Asynchronous inducting type less-polarity-difference magnetic driving eccentric gear pair in transverse magnetic field

Abstract

The invention relates to an asynchronous inducting type less-polarity-difference magnetic driving eccentric gear pair in a transverse magnetic field, which is widely applied to the fields of wind power generation, electric automobile, ship driving and other industry transmissions requiring direct driving. The asynchronous inducting type less-polarity-difference magnetic driving eccentric gear pair in the transverse magnetic field is characterized in that a pair of magnetic driving gear pairs in the transverse magnetic field are composed of a disc-shaped big magnetic plate and a disc-shaped planet gear plate, wherein 2p1 big magnetic plate permanent magnets 1 are distributed on the disc-shaped big magnetic plate; the disc-shaped planet gear plate is provided with planet gear conductor plates 2 for Z2 conductors; the count difference between the 2p1 and Z2 is smaller; two gear plates with less polarity difference are connected into an eccentric structure through an eccentric input shaft 3 mounted with a second bearing 12 and a third bearing 13; the planet gear conductor plates 2 are driven to revolve around an axis at a rotating speed n1 by the eccentric input shaft 3; and the Z2 conductors on the planet gear conductor plates 2 are moved relative to an air-gap permanent magnetic field, the current i2 is induced in the conductors, and a revolving moment is generated under the action of the air-gap permanent magnetic field, so that the planet gear plate is driven to slowly revolve around an own axis at the rotating speed n2 along a reverse direction and the revolution is outputted through a pore pin type output structure.

Description

technical field [0001] The present invention is an asynchronous induction type magnetic transmission eccentric gear pair with a transverse magnetic field. Instead of the conventional mechanical gear transmission transmission system, it is widely used in wind power generation, hydropower generation, electric vehicles, ship drive and other industrial transmission fields that require direct drive. Background technique [0002] In many transmission fields of industrial applications, it is often necessary to realize the mutual conversion of low-speed, high-torque mechanical energy and high-speed, low-torque mechanical energy. High-speed mechanical kinetic energy for power generation, electric vehicles and submarine drives need to convert the high-speed mechanical power of the drive motor into mechanical power with very low speed and high torque. According to the existing conventional design technology, the extremely low speed and high torque will make the motor bulky, increase t...

AI Technical Summary

Problems solved by technology

[0004] The above magnetic gears designed based on the magnetic field modulation technology have two fatal deficiencies in terms of theoretical principles and structural solutions: First, theoretically, the number of poles (teeth) of the magnetic grid core that plays the role of magnetic field modulation must meet the following requirements: As a result, less than half of the permanent magnets of the magnetic gear are in the working state of mutual magnetic field coupling at any time during the operation of the magnetic gear, and more than half of the permanent magnet poles are in the idle non-coupling state, that is, the utilization rate of rare earth permanent magnets Theoretically, it is lower than 50%; secondly, from a structural point of view, adding a magnetic grid core will inevitably make the magnetic gear pair have two air gaps, which will inevitably consume a large amount of magnetomotive force of the rare earth permanent magnet. According to the rare earth magnetic material It can be seen that if the thickness of the magnetic poles is not thickened, the magnetic flux of the permanent magnets in the coupled working state will inevitably decrease, thereby affecting the magnitude of the transmitted torque.

[0005] In the near future, the inventor of this case also proposed a new type of eccentric disc gear pair (201110277432.3 and 201120350893.4) ​​with a new type of transverse magnetic field with less pole difference magnetic transmission. This magnetic gear pair uses two different pole numbers on the two transmission wheel pairs The permanent magnetic field interacts and couples with each other to achieve the purpose of torque transmission and variable speed transmission. In fact, this is a concept of synchronous drive variable speed similar to the magnetic field of a synchronous motor. Up to now, no one at home and abroad has proposed the use of AC asynchronous The inductive principle of the motor is used to improve the working principle and specific application structure of the eccentric gear pair in the magnetic transmission with less extreme difference, and the invention of such a technology and structure has important practical significance for reducing the consumption of expensive rare earth permanent magnet materials

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