Wind power blade turnover device

The invention relates to a wind power blade overturning device which comprises a blade root overturning assembly and a blade tip overturning assembly. The blade root overturning assembly comprises a base, two guide sliding seats and at least two supporting rollers, the two guide sliding seats are adjustably arranged on the base in the direction close to or away from each other, and the at least two supporting rollers are rotationally arranged on the guide sliding seats respectively and are in rolling fit with the blade roots; the rotating axis of the supporting roller is parallel to the axis of the blade root; the blade tip overturning assembly comprises a lifting table, an arc-shaped bearing seat and a buckling and locking part, the arc-shaped bearing seat is rotationally arranged on the lifting table and bears the bottom face of the blade tip, a rotating part is arranged on the lifting table, and the rotating axis of the arc-shaped bearing seat is parallel to the rotating axis of the supporting roller; the