Small motor closed-slot cast-aluminum rotor

Abstract

The invention discloses a small motor closed-slot cast-aluminum rotor, which comprises a rotor iron core, and is characterized in that the rotor iron core is formed by laminating a plurality of rotorpunching sheets, shaft holes are formed in the centers of the rotor punching sheets, rotating shafts are arranged in the shaft holes in a penetrating manner along the axial direction of the shaft holes, the small motor closed-slot cast-aluminum rotor further comprises a squirrel cage, the squirrel cage comprises a plurality of cast aluminum bars penetrating through limiting holes in the rotor punching sheets, and the two ends of each cast aluminum bar are provided with a front end cover inserted in the axial direction of the cast aluminum bar and a rear end cover spirally connected in the axial direction of the cast aluminum bar respectively. According to the invention, by adopting a split type squirrel cage structure, the squirrel cage can be rapidly and conveniently disassembled and assembled from the two ends while stable connection of the squirrel cage and the rotor iron core is achieved, so that damaged parts on the squirrel cage can be independently replaced and maintained, highcost caused by overall replacement of the squirrel cage is avoided, and popularization and application of the small motor cast-aluminum rotor are facilitated.

Description

technical field [0001] The invention relates to the technical field of cast aluminum rotors, in particular to a closed-slot cast aluminum rotor for a small motor. Background technique [0002] Cast aluminum rotors are mostly the main rotating parts in power machinery and working machinery, and are often used in small motors. The rotor punch is the main component of the cast aluminum rotor. The rotor core is made of a certain number of rotor punches. The rotor iron There are a certain number of grooves in the core, and the molten aluminum is cast into them to form aluminum guide bars to realize the assembly and use of cast aluminum rotors. When the cast aluminum rotors are used for a long time, damage or failure of the rotor parts may occur. Therefore, Replacement repair operations are required for damaged or malfunctioning parts. [0003] Existing cast aluminum rotors for small motors usually adopt the method of pressure casting in the rotor iron core, and the aluminum rod ...

AI Technical Summary

Problems solved by technology

[0003] Existing cast aluminum rotors for small motors usually adopt the method of pressure casting in the rotor iron core, and the aluminum rod is integrally cast on the rotor iron core, resulting in a relatively fixed squirrel cage structure of the cast aluminum rotor, which cannot be split Therefore, it is impossible to replace the damaged parts in the cast aluminum rotor separately, which increases the maintenance and use cost of the cast aluminum rotor, and is not conducive to wide-scale promotion and use.

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