转动导杆—齿轮机构驱动叶片差速泵  

DIFFERENTIAL VELOCITY VANE PUMP DRIVEN BY ROTATING GUIDE-BAR-GEAR MECHANISM

作　　者：陈明[1] 张勇[1] 訾进锋[1] 李瑰贤[1] 

机构地区：[1]哈尔滨工业大学机电工程学院,哈尔滨150001

出　　处：《机械工程学报》2006年第B05期54-59,共6页Journal of Mechanical Engineering

摘　　要：转动导杆机构具有把曲柄的匀速转动转换为导杆的非匀速转动的特性。利用这一特性,把两个转动导杆机构和齿轮机构组合形成了叶片差速泵的驱动系统。该驱动系统使同轴安装于泵壳内的两个叶轮周期性不等速转动,从而使两个叶轮的相邻叶片周期性张合,来实现密闭容积变化进而完成吸排液过程。转动导杆机构曲柄和导杆的回转中心距与曲柄长度的比值是影响泵的性能的一个关键参数。该值越大,泵的排量也越大,但是,随着此值增大,泵的流量脉动和驱动轴上的工作阻力矩波动也在加剧,使泵的工作性能降低。在实际设计中此值取0.3- 0．5比较适宜。The rotating guide-bar mechanism has the characteristic of transforming the uniform rotation of the crank to the nonuniform rotation of the guide-bar. Thus, two rotating guide-bar mechanisms and gears mechanisms can be combined to form a driving system of the differential velocity vane pump. The driving system makes two coaxial impellers fixed inside the hull rotate with periodical norfuniform velocity, and the neighboring vanes of the two impellers will open and close periodically, so the volume of the compartments vary, which makes liquid flow in and out. c, the ratio of the distance between the rotating centers of the crank and the guide-bar to the length of the crank, affects the performance of the pump and is a pivotal parameter. The larger c is, the higher the flow of the pump. However, as c increases, the fluctuations of both the flow and resisting torque on the driving shaft are greater, and the performance lowers. In the real design, the feasible value ofc is 0.3-0.5.

关 键 词：转动导杆机构 齿轮机构 叶片差速泵 

分 类 号：TH3[机械工程—机械制造及自动化]