Abstract
The most important mining enterprise indicators are the reliability and durability of its equipment. These equipment parameters have the greatest impact not only on the mining complex efficiency, but also on the extracted minerals price, as the equipment downtime, as well as, the cost of repair works and spare parts purchase are included in the cost of coal. Thus, the main goal in improving mining production is to improve the reliability and durability of used equipment. Researches carried out in the coal company ‘Kuzbassrazrezugol’ showed that the largest number of mining equipment downtime, in particular of mining dump trucks, occurs due to unexpected failure of a motor-wheel gearbox. The introduction of the additional technological operation for diagnosing the actual technical condition of gearboxes in the maintenance procedure will allow monitoring the condition of the entire gearbox and, in particular, its components by an in-place repair method. This method consists of continuous or periodic measurement of the vibrations of the operating gearbox mechanisms. The analysis of the unit and its individual parts suitability is carried out on the bases of obtained measurements. This methodology usage at a mining enterprise will significantly reduce the number of equipment downtime and thereby increase its efficiency.
Highlights
Today, the open-pit mining is the lowest cost method, highly efficient and what is the most important it is the safest mining method
Due to a very ineffective indicator of mining equipment reliability, the costs and expenses for repair works and spare parts purchase increase, which sometimes exceeds the amount of equipment cost in several times
When investigating the number of failures at Taldinsky Coal Mine branch, there is a tendency for a significant increase in the number of downtime of BelAZ mining dump trucks
Summary
The open-pit mining is the lowest cost method, highly efficient and what is the most important it is the safest mining method. This means that in order to reduce the number of unforeseen failures of mining dump trucks, it is necessary to develop and implement an additional technological operation to monitor the actual technical condition of the motor-wheel gearboxes.
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