An optimum design of the common crane roll shaft based on simulation of fatigue fault

The problem of definition of the shaft sizes for the general-purposes load-lifting crane, providing the minimal weight at the set durability in conditions of fatigue crack growth is considered. The optimum sizes of shafts for the cranes of various carrying capacity, modes and operating conditions are resulted. Was built a number of typical shafts of the lifting mechanisms of cranes of bridge type for number of standardised values of rated lifting capacity, operation modes and recommended expansion of the cargo polyspast