Wheel driving device in automobile wheel wind tunnel test

The invention relates to the field of wheel wind tunnel tests, in particular to a wheel driving device in an automobile wheel wind tunnel test, which comprises a support base, a plane displacement part fixed on the support base and a wheel driving unit connected to the plane displacement part, and the upper end of the wheel driving unit penetrates through a turntable to support and drive the wheels of an automobile; the wheel driving unit comprises a moving belt, a driving shaft system, a main driving motor, a driving side supporting bearing seat, a driven side supporting bearing seat, a hydraulic cylinder, a driven roller adjustable bearing seat, a connecting base body, a driving roller, a driven roller and a simulated bumping edge, and the driving side supporting bearing seat and the driven side supporting bearing seat are fixed at the upper end of the plane displacement part side by side; the two ends of the connecting base body are fixedly connected with the driving side supporting bearing seat and the dr