Monopole magnet rotating speed adjustable cage type magnetic coupling

Abstract

The invention relates to the field of mechanical transmission, and is a monopole magnet rotating speed adjustable cage type magnetic coupling. In the invention, the copper disc uses a cage type copperdisc, all the fan-shaped grooves generate fan-shaped ring current around, the generated eddy current loss is small and the transmission efficiency is high, the fan-shaped grooves of the cage type copper disc and the small bumps on the surface of the yoke are in interference fit, and the small bumps of the yoke modulate the magnetic field, thereby further increasing the electromagnetic torque of the coupler. The coupler provides three speed adjustment methods that the first is to adjust the air gap between the copper disc and the permanent magnet disc through an axial moving device, the secondis to change the rotation angle of the rotating permanent magnet by fixing the air gap to further adjust the head-on area between a conductor disc and the permanent magnet disc, and the third is to use the composite speed adjustment of the air gap between the two disks in axial movement and the rotating permanent magnet, so that the coupler can meet different degrees of speed adjustment requirements.

Description

technical field [0001] The invention relates to the field of mechanical transmission, and relates to a magnetic transmission and speed regulating device that realizes torque transmission through non-contact induction, in particular to a unipolar magnet rotary adjustable speed cage magnetic coupler. It can be used as a transmission device for torque transmission and speed regulation between a motor with a large vibration and a load. Background technique [0002] The magnetic coupling utilizes the mutual coupling of the permanent magnetic field and the induced magnetic field to transmit torque. Its unique non-contact transmission can effectively reduce the problems of noise, vibration, friction and wear in traditional mechanical transmission, and greatly improve the performance of the transmission device. In addition, it has the function of energy saving and environmental protection. Based on the above advantages, magnetic couplers have been widely used in chemical industry, m...

AI Technical Summary

Problems solved by technology

[0003] In Chinese patent 20171041913.7, a disc-type speed-regulating magnetic coupler based on bevel gear transmission and its speed-regulating method are disclosed. The solid copper disc used in this invention has a circular shape with the same number of poles as the permanent magnet on its surface during operation. Induced current, the eddy current loss generated is relatively large. The principle of speed regulation is to convert the axial displacement of the dial block into the rotation of the large bevel gear sleeve, and realize the rotation of the permanent magnet through the meshing transmission of the bevel gear, thereby changing the permanent magnet and the conductor disk. The average facing area and air gap spacing between them also changed the arrangement of N and S poles, thereby changing the air gap flux density to achieve speed regulation, but due to the limitation of the rotation angle of the magnet, its speed regulation range Small, can not meet the speed regulation requirements of different degrees

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