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。
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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.
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.