柔性抽油机结构上使用钢丝绳和滑轮组替代了常规抽油机的游梁和连杆。
Wire rope and assembly pulley on the flexible pumping units replace balance beam and connecting rod on regular pumping units.
无游梁塔架式胶带传动长冲程抽油机由曲柄-连杆-滑块机构、动滑轮-窄胶带-定滑轮机构和复合滚筒增程机构组成。
The tower type belt driven long stroke pumping unit is composed of the crank-linkage-slide mechanism, movable pulley-narrow belt-fixed pulley mechanism and compound drum stroke-increment mechanism.
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