【摘要】 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。由分析结果可知 ,3惰轮复合齿轮泵中 ,作用于密封块上不平衡的液压合力较小 ,由于复合齿轮泵的内啮合密封较长 ,密封效果较好 ,而外啮合密封线较短 ,其密封性能较差 ,因此 ,少量的不平衡液压合力将密封块压向中心轮的排油腔 ,从而得出较小的不平衡液压合力有利于改善复合齿轮泵的密封效果等结论更多还原

【Abstract】 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.The conclusion is the unbalanced resultant hydraulic forces are relatively small in magnitude.In the pump,the inner sealing edges are long and so it s Sealing effect is good,but the outer sealing effect is relatively poor because of its short sealing edges.The little unbalanced force pushes the sealing block to te pumping chamber,therefore it is advantageous to meliorating the pump’s sealing effect,thereby to improving it’s volumetric efficiency as well.更多还原