜[3,2] 王凤才[1,3,4] 

机构地区：[1]武汉科技大学铁路技术及摩擦学研究中心,武汉430081 [2]联合制造及轴承产业技术研究中心,银川750000 [3]西安交通大学轴承技术研究中心,西安710049 [4]瓦房店轴承集团股份有限责任公司,辽宁瓦房店116300

出　　处：《轴承》2015年第1期1-6,28,共7页Bearing

基　　金：国家自然科学基金项目(51375352);国家重点基础研究发展计划项目(2011CB706601)

摘　　要：基于铁路客车轴箱弹性系统多界面模拟平台,建立轴箱轴承弹性脂润滑模型,研究了不同运行工况下轴箱轴承的润滑性能及规律。结果表明:在给定工况条件下,铁路客车轴箱及轮轴变形会导致2套轴承径向接触载荷分布不均;在各影响因素中,轴挠曲对轴承润滑的影响较小,运行速度对润滑性能影响较大;随着载荷的增加,最小油膜厚度减小,最大润滑接触应力增大,可能导致边界润滑状态。The elastic grease lubricated model for axle box bearing is built based on elastic system multi - interface simulation platform for axle box of passenger train, and the lubricating property and rule of axle box bearing are investigated under different operating conditions. The results show that the non - uniform of radial loads of two bearings could be caused by deformation of axle box and axle of passenger train under the given operating condition. Among the various influential factors, the shaft deflection has little influence on lubrication of bearing, and the effect of operating speed on lubricating performance is larger. The minimum oil film thickness decreases and the maximum lubrication contact pressure increases with the increase of load, which easily lead to boundary lubrication regime.

关 键 词：铁路客车 轴箱轴承 圆柱滚子轴承 接触模型 润滑机理 

分 类 号：TH133.332[机械工程—机械制造及自动化] U264.13[机械工程—车辆工程]