Rotating shaft and rotor assembly adopting rotating shaft structure

The utility model relates to a rotating shaft and a rotor assembly adopting the rotating shaft structure, a hollow oil cavity is arranged in the rotating shaft, two ends of the oil cavity are respectively provided with a plurality of oil channels C used for being communicated with an oil channel on a rotor iron core, and the oil channels C are arranged at equal intervals along the circumferential direction and extend along the radial direction. One end in the oil cavity is further rotationally provided with a spiral pressurizing piece through an oil cavity sealing bearing, and the oil cavity sealing bearing is located on the outer side of the oil duct C. According to the utility model, the internal cooling design of the rotor is adopted, and the oil cavity and the spiral pressurizing piece are arranged in the rotating shaft, so that cooling oil in the oil cavity can be accelerated to flow out of the rotating shaft, a rotor iron core, magnetic steel and the like are indirectly and rapidly cooled, and the risk