Large high-speed electromotor whole structure

Abstract

A kind of large-scale high-speed machine complete texture, motor includes engine base, end cap, stator, axes, rotor and bearing, thereinto, the engine base is box structure, two dabbers or above are set on upper, lower, lest and right side board, wall of engine base is processed by steel plate whose thickness is 40mm+-3; the end cap is one-shot formed by steel plate whose thickness is 50mm+-3, contact face between end cap and engine base and bearing are smooth, they are sealed with each other; stator, the iron core of the stator fixed with three integral round steel plate whose thickness is 20mm+-3, the iron core of the stator is shaped with built-in craftwork; axes and rotor iron core are processed by thermal process; the bearing is end bracket type bearing, and possesses two floating type seals, outer possesses outer cover. Advantages are: optimization design makes resonance of motor and other electric property fulfill design requirement, and it can fulfill operating requirement of open-air or dust is big, box structure can increase rigidity of engine base, and decrease resonance of motor.

Description

technical field [0001] The invention relates to a motor structure, especially the overall structure of a large high-speed motor. Background technique [0002] With the rapid development of the national economy, electric power, machinery and other industries have higher and higher requirements for electric motors. From the analysis of the installation and use environment of the motor, the motor installed traditionally indoors can no longer meet the requirements of various working conditions, such as completely open air or heavy air dust. [0003] For motors whose use environment requires outdoor open-air places, the traditional protection class of IP44 motors cannot meet the requirements, but asynchronous motors with protection class IP55 should be used. Due to the very high speed of the two-pole motor (synchronous speed of 3000 rpm), the vibration and other problems brought to the motor have always been a key factor that plagues the development of high-speed asynchronous mo...

AI Technical Summary

Problems solved by technology

However, due to the distance between the bearing and the base of this kind of motor, the rotor shaft cannot be completely enclosed in the base, so its protection level is relatively low, and it can only be used in indoor environments.

[0004] In addition, due to the high speed of the two-pole motor, it is difficult for the commonly used welding rod shaft to meet the critical speed and centrifugal force requirements of the motor.

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