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针对常规游梁式抽油机存在曲柄转矩和悬点载荷峰值大、冲程短、钢丝绳磨损严重的缺点,在常规游梁式抽油机结构特点基础上设计了随悬点位移变化且对平衡力臂进行调节的后置滑轮式长冲程抽油机。采用钢带代替传统的钢丝绳固定在后置滑轮上,后置滑轮在改变平衡力臂的过程中驱使钢带绕在其上,以此来达到增大冲程、减小摩擦损耗的目的。分析计算了该抽油机的运动特性,并以CYJ10-1.8-200型常规游梁抽油机进行实例计算分析,发现采用后置滑轮机构后,悬点位移峰值增加了150%左右。建立了该抽油机1∶10的实体模型并进行了试验,结果表明,该抽油机计算分析结果与试验结果相符合,验证了悬点运动特性计算分析结果的正确性。
Aiming at the shortcomings of traditional beam pumping unit such as large crank torque and heavy load, short stroke and serious wear of the steel wire rope, the displacement of the conventional beam pumping unit Rear boom long-stroke pumping unit with arm adjustment. The steel belt is used instead of the traditional steel wire rope to be fixed on the rear pulley, and the rear pulley drives the steel belt around the steel belt during the process of changing the balance arm to increase the stroke and reduce the friction loss. The motion characteristics of the pumping unit are analyzed and calculated. The calculation and analysis of the conventional beam pumping unit of CYJ10-1.8-200 shows that after the rear pulley mechanism is used, the peak value of the displacement of the suspending point increases by about 150%. The 1:10 solid model of the pumping unit was established and tested. The results show that the calculation results of the pumping unit are consistent with the experimental results, and the correctness of the calculation and analysis of the movement of the suspending point is verified.