离心式深孔圆柱滚子轴承装置与弹流润滑设计

基于滚动轴承的弹流润滑动力学理论,设计了一种离心式深孔圆柱滚子轴承结构与润滑装置,避免了滚子两端的边界应力集中,并利用随行星架高速转动时产生的离心力将润滑油引导至行星轴轴承内腔,实现行星轴轴承的不间断润滑。通过采用深孔直母线圆柱滚子结构和使用离心式圆柱滚子轴承润滑装置2种方法,解决了行星齿轮传动中行星轴轴承绕太阳轮公转和自转时不能连续可靠润滑的难题。

Design of deep-holed centrifugal cylindrical roller bearing and elastohydrodynamic lubrication

Based on elastohydrodynamic lubrication dynamic theory of the roller bearing,the structure of a deep-holed centrifugal cylindrical roller bearing and its lubrication unit were designed.The concentration of boundary stress could be avoided at both ends of the roller,and the lubricating oil was driven into the inner cavity of the bearings on planetary shafts by the centrifugal force generated during high speed rotation of the planetary frame,so as to lubricate the bearings continuously.With application of deep-holed straight-generatrixed cylindrical rollers and centrifugal lubrication unit for the cylindrical roller bearing,the problem was solved that the bearings on planetary shafts of the planetary gear transmission could not be lubricated continuously during the rotation and revolution of the bearings around the sun gear.