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A flexible reed axial protection bearing for magnetic bearings

A technology for protecting bearings and magnetic bearings, applied to bearings, shafts and bearings, shafts, etc., can solve the problems of mechanical damage to bearing cages, protection of bearings stuck and stopped, and bearing expansion, so as to improve precision, improve service life, The effect of improving reliability

Active Publication Date: 2020-09-29
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

May cause mechanical damage to the bearing cage
Make the rotor continue to collide with other components inside the equipment, such as magnetic bearings and motor stators, resulting in scrapped equipment
Or due to frictional heat, the balls and bearings will expand, resulting in the protection of the bearings stuck and stalled
In order to overcome the congenital defect of the ball type protection bearing, the present invention designs a flexible reed type axial protection bearing structure, which has no ball bearings and avoids melting due to the large amount of heat generated by the friction of the rotor falling at high speed. Welding phenomenon, which in turn causes axial impact load and damages the rotor

Method used

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  • A flexible reed axial protection bearing for magnetic bearings
  • A flexible reed axial protection bearing for magnetic bearings
  • A flexible reed axial protection bearing for magnetic bearings

Examples

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Embodiment 1

[0058] In order to illustrate the force analysis of the segmented open flexible segment radial protection bearing designed by the present invention, a high-speed magnetic levitation permanent magnet motor (March 2017, the 3rd issue of volume 25, "Optical Precision Engineering", high-speed magnetic levitation permanent magnet motor Magneto Multiphysics Analysis and Rotor Loss Optimization.) The way to protect the bearing installation. In the overall structure of the motor, it is introduced that the radial protection bearing is installed on the left side of the rotor, and the axial protection bearing is on the right side. In order to reflect the application of the radial protection bearing 30 of the present invention, please refer to Figure 1A with Figure 1B shown. A radial protective bearing 30 is installed on the left end of the rotor 10, and an A axial protective bearing 70 and a B axial protective bearing 80 are installed on the right end of the rotor 10, and the A axial...

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PUM

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Abstract

The invention discloses a flexible reed axial protection bearing for a magnetic bearing. The bearing is externally provided with an end cover A (70A), a end cover B (70B) and a center through hole A (70C); and a reed A (1), a reed B (2), a reed C(3) and a reed D (4) are arranged inside the bearing. The axial protection bearing is designed by combining the reed and the through hole, when a rotor isdestabilized to generate huge impact, a large amount of kinetic energy of the rotor can be absorbed by utilizing the elastic deformation of the reed, and other parts in a high-speed rotating magneticsuspension mechanism are not damaged.

Description

technical field [0001] The invention relates to an axial protection bearing, more particularly, to a flexible reed axial protection bearing for magnetic bearings. Background technique [0002] In recent years, with the advancement of magnetic levitation technology, high-speed magnetic levitation motors have developed rapidly. They have the advantages of high speed, high power density, small size, fast response, and can directly drive loads. They are widely used in high-speed magnetic levitation blowers, magnetic levitation ultra-high vacuum molecules, etc. High-speed rotating equipment such as pumps, magnetic levitation energy storage flywheels and magnetic levitation torque gyroscopes. The bearing capacity of the magnetic bearing is determined by design and is limited by its size. If the actual load exceeds this bearing capacity, or the support of the magnetic bearing fails for some reason, the rotor will no longer be in a suspended state and will be separated from the mech...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16C32/04H02K7/09
CPCF16C32/0402F16C2204/52F16C2380/26H02K7/09
Inventor 王坤王韵涵郑世强
Owner BEIHANG UNIV
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