Method for adjusting out-of-roundness of rotor bracket for motor

Abstract

The invention discloses a method for adjusting out-of-round of a rotor bracket for a motor, which comprises the following steps of: 1) placing the rotor bracket to be adjusted on a horizontal supporting surface, determining the out-of-round position by measuring the inner diameter of the rotor bracket, and determining the directions of a long axis and a short axis of the out-of-round; (2) the I-shaped reinforcing ring is placed on the horizontal plane, two rows of jacking screws which are distributed in a staggered mode and provided with discs are installed on the periphery of an inner side plate of the I-shaped reinforcing ring, and the discs are adjusted to the outermost sides of the screws and fixed through nuts; 3) placing the rotor bracket on the inner side of the I-shaped reinforcing ring, and leveling; (4) adjusting the jacking screws in all directions, attaching the disc to the surface of the rotor bracket, and fixing the disc by using nuts on the outer side of the inner side plate; (5) axial supporting seats are evenly installed through threaded holes of an end cover plate of the rotor support, and (6) the rotor support is locked through a cross method, the inner diameter size of the rotor is detected till the rotor support is adjusted to be within the qualified range, and the problem that the inner diameter of the rotor support is out of roundness is solved.

Description

Technical field [0001] The present invention belongs to the field of generator production, and specifically, the present invention relates to a method of adjusting the rotor bracket of the motor. Background technique [0002] The set process of the MW motor is the core technology of the motor, and the quality of the rotor set gap is directly related to the air gap value of the motor, affecting the performance of the generator. It is guaranteed that the roundness of the rotor bracket is an important guarantee that is uniformly qualified. Due to the large diameter of the rotor bracket of the MW motor, the rotor bracket is in transportation, transportation, and assembly of the rotor brackets in the process of transportation, transportation and assembly. When the rotor bracket occurs, when the stator suit is loaded, due to the influence of the single-sided magnetic tension, the air gap is uneven and even a rotor. For a slightly lost rotor bracket, the practice of the conventional bra...

AI Technical Summary

Problems solved by technology

When the rotor bracket is out of round, when it is fitted with the stator, due to the influence of unilateral magnetic pull, the air gap will be uneven or even the stator and rotor will be attracted.

For the slightly out-of-round rotor bracket, the conventional bracket factory’s method is to adjust the levelness of the rotor bracket and the self-weight of the rotor bracket; but the deformation of the rotor bracket is large, and when it cannot be leveled by its own weight, it can only be scrapped. A rotor bracket weighs more than ten tons, and even more for high-power models, which seriously wastes material costs and production cycles

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