Iron core structure capable of increasing iron core filling rate and shearing and assembling method of iron core structure

Abstract

The invention relates to an iron core structure capable of increasing the iron core filling rate and a shearing and assembling method of the iron core structure. A core column and a yoke of an iron core are polygonal cross sections which are laminated by multi-grade trapezoidal cross-section structures, and the lengths of adjacent bottom sides of two adjacent grades of trapezoids in the cross section of the core column or the cross section of the yoke are equal. The method comprises the steps of conducting longitudinal shearing on a silicon steel sheet roll material according to a prescribed angle formed by the roll material and a rolling direction to form a trapezoidal material; conducting transverse shearing on the trapezoidal material according to the prescribed angle and the length ofa single silicon steel sheet to form multiple single silicon steel sheets; laminating the multiple single chip silicon steel sheets into one grade of the iron core, wherein the cross section is a trapezoid; laminating multiple grades of different specifications according to the method; laminating the multiple grades into one iron core. The single-grade iron core cross section of the trapezoidal structure is adopted, the iron core filling rate is effectively increased, the materials of the iron core can be saved by 20%, the cost is lowered, three-phase coils are independently wound and then sleeved with a core column part of a stereoscopic laminated iron core, lamination is convenient, the assembly time is shortened, and the tool efficiency is improved.

Description

technical field [0001] The invention relates to an iron core structure optimization technology, in particular to an iron core structure for improving the filling rate of the iron core and a cutting and assembling method thereof. Background technique [0002] The iron core is an important part of the power transformer. It is not only the magnetic flux circuit of the transformer, but also the supporting core of the transformer. Its weight accounts for more than 30% of the total weight of the transformer, and the larger the product, the greater the proportion , so the cost of the iron core has a decisive influence on the total manufacturing cost of the transformer. Therefore, a very important link in the manufacture of transformers is the design of the iron core. [0003] my country's transformer manufacturing industry usually adopts the standard iron core design drawings within the enterprise. For many years, people have been looking for a shortcut to reduce the cost of the i...

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And the technical scheme that can satisfy above-mentioned requirement has not been reported at present

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