计及轴颈轴向运动的径向滑动轴承润滑分析  

Lubrication Analysis of Plain Journal Bearings Considering Axial Motion of Journal

作　　者：李彪 孙军 朱少禹 付杨杨 苗恩铭[3] 李云强 朱桂香 LI Biao;SUN Jun;ZHU Shaoyu;FU Yangyang;MIAO Enming;LI Yunqiang;ZHU Guixiang(School of Mechanical Engineering,Hefei University of Technology,Hefei, 230009;School of Automobile and Traffic Engineering,Hefei University of Technology,Hefei, 230009;School of Instrument Science and Opto-electronics Engineering,Hefei University ofTechnology,Hefei, 230009;Weichai Power Company Limited,Weifang,Shandong, 261001)

机构地区：[1]合肥工业大学机械工程学院,合肥230009 [2]合肥工业大学汽车与交通工程学院,合肥230009 [3]合肥工业大学仪器科学与光电工程学院,合肥230009 [4]潍柴动力股份有限公司,潍坊261001

出　　处：《中国机械工程》2019年第18期2150-2155,2163,共7页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51490660,51490661);内燃机可靠性国家重点实验室开放基金资助项目(skler-201708)

摘　　要：以轴径向滑动轴承系统为研究对象,综合考虑轴颈轴向运动和倾斜,建立了倾斜轴颈的轴承的流体动力润滑模型,采用有限差分法求解Reynolds方程,分析了不同的轴颈倾角、转速、偏心率和轴承间隙下的轴颈轴向运动对倾斜轴颈的轴承润滑性能的影响规律。结果表明:轴颈轴向运动对倾斜轴颈滑动轴承润滑特性影响显著,且影响程度与轴颈倾角和转速有直接的关系,倾角越大,对轴承润滑性能的影响越大,转速越低,对轴承润滑性能的影响越显著;轴承间隙越小,对轴承润滑性能的影响越大。Taking shaft-journal bearing systems as research object, a hydrodynamic lubrication model was established considering axial motions and misalignments of journals, and Reynolds equations were solved by finite difference method. The influences of axial motions of the journal on the lubrication performance of journal bearings were analyzed under the conditions of different journal tilt angle, rotating velocities, eccentricities, and bearing clearances. Results show that the axial motion of journal has significant influences on lubrication characteristics of misaligned journal bearings, and the tilt angle and rotating velocity of journals have direct relationship with the influence degree of axial motion of journal on the bearing performance. Bigger tilt angle of journal has greater effect of axial motion on the lubrication performance of journal bearings. Lower rotating velocity of journal has more significant influences of axial motion. Smaller bearing clearance has greater effect of axial motion.

关 键 词：轴向运动 轴颈 倾斜 径向滑动轴承 润滑 

分 类 号：TH113.3[机械工程—机械设计及理论]