直线-共轭内啮合齿轮泵的设计方法.pdfVIP

第26卷第1期 排 灌 机 械 V01．26 NO．1 2008年1月 DrMnage and Irrigation Machinery Jan．2008 直线一共轭内啮合齿轮泵的设计方法 丛小青 ，刘梦仙 ，乌 骏 (1．江苏大学能源与动力工程学院，江苏镇江212013；2．江苏大学流体机械工程技术研究中心，江苏镇江212013) 摘 要：以直线一共轭内啮合齿轮副为研究对象，对直线一共轭内啮合齿轮副的啮合特性进行了系 统研究，得到了直线一共轭内啮合齿轮泵转子的较完整的设计方法．介绍了这种泵的工作原理，并综 合齿轮及齿轮泵的设计计算方法，分析了直线一共轭内啮合齿形的基本参数和计算公式，给出了基本 参数的选取和计算方法，推导了流量计算方程；利用平面啮合定理(Willis定理)和齿廓设计基本方 法，分别得到了内、外齿轮的齿廓曲线方程．通过实例，求得其基本参数及齿廓曲线方程，并绘制出直 线一共轭齿轮泵转子的图形，验证了基本参数和计算公式的合理性及齿廓曲线方程的正确性． 关键词：齿轮泵；直线一共轭；内啮合；参数；齿廓曲线方程；设计方法 中图分类号：TH31l 文献标志码：A 文章编号：1005—6254(2008)01—0033—04 Design method of straight-conjugate internal gear pump CONG xi∞一qingl nU Meng—xian2 WU Janl ， ． (1．School of Energy and Power Engineering，Jiangsu University，Zhenjiang，Jiangsu 212013，China；2．Technical and Research Center of Fluid Machinery Engineering，Jiangsu University，Zhenjiang，Jiangsu 212013，China) Abstract：The straight conjugate intemal gear pairs were studied，their meshing characteristics were ana— lyzed and an integrated design method of their rotors was obtained．The selection and calculation of basic parameters were introduced，and the basic parameters and formulas were analyzed．The flow calculation e— quations were derived by integrating the gear pump design method with the working principle．The tooth profile equations were obtained according to the Willis theorem and the basic method of tooth profile de— sign．Using an actual design example，the basic parameters and tooth profile equations were obtained the ， rotor graphs were plotted，and the rationality and the validity of equations were verified．