通过对具有 3惰轮的复合齿轮泵啮合点的瞬态位移分析 ,研究泵的瞬态径向液压力及瞬态啮合力的径向分力 ,得出中心轮齿数为 3的倍数时 ,中心轮与内齿轮的瞬态径向合力能完全平衡 ,且惰轮齿数为奇数时 ,其径向液压力脉动较小等结论 Through the transient displacement analysis of the meshing point of the compound gear pump with 3 idler, the radial component of the transient radial hydraulic pressure and instantaneous meshing force of the pump is studied. When the number of center gear teeth is a multiple of 3, the center Wheels and internal gear transient radial force can be completely balanced, and idler gear odd number, the smaller radial hydraulic pulsations and other conclusions