新型变量径向柱塞泵配流轴模态分析

Modal Analysis of the Flow Distribution Shaft of New-type Radial Piston Variable Displacement Pump

机械振动与流体振动是径向柱塞泵中两种常见的振动类型。配流轴及变量机构的振动、由转子偏心与不平衡所产生的振动都为机械振动;由径向柱塞泵的压力冲击和固有流量脉动所引起的振动则为流体振动。对各激振源及其激振频率进行了详细介绍,并分析了其对径向柱塞泵的性能影响。

In general, mechanical vibration and fluid vibration of radial piston pump are the vibration of two common types. The vibration of the flow distribution shaft and variable mechanism, the vibration resulted by the rotor eccen-tricity and unbalanced are all mechanical vibration. But the vibration caused by pressure shock and the intrinsic flow pulsation is vibration of fluid. This paper focuses on the vibration source and vibration frequency in detail, and ana-lyzes its effect on the radial piston pump.