Rapid nut pre-tightening device for wind turbine generator

The utility model discloses a quick pre-tightening device for a nut of a wind turbine generator, and relates to the technical field of wind power equipment. A quick pre-tightening device for a wind turbine generator nut comprises a screwing assembly used for screwing the wind turbine generator nut and a driving assembly used for driving the screwing assembly. The screwing assembly comprises a base and a limiting claw used for clamping a wind turbine generator nut, the limiting claw is arranged on the end face of the base, and the end face, away from the limiting claw, of the base is connected with the driving assembly. A wind turbine generator nut can be clamped through the limiting claw, the base and the limiting claw are driven to rotate through the driving assembly, then the nut is screwed and installed on a corresponding bolt or stud, and installation and pre-tightening operation on the nut is completed. The equipment is simple in structure and convenient to operate, meets the actual field requirements of