Kolosov D. Development of the Theory of Hoist Engines with Head Rubber-ropes Cables

The thesis deals with the actual scientific problem of determining laws of formation and redistribution of the stress-strain state in the head rubber-rope cables at the interaction with the elements of the hoist in the operating conditions on the basis of model concepts of mechanics of its spatial deformation at destructive and nondestructive loads to justify the technical solutions for the creation of modern mine hoisting engines with the enlarged life-span, efficiency level and operational safety. The mathematical description and determination establishment of earlier unknown laws of the stress-strain state of the flat rubber-rope cable are fulfilled: - for the spatial deformation of the winding element of a mining hoisting machine; - in the devices joining the lifting vessels; - at variable cross-section due to discrete changes of the number of wires, - at the interaction with the working member of a hoist. The rational design parameters of rubber flat ropes of the constant and of stepped cross section, design requirements of working organs and tow hitch in a hoist, automatic control system of the technical state of ropes, the rate of exploitation of the mining hoists with the head rubber-rope cables for the mining industry are justified.