双作用叶片泵叶片圆弧顶廓研究  

Study on the vane arc top profile of the double acting vane pump

作　　者：翟建华[1,2] 李艺凡 李键[3] 魏晓华 

机构地区：[1]辽宁工程技术大学机械工程学院,阜新123000 [2]辽宁工程技术大学先进制造技术研究院,阜新123000 [3]阳泉(煤业)集团有限公司三矿,阳泉045001

出　　处：《应用力学学报》2018年第3期597-601,共5页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(51304107)

摘　　要：以高压双作用叶片泵为研究对象,探讨了叶片顶部轮廓对接触应力和动压油膜的影响规律,研究了圆弧顶廓的接触问题。用matlab软件计算了不同顶廓半径对接触压力角的影响规律。基于Hertz弹性接触理论推导了吸油区接触应力的计算公式,建立了过渡曲线段速度的分析模型。基于弹流润滑理论分析了叶顶与定子内表面润滑油膜厚度的计算方法,得出圆弧顶廓润滑状况以及摩擦、磨损状况都优于尖顶轮廓的结论。从而为高性能叶片顶部轮廓的优化设计奠定了良好基础。This study focuses on the high pressure double acting vane pump. The effects of the vane top profile on the contact stress and hydrodynamic oil film are explored. The feature of the contact between the vane top and the cam ring of the pump is also examined. The influence of the different crown radius on the contact pressure angle is calculated by MATLAB software. Based on the Hertz Elastic Contact Theory, formulas for calculating the contact stress in pump suction area are derived. In addition, an analytical model for the velocity of the vane transitional section is set up. The method for calculating the oil film thickness between the vane top and the inner surface of the stator is discussed based on Elastohydrodynamic Lubrication Theory, reaching a conclusion that the top of the arc profile is better than spire profile in the condition of lubrication, friction and wear, which can be used to optimize the vane top profile design of a vane pump.

关 键 词：叶片泵 顶部轮廓 弹流润滑 接触应力 油膜 

分 类 号：TH137.51[机械工程—机械制造及自动化]