China Mechanical Engineering ›› 2022, Vol. 33 ›› Issue (20): 2420-2428,2436.DOI: 10.3969/j.issn.1004-132X.2022.20.004

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Modeling and Experimental Validation of Lubrication Characteristics of Spherical Valve-plate Pairs with Conical Cylinder Block

YE Shaogan1,2;LAI Weiqun1;HOU Liang1;BU Xiangjian1   

  1. 1.Department of Mechanical and Electrical Engineering,Xiamen University,Xiamen,Fujian,361002
    2.State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou,310027
  • Online:2022-10-25 Published:2022-11-15

锥形缸体球面配流副润滑特性建模及试验验证

叶绍干1,2;赖伟群1;侯亮1;卜祥建1   

  1. 1.厦门大学机电工程系,厦门,361002
    2.浙江大学流体动力与机电系统国家重点实验室,杭州,310027
  • 通讯作者: 侯亮(通信作者),男,1974年生,教授、博士研究生导师。研究方向为产品大批量定制技术、振动噪声控制以及工业大数据等。E-mail:hliang@xmu.edu.cn。
  • 作者简介:叶绍干,男,1989年生,副研究员。研究方向为液压元件振动控制及可靠性设计。E-mail:shaoganye@xmu.edu.cn。
  • 基金资助:
    国家重点研发计划(2018YFB2001101,2019YFB2005101);国家自然科学基金(52175062);流体动力与机电系统国家重点实验室开放基金(GZKF-201903,GZKF-202013)

Abstract: The lubrication characteristics of oil film of valve-plate pairs were of great significance for reliable operations of axial piston pumps. A simulation model was developed for oil film lubrication characteristics of spherical valve-plate pairs with conical cylinder block, and the effectiveness of the model was validated using experimental tests. First, the forces acting on conical cylinder blocks were analyzed, and the forces acting on cylinder blocks generated by piston-slipper assemblies were obtained by analyzing the kinematics and dynamics of piston-slipper assemblies. Second, the oil film carrying forces were obtained by analyzing the thickness and pressure distributions of oil films in spherical valve-plate pairs. Third, the oil films were discretized using finite volume method, and the oil film lubrication characteristics of spherical valve-plate pairs and the equation of motion of conical cylinder blocks were numerically solved using Newton iterative method. Last, the high-pressure steady-state tests and the surface profile scanning tests were performed, the morphologies of spherical valve plates with different steady-state test durations were obtained, the spherical valve-plate wear profile and the simulated oil film thickness and pressure distributions were compared. Results show that the simulated thick oil film area is in consistence with spherical valve-plate main wear areas, indicating that the oil film lubrication model of spherical valve-plate pairs with conical cylinder block is effective. 

Key words: axial piston pump, conical cylinder block, spherical valve-plate pair, lubrication characteristic

摘要: 配流副油膜的润滑特性对轴向柱塞泵的可靠运行有重要影响。建立了锥形缸体球面配流副油膜润滑特性仿真模型,并通过试验验证了模型的有效性。对锥形缸体进行受力分析,通过对柱塞滑靴组件运动学和受力的分析,求解得到柱塞滑靴组件对锥形缸体的作用力;通过对球面配流副油膜厚度分布和压力分布的分析,求解得到球面配流副对锥形缸体的油膜支承力;采用有限容积法对油膜进行离散化处理,通过牛顿迭代法数值求解球面配流副油膜润滑特性和锥形缸体运动方程;开展轴向柱塞泵高压稳态试验和轮廓扫描试验,获得不同稳态试验时长的球面配流盘磨损形貌,对比球面配流盘磨损轮廓与仿真得到的油膜厚度分布和压力分布。研究结果表明,仿真得到的油膜厚度较小区域与配流盘主要磨损区域相近,验证了锥形缸体球面配流副油膜润滑模型的有效性。

关键词: 轴向柱塞泵, 锥形缸体, 球面配流副, 润滑特性

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