往复泵偏置式曲柄滑块机构的运动和动力分析

Kinematic and dynamic analysis of reciprocating offset slidercrank mechanism.

为了了解偏置结构的性能特点和提高往复泵的设计水平 ,探讨了偏置对曲柄滑块机构的运动和动力的影响。阐述了偏置式和对心式 2种结构的基本特点 ,通过图解和计算分析了偏置对冲程长度、柱塞吸入和排出速度、连杆传力性能及十字头对导板正压力的影响 ,得出正偏置可以提高连杆传力性能 ,降低十字头对导板正压力的结论。采用正偏置结构设计的SPMTWS6 0

In order to make clear the performance characteristics of offset structure and improve the design of reciprocating pumps, kinematic and dynamic analysis of offset slidercrank mechanism is made. The influence of the offset structure on stroke length, plunger suction and discharge rate and force transfer capacity of the connecting rod as well as the effect of crosshead on positive pressure of guide plate are analyzed. It is indicated that the force transfer capacity of the connecting rod can be improved and the crosshead positive pressure on the guide plate can be reduced by adopting the positive offset structure.