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游梁抽油机借助于安装在曲柄上的平衡块实现机械平衡,以保证抽油机的传动机构运转正常,受载均匀。曲柄本身的重量也产生平衡力矩。因此,抽油机的曲柄组合件是整个抽油机中钢材耗量最大的部件。例如,CK8-3.5-4000型抽油机的两根曲柄和四个平衡块的重量达5450公斤,占整个抽油机重量的39％,而苏联每年生产的抽油机有几千台,仅用于抽油机平衡的钢材耗量就相当可观,因此,制造曲柄组合件重量较轻的抽油机有着很大的经济意义,本文就这一问题加以讨论。
Beam pumping unit by means of a balancer mounted on the crank to achieve mechanical balance, to ensure that the pumping unit drive mechanism is functioning properly loaded. The weight of the crank itself also produces a balancing moment. Therefore, the crank assembly of the pumping unit is the most expensive part of the steel in the entire pumping unit. For example, CK8-3.5-4000 pumping unit two cranks and four balance weight weighing 5450 kilograms, accounting for 39% of the weight of the pumping unit, while the Soviet Union each year there are several thousand pumping units, only The amount of steel used for the balance of the pumping unit is considerable, so it is of great economic importance to make a lighter pumping unit with a crank assembly, which is addressed in this paper.