吊杆架可绕自身轴线回转，手摇起重机绳筒上缠绕的钢丝绳通过吊杆架带动吊具。
The suspension can turn winding it's axle line, the wire rope winding on the rope roller drive the suspension tools by the suspension shaft.
针对起重机的起升绳旋转现象，引入旋转接头以解决钢丝绳旋转问题。
A wire rope rotating joint is introduced to solve hoisting rope twisting phenomenon.
多台岸边集装箱桥式起重机共用一台换绳装置，既节省成本又节约能源。
A plurality of quayside container bridge cranes can share one rope-replacing device so as to save the cost and also save the energy.
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