Shafting installation method of motor with rotor without support by bearing

Abstract

The invention discloses a shafting installation method of a motor with a rotor without support by a bearing. A shaft lift-up limiting protector is arranged between the rotor and a motor end cap, positions of the rotor in the horizontal, vertical and axial directions relative to a measurement reflection surface are determined before leaving the factory, and serve as factory reference values, the motor end cap is then installed, after that the motor leaves the factory, distance between the rotor and the measurement reference surface is adjusted by a horizontal position adjusting device, a vertical position adjusting device and an axial position adjusting device till an error between a measurement value and the corresponding factory reference value satisfies the requirement, and the shaftingis installed and aligned. Via the installation method, air gap of the enclosed bearing-free motor can be detected and adjusted, and the shafting can be aligned and installed.

Description

technical field [0001] The invention belongs to the technical field of structural design and electromagnetic design of electric motors, and specifically relates to the shafting installation technology of integrated bearingless motors with large and medium-sized motor end covers, which is suitable for vibration and noise in shipbuilding industry, industrial and mining industry, petrochemical industry and national defense equipment, etc. Occasions with high index requirements. Background technique [0002] A rotating electrical machine mainly includes a stator, a rotor, a bearing, a motor end cover and a machine base, and the rotor is supported by the bearing to realize the function of rotation. The uniformity of the air gap between the stator and the rotor has a great influence on the operating characteristics and safety of the motor. Therefore, air gap adjustment is generally required in the manufacture of large and medium-sized motors, and the motors in different applicatio...

AI Technical Summary

Problems solved by technology

And the motor is relatively closed, so it is inconvenient to directly measure the stator and rotor air gap

[0004] At this time, it is difficult to adjust the air gap of the stator and rotor during the manufacture and factory installation of the motor

Especially when the motor end cover of the motor is inconvenient to open or open the window, the air gap between the stator and the rotor cannot be measured, the air gap cannot be measured and adjusted, and the operation safety requirements of the motor cannot be guaranteed or the electrical performance of the motor will be reduced. It brings great difficulty to the shaft installation

[0005] In view of the above situation and current situation, it is the key to solve the problem to study a motor air gap detection and adjustment and shaft installation method that does not have bearings and cannot directly measure the air gap of the stator and rotor after leaving the factory.

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