Correction of the methodology for calculating rope drums of cargo lifting machines
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Abstract
Analysis of the traditional calculation method for rope drums of lifting machines shows that it takes into account only part of the stresses that arise in the walls during loading operations.In this work determines the spectrum of stresses to which the drum wall is subjected as a thin shell, loaded with a tensioned cargo rope. Methods for calculating the components of this spectrum are proposed and formulas for their determination are presented. This method for calculating of rope drums of lifting machines takes into account the influence of the ridges of the grooves, which designed to evenly lay the rope on the drum. The results of calculations are presented, which confirm the great influence on the stress state of the rope drum shell of components of the stress spectrum that are not taken into account by traditional methods.
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References
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