柱塞泵滑靴副润滑特性分析  

Analysis on Lubrication Characteristics of Piston Pumps Slipper Pair

作　　者：王官洪 周钊强 曹学鹏[1] 

机构地区：[1]长安大学工程机械学院,陕西西安710064

出　　处：《装备制造技术》2017年第12期34-35,38,共3页Equipment Manufacturing Technology

基　　金：国家自然科学基金项目(51509006);国家高技术研究发展计划(863计划)项目(2012AA091104);陕西省自然科学基金项目(2017JQ5081)

摘　　要：滑靴副的润滑特性直接影响柱塞泵的效率和使用寿命,油膜厚度和承载力是衡量其润滑特性的重要指标,为此开展柱塞泵滑靴副的润滑特性研究。基于油室压力反馈模型,求得最佳油膜厚度,计算滑靴密封带处油膜压力分布;再通过建立滑靴副流道模型,进行流体仿真验证压力计算数值模型。通过数值计算和流体仿真得出结论:密封带处油膜压力呈环形分布,且随半径的增大逐渐减小,当负载压力增大时,密封带处压力也随之增大,油膜承载力提高。理论模型和数值分析揭示了轴向柱塞泵滑靴副油膜承载能力的变化规律,为液压源的设计和开发打下理论支撑基础。Lubrication characteristics of slipper directly affect the efficiency and service life of piston pump,oilfilm thickness and bearing capacity is one of important indicators to measure the lubrication characteristics,therefore,carrying out research of slipper lubrication characteristics. Based on feedback model of oil chamber pressure,optimal oil-film thickness was obtained,and the pressure distribution of oil-film was calculated. In this paper,a numerical model of pressure simulation is carried out to verify the rationality and accuracy of the pressure fluid simulation. Through numerical computation and fluid simulation,concluded that seal belt on the oil film pressure distribution is circular,and along with the increase of the radius decreases,when the load pressure,sealing with pressure also increase,the oil film bearing capacity increase. Theoretical model and numerical analysis reveal the variation law of oil bearing capacity of slipper in axial piston pump,and lay a theoretical foundation for the design and development of hydraulic source.

关 键 词：油膜厚度 油膜承载力 最佳油膜厚度 

分 类 号：TH322[机械工程—机械制造及自动化]