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QD型吊钩桥式起重机，主要由桥架、大车运行机构、小车、电器设备等组成。根据使用频繁程度不同，分为A5、A6二种工作级别。
该起重机动作操纵全部在司机室内完成。
QD Type Hook Bridge Crane mainly c**ists of bridge，trolley tr**elling mechani**，crab and electrical appliances，and is divided into 2 working grades of A5 and A6 according to the use frequency．
This crane operation is completed in driver，s chamber.