Tribology and Lubricants

Korean Tribology Society (한국트라이볼로지학회)
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Characteristics of Lubrication between Slipper and Swashplate in Swashplate Type Hydraulic Piston Pump

사판식 유압 피스톤 펌프의 슬리퍼와 사판 간의 윤활 특성

  • Cho, Ihnsung (Division of Mechanical System Engineering, Chonbuk National University)
  • 조인성 (전북대학교 기계시스템공학부)
  • Received : 2013.01.28
  • Accepted : 2013.04.10
  • Published : 2013.06.30
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Abstract

Hydraulic systems are used to transform mechanical energy into fluid energy and vice versa. They are widely applied in various industries; e.g., they are used in automobiles, public works, rockets, machine tools, heavy construction equipment, and airplanes. Hydraulic pumps are used to transform the energy in these systems. In this study, with the basic operation principles as a starting point, I attempted to clarify how the shape of a slipper affects the lubrication characteristics under practical conditions. A swashplate with a tilt angle of zero and capable of rotating motion was used, along with other devices. A slipper was located at 45 mm eccentricity from the center of the swashplate. The results of this experiment indicated that the shape of the bottom surface of a slipper affects the load capacity, leakage flow, and lubrication characteristics and that the slipper is one of the most important parts for improving the pump efficiency.

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References

  1. J. Y. Jung and I. S. Cho, "The Tribology of Core Oil Hydraulic Pumps", Journal of the KSFC, Vol. 10, No. 1, pp.38-45, 2013. https://doi.org/10.7839/ksfc.2013.10.1.038
  2. S. C. Sharma, S. C. Jain and D. K. Bharuka, "Influence of Recess Shape on the Performance of a Capillary Compensated Circular Thrust Pad Hydrostatic Bearing", Tribology International, Vol. 35, pp. 347- 356, 2002. https://doi.org/10.1016/S0301-679X(02)00013-0
  3. E. Koc and C. J. Hooke, "Considerations in the Design of Partially Hydrostatic Slipper Bearings", Tribology International, Vol.30, No.11, pp.815-823, 1977.
  4. I. S. Cho, "Theoretical Analysis of the Slipper Hydrostatic Bearing Shape in the Swash Plate Type Axial Piston Pump", Journal of the KSFC, Vol. 10, No. 1, pp.14-20, 2013. https://doi.org/10.7839/ksfc.2013.10.1.014
  5. T. J. Park and J. C. Yoo, "Flow Analysis in a Slipper Bearing for Swash Plate Type Axial Piston Pump", Journal of the KSTLE, Vol.24, No.6, pp.343-348, 2008.
  6. N. Iboshi and A. Yamaguchi, "Characteristics of a Slipper Bearing for Swash Plate Type Axial Piston Pumps and Motors(2nd Report, Experiment), Bulletin of the JSME, Vol.26, No.219, pp.1583-1589, 1983. https://doi.org/10.1299/jsme1958.26.1583
  7. J. Y. Jung, I. H. Baek, I. S. Cho, K. K. Song, S. H. Oh and S. H. Jung, "A Study on Lubrication Characteristic of Slipper Hydrostatic Bearing in Hydraulic Piston Pump", Transactions of the KFPS, Vol.4, No.3, pp.1-6, 2007.
  8. D. H. Jang, S. K. Lee, J. H. Kwon and S. H. Park, "A Study on Pressure, Flow Fluctuation and Noise in the Cylinder of Swash Plate Type Axial Piston Pump", Transactions of the KFPS, Vol.6, No.3, pp.1- 9, 2009.