TRANSMISSION SYSTEM FOR SEMI-DIRECT WIND POWER GENERATING SET

The present invention discloses a drive system of a semi-direct driven wind power generator, comprising a wind turbine system, a main shaft system, a gearbox, a generator, and a coupling, wherein the main shaft system comprises a main shaft, a transition flange, and a main shaft double-bearing structure, and the wind turbine system is connected to an end of the main shaft; the gearbox and the generator are of an integrated structure, comprising the gearbox, the generator, a gearbox flange, and a sun gear; the main shaft system is connected to the gearbox through the transition flange and the gearbox flange, and the sun gear passes through a hollow drive shaft of the generator and is connected to the coupling at the rear end of the generator; and an external wind load is transmitted to the generator through the wind turbine system, the main shaft system, the gearbox, and the coupling. The rigidity of the main shaft system and the reliability of the gearbox can be improved; the drive system is compact in structure, light in weight and high in reliability; and the drive system is designed with a coupling, which can effectively solve the overload protection of the gearbox and the influence of shaft current, and can compensate the alignment error of the generator and the gearbox and the offset of the sun gear of the gearbox.