LOADS EXPERIENCED BY LOAD-BEARING COMPONENTS OF MINE HOIST INSTALLATIONS DUE TO RANDOM IRREGULARITIES AND MISALIGNMENTS OF THE GUIDE STRING
Journal Title: Journal of Machine Construction and Maintenance - Year 2018, Vol 110, Issue 3
Abstract
Report data from periodic overhauls of skips and cages operated in one underground mine in Poland indicate that the majority of registered defects of load-bearing elements include broken wires and cracks developing in load-bearing cables. Of particular interest is cable bending while the conveyance is being guided in the shaft due to interaction forces between the shaft steelwork and the conveyance. Based on results reported in articles [5, 7] the author summarised the results of the dynamic analysis of a hoisting installation during its normal duty cycle, restricted to the investigation of conveyance and shaft steelwork interaction forces. To determine stresses acting in load-bearing elements of the conveyance, a model to be used in the computational procedure was created based on its technical specification. For the defined 2D schematic model, the author found the values of force acting in the given section associated with the shaft steelwork–conveyance interaction force arising during the conveyance travel with fixed velocity V0 = const. The values of forces acting in the given cable sections within the skip structure were used to determine the maximal stresses related to the single element (cable). In the final sections, the author indicates the directions for further research necessary to work out a comprehensive solution to the original research problem.
Authors and Affiliations
Stanisław WOLNY
Keywords
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- EP ID EP614867
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