Analysis on the Relationships Between the Valve Plate Geometry and the Housing Vibration of a Bent-Axis Type Hydraulic Piston Pump

사축식 유압 피스톤 펌프의 밸브 플레이트 형상과 하우징 진동간 상관관계에 대한 해석

  • 김성훈 (한국항공대학교 대학원 항공우주 및 기계공학과) ;
  • 홍예선 (한국항공대학교 항공우주 및 기계공학부)
  • Published : 2006.01.01


The vibration of hydraulic piston pumps is induced by the periodically changing cylinder chamber pressure whose waveform is significantly influenced by valve plate geometry. In this study, the force input to the housing of a bent-axis type hydraulic piston pump was computed by deriving the dynamic equations of its piston and cylinder barrel. The vibration intensity of the pump was represented by the acceleration amplitude of its housing. In order to comparatively evaluate the influence of valve plate geometry on the vibration of pump housing, two different types of valve plate were tested. The computed results showed good agreement with the experimental data, indicating that the vibration acceleration of pump housing is rather dependent on the variation amplitude of balance coefficient than the changing slope or overshoot of cylinder chamber pressure. It was also confirmed that the design effect of valve plates could be directly examined out by monitoring the vibration acceleration of pump housing.


Valve Plate;Bent-Axis Type Hydraulic Piston Pump;Vibration of Pump Housing


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