高速列车轴箱圆锥滚子轴承滚动体的对称修形

Research on Symmetrical Modification of Tapered Roller Bearing of High-Speed Train Journal Box

基于轴承载荷离散分布计算模型的方法,求出高速列车轴箱圆锥滚子轴承受力最大的滚动体及其所受的最大载荷;采用对数修形曲线进行对称修形,用有限元法对受力最大滚动体进行修形设计的精细研究,在不同工况下分析圆锥滚子与内、外圈之间的最大接触应力沿其母线的分布规律,为高速列车轴箱圆锥滚子轴承的修形优化设计提供了指导.

The maximum load and the roller acted by the maximum load of the tapered roller bearing used in High-speed train journal box are calculated through the calculating method based on discrete distribution model of bearing load. Detailed research on symmetrical modification of logarithmic crowned roller is conducted by FEA and the relationship between the crowned quantum of symmetrical logarithmic roller and distribution laws of contact maximum along the profile contact line between the roller,and the races are analyzed under different load cases. The results offer some guides to design the optimum modification.