Failure Analysis on Fracture of Drum Shaft of Casting Bridge Crane
In order to analyze the causes of the fracture failure analysis of the drum shaft of a 50/10t casting bridge crane,the fracture morphology analysis,material metallographic structure analysis and manufacturing process analysis have been carried out,the causes of the fracture failure of the drum shaft were comprehensively investigated,the dynamic analysis model of casting bridge crane was established,and the dynamic loads of drum and wire rope in the transmission chain were calculated,and the structural strength of the drum and the fatigue life of the drum shaft under dynamic load were calculated.The results showed that the structure hardness and material structure of the reel shaft are fine,the obvious stress concentration at the fillet of the drum shaft,and the fatigue life of the drum shaft of the bridge crane greatly reduced because of the cyclic dynamic loading,which showed that this fracture failure belongs to rotating bending fatigue fracture with high nominal stress.
NETL
NSTL
万方数据
维普
