介绍了柱塞泵 (马达 )配流型式的发展 ,对水压轴向柱塞泵 (马达 )力矩全平衡型配流盘进行了分析。通过数字仿真研究了配流盘结构对柱塞腔内压力的影响 ,发现减振槽及其过流面积对气蚀的产生有直接的作用 ,合适的吸入口压力或背压可减小泵或马达发生气蚀的可能性 This paper introduces the development of the distribution pattern of the plunger pump (motor), and analyzes the full balanced torque distribution plate of the hydraulic axial piston pump (motor). Through the numerical simulation, the effect of the structure of the distribution plate on the pressure in the plunger cavity was studied. It was found that the vibration damping groove and its over-flow area have a direct effect on the cavitation. The proper suction pressure or backpressure can reduce the pump or motor The possibility of cavitation