QD型吊鉤橋式起重機，主要由橋架、大車運行機構、小車、電器設備等組成。根據使用頻繁程度不同，分為A5、A6二種工作級別。
該起重機動作操縱全部在司機室內完成。
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.