Structural optimization of the non dead center transition zone of an axial piston pump with three assignment windows

DOI:	10.11809/bqzbgcxb2023.02.013
Keywords:	axial piston pump with three assignment windows; damping holes; triangular grooves; transition zone
Abstract:	The use of an axial piston pump with three assignment windows is the most direct and effective way to realize the pump controlled single rod hydraulic cylinder system. Aiming at the problem of pressure impact and flow pulsation generated by an axial piston pump with three assignment windows in the non dead center transition zone, this paper proposes a new structure combining damping holes and triangular grooves at the valve plate of the non dead center transition zone. Considering the compressibility of the oil, the AMEsim simulation model of the axial piston pump with three assignment windows is established. By comparing different damping schemes in the non dead center transition zone, the results show that the combined structure of the damping holes and the triangular grooves reduces the outlet flow pulsation of the axial piston pump by 6%, and almost eliminates the pressure shock in the non dead center transition zone. At the same time, the simulation results show that the outlet flow and the plunger cavity pressure of the axial piston pump are optimal when the damping hole size is 0.5 mm.
Published:	2023-02-28
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