大跨距双列圆锥滚子轴承热态特性  

Thermal Characteristics of Large Span Double Row Tapered Roller Bearing

作　　者：王一铭 王恒迪[1] 崔永存[1] 李畅 邓四二[1] WANG Yiming;WANG Hengdi;CUI Yongcun;LI Chang;DENG Sier(College of Mechatronics Engineering,Henan University of Science and Technology,Luoyang 471003,Henan,China;Shandong Chaoyang Bearing Co.,Ltd.,Dezhou 252600,Shandong,China)

机构地区：[1]河南科技大学机电工程学院,河南洛阳471003 [2]山东朝阳轴承有限公司,山东德州252600

出　　处：《兵工学报》2024年第4期1285-1296,共12页Acta Armamentarii

基　　金：山东省重点研发计划项目(2020CXGC011003);国家自然科学基金项目(52005158)。

摘　　要：针对摩擦发热会影响轴承寿命的问题,基于滚动轴承动力学理论,建立了考虑滚子修形的重载特种车辆用大跨距双列圆锥滚子轴承动力学分析模型和精细化轴承功耗数学模型,研究结构、工况参数对轴承摩擦功耗的影响规律,并对滚子与套圈的内滚道、外滚道和大挡边之间的接触温度特性进行分析。研究结果表明:转速、径向载荷增大以及内滚道倾角减小,滚子与挡边、滚道接触区最大温度均增大,且挡边接触区最大温度增大速率较快。轴向载荷增大会使受压侧受载最大滚子与套圈大挡边、滚道接触区最大温度均增大,套圈大挡边接触区最大温度增大速率较快;放松侧温度也增大,但增大速率较慢;倾覆力矩会导致两列滚动体温度产生差异,选择合适的跨距可以减小倾覆力矩对轴承温度的影响。The friction heating has an effect on the bearing life.A dynamic analysis model of large span double row tapered roller bearings for heavy duty special vehicles and a refined mathematical model of bearing power consumption,in which the roller shape modification is considered,are established based on the dynamic theory of rolling bearings.The influences of structure and working condition parameters on bearing friction power consumption are studied,and the contact temperature characteristics of the roller and the inner race,the outer race and the big rib are analyzed.The results show that the maximum temperature in the contact area among roller and rib and raceway increases with the increase in rotating speed,radial load and the decrease in inner raceway angle,and the maximum temperature in the contact area between roller and rib increases rapidly.With the increase in axial load,the maximum temperature of the contact area among the maximum loaded roller and the big flange of the ring and the raceway increases,and the maximum temperature of the contact area of the big flange of the ring increases rapidly.The temperature at the relaxation side also increases,but the rate of increase is slow.The overturning moment may cause the temperature difference between the two rows of rolling elelemts,and a suitable span can be selected to reduce the influence of overturning moment on the bearing temperature.

关 键 词：双列圆锥滚子轴承 轴承动力学 对数修形 摩擦功耗 热分析 

分 类 号：TJ810.3[兵器科学与技术—武器系统与运用工程]