Magnetic suspension aerodynamic bearing

Abstract

The invention discloses a magnetic suspension aerodynamic bearing, which comprises a bearing body, tilting bearing bushes and electrostrictive blocks. The centers of the tilting bearing bushes are connected with the bearing body; two ends of the electrostrictive blocks are connected with the tilting bearing bushes and the bearing body; the electrostrictive blocks are connected with voltage regulator modules; electromagnet structures are symmetrically distributed in the bearing body; electromagnets are connected with current regulator modules for regulating a magnetic force; and an air gap sensor for detecting a gap between a rotor and each bearing bush is further arranged on the inner surface of the bearing. According to the magnetic suspension aerodynamic bearing provided by the invention, the bearing capacity of the bearing is greatly improved, the energy consumption is effectively reduced, meanwhile, the magnetic suspension aerodynamic bearing is used for carrying out work condition monitoring, fault diagnosis and on-line regulation in real time, and the intelligent management of the bearing is realized.

Description

technical field [0001] The invention belongs to the field of machinery and relates to a bearing, in particular to a magnetic suspension gas dynamic pressure bearing. Background technique [0002] Compared with traditional ball bearings, sliding bearings and oil film bearings, the currently known magnetic suspension bearings have the advantages of low mechanical wear, low noise, long life, no lubrication, and no oil pollution due to the absence of mechanical contact. However, magnetic suspension bearings also exist It has the disadvantages of high energy consumption and low bearing capacity. On the one hand, the known gas dynamic pressure bearings are prone to instability, and common air hammer vibration and eddy instability phenomena appear. On the other hand, aerodynamic pressure bearings often get stuck, locked or seized when they are started and at low speeds, which accelerates the failure of the bearings. In terms of operation monitoring, manual inspection is usually u...

AI Technical Summary

Problems solved by technology

[0002] Compared with traditional ball bearings, sliding bearings and oil film bearings, the currently known magnetic suspension bearings have the advantages of low mechanical wear, low noise, long life, no lubrication, and no oil pollution due to the absence of mechanical contact. However, magnetic suspension bearings also exist Disadvantages of high energy consumption and low bearing capacity

However, the known gas dynamic pressure bearings are prone to instability on the one hand, and the common phenomenon of air hammer vibration and eddy instability occurs.

On the other hand, aerodynamic pressure bearings often get stuck, locked or seized when they are started and at low speeds, which accelerates the failure of the bearings.

In terms of operation monitoring, manual inspection is usually used, and the problematic bearings cannot be found and dealt with in time, which has great disadvantages

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