Self-propelled metallurgical vehicle driving device combined loading test bench

The utility model provides a self-propelled metallurgical vehicle driving device combined loading test bench. The test bench comprises a main test driving device, an auxiliary test driving device, an axle supporting device, an axle load loading device, a torque loading device and a torque balancing device. The axle supporting device comprises a first axle supporting device used for supporting and fixing the main test driving device and a second axle supporting device used for supporting and fixing the auxiliary test driving device. Two sides of the main test driving device are respectively connected with a loading bearing I and a loading bearing II; the axle load loading device is used for applying different tensile forces to the loading bearing I and the loading bearing II; the main test driving device is connected with the accompanying test driving device, and the torque loading device is used for applying torque to the main test driving device and the accompanying test driving device; and the torque balanc