高速圆柱滚子轴承环下润滑热场特性  

Study on thermal field characteristics of high speed cylindrical roller bearing under ring lubrication

作　　者：王轶泽 刘红彬[1] 孟永钢[2] WANG Yize;LIU Hongbin;MENG Yonggang(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang Henan 471003,China;State Key Laboratory of Tribology,Tsinghua University,Beijing 100084,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]清华大学摩擦学国家重点实验室,北京100084

出　　处：《航空动力学报》2024年第5期244-252,共9页Journal of Aerospace Power

基　　金：国家科技部专项(2018YFB2000203);国家自然科学基金(52175086)。

摘　　要：针对高速圆柱滚子轴承高温失效问题,采用流体体积(VOF)方法和多重参考系(MRF)模型对圆柱滚子轴承内圈供油槽和轴承腔进行建模,计算供油槽油液供给情况并将结果施加到轴承腔内模型中,计算环下进油孔相对于滚子多个位置处的温升,并通过加权平均得到轴承腔内最终温升。分析轴承转速、供油量对轴承腔内摩擦温升和润滑油黏性剪切温升的影响规律。结果表明:轴承供油量一定时,转速越高,轴承内部组件摩擦加剧,腔内润滑油受到的黏性剪切力增大,摩擦、黏性温升均升高;轴承转速一定时,由于油量增加造成的润滑油黏性剪切温升的增加和冷却效果的提高在油量较低时前者高于后者,随后两者逐渐持平,黏性温升先下降然后维持在一定水平,摩擦温升降低。该研究对高速圆柱滚子轴承环下润滑设计提供了参考依据。To solve the problem of high temperature failure of cylindrical roller bearing under highspeed operation,volume of fluid(VOF)method and multiple reference frame(MRF)model were used to model the oil supply groove and bearing cavity of cylindrical roller bearing inner ring,respectively,the oil supply situation of the oil supply groove was calculated and the result was applied to the bearing cavity model.The temperature rise of the oil inlet hole under the ring relative to the roller was calculated,and the final temperature rise in the bearing cavity was obtained by weighted average.The effects of bearing speed and oil supply rate on the temperature rise of friction in bearing chamber and the temperature rise of lubricating oil viscous shear were analyzed.The results showed that when the oil supply rate of the bearing was constant,the higher rotational speed indicated all the increase in the friction of the internal components of the bearing,the viscous shear force of the lubricating oil in the cavity and the friction and viscous temperature rise.When the bearing speed was constant,the increase of lubricating oil viscosity shear temperature rise and the improvement of cooling effect caused by the increase of oil content were higher than the latter when the oil content was low,and then these two were gradually flat.The viscosity temperature rise first decreased and then stayed at a certain level,while the friction temperature rise decreased.This study can provide a reference for lubrication design of high-speed cylindrical roller bearing ring.

关 键 词：高速圆柱滚子轴承 环下润滑 轴承腔 计算流体动力学(CFD) 热场 

分 类 号：V233.453[航空宇航科学与技术—航空宇航推进理论与工程] TH133.3[机械工程—机械制造及自动化]