Research on Characteristics of Non-Dead Point Transition Zone of Asymmetric Axial Piston Pump
The Axial piston pump with three distribution windows effectively solves the mismatch problem caused by the different flow rates in the two chambers of the pump-controlled single rod hydraulic cylinder.However,there are flow pulsation and pres-sure shock problems in the non-dead point transition zone of the axial piston pump with three distribution windows.In view of this problem,it is proposed to set up damping holes in the non-dead point transition zone and the upper dead point transition zone.The two damping holes are connected through the channels to balance the pressure of the non-dead point transition zone and the upper dead point transition zone.According to the flow distribution area function,the piston pump model is built in AMEsim soft-ware to simulate the influence of parameters such as the existence of damping holes and the size and location of damping holes on the flow and pressure of the piston pump,and to determine the appropriate flow distribution plate structure.The results show that the opening of the damping hole oil channel can reduce the pressure gradient in the transition zone,reduce the pressure shock and flow pulsation of the piston pump in the transition zone,reduce the energy consumption of leakage and oil compression,and im-prove the volumetric efficiency.
Axial Piston Pump with Three Distribution WindowsDamping GrooveDistribution PlateNon-deadpoint Transition ZoneFlow PulsationPressure Impact
万方数据
维普
