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Journal of Mining Sciences

2018 year, number 2

Calculation of Life of Functional Parts in the Structure of Mining Machines

O. P. PANFILOVA, V. S. VELIKANOV, I. G. USOV, E. YU. MATSKO, I. M. KUTLUBAEV
Nosov Magnitogorsk State Technical University, Magnitogorsk, 455000 Russia
Keywords: Деталь, ресурс, прогнозирование, методика, система, звенья, схема, линеаризация, Part, life, prediction, procedure, system, links, scheme, linearization

Abstract

The issues connected with the prediction of mining machinery life are discussed. The basic index of reliability is an average life. The formulas are substantiated for calculating the average life of gear wheels, friction couple parts, shafts, and axles. The procedure proposed to calculate the life standard deviation is based on the method of linearization of functions of random variables. In this way, the life of standard parts of mining equipment can be calculated as random values with regard to operation conditions. Application of the procedure is exemplified by calculations of the life of a roller bearing. The calculation results are confirmed in the numerical experiment by the Monte Carlo method.