Preliminary communication

Method of combating fatigue destruction of steel structures of mine hoisting machines

A. D. Mekhtiyev orcid.org/0000-0003-4879-0593 ; Karaganda State Technical University, Karaganda, Kazakhstan
F. N. Bulatbaev ; Karaganda State Technical University, Karaganda, Kazakhstan
A. V. Taranov ; Karaganda State Technical University, Karaganda, Kazakhstan
A. V. Bashirov ; Economic University of Kazpotrebsouz, Karaganda, Kazakhstan
N. V. Mutovina ; Karaganda State Technical University, Karaganda, Kazakhstan
A. D. Alkina ; Karaganda State Technical University, Karaganda, Kazakhstan

Abstract

The article presents the information of the identified defects of fatigue failure of steel structures of the brake mechanism of mine cable hoisting machines used to transport metallurgical coke from the mine to the surface. Using non-destructive testing methods a survey was carried out of the brake mechanisms of sixty mine cable hoisting machines. A method was developed to combat the fatigue failure of steel structures through the use of reinforcing elements to reduce their metal consumption and increase resistance to fatigue failure, while the use of expensive high-strength alloys is completely eliminated. To study the stress-strain state and fatigue failure of steel structures, a computer simulation method was used. Using the ANSYS computer program, the optimal forms of reinforcing elements were established and the loaded part of steel structures in continuous operation was simulated. Eleven computer models of a steel beam with various reinforcing elements were developed. The research results were used in practice in the repair of steel structures.

Keywords

mine hoisting machines; brake; fatigue strength; fatigue crack modeling; stress-strain state

Hrčak ID:

241221

URI

https://hrcak.srce.hr/241221

Publication date:

1.10.2020.

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