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文章编号： 1672-6987（2020）03-0080-007； DOI： 10.16351/j.1672-6987.2020.03.011
邱世凯， 李松梅*
(青岛科技大学 机电工程学院，山东 青岛 266061)
摘要： 为了控制滚珠轴承与滑块之间的点摩擦，提高三叉杆滑块式万向联轴器在汽车传动轴系统的工作效率，因此研究三叉杆滑块式万向联轴器在润滑脂情况下的润滑特性。本研究以弹流润滑点接触理论为基础，采用多重网格法对Ostwald方程进行量纲一化，得出量纲一化后的Reynolds方程，然后对Reynolds方程进行差分处理，得出差分处理后的润滑脂油膜厚度公式和载荷公式。研究结果表明：三叉杆滑块式万向联轴器的润滑特性与输入轴频率、载荷、输入输出轴夹角、滚珠半径和压黏系数有关，润滑脂的膜厚和压力随着输入轴频率、输入输出轴夹角和滚珠半径的增大而减小，而随着载荷和压黏系数的增大而增大。本研究为三叉杆滑块式万向联轴器在汽车传动轴系统应用时控制摩擦磨损提供理论依据和技术支持。
关键词： 三叉杆万向联轴器； 润滑特性； Reynolds方程； 压黏系数
中图分类号： TH 132文献标志码： A
引用格式： 邱世凯， 李松梅. 三叉杆万向联轴器的点接触润滑特性分析\[J\]. 青岛科技大学学报（自然科学版）， 2020， 41（3）： 80-86.
QIU Shikai, LI Songmei. Analysis of point contact lubrication characteristics of tripod universal joint\[J\]. Journal of Qingdao University of Science and Technology（Natural Science Edition), 2020， 41（3）： 80-86.
Analysis of Point Contact Lubrication Characteristics of Tripod Universal Joint
QIU Shikai, LI Songmei
(College of Electromechanical Engineering, Qingdao University of Science and Technology， Qingdao 266061, China)
Abstract: To control the point friction between the ball bearing and the slider and improve the working efficiency of the tripod sliding universal joint in the automobile transmission shaft system, the lubrication performance of the tripod sliding universal joint in the case of using grease was studied. Based on the theory of elastohydrodynamic lubrication point contact, the multigrid method was used to dimension the Ostwald equation to obtain the dimensional Reynolds equation. The Reynolds equation was differentially processed to obtain the grease oil film thickness formula and load formula after differential. The lubrication characteristics of the tripod sliding universal joint were related to the input shaft frequency, the load, the angle between the input and output shafts, the radius of the ball and the coefficient of viscosity. The film thickness and pressure of the grease decrease with the increase of the input shaft frequency, the angle between the input and output shafts and the radius of the ball, and increase with the increase of the load and the coefficient of viscosity. This paper provides a theoretical basis and technical support for the control of friction and wear of the tripod sliding universal joint in the application of automotive transmission shaft system.
Key words: tripod sliding universal joint; lubrication characteristics; Reynolds equation; coefficient of viscosity
收稿日期： 2019-04-07
基金项目： 山东省科技发展计划项目(2018JMRH0508)；青岛市创新源头科技项目(18-2-2-21-jch).
作者简介： 邱世凯(1996—),男，硕士研究生.*通信联系人.
