A wind turbine generator set with a lifting and lowering device

Abstract

The present invention belongs to the technical field of wind power generation, and particularly relates to a wind turbine generator set. A wind turbine generator set with a lifting and lowering device comprises a tower and a nacelle mounted on the top of the tower; the nacelle is provided with an accommodating cavity, and a generator assembly is arranged in the accommodating cavity; the generator assembly is used for driving an impeller outside the nacelle; the nacelle is connected with a lifting assembly on the tower through a hooking assembly, and the nacelle can be lifted and lowered along the tower under the action of the lifting assembly; the lifting assembly comprises a frame body mounted on the top of the tower, a pulley block is arranged on the frame body, a steel wire rope is arranged on the pulley block, one end of the steel wire rope is connected to the hooking assembly through the pulley block, and the other end of the steel wire rope penetrates into the tower through the guide of the pulley block and is connected to a winch on the ground through the tower. The device uses the lifting assembly on the top of the tower to lift and lower the nacelle, and can complete the maintenance of the generator, impeller, nacelle and other components without relying on a large crane.