The analysis of mining conditions influence to operating time of dump trucks traction drive components

Abstract

Based on the analysis of downtime of dump trucks BelAZ-75131, used in the transportation of the rock mass in iron ore pits at the Kryvyi Rih region and coal mines in the region of the Kuznetsk Basin, it was found that downtimes happen 43% more often on the iron ore pits because of technical influences on truck electromechanical equipment. The results of crack detection analysis of elements of traction electric machines of those pit trucks show that the number of cases of breakdowns and deterioration of winding insulation, the failure of the brushes, tipping of an arc on engine manifold in comparison with the same defects of traction machines, which are equipped with a similar coal pits trucks, increases by 33.2%. To find the cause of this problem the mining conditions of the given model of truck were analyzed at the deposits of the two fields. It was established that the mining conditions does not significantly influence the occurrence of the identified differences in the number of faults of the mentioned nature.