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Magnetic gear and magnetic transmission device

A magnetic gear and magnetic transmission technology, applied in the field of magnetic transmission, can solve the problem of high cost of magnetic gears, and achieve the effects of large transmission ratio, weight reduction, and cost reduction

Inactive Publication Date: 2012-05-09
东元总合科技(杭州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to solve the problem of high cost of magnetic teeth, provide a new magnetic gear without reducing the torque density of the magnetic gear, and at the same time, provide a high transmission ratio, relatively high torque density magnetic drives for transmission in, for example, megawatt-scale wind turbines

Method used

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  • Magnetic gear and magnetic transmission device

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Embodiment Construction

[0026] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0027] The gist of the present invention is to reduce the cost of the magnetic gear as much as possible under the condition that the torque density is equivalent, and to provide a new magnetic gear. Density magnetic drives for transmission in, for example, megawatt-scale wind turbines.

[0028] Such as figure 1 , figure 2 As shown, the existing magnetic gear includes a first rotor or called an inner rotor 1, and a second rotor or called an outer rotor 2. The outer surface of the inner rotor 1 is provided with a first group of permanent magnets 11, which Supported by the support part 12 made of magnetic material, the inner surface of the outer rotor 2 is provided with a second group of permanent magnets 21, which is supported by the support pa...

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Abstract

The invention provides a new magnetic gear and a magnetic transmission device based on the magnetic gear, which are used for solving the problem of higher cost of the existing magnetic gear without lowering the torque density of the magnetic gear. For the magnetic gear, permanent magnets of the inner and outer rotors of the magnetic gear are separated by a magnetic material and are tangentially magnetized, and the supporting parts of the inner and outer rotors are made from a non-magnetic material. In the invention, as magnetic fields are converged to be enhanced at opposite sides of two groups of permanent magnets, the number of the permanent magnets is reduced by one half and the cost of the magnetic gear is lowered by one quarter in the case of equal torque density, and meanwhile the magnetic transmission device can obtain relatively higher torque density as well as a large transmission ratio by virtue of cycloidal motion between the first group of permanent magnets and the second group of permanent magnets.

Description

technical field [0001] The invention relates to the technical field of magnetic transmission, more specifically, to a magnetic gear and a magnetic transmission device using the magnetic gear. Background technique [0002] Mechanical gear is a common mechanism used for transmission. It has the advantages of high transmission efficiency and high torque density. Through long-term development and improvement, mechanical gears and the use of mechanical gears for transmission have become very mature. However, due to its own characteristics, mechanical gears have relatively large vibrations and noises, need to be used under lubricated conditions, and require regular maintenance and other problems that cannot be overcome by themselves. With the advancement of science and technology, people's requirements for the transmission system are getting higher and higher. The performance of mechanical gears has been greatly improved by selecting high-performance materials, finishing the tooth...

Claims

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Application Information

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IPC IPC(8): H02K51/00
Inventor 黄越张映明
Owner 东元总合科技(杭州)有限公司
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