Self-propelled metallurgical vehicle driving device combined loading test bench and working method thereof

The invention provides a self-propelled metallurgical vehicle driving device combined loading test bench and a working method thereof. The self-propelled metallurgical vehicle driving device combined loading 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 t