毛华永； 王大鹏； 逄学艳； 郭彬； 郝胜兵； 鲁国江   

山东大学能源与动力工程学院； 中国人民解放军92323部队；

 河北安吉宏业机械股份有限公司；

【摘要】 分析了重迭系数对渐开线直齿圆柱齿轮泵困油现象的影响;讨论了设置卸荷槽削弱困油现象的原则,及卸荷槽对油液流量和容积效率的贡献;提出了为保证较高的容积效率,对于粘度不高的油液,可在困油压力能够接受的情况下使节点两侧卸荷槽间距略大一些;在对压力脉动要求不高的场合应尽量减少齿轮齿数。 

【关键词】 渐开线齿轮泵； 重迭系数； 困油现象； 卸荷槽； 容积效率； 

【Abstract】 This paper analyzes the effect of the overlap coefficient on entrap phenomenon of involute spur gear pump and then discusses the setting principle of unload groove to weaken entrap phenomenon,the contribution of unload groove to oil flow rate and volumetric efficiency.In order to ensure a higher volumetric efficiency,it is proposed that the distance between unload grooves for low viscosity oil is slightly larger in the situation of acceptable pocketed oil pressure and the tooth number of gear sh... 

【Key words】 Involute Gear Pump； Overlap Coefficient； Entrap Phenomenon； Unload Groove； Volumetric Efficiency；