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Magnetic field modulation type magnetic gear

A magnetic gear and magnetic field modulation technology, applied in the direction of electrical components, electromechanical devices, electromechanical transmission devices, etc., can solve the problems of increased volume and insufficient mechanical strength, etc., to reduce torque ripple, increase magnetic concentration effect, and optimize torque pulsating effect

Active Publication Date: 2011-09-21
NINGBO TIANAN MAGNETIC TRANSMISSION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current concentric magnetic gear generally adopts the method of rotating the inner and outer rotors and fixing the intermediate magnetic ring. The cup-shaped rotor is fixed by a unilateral bearing, and the mechanical strength is insufficient.
Secondly, the outer rotor needs an additional frame as a stator, which increases the volume

Method used

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  • Magnetic field modulation type magnetic gear
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  • Magnetic field modulation type magnetic gear

Examples

Experimental program
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Effect test

Embodiment Construction

[0012] The figure includes outer stator 1, inner rotor 2, magnetic adjustment ring 3, inner rotor permanent magnet 4, inner rotor core 5, inner rotor shaft 6, outer stator core 7, outer stator permanent magnet 8, outer stator front end plate 9, outer Stator rear end plate 10, magnetic ring core block 11, magnetic ring epoxy block 12, magnetic ring front plate 13, magnetic ring rear end plate 14, magnetic ring front bearing 15, magnetic ring rear bearing 16, Inner rotor front bearing 17, inner rotor rear bearing 18.

[0013] Such as figure 1 As shown, the outer stator 1 includes the outer stator core 7, and the outer stator core 7 is provided with 2N 2 (N 2 >=1) One piece of outer stator permanent magnet 8, and the adjacent permanent magnets have different polarities, and the outer stator is pressed and fixed by the outer stator front end cover 9 and the outer stator rear end cover 10. Such as figure 2 As shown, the inner rotor 2 includes the inner rotor core 4, and the in...

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PUM

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Abstract

The invention discloses a magnetic field modulation type magnetic gear which is characterized by comprising an outer stator and an inner rotor, wherein an annular cavity is formed between the outer stator and the inner rotor, an adjustable magnet ring is arranged in the annular cavity, the outer stator consists of an outer stator iron core and 2N2 permanent magnets, and the polarities of the adjacent permanent magnets are opposite; the inner rotor consists of an inner rotor iron core and 2N1 permanent magnets, and the polarities of the adjacent permanent magnets are opposite; the inner rotor and the outer stator are connected through an output shaft; and the adjustable magnet ring is formed by arranging N1+N2 iron core blocks and N1+N2 non magnetic-conducting blocks into a ring shape in astaggered mode, and the adjustable magnet ring is connected with the output shaft of the adjustable magnet ring. Compared with the prior art, the magnetic gear provided by the invention has the following obvious protrude substantiality characteristic and outstanding advantages: the mechanical strength is increased, the volume is reduced, and the torque ripple is optimized.

Description

technical field [0001] The invention relates to the field of power transmission equipment manufacturing, in particular to a magnetic field modulation type magnetic gear. Background technique [0002] The concentric magnetic gear of conventional structure is composed of three parts, the inner rotor, the magnetic adjustment ring and the outer rotor, in which permanent magnets are placed on the outer surface of the inner rotor and the inner surface of the outer rotor, and the magnetic adjustment ring is composed of some uniformly distributed in the circumferential direction composed of ferromagnetic materials. In order to increase the overall mechanical strength, the gap between the ferromagnets is generally filled with non-magnetic epoxy resin material. When the gear is in operation, the magnetic adjusting ring is fixed to modulate the magnetic field generated by the permanent magnets of the inner and outer rotors. By adjusting the number of ferromagnets on the magnetic ring...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K51/00
Inventor 江建中
Owner NINGBO TIANAN MAGNETIC TRANSMISSION TECH CO LTD
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