The basic principle of balance hoist was detailed and the balance conditions and methods of rod system were investigated and analyzed.
本文阐述了平衡吊的基本原理，并对其平衡条件及杆系的平衡方法进行了分析和研究。
Based on analyzing the unbalanced force of crank-connecting rod mechanism, this paper describes the balance of motorcycle single-cylinder engine according to practices home and abroad.
在分析摩托车发动机曲柄连杆机构不平衡力的基础上，结合国内和国外的实践，总结了摩托车单缸发动机的基本平衡方法。
Four-column type double-direction guiding and crank connecting rod synchronized balance mechanism are adopted to guarantee equal force in the cutting area of machine.
采用四柱式双寻向和曲柄连杆同步平衡机构，保证冲裁区域受力均匀。
Wire rope and assembly pulley on the flexible pumping units replace balance beam and connecting rod on regular pumping units.
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。
Double oil cylinder and precise four-column automatic balance connecting rod structure, which can guarantee the absolutely same cutting depth of each cutting position.
双油缸、精密四柱自动平衡连杆结构，保证每一个裁断位置裁断深度完全相同。
The rocker arm is connected with the balance weight block through a rotary shaft, a cam, a pulley, a steel cable and a lifting rod, and an initial position can be selected through a barrier shaft.
摇臂通过转轴、凸轮、滑轮、钢丝绳、提升杆与配重块相连，初始位置可由挡轴选定；
The rocker arm is connected with the balance weight block through a rotary shaft, a cam, a pulley, a steel cable and a lifting rod, and an initial position can be selected through a barrier shaft.
摇臂通过转轴、凸轮、滑轮、钢丝绳、提升杆与配重块相连，初始位置可由挡轴选定；
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