The application discloses a bearing structure for a
wind driven generator, which comprises a
tower drum, a cabin and a generator, a cabin cooling
liquid circulation system is arranged in the cabin, a positioning cabin is arranged in the cabin, a positioning cabin shell is fixed to the inner wall of the generator frame body, a bearing main body and a heat dissipation mechanism are arranged in the positioning cabin, the heat dissipation mechanism comprises a liquid cooling heat dissipation
assembly and an air circulation heat dissipation
assembly, the liquid cooling heat dissipation
assembly is arranged on the bearing outer ring, the air circulation heat dissipation assembly is arranged in the cabin, a
clutch mechanism is fixed to one side of the positioning cabin, and a transmission mechanism is used for transmitting power of a main shaft to the air circulation heat dissipation assembly. The cooling liquid of the bearing cooling
system is connected with a cabin inner cooling
system, so that the equipment occupation is reduced; a cooling groove is arranged, the cooling liquid or cabin outer cooling air is drawn by a negative pressure
turbine connected with the main shaft, and then the cooling liquid or the cabin outer cooling air is introduced into the bearing inner ring to be cooled; and a plurality of cooling systems are operated according to the situation, so that the operation cost of the equipment is saved.