Small range magnetic transmission eccentric disc-shaped gear pair of novel horizontal magnetic field

Abstract

The invention discloses a small range magnetic transmission eccentric disc-shaped gear pair of a novel horizontal magnetic field, and the gear pair can be widely applied to wind power generation, electric vehicles, ship driving and other industrial transmission fields which need direct driving. The small range magnetic transmission eccentric disc-shaped gear pair of the novel horizontal magnetic field is characterized in that a magnetic transmission gear pair comprises a disc-shaped large disk on which 2p1 large disk permanent magnet bodies 1 are distributed and a disc-shaped planetary disk on which 2p2 planetary disk permanent magnetic bodies 2 are distributed; the range between the numbers of poles 2p1 and 2p2 is smaller; permanent magnet bodies on the two disks are coupled through an air gap horizontal magnetic filed between the two disks; an eccentric input shaft 3 which is sleeved with a bearing II 12 and a bearing III 13 connects the two disks with small range into an eccentric structure; the eccentric input shaft 3 drives a planetary turntable 5 to revolve around a rotary shaft; the planetary disk permanent magnetic bodies 2 which revolve eccentrically and the large disk permanent magnet bodies 1 are coupled through the magnetic field so as to drive the planetary turntable to reversely revolve around the axes of the planetary turntable, and the low-speed revolution of the planetary turntable is output through a hole-pin output structure.

Description

technical field [0001] The present invention is a new type of eccentric disk gear pair with less pole difference magnetic transmission in transverse magnetic field, and it is a variable speed transmission device that uses magnetic gear transmission technology to realize mutual conversion between high-speed low-torque mechanical energy and low-speed high-torque mechanical energy. 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 mech...

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.

These two major drawbacks lead to a relatively large amount of expensive rare earth materials consumed by magnetic gears based on magnetic field modulation technology

Images