一种新型弦线转子泵

发布时间：2018-05-07 13:11

本文选题：弦线转子泵 + 滚子隔离　；参考：《液压与气动》2017年10期

【摘要】：根据弦线转子副理论齿廓不满足互为共轭条件,但可始终在连心线上保持接触的特点,提出用理论齿廓的等距曲线作为实际齿廓,即采用滚子隔离的新型弦线转子泵,保证了每一瞬时只有一对轮齿接触,从根本上消除困油现象,而且使接触面之间的摩擦由滑动摩擦变为滚动摩擦,大大减小了摩擦力。推导出理论瞬时流量近似计算公式,同时利用"数形结合"的方法,说明该新型弦线转子泵瞬时流量近似恒定。通过分析液压力和转子啮合对弦线转子产生的径向力,并结合径向力的合成,得出可以通过选择合理的转子宽度和齿顶圆直径、缩小压油腔尺寸、液压平衡法三种方法有效的减小转子泵径向力,为日后推广该泵进入实用提供一定的理论参考。
[Abstract]:According to the fact that the theoretical tooth profile of the chord rotor pair does not satisfy the conjugate condition of each other, but can always keep in contact with the connecting center line, the isometric curve of the theoretical tooth profile is used as the actual tooth profile, that is, a new type of string rotor pump with roller isolation is proposed. Only a pair of gear teeth are in contact with each other, which can eliminate the phenomenon of oil trap and change the friction between contact surfaces from sliding friction to rolling friction, which greatly reduces the friction force. The approximate calculation formula of theoretical instantaneous flow rate is derived, and the instantaneous flow rate of the new type string rotor pump is shown to be approximately constant by using the method of "combination of numbers and shapes". By analyzing the radial force produced by liquid pressure and rotor meshing on the chord rotor and combining with the combination of radial force, it is concluded that the size of the oil pressing chamber can be reduced by selecting a reasonable rotor width and the diameter of the tooth top circle. The three methods of hydraulic balance can effectively reduce the radial force of the rotor pump and provide a certain theoretical reference for popularizing the pump in the future.
【作者单位】：常州大学机械工程学院;江苏省绿色过程装备重点实验室常州大学;
【分类号】：TH326

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