What is an mine electric locomotives?

Mine electric locomotives is a kind of traction equipment for rail vehicle transportation. The power is to use traction motor to drive the wheels to rotate, and to make the locomotive run on the track by means of the friction between the wheel and the rail surface. In this mode of operation, its traction is limited not only by the power of the traction motor (or internal combustion engine), but also by the friction between the wheels and the rail surface. The slope that locomotive can travel is limited. The slope of the transport track is generally 3 ‰, and the local slope cannot exceed 30 ‰. According to the structure classification, there are overhead mine electric locomotives and battery mine electric locomotives.