Abstract
One of the most important indicators of mining complexes are reliability and durability of their components. Studies have shown that the largest amount of mine dump truck down time occurs due to unforeseen failures of a motor-wheel gear. The introduction of additional technological processes to diagnose the actual technical condition of a gear in the maintenance procedure will make it possible to maintain directly the state of its component parts with in-place manner. The method of diagnosing the condition of a motor-wheel gear is based on physical and chemical analysis of oil, as well as its temperature control. During open pit machinery exploitation, various mechanical impurities of wear products of rubbing surfaces accumulate in the operating oil, so it is possible to predict the degree of wear of gear units and mechanisms based on these mechanical impurities. The introduction of this method in production will significantly reduce the down time of dump trucks, thereby increase the productivity of the enterprise and reduce repair costs.
Highlights
The surface mining takes the leading position in mining industry due to such factors as safety, efficiency and the highest productivity
While investigating the number of failures that occurred at OJSC “Kuzbassrazrezugol” for the period under study among BelAZ dump trucks, there is a tendency of significant increase in transport down time
The analysis of dump trucks down time causes revealed that the greatest number of down time was due to the failure of a motor-wheel gear, which amounted to 64,238 operating hours, which is 18.8% of the total down time of the dump trucks in this enterprise
Summary
The surface mining takes the leading position in mining industry due to such factors as safety, efficiency and the highest productivity. Carrying out of this operation is possible by various methods, the choice of which depends on many factors: the availability of necessary equipment at the enterprise, trained and certified personnel and so on
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