High-speed large-torque pure electric mine truck speed reducer

The utility model relates to a high-speed large-torque pure electric mine truck speed reducer which comprises a box body, input shafts, output shafts, a power system and an oil supply system, the input shafts, the output shafts, the power system and the oil supply system are arranged on the box body, and the input shafts correspond to the output shafts and are all connected with the power system. The input shaft and the output shaft are in meshing transmission through an input gear and an output gear which are respectively arranged on the input shaft and the output shaft; the power system comprises a plurality of driving motors which are arranged corresponding to the input shaft; the oil supply system comprises a circulating pump, a cooler and an oil supply pipeline, and the circulating pump pumps lubricating oil to the cooler through the oil supply pipeline. A plurality of driving motors are adopted as power sources, a plurality of input shafts of a speed reducer are respectively connected with one driving m