Journal of South China University of Technology(Natural Science Edition) ›› 2021, Vol. 49 ›› Issue (2): 99-109,139.doi: 10.12141/j.issn.1000-565X.200636

Special Issue: 2021年流体动力与机电控制工程

• Fluid Power & Electromechanical Control Engineering • Previous Articles     Next Articles

Modeling and Analysis of Oil Film Lubrication Characteristics of Valve-Plate Pair in Axial Piston Motor

HOU Liang1 LAI Weiqun1 CUI Kai2 YE Shaogan1 GUO Zhimin2 BU Xiangjian1   

  1. 1． Department of Mechanical and Electrical Engineering，Xiamen University，Xiamen 361021，Fujian，China; 2． Linde Hydraulics ( China) Co． ，Ltd． ，Weifang 261061，Shandong，China
  • Received:2020-10-23 Revised:2021-01-07 Online:2021-02-25 Published:2021-02-01
  • Contact: 叶绍干 ( 1989-) ，男，博士，副研究员，主要从事重大装备电液伺服控制、液压元件动力学及振动控制相关 研究。 E-mail:shaoganye@xmu.edu.cn
  • About author:侯亮 ( 1974-) ，男，博士，教授，主要从事产品大批量定制技术、振动噪声控制以及工业大数据等相关研究。E-mail: hliang@xmu.edu.cn
  • Supported by:
    Supported by the National Key Ｒ＆D Program of China ( 2018YFB2001101，2019YFB2005101) and the Open Foundation of the State Key Laboratory of Fluid Power and Mechatronic Systems ( GZKF-201903，GZKF-202013)

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Abstract: The working performance and stability of the axial piston motor are significantly affected by the frictional lubrication characteristics of the valve-plate pair． Considering the oil film pressure distribution and moment action of the auxiliary support belt with surface veins，this study established the oil film dynamic model of the valve-plate pair，and analyzed the change rules of the flow leakage and friction loss of the valve-plate pair under different working pressure，working speed and swash plate angle． The research results show that the leakage flow of the valveplate pair of the axial piston motor increases approximately linearly with the increase of speed，and the increase rate decreases with the increase of pressure． At the same time，the viscous-friction torque of oil film increases with the increase of the rotational speed and pressure，and there is an approximate linear relationship between the friction torque and the rotating speed． The leakage flow and the thickness of the central film decrease with the increase of the inclined angle of the swash plate，while the friction torque increases with the increase of the inclined angle．

Key words: axial piston motor, valve-plate pair, leakage flow, friction torque

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