基于动臂起重机的全倍率变换全吊钩互换的组合起吊装置

Combined hoisting device based on full fall transformation and lifting hook swapping of luffing jib crane

指出了起重机倍率变换的必要性,介绍动臂变幅起重机的滑轮组倍率和组合起吊装置的构造和特点,阐述该装置的全倍率变换方法和全吊钩互换方法。通过实例介绍该装置的起吊能力和性能参数,分析该装置全倍率变换、全吊钩互换和多种额定起重量变换的实现。

The paper proposes the necessity of crane fall transformation,introduces the falls of pulley block,as well as the structure and features of combined hoisting device for luffing jib crane,and presents the methods of full fall transformation and lifting hook swapping for such device.The hoisting capacity and performance parameters of such device is illustrated with the help of an actual instance,with analysis of implementation of its full fall transformation,lifting hook swapping and transformation of several rated hoisting capacities.