摘要
基于高速铁路客车轴箱系统多界面接触力学分析模型,在轴箱轴承工况条件下,分析轴箱轴承滚动体与内、外圈间的接触载荷分布情况;建立高速铁路客车轴箱双列圆锥滚子轴承脂润滑弹流模型,并采用有限差分法数值解法。数值计算结果与最小膜厚公式获得的最小膜厚度进行比较,而最大润滑压力与相应的赫兹应力进行了比较。结果表明,在给定运行工况条件下,随着运行速度的增大,轴承滚道润滑接触形成的油膜压力减小,油膜增大;而当轴承载荷增大时,其油膜厚度减小,润滑压力增大。
Based on high speed railway passenger ear axle box system inteoCace contact mechanics analysis model, under the condition of the axle box bearing conditions, analysis of axle box bearings between roller and inner and outer contact load distribution; Building high speed railway passenger car axle box double row tapered roller bearing grease elastohydrodynamic lubrication model, and USES the finite difference numerical solution method. Numerical calculation results and the minimum film thickness formula to obtain the minimum film thickness are compared, and the maximum pressure lubrication and the corresponding Hertz stress are compared. Results show that under the condition of a given operation condition, with the increase of running speed, the formation of oil film lubrication bearing raceway contact pressure is reduced, the oil film; When bearing load increases, the oil film thickness decreases, and pressure lubrication.
出处
《机械设计与制造》
北大核心
2017年第5期131-134,共4页
Machinery Design & Manufacture
基金
国家重点基础研究发展计划项目(2011CB706601/2)
国家自然科学基金项目(51575421)
关键词
铁路客车轴箱
圆锥滚子轴承
接触载荷
弹性流体润滑
油膜厚度
油膜压力
脂润滑
Railway Passenger Car
Axle Bearing Assembly
Contact Loading
Elasto Hydrodynamic Lubrication
Film Thickness
Maximum Film Pressure
Grease Lubrication.
