A kind of permanent magnet clutch and its assembly method
A clutch and permanent magnet technology, applied in the field of clutches, can solve the problems of mechanical wear, high noise, and inability to resist earthquakes.
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Embodiment 1
[0049] see figure 1 , this embodiment provides a permanent magnet clutch. Wherein, the permanent magnet clutch includes a driving disc 3 and a driven disc 4 . There is no direct contact between the driving disc 3 and the driven disc 4, and separation and coupling are realized through the action of a magnetic field, thereby realizing the clutch clutch process.
[0050] see figure 2 as well as image 3 , the driving disk 3 includes the driving inner shaft 1, the magnet fixed disk 5, the magnetic coil 1 7, the driving outer shaft 11, the back iron block 6 and the magnetic coil 2 8. The magnet fixed disk 5 is arranged coaxially with the driving inner shaft 1 and is fixedly connected. The active inner shaft 1 and the magnet fixing disk 5 can be connected by means of welding, clamping, bonding, etc., and can also be directly integrally formed with the magnet fixing disk 5 . The number of magnetic coils 17 is multiple, and a plurality of magnetic coils 7 are arranged in a circl...
Embodiment 2
[0074] This embodiment provides a permanent magnet clutch, which refines the structure on the basis of Embodiment 1. Wherein, the distance between the fixed magnet disk 5 and the active outer shaft 11 is d, and the value range of d is 2-4 mm. Of course, what needs to be explained here is that the smaller the value of the distance d, the better, but when the value of the distance d is too low, especially when the value of the distance d is lower than 2mm, the manufacturing cost of the permanent magnet clutch Can greatly improve, and this is because the magnetic circle two 8 and the corresponding magnetic circle one 7 are easy to attract together because the distance is too low.
[0075] In some embodiments, the preset distance d is 3 mm, and the distance d can be around 3 mm, and an optimal effect can be achieved at this time.
[0076] In other embodiments, the distance d is set according to the specific size of the clutch. For example, when the magnetism of the magnetic coil...
Embodiment 3
[0078] This embodiment provides a permanent magnet clutch, which refines the structure on the basis of Embodiment 1. Specifically, the projection planes of all magnetic coils one 7 on the end face of the active outer shaft 11 are located on the same projection sector, and the total projection area accounts for 70%-90% of the projection sector area. The total projected area of all magnetic coils 2 8 on the outer wall of the active outer shaft 11 accounts for 70%-90% of the area of the cylinder where the projected surface is located. What needs to be explained here is that, in this embodiment, the larger the value of these area ratios, the better the performance of the permanent magnet clutch. However, when the area ratio is greater than 90%, the gap will be too small, which is not conducive to the heat dissipation of the clutch when it is working, and then causes the magnetism of each magnetic ring to fade. Similarly, when the area ratio is less than 70%, the gap will be t...
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