Axle-sticking running driving speed reducer of large-axle-load self-propelled metallurgical vehicle

The utility model relates to the technical field of driving speed reduction, in particular to an axle-sticking running driving speed reducer of a large-axle-load self-propelled metallurgical vehicle with the axle load reaching more than 40 tons, and discloses an axle-sticking running driving speed reducer of a large-axle-load self-propelled metallurgical vehicle. The transmission system is of a two-stage gear speed reduction structure, and an input gear shaft of the transmission system is installed in a first bearing hole of a lower box body and a first bearing hole of an upper box body through bearings. The input gear shaft is meshed with the first-stage large gear; the first-stage large gear is connected to the second-stage gear shaft in a flat key and interference mode. The secondary gear shaft is mounted in second bearing holes of the lower box body and the upper box body through bearings; the secondary gear shaft is meshed with the output bull gear; the output large gear is connected to the driving axle