Explosion-proof type ultrahigh-efficiency cast copper rotor three-phase asynchronous motor

The invention relates to an explosion-proof type ultrahigh-efficiency cast copper rotor three-phase asynchronous motor. The explosion-proof type ultrahigh-efficiency cast copper rotor three-phase asynchronous motor comprises a rotor, a stator, a bearing outer cover, a bearing, a bearing inner cover, an end cover, a motor base and a junction box, wherein two ends of a rotating shaft of the rotor are arranged on the end cover through the bearing; the bearing inner cover and the bearing outer cover are arranged on two sides of the bearing respectively; the rotor is a cast copper rotor; a rotor iron core of the cast copper rotor is formed by overlapping rotor punching sheets with the same size and shape; conducting bar holes are distributed at the periphery of the rotor punching sheets uniformly; the conducting bar holes of each rotor punching sheet are overlapped and connected to form a conducting bar groove in the rotor iron core; a copper conducting bar is die-cast into the conducting bar groove; copper end ri