三惰轮复合齿轮泵密封块瞬态径向力分析  

Analysis of Radial Forces on the Seal Block in a Compound Gear Pump with 3 Idle Gears

作　　者：赵连春[1] 许贤良[1] 孙长敬[1] 

机构地区：[1]淮南工业学院,淮南232001

出　　处：《重庆大学学报（自然科学版）》2001年第6期45-47,共3页Journal of Chongqing University

基　　金：国家自然科学基金资助项目 ( 5 95 75 0 10 );浙江大学流体传动与控制国家重点实验室开放基金资助项目

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 。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.

关 键 词：复合齿轮泵 密封块 液压合力 惰轮 齿轮 齿顶圆 瞬态径向力 

分 类 号：TH325[机械工程—机械制造及自动化]