Novel permanent magnet coupler
A permanent magnet coupler, a new type of technology, applied in the field of mechanical transmission, can solve the problems of no overload protection or unreliable protection, and achieve the effect of saving installation time, accurate and reliable coaxial positioning, and preventing entry into the coupling area.
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Embodiment 1
[0038] Such as figure 1 As shown, the new permanent magnet coupler is a synchronous permanent magnet coupler, mainly composed of the active rotor sleeve 1, the active rotor carrier 3, the active rotor carrier connector 4, the active rotor permanent magnet steel 7, the radiator 2, the driven Rotor spline shaft 12, driven rotor carrier 5, driven rotor permanent magnet steel 6, driven rotor sleeve 10, baffle plate 16, shape memory alloy springs 13 and 15, ordinary spring 14, positioning pin shaft 9 and positioning Screw 11 forms.
[0039]The active rotor carrier 3 has a disc-shaped flange structure, which is composed of two groups, and is rigidly connected through the active rotor carrier connector 5; a permanent magnetic steel 7 is installed on the inner surface of the two groups of active rotor carriers 3 along the circumferential direction. Radiators 2 are installed on the outer surface along the circumferential direction. The driven rotor carrier 5 also has a disc-shaped fl...
Embodiment 2
[0047] This patent has another preferred new permanent magnetic coupler, such as figure 2 As shown, its structural difference from Embodiment 1 is that the active rotor carrier 3 has an axial flange 31, and the axial flange 31 is located on the inner side of the two sets of active rotor carriers 3, and the end of the permanent magnet steel away from the transmission shaft is against the By the axial flange 31.
[0048] By arranging the axial flange, the safety redundancy can be further increased to deal with unfavorable working conditions that may not occur in general working conditions but may only occur in extreme cases. For example, it is possible to prevent the axial thrust produced by the shape memory alloy springs on both sides at different heating temperatures, thereby causing sliding collisions on one side of the two coupling plates of the driving rotor and the driven rotor. By arranging the axial flange, the sliding collision between the magnetic steel of the drivin...
Embodiment 3
[0050] Another preferred novel permanent magnetic coupler in this patent is an asynchronous permanent magnetic coupler. Its structural difference from Embodiment 1 is that the active rotor carrier of the asynchronous permanent magnet coupler is not provided with permanent magnetic steel on the inner side of the carrier, but is equipped with a copper conductor disk, and a radiator is installed on the outer side.
[0051] At the initial moment of starting, the conductor disk of the active rotor cuts the magnetic field lines of the driven rotor, and the conductor disk induces eddy currents, which in turn generate an induced magnetic field coupled with the permanent magnet steel of the driven rotor, and the active rotor and the driven rotor transmit torque and speed asynchronously. , because the speed difference between the active rotor and the driven rotor is small, the eddy current heat is dissipated through the radiator, and the shape memory alloy spring does not reach the "abno...
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