Modern methods of motor-wheel gearboxe diagnostics of BelAZ dump trucks

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.