轮毂轴承单元密封结构优化设计及试验验证
Optimal Design and Experimental Verification of Sealing Structure of Hub Bearing Units
赵圣卿 1王福荣 1陈兆楠 1刘朝艳 2李冠杰3
作者信息
- 1. 洛阳轴承研究所有限公司,河南 洛阳 471039;河南省高性能轴承技术重点实验室,河南 洛阳 471039
- 2. 南京冠盛汽配有限公司,南京 211300
- 3. 河南科技大学,河南 洛阳 471003
- 折叠
摘要
针对轮毂轴承单元密封结构产生的摩擦力矩占比过大的问题,提出了将密封材料由氟橡胶改进为丁腈橡胶,密封结构减少一个接触唇的改进措施,并通过优化得到最优密封中间唇参数为唇倾斜角65°、唇厚0.6 mm、唇长3.8 mm、过盈量0.35 mm.将密封改进后的轮毂轴承单元进行了密封圈应力、漏脂试验、泥浆试验的仿真分析并通过试验进行验证,结果表明,优化后的轴承应力均满足材料许用应力要求,未出现漏脂现象,油脂含水量增加小于3%,启动、动态摩擦力矩分别降低了24.3%,22.1%,证明了优化后密封结构的可靠性.
Abstract
In response to the problem of excessive friction torque generated by sealing structure of hub bearing units,it is proposed to improve the sealing material from fluororubber to nitrile rubber and reduce one contact lip in sealing structure.Through optimization,the optimal sealing intermediate lip parameters are obtained as lip inclination angle of 65°,lip thickness of 0.6 mm,lip length of 3.8 mm and interference fit of 0.35 mm.The units with improved seals are subjected to simulation analysis of sealing ring stress,grease leakage test and mud test,and verified by experiments.The results show that the bearing stress after optimization meets the allowable stress requirements of materials,and no grease leakage occurs.The moisture content in grease increases by less than 3%,and the starting and dynamic friction torque decreases by 24.3%and 22.1%,respectively,proving the reliability of optimized sealing structure.
关键词
滚动轴承/轮毂轴承单元/密封/优化设计/摩擦力矩/有限元分析/试验Key words
rolling bearing/hub bearing unit/seal/optimal design/friction torque/finite element analysis/experiment引用本文复制引用
出版年
2025
NETL
NSTL
万方数据