动滑车 fly block; mobile block; movable block; movable pulley; moving block; running ..
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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.
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 movable backrest plate bed is characterized in that: along with the rocking up of the movable backrest plate, the pulley pole support is inclined by the backrest plate until being supported.
本发明的特征在于随着活动靠背板的摇起，滑轮支杆随靠背板倾斜直至撑起。
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