Detailed introductionThe crane: Consists of crab moving longitudinally and transverse, HM-C type electric hoist, drive system of longitudinally and transverse. The hoist and travelling motor the crane adopts are brake motors with cone rotor, so the crane is compact structured, simple operated, safety guaranteed, easy adjusted and maintained. Main girder: Longitudinal crab frame is fixed on main bridge of traverse by screw connection, suspended form a pair of fixed longitudinal I-steel by eight wheels. Rack is welded on the bottom of I-steel. Longitudinal crab is driven forward and back through rack-and-pinion gearing. Crab: The crab suspends form a pair of traverse I-steel by eight wheels, The hoist is fixed under the traverse crab. Crab is driven through a brake motor with cone rotor, gearbox, rack-and-pinion gearing, moved left and right.