Magnetic field modulation magnetic gear

A magnetic gear and magnetic field modulation technology, applied in electrical components, electromechanical devices, electromechanical transmission devices, etc., can solve problems such as low torque density, and achieve the effect of simplifying structure, reducing cost, and improving reliability

Inactive Publication Date: 2008-09-17
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low torque density of existing traditional magnetic gears, provide a magnetic field modulation type magnetic gear, save the amount of permanent magnets, improve reliability, simplify structure and reduce cost

Method used

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

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Experimental program
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Embodiment Construction

[0014] The figure includes housing 1, cup-shaped outer rotor sleeve 2, outer rotor output shaft 3, outer rotor core 4, outer rotor permanent magnet 5, magnetism adjusting ring 6, 2N 1 Inner rotor permanent magnet 7, inner rotor iron core 8, outer rotor bearing 9, inner rotor bearing 10, inner rotor output shaft 11, outer rotor 12, inner rotor 13, magnet adjustment core block 14, epoxy block 15 and screw 16. Outer rotor 12 consists of cup-shaped outer rotor sleeve 2, outer rotor core 4 and N 2 Consists of one outer rotor permanent magnet 5, the outer rotor permanent magnet 5 is embedded in the outer rotor core 4, all the outer rotor permanent magnets 5 have the same polarity, the outer rotor 12 is fixed on the outer rotor output shaft 3, and the outer rotor output shaft 3 passes through the outer rotor The bearing 9 is installed on the housing 1; the magnetic adjusting ring 6 is composed of N 1 +N 2 Block tuning core block 14 and N 1 +N 2 An epoxy block 15 is formed, and th...

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PUM

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Abstract

The present invention provides a magnetic field modulated magnetic gear, including a casing, an outer rotor and an inner rotor mounted in the casing chamber, the inner rotor is composed of an inner rotor core, 2N1 permanent magnets, and the polarity of the adjacent permanent magnets are different, the inner rotor is mounted on the output shaft of the inner rotor; the outer rotor is composed of a cup type sleeve, an outer rotor core, N2 permanent magnets, and the polarity of all N2 permanent magnets are identical, the cup type outer rotor is mounted on the output shaft of the outer rotor; the magnetic field regulating ring is composed of N1+N2 core blocks and N1+N2 epoxy blocks, the magnetic field regulating ring is fixed on the end plate of the casing; the magnetic gear has two layers air gap, the inner air gap is between the inner rotor and the magnetic field regulating ring, the outer air gap is between the outer rotor and the magnetic field regulating ring. The invention has advantages of high torque transmitted per volume; and the outer rotor adopts a staggered distribution structure of the permanent magnets and the stator core, saving quantity of the permanent magnets, improving the credibility, simplifying the structure, reducing the cost.

Description

technical field [0001] The invention relates to a magnetic gear, in particular to a magnetic field modulation magnetic gear. Background technique [0002] Compared with mechanical gears, magnetic gears have the following advantages: 1) It can reduce mechanical noise and vibration; 2) Magnetic gears do not require lubrication, so they can reduce maintenance and increase system reliability; 3) Magnetic gears have accurate peak torque Transmission capacity, when the load is seriously overloaded, it has overload protection capability; 4) The torque input and output are non-contact, which has great advantages in the drive of toxic and harmful fluid pumps; 5) Due to the realization It ensures non-contact torque transmission and reduces mechanical loss, so the efficiency of magnetic gears is higher than that of mechanical gears; 6) The permanent magnets of magnetic gears are directly installed on the rotor surface, unlike mechanical gears, which require finishing and heat treatment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K51/00
Inventor 江建中刘新华章跃进龚宇汪信尧
Owner SHANGHAI UNIV
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