Motor structure with integration of sheath and rotor lamination core

The invention provides a motor structure with integration of a sheath and a rotor lamination core. The motor structure comprises a rotor core formed by rotor laminations through lamination, a sheath with solid raindrop-shaped cage bars and a rotor end surface pressure plate. The sheath with raindrop-shaped solid cage bars is installed on the rotor lamination core. The shapes of the solid raindrop-shaped cage bars match the groove shapes of the rotor laminations. The rotor end surface pressure plate is embedded or inserted into the sheath at a high temperature. The starting performance of the motor can be raised. During the starting process, when the slip ratio is large, the solid raindrop-shaped sheath plays a leading role, the starting current is small, and the starting torque is large. During the operation process, when the slip ratio is small, the cast aluminum cage bars start to play a role, the equivalent resistance of the whole rotor is small, and the starting performance during the starting process is ensured. In addition, the provided motor structure can reduce the risk of separation of the rotor sheath and the lamination core caused by a centrifugal force effectively, and therefore the high-speed operation safety performance of the motor is raised.