A ball type permanent magnet coupling

Abstract

The invention discloses a ball permanent magnet coupler which comprises an outer rotating body and an inner rotating body. The outer rotating body is connected with an input shaft and the inner rotating body is connected with an output shaft. The outer rotating body comprises two opposite outer rotors, and the outer rotors are spoon-shaped. The inner rotating body comprises a spherical inner rotor, the inner rotor is wrapped between the two outer rotors. A plurality of outer rotating magnets are embedded in the arc-shaped inner surface of the outer rotors, a plurality of inner rotating magnets are embedded in the spherical surface of the inner rotor, and the outer rotating magnets and the inner rotating magnets attract each other in magnetic force. The outer rotating body and the inner rotating body of the coupler are spherical in shape, and the magnets are arranged on the spherical surfaces of the outer rotors and the inner rotor so that the magnetic field is distributed along the radial direction of the sphere, and the coupler has the remarkable characteristics of large transmission torque, non-coaxial transmission, no axial force and stable transmission.

Description

technical field [0001] The disclosure belongs to the technical field of mechanical transmission couplings, and in particular relates to a ball-type permanent magnet coupling. Background technique [0002] Some industrial production requires non-contact transmission to transmit torque, such as toxic and harmful chemical production, environmental industry and semiconductor industry. The most common non-contact transmission is the magnetic coupling, which is characterized by: it can realize complete sealing and isolation between the input end and the output end; it can limit the torque and realize overload protection; it can realize the soft start of the machine; it has small vibration and small friction. [0003] The predecessors have designed magnetic couplings with different structures. For example, the patent application number 201210434166.5 discloses a high-performance asynchronous disc magnetic coupling. The magnetic field is distributed along the axial direction, and it...

AI Technical Summary

Problems solved by technology

[0003] The predecessors have designed magnetic couplings with different structures. For example, the patent application number 201210434166.5 discloses a high-performance asynchronous disc magnetic coupling. The magnetic field is distributed along the axial direction, and its transmission torque is small, which cannot be very Coaxial transmission, large axial force and unstable transmission; the patent application number 201020181438.1 discloses a radial permanent magnet magnetic coupling, the magnetic field is distributed along the radial direction, although the axial force is small, the installation accuracy is high And it cannot be non-coaxial transmission; the patent application number 201720671721.4 discloses a magnetic coupling that can realize non-coaxial transmission, but only a universal joint is connected to the magnetic coupling, and its transmission torque is also Small, large axial force, unstable transmission

[0004] In summary, the inventors found that the existing magnetic couplings have the disadvantages of small transmission torque, coaxial transmission, or large axial force and unstable transmission, which limits the scope of use of magnetic couplings and develop

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