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양방향 구동 사판식 액시얼 피스톤 펌프의 밸브 플레이트 노치 설계에 관한 연구
최세령(Sae Ryung Choi),이일영(Ill Yeong Lee),한성민(Sung Min Han),신정우(Jung Woo Shin) 유공압건설기계학회 2016 드라이브·컨트롤 Vol.13 No.3
Flow and pressure ripple in swash plate type piston pumps is largely dependent on the design of notches(silencing grooves) in the valve plate. In uni-directional pumps, the basic design concept for notches in the valve plate could be said to be established. It is easily deduced that the design concept for notches in uni-directional pumps can not be simply applied to bi-directional pumps requested for EHA(electric hydrostatic actuators). To carry out systematic research on technological issues regarding notch applications to bi-directional piston pumps, five notch designs are devised. The effects of the notch designs on the characteristics of the pump are investigated by numerical simulations and experiments. Through this study, basic concepts about notch design for bi-directional piston pumps are suggested.
SimulationX<SUP>Ⓡ</SUP>를 이용한 가변 사판식 액셜 피스톤 펌프의 밸브플레이트 노치 최적화에 관한 연구
이산성(San Seong Lee),정원지(Won Jee Chung),임동재(Dong Jae Lim),차태형(Tae Hyung Cha),김수태(Soo Tae Kim),이정실(Jeong Sil Lee),최경신(Kyung Shin Choi) 한국기계가공학회 2018 한국기계가공학회지 Vol.17 No.4
Considering the shape of a valve plate in design is important for reducing the pulsation phenomenon, which is a negative factor in pump performance. The purpose of this study is to propose an optimized method for a valve-plate V-type notch of a piston pump by modeling and simulation. The method uses SimulationX<SUP>Ⓡ</SUP>, a commercial hydraulic analysis program, and to provide data for the designing of the notch. The opening areas are determined by performing kinematic analysis of the notch part where the opening area changes rapidly. After applying the result analysis, the main effects on maximum pressure pulsation and maximum backflow according to the notch design factors are analyzed by using the full factorial method of experimental design. The optimized solutions are derived for the notch design variables, based on the analyzed data.
굴삭기용 선회 모터의 가속시 소음 진동 개선을 위한 밸브 플레이트의 설계에 관한 연구
이승현(S. H. Lee),진정만(J. M. Jin),소순재(S. J. So) 유공압건설기계학회 2016 유공압건설기계학회 학술대회논문집 Vol.2016 No.11
Flow and pressure ripple in swash plate type piston motors is largely dependent on the design of notches. The basic design concept for notches in the valve plate could be said to be established for the general solution of flow and pressure ripple In this paper, it was lead theoretical formular to identify the major parameters caused the vibration and noise in the time of accelerating operation for swing motor and proposed the method of solution by return hole in notch of valve plate. also the effect for design of return hole in notch is prooved through the bench test considered inertio load according to excavator operating condition.
사판식 피스톤형 유압펌프에서의 실린더내 압력, 맥동, 소음에 관한 실험적 연구
장동혁,이상규,박성환,권정호 사단법인 유공압건설기계학회 2009 드라이브·컨트롤 Vol.6 No.3
Noise reduction for hydraulic pump is strongly demanded in the market with its efficiency and durability. In order to meet this demand, it is necessary to reveal mechanism for noise and relationship between the important factors. In this paper, mathematical model for cylinder pressure which is primary reason of pulsation and sound noise were established, and examined its pressure profile by simulation. Also, the valve plate of three kind types are manufactured and tested for piston pressure, pressure pulsation, and sound power level based on the tentative standard which is officially recognized.