Abstract
The primary task of all enterprises in mining industry is to increase the durability and reliability of the mining complex. These very indicators provide nonstop minerals mining, and as a result, productivity increases. Indicators maintaining at high level can be achieved by different ways, but the most effective method is repair-in-place diagnosis of the actual technical condition of the main units and assemblies of equipment, as it is less costly and the most informative. To identify gear malfunctions, the physical and chemical analysis of the used oil is used to determine metallic impurities. A comparative analysis of wear products accumulation in rotary gears of mining excavators and gearboxes of the motor-wheel of dump trucks revealed the similarity of mathematical models for the determination of metallic impurities in used oil. The “universal” mathematical model is given in the paper; it allows to determine the actual technical condition of gearboxes for various equipment with a few assumptions. Moreover, the model takes into account various indicators of the environment, used oil, as well as the operating parameters of the equipment.
Highlights
Mining enterprises use a variety of mining technologies
The open-pit mining of coal deposits has shown itself as the most efficient, less costly and safer method. This method has a number of drawbacks: mining complex downtime associated with unforeseen failures of various units and assemblies of one type of equipment
The mechanisms low reliability leads to decrease in this indicator for the equipment, and as a result, there is decrease in the mining complex productivity in general, because the failure of at least one unit from the production line leads to its full stop
Summary
Mining enterprises use a variety of mining technologies. open and closed methods of coal mining are the most widely used in mining industry. During operation of units and assemblies of coal mining equipment, the wear of rubbing parts occurs, leading to decrease in their resource and, as a result, to decrease in reliability and durability [12]. Accumulation of metal products of rubbing surfaces wear in the units and assemblies of mining equipment occur because of the oils washing properties.
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