QD型吊鉤橋式起重機主要由橋架、大車運行機構、小車、電器設備等幾個主要部件組成。根據(jù)使用頻繁成度的不同，分為A5、A6兩個工作級別。該起重機動作操縱全部在司機室內(nèi)完成?！?br /> 　　QD Model Hnger Bridge Crane maicly consists of bridge, trolley mechanism,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 drivers chamber.