By analyzing the pressure distribution between gears and sealing blocks in compound gear pump with three idlers,the resultant hydraulic forces acting on seal blocks are obtained.

• 通过对具有3个惰轮的定轴轮系复合齿轮泵各齿轮齿顶圆与密封块间的压力分布规律的分析,求出各齿轮与密封块间的液压油对密封块产生的液压力合力。