A rotor cooling mechanism

Abstract

This utility model relates to the field of motor rotor technology, and in particular to a rotor cooling mechanism, including a rotating shaft, a rotor core, rotor end plates, and a steel sleeve. The rotor core is sleeved on the rotating shaft, the rotor end plates are located at both ends of the rotor core and sleeved on the rotating shaft, and the steel sleeve is located at both ends of the rotor end plates and sleeved on the rotating shaft. The rotor end plates include an inner hole, with radial oil passages distributed circumferentially around the inner hole. Axial oil holes are distributed circumferentially connecting the radial oil passages. The radial oil passages penetrate the rotor end plates. An annular oil groove is provided on one side of the rotor end plates, and the annular oil groove is connected to the radial oil passages. An axial oil passage is provided inside the rotating shaft, with radial oil passages distributed circumferentially connecting the axial oil passages. The radial oil passages penetrate the rotating shaft and are aligned with the radial oil passages. The steel sleeve has axially penetrating oil holes distributed circumferentially, which are aligned with the axial oil holes on the rotor end plates. This utility model can reduce local overheating inside the rotor and achieve efficient rotor cooling.

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