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根据游梁式抽油机四连杆机构的几何关系和运动特点，推导出任意时刻游梁摆角的数学表达式，进而求出游梁摆动的角位移、角速度和角加速度计算公式，以及悬点运动位移、速度和加速度的计算公式。以兰通产ＣＹＪ２．７２６Ｂ型抽油机为例进行了计算，并在０°～３６０°曲柄转角范围内绘制了悬点运动速度和加速度的变化曲线，从而给出了游梁式抽油机悬点运动参数计算的一种方法。该方法可用于曲柄任意方向旋转的游梁式抽油机，也适用于前置式抽油机，还可作为研究其它类型抽油机运动规律时参考。
According to the geometry and movement characteristics of the four-bar linkage of the beam pumping unit, the mathematical expression of the swing angle of the beam at any moment is deduced, then the formulas of the angular displacement, angular velocity and angular acceleration of the beam swing are obtained, Motion displacement, velocity and acceleration of the formula. Taking CYL27.726B pumping unit of Lantian Production as an example, the change curve of motion speed and acceleration of catenary is plotted in the crank angle range of 0 ° ~ 360 °, A Method to Calculate the Kinematic Parameters of Rod End Point of Pumping Unit. The method can be applied to a beam pumping unit rotating in any direction of a crank, a front-type pumping unit, and a reference for studying the movement rule of other types of pumping units.