变载式起升机构的动力性能

Dynamical function of loadamatic lifting mechanism

根据动力分析理论 ,讨论了变载式起升机构———游梁式抽油机的载荷、曲柄轴转矩和平衡之间的变化规律 ,考虑了构件转动惯量对机构动力性能的影响 ,给出了该机构动力分析的普遍方法 ,分析了原动机在两种工况下的效率曲线及影响效率的因素 ,提出了改善变载式起升机构动力性能的措施 .

In the paper, walking-beam pumping units are discussed. The variable law between the load, balance and torque of crank of the loadamatic lifting mechanism has been obtained by theory of force analysis. Then the efficiency curves of electric machine when it works as an electric motor or an electric generator has been studied. The cause of lower efficiency of electric machine was found. The means for improving dynamical function was presented.