Double-tray-type permanent magnet eddy-current coupler with fixed end surface

Abstract

The invention discloses a double-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 double-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 permanent magnet eddy-current coupler to a stator of a motor in the operation process, and prevents a rotary shaft system of the motor from bearing additional external force. The double-tray-type permanent magnet eddy-current coupler with the fixed end surface comprises a 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 body, an inner permanent magnet layer and an outer permanent magnet layer, the driven rotor is composed of a driven rotor body, an inner rotor disc, a plurality of rotor disc connecting plates, an inner eddy-current ring and an outer 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, a step-type stopping edge is arranged on the outer end surface of 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 double-flat disc permanent magnet eddy current 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 alternating magnetic field induces an alternating eddy current 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. The coupling torque is generated between the rotors, so as to achieve the function of transmitting moti...

AI Technical Summary

Problems solved by technology

[0003] However, the existing patented permanent magnet eddy current transmission technology 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 is usually realized by the following two methods The two rotors are installed and positioned: one is to directly set the two rotors on the prime mover or the drive shaft of the load by using the connecting sleeve; the other is to set up a special bracket to support the two rotors separately, and then use the 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 on the supporting bearing of the prime mover or the driving shaft of the load, resulting in poor working conditions, increased vibration noise, and reduced effective working life; the latter connection method increases the One 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 work, and also brings more excitation sources and uncertain harmful factors to the system operation.

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