A coaxial sleeve type permanent magnet eddy current governor with fixed end face

Abstract

The invention discloses a coaxial sleeve type permanent magnet eddy-current speed regulator with a fixed end surface, and belongs to the technical field of permanent magnet eddy-current transmission. The coaxial sleeve type permanent magnet eddy-current speed regulator 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 speed regulator 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 coaxial sleeve type permanent magnet eddy-current speed regulator with the fixed end surface comprises a driving rotor, an end surface positioning seat, a transition shaft, a driven rotor and a speed regulation mechanism, wherein the driving rotor is composed of a fixed rotor body, a sliding rotor body and a permanent magnet layer, the fixed rotor body is composed of a fixed inner round barrel, a middle supporting plate and a fixed outer round barrel, the driven rotor is composed of a driven rotor body, an end cover shaft and an eddy-current ring, the driven rotor body is composed a driven inner round barrel, an outer supporting plate and a driven outer round barrel which are coaxially arranged, the end cover shaft is composed of an end cover and a driven shaft which are coaxially arranged, and the end surface positioning seat is composed of an end surface positioning disc and a positioning bearing seat which are coaxially arranged.

Description

technical field [0001] The invention belongs to the technical field of permanent magnet eddy current transmission, in particular to a coaxial sleeve type permanent magnet eddy current governor with fixed end faces. Background technique [0002] The permanent magnet eddy current speed regulating device realizes speed regulation by changing the speed difference between the prime mover and the load. System reliability and other advantages. The permanent magnet eddy current speed regulating device is composed of three parts: the eddy current ring rotor made of non-magnetic conductive material (usually copper), the permanent magnet rotor inlaid with permanent magnets, and the adjustment mechanism. The basic working principle of permanent magnet eddy current speed regulation is: when the permanent magnet rotor and the eddy current ring rotor rotate relative to each other, the eddy current ring rotor cuts the magnetic force line in the alternating strong magnetic field generated b...

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 coaxial sleeve type permanent magnet eddy current governor products usually use the following two The installation and positioning of the two rotors can be achieved by means of: one is to use the connecting sleeve to directly set the permanent magnet rotor and the eddy current ring rotor on the prime mover or the drive shaft of the load; the other is to set a special bracket to separate the two rotors Support it, and then use the coupling parts to connect the prime mover and the drive shaft of the load with the shafts of the two rotors respectively

These two connection methods have obvious disadvantages: the former connection method directly applies all the weight and force of the permanent magnet rotor and the eddy current ring rotor to the prime mover or the drive shaft of the load, especially when the pulley is directly installed or There is a large radial force in the gear, which greatly increases the force on the supporting bearing of the prime mover or the load-driven shaft, resulting in poor working conditions, increased vibration noise, and reduced effective working life; the latter connection Due to the addition of one or two sets of brackets, it is 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 vibrations to the system during operation. Unsure of harmful factors

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