【摘要】 提出了一种行程可调的多杆机构用于计量泵中,建立了该机构的解析运动模型,研究了在不同结构参数条件下计量泵的输出性能,揭示了计量泵的性能与结构参数选择间的关系,为计量泵的设计和控制提供了理论依据.研究结果表明通过调节控制构件的长度可实现活塞行程长度的变化,满足泵工作过程中活塞行程可调和泵中流量可变的要求.更多还原

【Abstract】 A multi-bar mechanism with an adjustable stroke applied to metering pumps is presented. The analytical kinematic model is established. The output capability of metering pumps is studied with different stuctural parameters. The relationship between performance and different choices of structural parameters is revealed, thus providing the theoretical basis for the design and control of metering pumps. The research results indicate that the stroke length of a piston is varied by adjusting the length of the control links, and the requirement is satisfied that it allows the piston stroke to be adjusted in length and permits the pump flow to be changed during the pump functioning.更多还原