Large permanent-magnet direct-drive wind-driven generator iron core ventilation slot limiting tool and limiting process

Abstract

The invention provides a large permanent-magnet direct-drive wind-driven generator iron core ventilation slot limiting tool, which comprises a ventilation slot limiting tool body and a ventilation slot plate. The main body of the ventilation slot limiting tool body is clamped in an iron core lamination; and the outer side wall of the middle portion of the ventilation slot limiting tool body is provided with a clamping ring and a first step portion, wherein the diameter of the clamping ring is larger than the diameter of the ventilation limiting tool body, and the first step portion is locatedbelow the clamping ring. The ventilation slot plate comprises a first clamping ring portion and a supporting portion extending from the first clamping ring portion to the vertical direction of the first clamping ring portion, wherein the first clamping ring portion is clamped between the first step portion and the iron core lamination. After improvement, the operation difficulty of staffs is reduced; ventilation slot adjustment is not needed, so that the labor intensity of the staffs is reduced; and the ventilation slot plate and a ventilation slot piece can be prevented from protruding out ofthe surface of the iron core, rework is reduced, and iron core lamination quality and overall insulation quality are improved.

Description

technical field [0001] The invention belongs to a process method for limiting ventilation slots of generator iron cores, and more particularly relates to a positioning tooling for iron core ventilation slots of large-scale permanent magnet direct-drive wind power generators. Background technique [0002] During the core stacking process of large permanent magnet direct drive wind turbine motors, due to ventilation requirements, a ventilation slot structure will be placed when the iron core punches are stacked to a certain height, usually a ventilation slot plate, and some ventilation slots will be added. Normally, there is a large gap between the ventilation slot plate, the ventilation slot sheet and the punching plate fixing key (for positioning) on ​​the iron core, and there is room for left and right offset, which will protrude from the iron core slot, and there is a risk of scratching the coil. At present, the position of ventilation slot plates and ventilation slots is ...

AI Technical Summary

Problems solved by technology

At present, the position of ventilation slots and ventilation slots is basically restricted by slot-like rods in China. However, in the motor manufacturing proces

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