The optimizing design for the equalizing system ensured cargo to move horizontally in luffing process , the design method of balancing system achieved ideally effect 補償系統(tǒng)的優(yōu)化設計保證了貨物在變幅過程中優(yōu)良的水平位移性能,對自重平衡系統(tǒng)的設計方法和準則可使系統(tǒng)獲得理想的平衡效果。