The optimizing design for the equalizing system ensured cargo to move horizontally in luffing process, the design method of balancing system achieved ideally effect.

• 补偿系统的优化设计保证了货物在变幅过程中优良的水平位移性能，对自重平衡系统的设计方法和准则可使系统获得理想的平衡效果。