Magnetic coupling and transmission system with same

Abstract

The utility model discloses a magnetic coupling which comprises a first magnetic coupling part and a second magnetic coupling part which are coaxially arranged, the first magnetic coupling part is provided with a plurality of electromagnets in the annular direction with the axis direction as the center, and the second magnetic coupling part is provided with a plurality of permanent magnets corresponding to the electromagnets. Two annular electrodes are coaxially arranged on the end face, away from the second magnetic coupling part, of the first magnetic coupling part. The two ends of a coil of each electromagnet are electrically connected with the two annular electrodes respectively. A mounting hole for mounting the driving shaft is formed in the middle of the first magnetic coupling part, an avoiding hole is formed in the middle of the second magnetic coupling part, and the second magnetic coupling part movably sleeves the driving shaft through the avoiding hole. The magnetic coupling has the advantages of being flexible and changeable in transmission mode, capable of achieving multi-shaft transmission and wider in application environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to magnetic coupling technical field especially relates to a magnetic coupling and drive system with it. BACKGROUND

[0002] The existing patent with the announcement number CN110752733A discloses a magnetic clutch coupling, comprising a first connecting assembly and a second connecting assembly, and there is a gap between the first connecting assembly and the second connecting assembly, the first connecting assembly comprises a relatively fixed first connecting shaft and a first magnetic part, the second connecting assembly comprises a relatively fixed second connecting shaft and a second magnetic part, the first connecting shaft and the second connecting shaft are coaxially arranged, and the first magnetic part and the second magnetic part are oppositely arranged, the first magnetic part and / or the second magnetic part are electromagnets, when the electromagnet is powered, the first connecting assembly can drive the second connecting assembly to rotate under the action of magnetic force, and the first connecting shaft comprises a first shaft part and a first disc part, and the second connecting shaft comprises a second shaft part and a second disc part.

[0003] However, the magnetic clutch coupling has the following shortcomings: the first shaft part and the first disc part are integrally arranged, and the second shaft part and the second disc part are also integrally arranged, so that the first connecting assembly and the second connecting assembly are always designed in a one-to-one manner, the transmission mode is not flexible enough, and the purpose of multi-shaft linkage cannot be achieved, which needs to be improved. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a magnetic coupling and drive system with it, which has the effects of flexible and variable magnetic coupling transmission mode, multi-shaft transmission, and wider application environment.

[0005] The above technical purpose of the utility model is realized by the following technical scheme: a magnetic coupling, characterized by comprising coaxially arranged first and second magnetic coupling parts, the first magnetic coupling part is provided with a plurality of electromagnets, the second magnetic coupling part is provided with a plurality of permanent magnets corresponding to the electromagnets, two annular electrodes are coaxially arranged on the first magnetic coupling part, and the coils of each electromagnet are respectively connected with the two annular electrodes in an electrical manner.

[0006] A mounting hole for mounting a driving shaft is formed in the middle of the first magnetic coupling part, an avoiding hole is formed in the middle of the second magnetic coupling part, and the second magnetic coupling part is movably sleeved on the driving shaft through the avoiding hole.

[0007] By adopting the technical scheme, the electromagnet is powered by the two ring electrodes to have magnetic properties, the permanent magnet in the second magnetic force coupling part is attracted by the magnetic force of the electromagnet, so that the driving shaft can drive the second magnetic force coupling part to rotate synchronously through the first magnetic force coupling part, the coaxial fixing between the driving shaft and the first magnetic force coupling part can be realized by the mounting hole, so that multiple magnetic force couplings are allowed to be installed on the same driving shaft, or the magnetic force couplings are installed on the multiple driving shafts respectively, the assembling mode is flexible and changeable, the corresponding magnetic force couplings can be controlled individually through the respective ring electrodes, so that the independent control of the power input sources of multiple devices is realized, the cutting-in or cutting-out of the power input sources of the devices is realized, and the magnetic force coupling transmission mode is flexible and changeable, multi-shaft transmission can be realized, and the effect that the applicable environment is wider is achieved.

[0008] The utility model discloses further provide that: first magnetic force coupling part includes annular mounting spare and the end cover of insulating material, the mounting hole is through the middle part of end cover and annular mounting spare, annular mounting spare is provided with a plurality of installation groove along the circumferential interval, a plurality of electromagnet is distributed in the corresponding installation groove.

[0009] By adopting the technical scheme, the end cover made of insulating material has electrical insulation, and the electromagnet in the installation groove can be prevented from being affected by the current generated by the ring electrode on the end cover.

[0010] The utility model discloses further provide that: ring electrode includes the inner ring electrode and outer ring electrode of coplanar setting on the end cover, the outer ring electrode is set to the outside of electromagnet, and the inner ring electrode is set to the inside of electromagnet.

[0011] By adopting the technical scheme, the coils at both ends of the electromagnet can be connected with the inner ring electrode and the outer ring electrode in a shorter stroke.

[0012] The utility model discloses further provide that: concentrically set up inner ring annular groove and outer ring annular groove on the outer end surface of end cover, two ring electrodes are fixedly installed in corresponding inner ring annular groove and outer ring annular groove.

[0013] The utility model discloses further provide that: a plurality of wiring channels are throughed on the side of end cover towards annular mounting spare, and the coil both ends of electromagnet are electrically connected with corresponding ring electrode through wiring channel.

[0014] The utility model discloses further provide that: a plurality of electromagnet is distributed in the ring around the central axis of first magnetic force coupling part, and two ring electrodes are arranged on the end face of first magnetic force coupling part away from second magnetic force coupling part.

[0015] A transmission system, comprising a driving shaft, a driven shaft and a transmission structure, a plurality of magnetic couplings are arranged on each of the driving shafts, the number of the magnetic couplings corresponds to the driven shafts, a power input end of the driving shaft is connected with a driving device, and a second magnetic coupling part of each of the magnetic couplings is connected with the corresponding driven shaft through the transmission structure.

[0016] By adopting the above technical scheme, the driving device drives the driving shaft to rotate, the driving shaft drives the first magnetic coupling parts of the plurality of magnetic couplings to rotate synchronously, the on-off electricity of each coupling is controlled, the energized coupling can drive the corresponding driven shaft to rotate independently through the transmission structure, and the transmission mode of "one driving multiple" is realized.

[0017] The utility model further provides: the middle axis of driving shaft and a plurality of middle axis of driven shaft are parallel or form an angle.

[0018] A transmission system, comprising a driving shaft, a driven shaft and a transmission structure, a plurality of magnetic couplings are arranged on each of the driving shafts, the number of the magnetic couplings corresponds to the driven shafts, a power input end of the driving shaft is connected with a driving device, and a second magnetic coupling part of each of the magnetic couplings is connected with the corresponding driven shaft through the transmission structure.

[0019] By adopting the above technical scheme, the driving device drives the driving shaft to rotate, the driving shaft drives the first magnetic coupling parts of the plurality of magnetic couplings to rotate synchronously, the on-off electricity of each coupling is controlled, the energized coupling can drive the corresponding driven shaft to rotate independently through the transmission structure, and the transmission mode of "one driving multiple" is realized.

[0020] The utility model further provides: the middle axis of driving shaft and a plurality of middle axis of driven shaft are parallel or form an angle.

[0021] In summary, the utility model has the following beneficial effects:

[0022] This invention employs a magnetic coupling with a mounting hole in the middle of the first magnetic coupling section for installing the drive shaft, and a clearance hole in the middle of the second magnetic coupling section. Two annular electrodes, electrically connected to the electromagnet of the first magnetic coupling section, are coaxially arranged on the end face of the first magnetic coupling section away from the second magnetic coupling section. These annular electrodes energize the electromagnet, causing it to become magnetic. The permanent magnet in the second magnetic coupling section is attracted by the electromagnet's magnetic force, allowing the drive shaft to drive the second magnetic coupling section to rotate synchronously via the first magnetic coupling section. This invention utilizes the mounting hole to achieve coaxial fixation between the drive shaft and the first magnetic coupling section, allowing multiple magnetic couplings to be installed on the same drive shaft, or multiple drive shafts to each have their own magnetic coupling. The assembly method is flexible and versatile. Each magnetic coupling can be individually controlled via its annular electrodes, enabling independent control of the power input sources of multiple devices simultaneously. This allows for the switching in or out of the power input sources of each device, offering the advantages of flexible and versatile magnetic coupling transmission methods, multi-axis transmission capabilities, and wider applicability. Attached Figure Description

[0023] Figure 1 This is a structural diagram of the magnetic coupling of this utility model.

[0024] Figure 2 This is a longitudinal sectional view of the magnetic coupling of this utility model.

[0025] Figure 3 This is a schematic diagram of the connection between the magnetic coupling and the electrical connector of this utility model.

[0026] Figure 4 This is a structural diagram of a specific embodiment of the present invention, showing a drive shaft driving multiple driven shafts to rotate through multiple magnetic couplings.

[0027] Figure 5 This is a structural diagram of a specific embodiment two of the present invention, showing a drive shaft driving multiple driven shafts to rotate through multiple magnetic couplings.

[0028] Figure 6 This is a structural diagram of a specific embodiment three of the present invention, showing that multiple drive shafts drive a driven shaft to rotate through corresponding magnetic couplings.

[0029] Figure 7 This is a structural diagram of a specific embodiment four of the present invention, showing that multiple drive shafts drive a driven shaft to rotate through corresponding magnetic couplings.

[0030] In the figure: 1. First magnetic coupling part; 2. End cap; 21. Annular electrode; 211. Outer annular groove; 212. Inner annular groove; 213. Outer electrode; 214. Inner electrode; 3. Annular mounting part; 31. Mounting groove; 32. Electromagnet; 33. Mounting hole; 34. Wiring channel; 4. Second magnetic coupling part; 41. Permanent magnet; 42. Clearance hole; 5. Electrical connector; 6. Drive shaft; 61. Drive device; 7. Driven shaft; 8. Transmission structure; 81. Spur gear; 82. Spur gear mating part; 83. Bevel gear; 84. Bevel gear mating part. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings.

[0032] A magnetic coupling, such as Figures 1-2 As shown, the device includes a first magnetic coupling part 1 and a second magnetic coupling part 4 arranged coaxially. The first magnetic coupling part 1 and the second magnetic coupling part 4 are magnetically coupled. The first magnetic coupling part 1 is provided with a plurality of electromagnets 32 circumferentially around the axial direction. The second magnetic coupling part 4 is provided with a plurality of permanent magnets 41 corresponding to the electromagnets 32. Two annular electrodes 21 are coaxially arranged on the first magnetic coupling part 1. In this embodiment, the two annular electrodes 21 are arranged on the end face of the first magnetic coupling part 1 away from the second magnetic coupling part 4. In other embodiments, the two annular electrodes can also be coaxially arranged on the outer peripheral surface of the first magnetic coupling part 1. The two ends of the coil of each electromagnet 32 ​​are electrically connected to the two annular electrodes 21 respectively. The first magnetic coupling part 1 has a mounting hole 33 in the middle for mounting the drive shaft 6. The second magnetic coupling part 4 has a clearance hole 42 in the middle. The second magnetic coupling part 4 is movably sleeved on the drive shaft 6 through the clearance hole 42.

[0033] like Figures 1-3As shown, the first magnetic coupling part 1 comprises a ring-shaped mounting member 3 and an end cover 2 made of insulating material, a mounting hole 33 is formed through the middle part of the end cover 2 and the ring-shaped mounting member 3, the ring-shaped mounting member 3 is provided with a plurality of installation grooves 31 which are spaced apart in the circumferential direction, a plurality of electromagnets 32 are distributed in the circumferential direction in the corresponding installation grooves 31, the end cover 2 made of insulating material has electrical insulation, which can ensure that the electromagnets 32 in the installation grooves 31 are not affected by the current generated by the ring-shaped electrode 21 on the end cover 2; the ring-shaped electrode 21 comprises an inner ring electrode 214 and an outer ring electrode 213 which are coaxial and coplanar on the end cover 2, the outer ring electrode 213 is arranged corresponding to the outer side of the electromagnet 32, so that the outer ring electrode 213 is aligned with the outer side of the electromagnet 32 in the radial direction of the first magnetic coupling part 1, the inner ring electrode 214 is arranged corresponding to the inner side of the electromagnet 32, so that the inner ring electrode 214 is aligned with the inner side of the electromagnet 32 in the radial direction of the first magnetic coupling part 1, thereby enabling the coils at both ends of the electromagnet 32 to be connected with the inner ring electrode 214 and the outer ring electrode 213 in a shorter stroke; the outer end surface of the end cover 2 is provided with an inner ring-shaped groove 212 and an outer ring-shaped groove 211 which are concentric, the inner ring electrode 214 is fixedly installed in the inner ring-shaped groove 212, and the outer ring electrode 213 is fixedly installed in the outer ring-shaped groove 211; a plurality of wiring channels 34 are formed through the side of the end cover 2 facing the ring-shaped mounting member 3, one end of each wiring channel 34 away from the ring-shaped mounting member 3 is in communication with the corresponding inner ring-shaped groove 212 or outer ring-shaped groove 211, and the coils at both ends of the electromagnet 32 are electrically connected with the corresponding inner ring electrode 214 and outer ring electrode 213 through the wiring channels 34, the coils at both ends of the electromagnet 32 can be electrically connected with the inner ring electrode 214 and the outer ring electrode 213 by welding or other methods; the electric connecting member 5 electrically connected to the output end of the power supply is further provided, the two electric contacts of the electric connecting member 5 are respectively in contact with the two ring-shaped electrodes 21 for power supply, and the electric connecting member 5 in the embodiment is provided as a power supply carbon brush. Embodiment one

[0035] A transmission system, such as Figure 4As shown, the transmission system comprises driving shafts 6, driven shafts 7 and transmission structures 8, each driving shaft 6 is provided with a plurality of magnetic couplings, the number of driven shafts 7 corresponds to the number of magnetic couplings, the power input end of the driving shaft 6 is connected with a driving device 61, and the second magnetic coupling part 4 of each magnetic coupling is drivingly connected with the corresponding driven shaft 7 through the transmission structure 8, the driving device 61 drives the driving shaft 6 to rotate, the driving shaft 6 drives the first magnetic coupling part 1 of the plurality of magnetic couplings to rotate synchronously, and the independent on-off electricity of each coupling is controlled, so that the energized coupling can drive the corresponding driven shaft 7 to rotate independently through the transmission structure 8, the transmission mode of the utility model is realized, the driving shaft 6 and the plurality of driven shafts 7 are coaxially fixed, the transmission structure 8 comprises a straight gear 81 and a straight tooth matching part 82, the straight gear 81 is coaxially fixedly connected to the driven shaft 7, and the straight tooth matching part 82 is circumferentially arranged on the periphery of the second magnetic coupling part 4, the second magnetic coupling part 4 is meshed with the straight gear 81 through the straight tooth matching part 82 to realize transmission, and the central axis of the driving shaft 6 is parallel to the central axes of the plurality of driven shafts 7.

[0036] The basic working principle of the utility model is that: the installation hole 33 for installing the driving shaft 6 is formed in the middle of the first magnetic coupling part 1 of the magnetic coupling, the avoiding hole 42 is formed in the middle of the second magnetic coupling part 4, and the two annular electrodes 21 electrically connected with the electromagnet 32 of the first magnetic coupling part 1 are coaxially arranged on the end face of the first magnetic coupling part 1 away from the second magnetic coupling part 4, the permanent magnet 41 in the second magnetic coupling part 4 is attracted by the magnetic force of the electromagnet 32, the driving shaft 6 can drive the second magnetic coupling part 4 to rotate synchronously through the first magnetic coupling part 1, the coaxial fixing between the driving shaft 6 and the first magnetic coupling part 1 can be realized through the installation hole 33, a plurality of magnetic couplings can be installed on the same driving shaft 6, or a plurality of magnetic couplings can be installed on a plurality of driving shafts 6, the assembly mode is flexible and changeable, the corresponding magnetic couplings can be controlled independently through the respective annular electrodes 21, the independent control of the power input sources of a plurality of devices can be realized at the same time, the cut-in or cut-out of the power input sources of the respective devices can be realized, and the magnetic coupling transmission mode is flexible and changeable, multi-shaft transmission can be realized, and the utility environment is wider. Specific embodiment two

[0038] A kind of transmission system, such as Figure 5 As shown, the difference between the embodiment and the specific embodiment one is that: the transmission structure 8 comprises a bevel gear 83 and a bevel gear matching part 84, the bevel gear 83 is coaxially fixedly connected to the driven shaft 7, the bevel gear matching part 84 is circumferentially arranged on the periphery of the second magnetic coupling part 4, and the second magnetic coupling part 4 is meshed with the bevel gear 83 through the bevel gear matching part 84, so that the central axis of the driving shaft 6 is perpendicular to the central axes of the plurality of driven shafts 7.

[0039] The other structures in this embodiment are the same as those in Specific Embodiment 1, and will not be described again here. Specific Implementation Example 3

[0041] A transmission system, such as Figure 6 As shown, the system includes a drive shaft 6, a driven shaft 7, and a transmission structure 8. The power input end of the drive shaft 6 is connected to a drive device 61. There is at least one drive shaft 6, and each drive shaft 6 is equipped with a magnetic coupling. The second magnetic coupling parts 4 of several magnetic couplings act together on a driven shaft 7 through the transmission structure 8, driving it to rotate. Each drive device 61 drives the corresponding drive shaft 6 to rotate, and the drive shaft 6 drives the first magnetic coupling part 1 of the corresponding coupling to rotate. By controlling the individual on / off state of each coupling, the energized coupling can drive the driven shaft 7 through the transmission structure 8. The driving shaft 7 rotates independently, and the magnitude of the power acting on the driven shaft 7 can be changed by controlling the number of magnetic couplings at the power input end of the driven shaft 7, thus realizing the "multiple-to-one" transmission method of this utility model. In this embodiment, the transmission structure 8 has a spur gear 81 and a spur gear mating part 82. The spur gear 81 is coaxially fixedly connected to the driven shaft 7, and the spur gear mating part 82 is circumferentially arranged on the second magnetic coupling part 4. The second magnetic coupling part 4 achieves transmission through the meshing of the spur gear 81 with the spur gear mating part 82, so that the central axis of the driving shaft 6 is parallel to the central axes of several driven shafts 7. Specific Implementation Example 4

[0043] A transmission system, such as Figure 7 As shown, the difference between this embodiment and specific embodiment three is that the transmission structure 8 includes a bevel gear 83 and a bevel gear mating part 84. The bevel gear 83 is coaxially fixedly connected to the driven shaft 7. The bevel gear mating part 84 is circumferentially arranged on the second magnetic coupling part 4. The second magnetic coupling part 4 meshes with the bevel gear 83 through the bevel gear mating part 84, so that the central axis of the drive shaft 6 is perpendicular to the central axis of several driven shafts 7.

[0044] The other structures in this embodiment are the same as those in specific embodiment three, and will not be described again here.

[0045] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A magnetic coupling, characterized by: The first magnetic coupling part (1) and the second magnetic coupling part (4) are coaxially arranged, the first magnetic coupling part (1) is provided with a plurality of electromagnets (32), the second magnetic coupling part (4) is provided with a plurality of permanent magnets (41) corresponding to the electromagnets (32), and the first magnetic coupling part (1) is coaxially provided with two annular electrodes (21); the coils of each electromagnet (32) are electrically connected to the two annular electrodes (21) respectively. The middle part of the first magnetic coupling part (1) is provided with a mounting hole (33) for mounting a driving shaft (6), and the middle part of the second magnetic coupling part (4) is provided with a avoiding hole (42), and the second magnetic coupling part (4) is movably sleeved on the driving shaft (6) through the avoiding hole (42).

2. A magnetic coupling according to claim 1, characterised in that: The first magnetic coupling part (1) comprises an annular mounting member (3) and an end cover (2) made of insulating material, the mounting hole (33) penetrates the middle part of the end cover (2) and the annular mounting member (3), the annular mounting member (3) is provided with a plurality of installation grooves (31) spaced apart along the circumference, and a plurality of electromagnets (32) are distributed in the installation grooves (31) correspondingly.

3. A magnetic coupling according to claim 2, characterised in that: The annular electrode (21) comprises an inner ring electrode (214) and an outer ring electrode (213) which are coaxially and coplanar arranged on the end cover (2), the outer ring electrode (213) is arranged corresponding to the outer side of the electromagnet (32), and the inner ring electrode (214) is arranged corresponding to the inner side of the electromagnet (32).

4. A magnetic coupling according to claim 2, wherein: The outer end surface of the end cover (2) is concentrically provided with an inner ring annular groove (212) and an outer ring annular groove (211), and the two annular electrodes (21) are fixedly installed in the inner ring annular groove (212) and the outer ring annular groove (211) correspondingly.

5. A magnetic coupling according to claim 4, wherein: The side of the end cover (2) facing the annular mounting member (3) is provided with a plurality of wire connection channels (34), and the coils of the electromagnets (32) are electrically connected to the corresponding annular electrodes (21) through the wire connection channels (34).

6. A magnetic coupling as claimed in claim 1, wherein: A plurality of electromagnets (32) are distributed around the central axis of the first magnetic coupling part (1), and two annular electrodes (21) are arranged on the end surface of the first magnetic coupling part (1) away from the second magnetic coupling part (4).

7. A transmission system comprising a drive shaft (6), a driven shaft (7) and a transmission structure (8), characterized in that: Each driving shaft (6) is provided with a plurality of magnetic couplings according to any one of claims 1-6, the driven shaft (7) corresponds in number to the magnetic couplings, the power input end of the driving shaft (6) is connected to a driving device (61), and the second magnetic coupling part (4) of each magnetic coupling is drivingly connected to the corresponding driven shaft (7) through the transmission structure (8).

8. The transmission system of claim 7, wherein: The central axis of the driving shaft (6) is parallel to or forms an angle with the central axes of a plurality of driven shafts (7).

9. A transmission system comprising a drive shaft (6), a driven shaft (7) and a transmission structure (8), the power input end of the drive shaft (6) being connected to a drive device (61), characterized in that: At least one driving shaft (6) is provided, and each driving shaft (6) is provided with a magnetic coupling according to any one of claims 1-6, and the second magnetic coupling parts (4) of a plurality of magnetic couplings jointly act on one driven shaft (7) through the transmission structure (8) and drive it to rotate.

10. The transmission system of claim 9, wherein: The central axis of the drive shaft (6) is parallel to or forms an angle with the central axis of the driven shaft (7). The central axis of the drive shaft (6) is parallel to or forms an angle with the central axis of the driven shaft (7).

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