Structures of deformation and destruction of heavy-load M-200 dump trucks (USA) running gears which are operated in the conditions of low temperatures

During the winter period in Yakutia coal opencast systematically there are destructions of running gears, details of frames of heavy-load dump trucks. By research the deformation structures and breaks it was revealed mechanisms of accumulation the damage of fatigue type and single destructions in winter time. For the first time it was recorded at operational destruction structural forms of fatigue deformation of metal at the microlevel. Recommendations about regulations the routine inspections of details of the running gears, frames of dump trucks working at low temperatures are made.