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Axial tapered magnetic gear

A magnetic gear and axial magnetization technology, applied in the field of magnetic gear, can solve the problems of low torque density and low utilization rate of permanent magnets, and achieve the effects of high torque density, high utilization rate and improved stability

Inactive Publication Date: 2019-04-05
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional bevel magnetic gears are similar in structure to mechanical gears. Only part of the permanent magnets rather than all permanent magnets on the rotor participate in torque transmission each time. The torque density is very low and the utilization rate of permanent magnets is not high.

Method used

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  • Axial tapered magnetic gear
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Embodiment Construction

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention will be further elaborated below.

[0036] Such as Figure 1 to Figure 9 The shown axial conical magnetic gear includes a first rotor 100, a second rotor 200 and a magnetization ring 300 that is statically arranged between the first end of the first rotor 100 and the first end of the second rotor 200 . The first rotor 100 is a high-speed rotor. The first rotor 100 includes a first rotor core 110 and 4 pairs of first rotor permanent magnets 120 axially attached to the first end of the first rotor core 110. There are 4 pairs of first rotor permanent magnets 120 For permanent magnets, 4 pairs of adjacent first rotor permanent magnets 120 are magnetized in the axial direction, and the direction of axial magnetization between 4 adjacent pairs of first rotor permanent magnets 120 is opposite, and 4 pairs of adjacent first...

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Abstract

Disclosed is an axial tapered magnetic gear, including a first rotor, a second rotor and a magnetic modulating ring stationary disposed between the first end of the first rotor and the first end of the second rotor, wherein the magnetic modulating ring modulates the magnetic field generated by a first rotor permanent magnet into a series of spatial harmonic magnetic fields, and stable torque transmission can be achieved between the first rotor and the second rotor as long as the number of pole pairs of a second rotor permanent magnet is equal to the number of pole pairs of one of the spatial harmonic magnetic fields. The invention has the advantages that components such as rack and the like are omitted, the transmission is carried out by magnetic force, no lubrication is required, no wearis caused, and the mechanical stability is greatly improved; high torque density and high utilization ratio of permanent magnets are achieved; and the direction of the torque transmission can be changed.

Description

technical field [0001] The invention relates to the field of magnetic gears, in particular to an axial conical magnetic gear. Background technique [0002] Mechanical bevel gears are a transmission device with a wide range of applications. They are widely used in various types of mechanical equipment and are often used to change the transmission direction. However, mechanical bevel gears have obvious disadvantages, such as noise, wear, lubrication, etc. , these shortcomings are unavoidable for mechanical gears, because mechanical gears rely on the physical meshing of the driving wheel and the driven wheel to achieve torque transmission. The magnetic gear is a non-contact transmission device, and there are no problems such as noise, vibration, friction loss, and lubrication. Moreover, it can realize physical isolation between the input shaft and the output shaft, has overload self-protection capability, and has high safety and reliability. Traditional bevel magnetic gears a...

Claims

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Application Information

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IPC IPC(8): H02K49/10
CPCH02K49/102
Inventor 刘晓周一览黄守道
Owner HUNAN UNIV
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