Small-range magnetic-conductive harmonic magnetic gear pair of axial planar magnetic field

Abstract

The invention relates to a small-range magnetic-conductive harmonic magnetic gear pair of an axial planar magnetic field, which can be widely applied to the industrial transmission fields of wind power generation, electric vehicles, ship driving and the like and is characterized in that the magnetic-conductive harmonic magnetic gear pair comprises a permanent-magnet stator plate with 2ps stator permanent magnets 2, a permanent-magnet rotor plate with 2pr rotor permanent magnets 6 and a magnetic-conductive wave rotor plate 3 of which the number of projecting-pole is Zb; the numbers of pole pairs ps and pr are positive integer pairs which are mutually relatively prime to form the low polar differential with a fixed difference; the permanent-magnet stator plate, the permanent-magnet rotor plate and the projecting-pole magnetic-conductive wave rotor plate 3 are sequentially coaxially distributed in the axial direction and are coupled with one another through an axial planar gas gap magnetic field, and mutually coupled in the projecting-pole straight shaft area of the projecting-pole magnetic-conductive wave rotor plate rotating at a high speed according to the principle that small-range heteropolar magnetic fields are mutually attracted, so as to drive the small-range magnetic gear pair to rotate at a low speed, so that the power variable-speed and variable-torque transmission is free of mechanical touch and friction.

Description

technical field [0001] The present invention is an axial planar magnetic field with less pole-difference magnetic permeance harmonic type magnetic gear pair, which utilizes the principle of less pole-difference to construct the magnetic permeance alternating harmonic type magnetic gear transmission technology to realize high-speed, small-torque mechanical energy and The variable-speed transmission device with low-speed and high-torque mechanical energy conversion can directly replace the conventional mechanical harmonic gear transmission transmission system, and is widely used in industrial robot servo drive, wind power generation, hydropower generation, electric vehicles, ship drive and other needs. Driven industrial transmission field. 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-spee...

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Problems solved by technology

[0004] Recently, one of the inventors of this case has also proposed a new type of eccentric magnetic gear pair (201110277432.3, 201120350893.4 and 201110355864.1, 201120444409.4) with a new type of transverse and radial magnetic field magnetic field coupling type eccentricity. Two kinds of permanent magnetic fields with different numbers of poles interact and couple each other to achieve the purpose of torque transmission and variable speed transmission. However, the concept of double permanent magnetic coupling variable speed with less pole difference must adopt eccentricity in its structure, and rare earth materials The strong permanent magnetic field increases the radial and axial load of the bearing, and the output mechanism is complicated and inefficient due to eccentricity, and the process also increases the difficulty of processing and assembly. What is more unbearable is the rigid vibration of the system caused by the eccentric structure, which is difficult Adapt to the high-speed operation of the reduction mechanism, which limits its application range

So far, no one at home and abroad has proposed to improve the eccentric structure of the magnetic gear pair with less range by using the principle of less range and combining the principle of mechanical harmonic gear transmission technology. Such technical research and structural invention are of great importance to engineering applications. practical significance

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