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Interaxial permanent magnet coupling mechanism

A permanent magnet coupling, shaft-to-shaft technology, applied in electromechanical devices, electromechanical transmission devices, electrical components, etc., can solve problems such as shortening equipment life, poor stability of electronic devices, and vibration, and reduce equipment accuracy requirements and installation. Difficulty, realization of soft-start function, effect of large misalignment

Inactive Publication Date: 2013-02-13
JIANGSU MAGNET VALLEY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complex and changeable operation of the system, it is difficult to accurately ensure the alignment of the two axes, and the equipment will vibrate after a period of operation, thereby accelerating wear and shortening the life of the equipment
[0004] 2. At present, frequency conversion and speed regulation are widely used in industrial sites. The output speed is controlled by controlling the motor. The price is relatively expensive, and the structure and operation are complicated. The power electronic devices of the frequency converter work in the switch state, thus generating a large number of harmonics and polluting the power grid. Affects communication, and the stability of electronic devices is not good, it is easy to age, the service life is not long, and the requirements for the environment are high, and there are great requirements for the ambient temperature, humidity and dust, so it is not suitable for working in harsh environments
In this type of coupler with existing structures, the direction of the magnetic field in the permanent magnets distributed along the circumference is usually perpendicular to the magnetic field action surface between the conductor rotor and the permanent magnet rotor, and the magnetic field distribution is scattered and the intensity is not high (the highest magnetic induction The strength can only reach 400~500mT), if you want to transmit a large torque, you need to make the structure larger, which limits the promotion of this technology

Method used

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Embodiment Construction

[0012] As shown in the figure, the inter-axis permanent magnet coupling mechanism of the present invention includes a permanent magnet rotor 1 and a conductor rotor 2 which are coaxially arranged, and permanent magnets 11 and conductors 21 are respectively distributed on the permanent magnet rotor and the conductor rotor; The rotor 1 and the conductor rotor 2 are both disc structures. The end faces of the permanent magnet rotor and the conductor rotor face each other to form an air gap 3; the permanent magnets 11 on the permanent magnet rotor 1 are distributed along the circumference, and the permanent magnets 11 are arranged between adjacent permanent magnets. Permeable magnet 12 made of permeable material; the magnetic pole direction of the permanent magnet 11 (that is, the connection direction of the S pole and the N pole) is located in the circumferential direction of the permanent magnet rotor 1, and the magnetic pole directions of adjacent permanent magnets 11 are opposite ...

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Abstract

The invention relates to a mechanism transmission device, in particular to an interaxial permanent magnet coupling mechanism used for transmitting torque between two axes of rotation. The mechanism comprises a permanent magnet rotor and a conductor rotor, which are arranged coaxially, wherein permanent magnets and conductors are distributed on the permanent magnet rotor and the conductor rotor respectively; the permanent magnet rotor and the conductor rotor are of a disc structure; the end faces of the permanent magnet rotor and the conductor rotor are opposite and form an air gap; the permanent magnets on the permanent magnet rotor are distributed along the circumference; magnetizers made of permeability magnetic materials are put between the adjacent permanent magnets; the magnetic pole directions (directions of lines connecting S poles and N poles) of the permanent magnets are in the circumferential direction of the permanent magnet rotor; and the magnetic pole directions of the adjacent permanent magnets are opposite or reverse. The mechanism can transmit bigger torque, can adjust the transmitted torque, has compact structure and low requirement for installation precision and is stable in transmission and adjustment.

Description

Technical field [0001] The invention relates to a mechanism transmission device, in particular to an inter-shaft permanent magnetic coupling mechanism for transmitting torque between two rotating shafts. Background technique [0002] For torque output and adjustment, there are many ways in the prior art, including: [0003] 1. The coupling mechanisms widely used in the industry are mostly rigid or hydraulic couplings, and the transmission torque and speed are not adjustable. Due to the complex operating conditions of the system, it is difficult to accurately ensure the alignment of the two shafts. After a period of operation, the equipment will vibrate, which will accelerate the wear and shorten the life of the equipment. [0004] 2. The current variable frequency speed regulation is widely used in industrial sites. It is expensive to control the output speed by controlling the motor, and the structure and operation are complicated. The power electronic devices of the frequency conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K51/00
Inventor 徐俊峰
Owner JIANGSU MAGNET VALLEY TECH
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