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Synchronous permanent magnet coupler

A permanent magnet coupling, permanent magnet layer technology, applied in the direction of permanent magnet clutch/brake, electric brake/clutch, electrical components, etc., can solve the problems of unsuitable synchronous permanent magnet coupling and unreliable protection.

Pending Publication Date: 2017-09-15
JIANGSU MAGNET VALLEY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] For this reason, the technical problem to be solved by the present invention is that there is no overload protection device for synchronous permanent magnet couplings in the prior art, but the overload protection device for asynchronous eddy current couplings cannot be applied to synchronous permanent magnetic couplings, and it will The problem of unreliable protection due to the sharp drop of thrust when the distance increases, thus providing a synchronous permanent magnet coupling with effective automatic overload protection

Method used

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  • Synchronous permanent magnet coupler
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Examples

Experimental program
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Embodiment 1

[0075] refer to Figure 1-6 ,in, figure 1 Shown is the synchronous permanent magnet coupling described in this embodiment, which includes a driving rotor 3 and a driven rotor 2, the driving rotor 3 is connected to the driving shaft, and a first permanent magnet layer 6 is arranged on it; the driven rotor 2 It is connected with the driven shaft, and the second permanent magnet layer 5 which forms magnetic cooperation with the first permanent magnet layer 6 is arranged on it, and the permanent magnet layer 5 adopted by the first permanent magnet layer 6 and the second permanent magnet layer 5 The magnetic material is high-performance magnetic steel; there is an air gap between the two permanent magnetic layers; the driven rotor 2 and the driving rotor 3 are synchronously driven.

[0076] It also includes a roller cam mechanism 7, which is arranged between the driving rotor 3 and the driven rotor 2; the driven rotor 2 is connected to the driven shaft in a circumferentially fixed...

Embodiment 2

[0085]In this embodiment, on the basis of the above embodiments, a blocking portion 9 is provided on the outer surface of the first bushing, such as figure 1 , 2 As shown, when the driven rotor 2 pushes away from the position where it interacts magnetically with the driving rotor 3, the blocking portion 9 is against the free end 121 of the driven rotor 2, and the driving rotor The distance between 3 and the driven rotor 2 is enough to break away from the coupling, while also preventing the driven rotor 2 from moving outward without restriction.

[0086] In fact, the blocking portion 9 can be set at a position further away from the second shaft sleeve. At this time, when the driven rotor 2 pushes away from the position where it interacts magnetically with the driving rotor 3, the driven rotor 2 2 moves in the axial direction, and the moving distance is the farthest until its free end 121 abuts against the blocking portion 9, that is, it prevents the driven rotor 2 from moving ...

Embodiment 3

[0088] As an alternate example, such as Figure 5 , 6 As shown, in this embodiment, on the basis of the above-mentioned embodiments, the driven rotor 2 and the driven shaft are circumferentially fixed and axially slidably connected instead of the driving rotor 3 being circumferentially fixed and axially slidable with the driving shaft. Axially slidably connected; the active rotor 3 is replaced with radially extending first disk-shaped inner and outer surfaces, and the first permanent magnet layer 6 is arranged on the first disk-shaped inner surface, so The driven rotor 2 has a second disk-shaped inner and outer surface extending radially, the second permanent magnet layer 5 is arranged on the second disk-shaped inner surface, and the first permanent magnet layer 6 and The magnetic poles of the second permanent magnet layer 5 are arranged in a matching manner, that is, a disc-type synchronous permanent magnet coupling. The magnetic circuits of the driving rotor 3 and the driv...

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PUM

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Abstract

The invention relates to a coupler, and particularly relates to a safe synchronous permanent magnet coupler comprising an active rotor and a driven rotor. The driven rotor and the active rotor perform synchronous transmission. The safe synchronous permanent magnet coupler also comprises a differential push-off reset device which is arranged between the active rotor and the driven rotor. When the active rotor and the driven rotor slip due to overload, the differential push-off reset device is used for enabling the active rotor and the driven rotor to automatically release the magnetic coupling transmission relationship so as to ensure the safety of the synchronous permanent magnet coupler and equipment. The technical problem to be solved is magnetic steel demagnetization caused by eddy heat because of the fact that the synchronous permanent magnet coupler in the prior art have no overload automatic protection device so as to truly have the overload automatic protection function, and the synchronous permanent magnet coupler is expanded to the safe coupler from the range of the elastic coupler, which has important meaning for the occasion requiring overload automatic protection.

Description

technical field [0001] The invention relates to a shaft coupling, in particular to a safe synchronous permanent magnet coupling. Background technique [0002] Couplings are mechanical parts used to connect two shafts (driving shaft and driven shaft) in different mechanisms to make them rotate together to transmit torque and speed. In high-speed and heavy-duty power transmission, some couplings also have the functions of buffering, damping and improving the dynamic performance of the shafting. [0003] Common couplings include rigid couplings, elastic couplings and safety couplings. Among them, the safety coupling is also called the torque limiter. When the required torque exceeds the set value due to overload or mechanical failure, it limits the torque transmitted by the transmission system in the form of slipping, and restores the connection when the overload situation disappears. Mechanical damage is prevented and costly downtime is avoided. [0004] At present, the mai...

Claims

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Application Information

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IPC IPC(8): H02K49/10H02H7/085
CPCH02H7/0855H02H7/0856H02K49/106
Inventor 徐俊峰牟红刚
Owner JIANGSU MAGNET VALLEY TECH