crank counterbalance

基本解释

On some pumpers, the rotary counterbalance can be adjusted by shifting the position on the crank arms.
在某些抽油机上，旋转平衡块可由改变其在曲柄臂上的位置进行调整。
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The pumping units with phased crank counterbalance possess good dynamic characteristics and can save electric energy in a certain degree.
异相型抽油机具有良好的动力特性和一定的节能效果，是近几年来我国发展较为迅速的一种抽油设备。
The authors analyze the motion law of the balancing mechanism, the forces on the counterbalance and the torque on the gearreducer crank shaft.
还对平衡机构的运动规律、平衡块受力及减速箱曲柄轴扭矩等进行了分析。