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Volume 41 Issue 3
Mar.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(3): 405-410.
MA Jiming, LI Qilin, REN Chunyu, et al. Influence factors analysis on wear of hydraulic axial piston pump/slipper pair[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(3): 405-410. doi: 10.13700/j.bh.1001-5965.2014.0204(in Chinese)
Citation: MA Jiming, LI Qilin, REN Chunyu, et al. Influence factors analysis on wear of hydraulic axial piston pump/slipper pair[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(3): 405-410. doi: 10.13700/j.bh.1001-5965.2014.0204(in Chinese)
shu

Influence factors analysis on wear of hydraulic axial piston pump/slipper pair

doi: 10.13700/j.bh.1001-5965.2014.0204
  • 1.

    Sino French Engineer School, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • 2. Jincheng Nanjing Electrical and Hydraulic Engineering Research Center, Nanjing 211140, China

  • Received Date: 15 Apr 2014
  • Publish Date: 20 Mar 2015
    Abstract
  • Wear of swash plate-slipper moving pair (slipper pair) of hydraulic axial piston pump results in increasing leakage, declining efficiency, and finally shorting the lifetime. An accelerated lifetime test method was presented based on the elasto hydrodynamic lubrication (EHL) wear model. As the most important factor effecting on wear process, oil film thickness of slipper pair was primarily analyzed. Running parameters (temperature/rotation speed/pressure) were integrated and considered when analyzing the wear, and the intrinsic factors affecting the wear process of sliding pair were revealed. An axial piston pump is selected as the study case. Firstly, under two different running conditions, wear amounts of slipper pair were analyzed and the analysis results were compared with long term test results, which verify the accuracy of analysis results of wear amounts and the feasibility of the method and mode. Then, based on the proposed method and wear analysis model, the relative relationship between medium temperature (viscosity), output pressure, rotate speed and wear ratio of slipper pair were analyzed comparatively. Finally, discussions about the accelerated means of piston pump when executing an wear accelerated lifetime test and the effects of working condition on acceleration ratio were given. Research result can be utilized to create the load spectrum of accelerated wear test of piston pump, and is also useful to do optimization for reducing wear of piston pump.

     

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