A magnetic gear with variable-width adjustable magnetic teeth

Abstract

The invention discloses a magnetic gear with variable width magnetic flux adjusting teeth. The magnetic gear comprises a driving wheel, a driven wheel and a magnetic flux adjusting grid which are coaxially installed in a stator housing, wherein the driving wheel and the driven wheel are installed at two ends of the magnetic flux adjusting grid respectively, and intervals exist; driving wheel permanent magnets are evenly distributed on the peripheral surface of the inner circle of the driving wheel at intervals; driven wheel permanent magnets are evenly distributed on the peripheral surface of the inner circle of the driven wheel at intervals; driven wheel magnetism gathering blocks are installed between the adjacent driving wheel and the driven wheel; the magnetic flux adjusting teeth are evenly distributed on the outer periphery of the inner circle of the magnetic flux adjusting grid at intervals, and the arc lengths of two ends of the axial part of the T-shaped magnetic flux adjusting teeth are different; an air-gap field magnetic field penetrates axial and radial air gaps to form a closed magnetic circuit; non-contact transmission is achieved through mutual action of the permanent magnets and the magnetic field. The magnetic gear is high in transmission efficiency, large in torque density of unit volume, high in reliability, free of abrasion caused by mechanical contact, free of being lubricated, and capable of achieving isolation of an input shaft and an output shaft, has the overload protection function and can be widely applied to the field of new energy resources such as wind power generation, electric vehicles and electric ships.

Description

technical field [0001] The invention relates to a magnetic gear, in particular to a magnetic gear with variable-width adjustable magnetic teeth, which can be widely used in new energy fields such as wind power generation, electric vehicles and ships. Background technique [0002] Traditional variable speed and variable torque widely use mechanical gearboxes, which have problems such as wear, noise, and mechanical fatigue. They have high requirements for lubrication and maintenance, and friction loss reduces system efficiency. In response to these inherent shortcomings of mechanical gears, magnetic gear technology has gained more and more attention in the past decade. [0003] In 2001, British scientists proposed a new magnetic gear structure based on magnetic field modulation technology, which overcomes the shortcomings of traditional magnetic gears, such as magnetic path difference, transmission torque and low efficiency, making magnetic gear technology a research hotspot i...

AI Technical Summary

Problems solved by technology

[0003] In 2001, British scientists proposed a new magnetic gear structure based on magnetic field modulation technology, which overcomes the shortcomings of traditional magnetic gears, such as magnetic path difference, torque transmission and low efficiency, making magnetic gear technology a research hotspot in recent years.

The torque transmitted by the magnetic gear is equivalent to that of the mechanical gear. Although it has the advantages of no lubrication, low noise and automatic overload protection, it also has the disadvantages of low torque density.

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