Middle-large sized motor stator and rotor anti-gear swelling iron core

Abstract

The invention relates to a motor stator and rotor iron core, concretely a middle-large sized motor stator and rotor anti-gear swelling iron core, and aims to solve the problems that a present stator and rotor iron core can not meanwhile guarantee compacting force and gear swelling requirements, is high in cost and difficult to process, and influences motor whole performance. In the scheme, the iron core comprises a silicon steel plate body which is provided with connection apertures, and connecting rods penetrate the connection apertures; the body is composed of self-bonded silicon steel plate bodies at two ends and a non self-bonded silicon steel plate at the central section; the silicon steel plate is assembled into a circular silicon steel plate layer through a self-bonded silicon steel plate set, and is then laminated and staggered; the silicon steel plate set is formed by laminating and bonding a plurality of layers of silicon steel plate units; the silicon steel plate units are provided with connection apertures; the silicon steel plate set realizes lamination connection through holes and rods. The iron core has the following advantages: first, the silicon steel plate body is used as an effective electromagnetic material, effectively compresses a gear portion and avoids gear swelling; second, the iron core is compressed as a whole, thereby avoiding unstable operation and large noise, and improving motor performance; and third, the iron core has a simplified structure, shortens the end portion length of a coil, reduces costs, and improves motor performance.

Description

technical field [0001] The invention relates to a motor stator and rotor iron core, in particular to a middle and large motor stator and rotor tooth expansion prevention iron core. Background technique [0002] The stator and rotor iron core of the motor is laminated by a certain number of silicon steel sheets into a whole iron core. In the prior art, the compression method of the iron core is to initially laminate the silicon steel sheets, and then use screw tightening or riveting or iron mandrel welding; a special finger-shaped pressing plate can also be designed for compression. But above-mentioned two kinds of methods all have certain defect: 1, adopt screw rod to tighten up or riveting or iron mandrel welding compaction, because the scattered distribution of fastening point position can't reach the complete coincidence between silicon steel sheet and sheet, make silicon steel sheet The interlayer resistance between the sheet and the sheet increases, thus causing the mo...

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Problems solved by technology

[0003] The invention solves the problems that the stator and rotor iron cores of the existing medium and large motors are difficult to ensure the pressing force and tooth expansion requirements at the same time, the manufacturing cost is high, the processing is difficult, and the overall performance of the motor is affected, and it provides a medium and large motor stator and rotor tooth expansion prevention iron core

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