A method for pulling through the core of an extreme short-axis shoulder-pole beam motor

Abstract

The invention provides a limit short-axis type core pulling and penetrating method for a shoulder-pole beam motor. The method comprises the following steps of stuffing a buffer isolation plate betweena motor stator and a motor rotor, and hoisting the entire motor to a core pulling site; installing and connecting a short shaft with a shaft coupling; selecting one limit point at the core pulling site, wherein the limit point is a reference for the placing position of the stator, the short shaft of the rotor gets close to a wall but does not press against the wall, and the distance between the limit point to another wall is much larger than the sum of the length of the stator, the length of the rotor and the length of the short shaft; integrally hoisting and moving the motor to the positionof the limit point; hoisting the motor by using a shoulder-pole beam of a shop traveler through adopting the tertiary core pulling mode and moving the motor towards a direction opposite to the limit point, wherein the position of one hoisting rope closer to a rotor coupling, one point in the short shaft and a position closer to the magnetic pole of the rotor are sequentially adopted as hanging points for continuously and horizontally moving the rotor in the relay mode. Therefore, the rotor is communicated with the short shaft to move together out of the stator, so that the core pulling is completed.

Description

technical field [0001] The invention belongs to the technical field of installation and maintenance of large motors, and in particular relates to a method for pulling through a core of an extreme short-axis pole beam motor. Background technique [0002] In the dismantling process of the large main drive motor, the method of extracting (threading) the core of the main motor is the most critical step, which is the most difficult, time-consuming and labor-intensive step. There are many methods for extracting (piercing) the core of the main motor of the rolling mill, but they are basically not applicable to the rough rolling motor of the hot rolling production line. The reason is that the rough rolling motor room is usually arranged in a place without a large crane, the space is narrow, and there are many unfavorable factors such as the lack of available sites for motor pumping (threading) cores. At present, for this type of motor, the usual construction method of core pumping ...

AI Technical Summary

Problems solved by technology

[0003] To sum up, although the driving in the workshop meets the requirements for motor core-piercing and hoisting, but the workshop space is narrow and the available positions for motor core-pumping (piercing) are lacking, the existing technology still has many deficiencies.

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