摘要
以三点角接触球轴承环间流域为分析对象,采用多重参考系描述轴承各零件的运动边界,建立轴承油气两相热流耦合计算模型,计算分析轴承环下油孔设计对轴承环间两相流场及温度场的影响规律。结果表明:三点角接触球轴承半内圈油孔开口尺寸适当增大,且相对于油孔半径为3 mm和5 mm,油孔半径为7 mm时的轴承腔内润滑油体积分数较大,轴承腔内温升较低;相较于非承载区半内圈开设环下油孔,承载区半内圈开设环下油孔时的轴承腔内及承载区侧半内圈润滑油体积分数较大,轴承腔内摩擦发热较低,润滑油黏性剪切发热较高。
Taking the inter-ring flow domain of three-point angular contact ball bearings as analysis object,the multiple reference frames are used to describe the motion boundaries of each bearing part,and a coupled calculation model of oil-air two-phase heat flow in the bearings is established to calculate and analyze the influence of under-race oil hole design of the bearings on inter-ring two-phase flow field and temperature field.The results show that when the opening size of oil hole in semi-inner ring of the bearings is appropriately increased,with the oil hole radius of 7 mm,compared to oil hole radii of 3 mm and 5 mm,the volume fraction of lubricating oil within bearing cavity is higher,and the temperature rise is lower;compared to locating the under-race oil hole in semi-inner ring at unloaded zone,positioning it in semi-inner ring at loaded zone results in a higher volume fraction of lubricating oil both within bearing cavity and in semi-inner ring at loaded zone side,leading to lower frictional heat generation within bearing cavity and higher viscous shear heating of lubricating oil.
作者
刘红彬
高创
曲琼
李梦楠
刘明辉
LIU Hongbin;GAO Chuang;QU Qiong;LI Mengnan;LIU Minghui(School of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471000,China;Longmen Laboratory,Luoyang 471023,China;Luoyang Bearing Group Co.,Ltd.,Luoyang 471039,China)
出处
《轴承》
北大核心
2025年第9期28-36,共9页
Bearing
基金
国家科技部专项资助项目(2017ZHZX04)
河南省重大专项资助项目(225101610004)。
关键词
滚动轴承
三点接触球轴承
润滑
两相流
温度场
rolling bearing
three-point contact ball bearing
lubrication
two-phase flow
temperature field
