STUDY OF OPERATIONAL RELIABILITY OF PORTAL CRANES “GANZ” 5-30

The study analyzed malfunctions of the mechanisms of GANTZ portal cranes with a lifting capacity of 5 tons that occur during operation under heavy load conditions in a river port. Based on the data obtained, the availability, failure and recovery rates of the equipment were calculated. The analysis of the study results showed that the largest number of failures was found in the mechanisms for moving, lifting and changing the reach of the crane boom. The main reasons for the failure of the lifting mechanisms are the wear of brake pulleys, destruction and wear of shafts and bearings in gearboxes. The failures of the slewing mechanisms are mainly due to damage to the coupling that connects the gearbox to the open gear. Failures of the boom outreach change mechanisms are caused by damage to the rack and pinion teeth, hinge joints, bearings, and dampers.