Method for little air-gap generator motor assembling

Abstract

The invention relates to a method for mounting a generator rotor with small air gap. The method comprises the following specific steps: a guide rail is fixed and is provided with a trolley; the guide rail is provided with a sleeve in the extending direction; a bearing seat at the excitation end is hung on the rotor; a generator coupler is arranged on the rotor; a connecting shaft is arranged on the generator coupler; a lifting rope of a crane lifts the rotor to the upper part of the guide rail; the rotor is placed on the trolley, and the trolley drags the rotor to pass through the sleeve; the connecting shaft extends out from the steam end of the sleeve and hangs the connecting shaft; the bearing seat at the excitation end is removed; the trolley retreats from a bearing shift of the rotor; the rotor is dragged by a bracket; the trolley drags the rotor to move forward; the rear section of the connecting shaft is filled up at the steam end through a pad block, and the front section of the connecting shaft is detached; according to the method, three sections of the connecting shaft are detached by sections; the trolley and the guide rail are detached, and the bearing seat at the excitation end is hung on the rotor; and the rotor is hung to the proper position. The method has the advantages that the method has strong practicability, relieves labor intensity, strengthens safety coefficient, improves working efficiency, provides reliable foundation for solving similar difficult problems and has popularization value.

Description

technical field [0001] The invention relates to a method for threading a generator rotor with a small air gap, which can solve the problems of smoothly threading a generator rotor in a limited state with a small air gap, and belongs to the technical field of threading a generator rotor. Background technique [0002] Generator rotor assembly is usually done by placing an arc-shaped slide plate on the stator core. The rotor rests on the arc-shaped slide plate through the journal bracket. One end pulls the rotor, and the other end lifts the rotor, and slowly inserts the rotor into the generator iron core. Inside. [0003] There is a thin sleeve between the rotor and the iron core of the evaporative cooling generator. Unlike the iron core, the thin sleeve cannot bear the weight of the rotor, so the arc-shaped slide plate cannot be used to wear the rotor, and the air gap is reduced to 24mm (traditional wear The installed air gap is 49mm), so the traditional method of installing ...

AI Technical Summary

Problems solved by technology

[0003] There is a thin sleeve between the rotor and the iron core of the evaporative cooling generator. Unlike the iron core, the thin sleeve cannot bear the weight of the rotor, so the arc-shaped slide plate cannot be used to wear the rotor, and the air gap is reduced to 24mm (traditional wear The installed air gap is 49mm), so the evaporative cooling generator rotor cannot be installed in the traditional way, that is, the arc-shaped slide plate is used to install the generator rotor

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