东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (9): 1327-1331.DOI: 10.3969/j.issn.1005-3026.2015.09.024

• 机械工程 • 上一篇    下一篇

齿轮泵主从动齿轮腔压力分布的非对称性分析

刘巍， 王安麟， 单学文， 张小路   

  1. (同济大学 机械与能源工程学院， 上海201804)
  • 收稿日期:2014-01-16 修回日期:2014-01-16 出版日期:2015-09-15 发布日期:2015-09-14
  • 通讯作者: 刘巍
  • 作者简介:刘巍(1983-)，男，山东兖州人，同济大学博士研究生； 王安麟(1954-)，男，陕西安康人，同济大学教授，博士生导师.
  • 基金资助:
    工业和信息化部2011年科技成果转化项目—工程机械用高压柱塞泵及液压马达传动装置产业化子项目(财办建［2011］30号).

Asymmetric Analysis of Pressure Distribution in the Gear Pump’s Master-Slave Gear Cavity

LIU Wei， WANG An-lin， SHAN Xue-wen， ZHANG Xiao-lu   

  1. School of Mechanical Engineering， Tongji University， Shanghai 201804， China.
  • Received:2014-01-16 Revised:2014-01-16 Online:2015-09-15 Published:2015-09-14
  • Contact: LIU Wei
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摘要： 在解析齿轮泵工作腔流场分布特点的基础上，主要研究了主从动齿轮腔压力分布非对称现象.以某型号高压齿轮泵为研究对象，通过分析齿轮轴挠度与径向间隙的关系和建立过渡区压力非线性微分方程，对比相应位置的压力值得出主从动齿轮腔压力非对称分布的结论.试验数据表明:额定工况下试验数值与理论值误差小于5.0%，过渡区压力相差4.17MPa，高压槽末端压力相差1.55MPa.该研究为高压齿轮泵工作腔压力分布非对称解析及侧板倾覆力矩计算提供了理论基础.

关键词: 齿轮泵, 齿轮轴, 非对称, 侧板, 倾覆力矩

Abstract: Based on the distribution features of a gear pump’s flow field， the asymmetric pressure distribution in the master-slave gear cavity was analyzed. Taking a certain type high-pressure gear pump as the research object， the relationship between the radial clearance and the deflection of gear shaft was analyzed. The nonlinear differential equation of pressure in the transition zone was established. Comparing the corresponding position pressures of both master and slave gear side cavities， it could be concluded that the pressure distribution of a gear pump’s master-slave gear cavity is asymmetric. The experimental data showed that the corresponding point pressure value between the experimental and theoretical error is less than 5.0%. The master and slave pressure difference is 4.17MPa in the transition zone， and the pressure difference is 1.55MPa at the end of high-pressure groove under the rated conditions. This study provides a theoretical basis on the asymmetric analysis of pressure distribution in the high-pressure gear pump’s gear cavity and on the calculation of floating end plates’ overturning torque.

Key words: gear pump, gear shaft, asymmetry, end plate, overturning torque

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