Water-cooled motor provided with cast copper rotor

Abstract

The invention discloses a water-cooled motor provided with a cast copper rotor, comprising a motor shaft, a front end cover, a casing, a stator, a rotor, and a rear end cover; the rotor includes a rotor iron core; There are shaft holes in the middle of the rotor punches, and a number of guide bar holes are evenly distributed around them. The guide bar holes in each rotor punch are stacked and connected to form guide bar grooves in the rotor core. The groove is a spiral groove; a spiral copper guide bar is embedded in the guide bar groove, copper end rings are provided at both ends of the rotor core, and the copper end rings are fixedly connected to both ends of the copper guide bar; further improvement lies in: the guide bar groove There are copper guide bars in die-casting, and the copper end rings at both ends of the rotor core are connected with the copper guide bars by die-casting; a number of grooves are evenly distributed on the outer end surface of the copper end ring and along the diameter direction of the copper end ring; the front cover, the rear Temperature sensors are respectively arranged in the end covers. The invention prevents the copper bars in the rotor from moving in the guide bar slots, and has good reliability.

Description

technical field [0001] The invention relates to an electric motor, in particular to an electric motor with a copper rotor structure. Background technique [0002] The rotor in the copper rotor structure motor is a copper rotor. After the copper bar is processed to a certain shape and size, the copper bar is squeezed into the rotor core through an extrusion process to closely match the rotor groove shape. The copper end ring and The copper strips are connected by welding. This structure requires a high degree of matching between the copper bars and the rotor slots, otherwise it will cause the copper bars to move in the slots, which will bring hidden dangers to the long-term operation of the motor. Contents of the invention [0003] The invention aims at the deficiencies of the prior art, and provides a water-cooled motor with good reliability and provided with a cast copper rotor, which avoids the movement of the copper bar in the guide bar groove. [0004] The present in...

AI Technical Summary

Problems solved by technology

This structure requires a high degree of matching between the copper strip and the rotor slot, otherwise it will cause the copper strip to move in the slot, which will bring hidden dangers to the long-term operation of the motor

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