Shaft hole cooling and lubricating system

The invention relates to a shaft hole cooling and lubricating system. The shaft hole cooling and lubricating system is composed of an internal circulation oil path and an external oil path. The internal circulation oil path comprises an oil pump, an oil tank, a rotor-stator connector and a rotation shaft. The external oil path comprises a cooling sleeve, an oil pump and main fuel tank. Compared with other cooling and lubricating systems, the shaft hole cooling and lubricating system provided by the invention is simpler in structure, fewer in parts and easier to realize and machine, the thickness of an external casing and the space of a power generator are reduced to a great degree, and the weight of the system is reduced; the machining difficulty is lowered; and the dual-oil-path structure is adopted, so that the cooling and lubricating effects are obvious.