Assembling method of large-scale permanent magnet wind power semi-direct drive generator

The invention discloses an assembling method of a large-scale permanent magnet wind power semi-direct drive generator, and solves the problem of how to assemble a stator and a rotor of the generator on a horizontal gear box. Belongs to the technical field of wind driven generators, and adopts a mode of simulating a gearbox output shaft side shell to truly simulate an installation environment in which a gearbox is vertically placed, and after a generator stator and a generator rotor are vertically assembled, a vertical assembly guide end cover is installed at the top ends of the stator and the rotor which are vertically assembled together, so that the gearbox is vertically assembled. The stator and the rotor which are vertically assembled together are fixedly connected into a whole through the end cover, the stator and the rotor are overturned under the condition that clearance fit between the stator and the rotor is guaranteed, and then the stator and the rotor are in butt joint with the horizontal gear box,