Modelling of the Micro Lubricating Gap Geometry Between Valve Plate and Cylinder Block in an Axial Piston Pump

Authors

  • Zhiqiang Zhang School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China, Shanxi Key Laboratory of Metallic Materials Forming Theory and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China https://orcid.org/0000-0002-3622-6429
  • Haitao Yuan School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China
  • Jianli Song School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China, State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China
  • Haibo Zhou State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China

DOI:

https://doi.org/10.13052/ijfp1439-9776.2123

Keywords:

Axial piston pump, valve plate, wedge angle, azimuth angle, gap thickness

Abstract

The paper focuses on the effect of force and torque balance (FTB) of cylinder block, coaxiality error (CE) between main shaft and cylinder block, and other factors, especially eccentric wear (OTEW) of valve plate on wedge angle of the micro lubricating gap between valve plate and cylinder block, and a novel trigonometric function model of the gap geometry and mechanical balance equations of cylinder block are proposed. The three eddy current displacement sensors are used to measure the gap thickness. The results show that, the theoretical wedge angle due to FTB is nearly 1.2E-4, the test wedge angle owing to CE 1.65E-4~4.3E-4, the wedge angle by OTEW about 1.35E-3, therefore, CE and OTEW have a larger impact on the wedge angle. The test results demonstrate the total wedge angle obviously increases with the enlargement of swash plate angle but slightly rises with the increasing working pressure.

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Author Biographies

Zhiqiang Zhang, School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China, Shanxi Key Laboratory of Metallic Materials Forming Theory and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China

Zhiqiang Zhang Born on July 1982 in Weifang (China). PhD. in Material Processing Engineering from Taiyuan University of Science and Technology, Taiyuan, China, 2014. Associate professor of School of Mechanical Engineering, Taiyuan University of Science and Technology. Research interests include modelling and numerical simulation of hydraulic pumps, valves and circuit systems.

Haitao Yuan, School of Mechanical Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China

Haitao Yuan Born on December 1995 in Xianyang (China). Bachelor in School of Mechanical Engineering from Taiyuan University of Science and Technology, Taiyuan, China, 2018. Postgradute of School of Mechanical Engineering, Taiyuan University of Science and Technology. Research interests include modelling and numerical simulation of hydraulic pumps.

Jianli Song, School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing 100192, China, State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China

JianLi Song Born on October 1969 in Shanxi (China). Ph.D. in the School of Mechanical Engineering from Shanghai Jiao Tong University, ShangHai, China, 2006. Professor of the School of Instrument Science and Opto-Electronics Engineering, Beijing Information Science and Technology University, Beijing, China. Doctoral supervisor of Taiyuan University of Science and Technology, TaiYuan, China. Research interests mainly include advanced manufacturing technology.

Haibo Zhou, State Key Laboratory of High Performance Complex Manufacturing, Central South University, Changsha 410083, China

Haibo Zhou Born on 1981 in China. Ph.D. in mechanical and electrical engineering from Central South University, Changsha, China, 2010. Professor of the School of Mechanical and Electrical Engineering, Central South University. Visiting Ph.D. student in Wayne State University, Detroit, USA, 2007–2008. Research interests include theory and application of fuzzy intelligent control, ultra-precision motion design. Member of the IEEE Computational Intelligence Society.

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Published

2020-11-29

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Section

Original Article