穿山甲鳞片型织构柱塞副减摩和泄漏特性分析  

Analysis of Friction Reducing and Leakage Characteristics ofPlunger Pair with Pangolin Scale Texture

作　　者：郭蒙宪 郭勇[2] 陈嘉鑫 GUO Mengxian;GUO Yong;CHEN Jiaxin(School of Mechanical Engineering,Hunan University of Science and Technology,Xiangtan Hunan 411100,China;Engineering Research Centre of Advanced Mining Equipment Ministry of Education,Hunan University of Science and Technology,Xiangtan Hunan 411100,China)

机构地区：[1]湖南科技大学机电工程学院,湖南湘潭411100 [2]湖南科技大学教育部先进矿山装备工程研究中心,湖南湘潭411100

出　　处：《润滑与密封》2024年第7期74-81,共8页Lubrication Engineering

基　　金：国家自然科学基金项目(51705147,51809091,51779092);湖南省自然科学基金项目(2018JJ3182);湖南省教育厅重点项目(23A0376)。

摘　　要：针对内曲线径向马达柱塞副的磨损和泄漏制约液电能量回收系统效率的问题,提出在柱塞结构表面仿穿山甲鳞片型织构以减小摩擦和泄漏的方法。采用双抛物线平移的方法表征出穿山甲鳞片型织构的数学模型,结合雷诺方程建立油膜承载力和摩擦因数仿真模型,对比分析无织构柱塞和织构柱塞的油膜压力、摩擦因数和柱塞副间隙泄漏随织构面积率的变化关系。结果表明:织构柱塞比无织构柱塞的油膜压力高出10%~35%,且具有更高的承载力和更低的摩擦因数;织构柱塞副比无织构柱塞副间隙的泄漏量减少了13.8%~27.8%,表明织构对柱塞副的密封性能有一定的提升作用。仿穿山甲鳞片型柱塞织构结构对提升液压马达液电能量回收系统的效率有显著效果。In order to solve the problem that the wear and leakage of the plunger pair of the inner curve radial motor restrict the efficiency of the hydraulic-electric energy recovery system,a method to simulate the pangolin scale texture on the surface of the plunger structure to reduce friction and leakage.The mathematical model of pangolin scale texture was characterized by double parabola translation method,and the simulation model of oil film bearing capacity and friction coefficient was established based on Reynolds equation.The oil film pressure and friction coefficient of non-textured and textured plungers were compared,and the relationship between gap leakage of plunger pair and texture area ratio was analyzed.The results show that the textured plunger has higher bearing capacity and lower friction coefficient,and its oil film pressure is 10%to 35%higher than that of the non-textured plunger.Compared with the non-textured plunger pair,the leakage of the textured plunger pair is reduced by 13.8%to 27.8%,indicating that the texture has a certain improvement effect on the sealing performance of the plunger pair.Pangolin scale texture plunger structure hydraulic motor has a significant effect on improving the efficiency of hydro-electric energy recovery system.

关 键 词：内曲线径向柱塞马达 织构 柱塞摩擦副 减摩特性 

分 类 号：TH117[机械工程—机械设计及理论]