A single flat disc permanent magnet eddy current coupling with fixed end face

Abstract

The invention discloses a single-tray-type permanent magnet eddy-current coupler with a fixed end surface, and belongs to the technical field of permanent magnet eddy-current transmission. The single-tray-type permanent magnet eddy-current coupler with the fixed end surface can automatically guarantee concentric positioning in the processes of installation and operation, lowers installation difficulty, lightens the workload, can directly transmit the gravity and external acting force applied to the coupler, and axial repulsive force between a driving rotor and a driven rotor to a front-end positioning machine seat of a motor in the operation process, and prevents a rotary shaft system of the motor from bearing additional external force. The single-tray-type permanent magnet eddy-current coupler with the fixed end surface comprises the driving rotor, a driven rotor, an end surface positioning seat and an end cover shaft, wherein the driving rotor is composed of a driving rotor shaft, a magnetic rotor disc and a permanent magnet layer, the driven rotor is composed of a driven rotor body, a sliding shaft sleeve, a thrust spring, an eddy-current rotor disc and an eddy-current ring, the end surface positioning seat is composed of an end surface positioning disc and a positioning bearing seat fixed to the end surface positioning disc, and the end cover shaft is composed of an end cover and a driven shaft or a driven shaft sleeve fixed in the middle of the end cover.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet eddy current transmission, in particular to a single-flat disc permanent magnet eddy current shaft coupling with fixed end faces. Background technique [0002] The basic working principle of permanent magnet eddy current transmission technology is: when the permanent magnet rotor and the eddy current ring rotor make relative rotation motion, the permanent magnets arranged alternately in the direction of magnetic poles on the permanent magnet rotor will generate alternating currents in the eddy current ring made of conductive materials. The magnetic field is changed, and then an alternating eddy current is induced in it, and the eddy current generates an induced magnetic field in the eddy current ring, and the induced magnetic field interacts with the constant magnetic field on the permanent magnet rotor, so that the magnetic field between the two rotors Generate coupling torque, so as to ...

AI Technical Summary

Problems solved by technology

[0003] However, the existing patented technology of permanent magnet eddy current transmission generally does not pay enough attention to the positioning and connection methods of the permanent magnet rotor and the eddy current ring rotor. The existing flat disc permanent magnet eddy current coupling products usually use one of the following two methods One is to realize the installation and positioning of the two rotors: one is to directly set the rotor body on the prime mover or the drive shaft of the load by using the connecting sleeve; the other is to set up special brackets to support the two rotors separately, and then use Coupling component that connects the drive shaft of the prime mover and load with the shafts of the two rotors

These two connection methods have obvious disadvantages: the former connection method applies all the weight and force of the rotor directly on the prime mover or the drive shaft of the load, especially when the pulley or gear is directly installed. The radial force greatly increases the force of the prime mover or the load-driven shaft supporting bearing, which leads to poor working conditions, increased vibration and noise, and reduced effective working life; the latter connection method increases a Or two sets of brackets make it more difficult to ensure the concentric positioning of the rotating shaft between the prime mover, the load, and the bracket, which brings great inconvenience to the installation operation, and also brings more excitation sources and uncertain harmful factors to the system during operation.

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