Methods and devices for independently pitching of wind turbine

A device for independently pitching of a wind turbine, comprising:

• a paddle hub, heat dissipation holes, a pitch motor, and a lubricating ball, wherein an outer side of the paddle hub is connected to a wind turbine main shaft, and the outer side of the paddle hub is connected to paddles of the wind turbine;
• the outer side of the paddle hub is provided with a bearing inner ring, and an outer side of the bearing inner ring is rotationally connected to a bearing outer ring, an inner side of the bearing inner ring is provided with a second gear, an inner side of the bearing outer ring is provided with connecting holes, an interior of the bearing outer ring is provided with an annular flow chamber communicated with the connecting holes, and the annular flow chamber is an annular structure for the lubricating fluid to flow;
• the heat dissipation holes are opened in the outer side of the paddle hub an interior of each of the heat dissipation holes is provided with a dust-proof net, the dust-proof net is provided with inner and outer layers, and a waterproof breathable membrane is disposed between the inner and outer layers of the dust-proof net;
• the pitch motor is disposed on an inner side of the paddle hub, an output shaft end of the pitch motor is connected to a first gear, and the first gear meshes in an inner gear ring of the second gear;
• and
• the lubricating ball is disposed on the inner side of the paddle hub, and an outer wall of the lubricating ball is connected to an air pump, an airbag is disposed on an interior of the lubricating ball, the airbag is connected to the air pump, and the interior of the lubricating ball is filled with a lubricating fluid, and the lubricating ball is connected to the connecting holes through an outer end of connecting tubes.