CN216981769U - Permanent magnet eddy current coupling - Google Patents
Permanent magnet eddy current coupling Download PDFInfo
- Publication number
- CN216981769U CN216981769U CN202220346534.XU CN202220346534U CN216981769U CN 216981769 U CN216981769 U CN 216981769U CN 202220346534 U CN202220346534 U CN 202220346534U CN 216981769 U CN216981769 U CN 216981769U
- Authority
- CN
- China
- Prior art keywords
- disc
- magnetic
- conductor
- assembly
- disk
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The utility model relates to a permanent magnet eddy current coupling, which comprises a conductor disc and two first disc assemblies fixedly connected, wherein the two first disc assemblies are symmetrically arranged on two sides of the conductor disc, and air gaps are respectively arranged between the conductor disc and the two first disc assemblies; the first magnetic disk assembly comprises a first magnetic disk, a back plate and first magnetic steel, the back plate is arranged on one side, away from the conductor disk, of the first magnetic disk, and the back plate is made of paramagnetic materials; the first magnetic steel penetrates through the first magnetic disk. The magnetic disc has the advantages that the back plate is not arranged on the conductor disc, when the conductor disc is static, the back plate on the conductor disc and the first magnetic disc assembly are prevented from generating suction, and the stability of an air gap between the conductor disc and the first magnetic disc assembly is kept. When the conductor disc rotates, a repulsive force is formed between the conductor disc and the first magnetic disc. When the conductor disc deviates from the central position between the two first disc assemblies, the air gap between the conductor disc and the first disc assemblies is smaller, the repulsive force is larger, and under the action of the larger repulsive force, the conductor disc is always positioned at the central position between the two first disc assemblies.
Description
Technical Field
The utility model relates to the technical field of couplings, in particular to a permanent magnet eddy coupling.
Background
The permanent magnet eddy current coupling is a device for realizing power transmission by using the principle of permanent magnet eddy current, utilizes the magnetic coupling transmission technology to transmit torque, utilizes the characteristic that a magnetic field can penetrate a certain space distance and a substance material to transmit mechanical energy, and has energy transmission capability related to the magnetic field intensity and the rotation speed difference of a master end and a slave end.
The existing permanent magnet eddy current coupling mainly comprises a conductor disc assembly and a disc assembly which are oppositely arranged, wherein the disc assembly is positioned between the two conductor disc assemblies. The conductor disc assembly comprises a conductor disc and a back plate arranged on one side, far away from the magnetic disc assembly, of the conductor disc, and the back plate is used for sealing magnetic lines between the conductor disc and the magnetic disc assembly so as to improve the magnetic field intensity between the conductor disc and the magnetic disc assembly and improve the energy transfer capacity of the permanent magnet eddy current coupling. When the permanent magnet eddy current coupling is used, the magnetic disc assembly exerts suction force on the back plate. Influenced by manufacturing error and installation error, when the disk assembly and the conductor disc assembly are assembled, the disk assembly is difficult to ensure to be positioned at the central position between the two conductor disc assemblies, so that the suction force between the back plates of the disk assembly and the two conductor disc assemblies is inconsistent, one side with larger suction force drives the disk assembly to move, the offset of the disk assembly is gradually increased, and along with the extension of working time, the gap between the bearings which are respectively fixed on the two back plates and are far away from one side of the conductor disc is also increased, the offset of the disk assembly is further increased until the disk assembly is attached to the conductor disc. When the magnetic disc assembly is attached to the conductor disc, the permanent magnet eddy current coupling can fail and stop, the magnetic disc assembly is abraded and damaged by demagnetization, and even fragments are generated to cause casualties.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In view of the above disadvantages and shortcomings of the prior art, the present invention provides a permanent magnet eddy current coupling, which solves the technical problems that when the existing permanent magnet eddy current coupling is used, the disc assembly can deviate until the disc assembly is attached to the conductor disc, so that the permanent magnet eddy current coupling fails and stops, the disc assembly is worn and damaged by demagnetization, and even fragments are generated to cause casualties.
(II) technical scheme
In order to achieve the purpose, the utility model adopts the main technical scheme that:
in a first aspect, an embodiment of the present invention provides a permanent magnet eddy current coupling, including a conductor disc and two first disc assemblies fixedly connected to the conductor disc, where the two first disc assemblies are symmetrically disposed on two sides of the conductor disc, and air gaps are respectively disposed between the conductor disc and the two first disc assemblies;
the first magnetic disk assembly comprises a first magnetic disk, a back plate and first magnetic steel, the back plate is arranged on one side, away from the conductor disk, of the first magnetic disk, and the back plate is made of paramagnetic materials; the first magnetic steel penetrates through the first magnetic disc.
According to the utility model, the first magnetic steels on the two first magnetic disks are oppositely arranged and have opposite magnetism.
According to the utility model, at least one first magnetic steel is arranged on the first magnetic disk; when the number of the first magnetic steels is larger than one, the first magnetic steels are arranged along the circumferential direction of the first magnetic disc at intervals, and the magnetism of the two adjacent first magnetic steels is opposite.
According to the utility model, two conductor discs are arranged, and the two conductor discs are arranged at intervals and fixedly connected.
According to the utility model, the two conductor disks are connected by a connecting hub, which is provided with a through-hole for connecting a drive device.
According to the utility model, the device also comprises a second disc component positioned between the two conductor discs, and the second disc component is fixedly connected with the two first disc components;
the second magnetic disk assembly comprises a second magnetic disk and second magnetic steel, and the second magnetic steel penetrates through the second magnetic disk;
the second magnetic steel and the first magnetic steel are oppositely arranged and have opposite magnetism.
According to the utility model, at least one second magnetic steel is arranged on the second magnetic disk; when the second magnetic steel is more than one, the second magnetic steel is arranged along the circumferential direction of the second magnetic disk at intervals, and the magnetism of the two adjacent second magnetic steels is opposite.
According to the utility model, a spacing sleeve for spacing the second disc assembly from the first disc assembly is arranged between the second disc assembly and the first disc assembly;
the spacer sleeve is a cylinder, the spacer sleeves are arranged along the circumferential direction of the first magnetic disk assembly at intervals, and a cavity formed by enclosing the spacer sleeves is used for accommodating the conductor disk.
According to the utility model, the two first disk assemblies and the second disk assembly are connected by bolts.
According to the utility model, two second magnetic disks are arranged, the two second magnetic disks are attached, and the second magnetic steel penetrates through the two second magnetic disks.
(III) advantageous effects
The beneficial effects of the utility model are: the permanent magnet eddy current coupling of the present invention includes a conductor disc for coupling to a drive device and a first disc assembly for coupling to a load. Two first disk assemblies are arranged and fixedly connected, the two first disk assemblies are symmetrically arranged on two sides of the conductor disk, and air gaps are respectively arranged between the conductor disk and the two first disk assemblies. When the conductor disc rotates, a rotation speed difference is formed between the conductor disc and the first disc groups, a magnetic field is formed between the conductor disc and the first disc groups, and then the two first disc groups and the load are driven to synchronously rotate.
Because the back plate is not arranged on the conductor disc of the permanent magnet eddy current coupling, when the conductor disc is static, the situation that attraction is generated between the back plate on the conductor disc and the first magnetic disc assembly is avoided, and the stability of an air gap between the conductor disc and the first magnetic disc assembly is kept. When the conductor disc rotates, eddy current is generated in the conductor disc, a reverse magnetic field is formed, and repulsive force is formed between the conductor disc and the first magnetic disc. When the conductor disc is offset from a center position between the two first disc assemblies, the amount of air gap between the conductor disc and the two first disc assemblies changes. The repulsion between the conductor disc and the first magnetic disc component is larger when the air gap between the conductor disc and the first magnetic disc component is smaller, therefore, the air gap between the conductor disc and the first magnetic disc component is smaller, the repulsion between the conductor disc and the first magnetic disc component is larger, under the action of the larger repulsion, the conductor disc is always positioned at the central position between the two first magnetic disc components, the situation that the conductor disc deviates to contact with the first magnetic disc component to cause the failure stop of the permanent magnet eddy current coupling, the abrasion and demagnetization damage of the first magnetic disc component are avoided, even fragments are formed to cause the casualties to occur, the service life of the permanent magnet eddy current coupling is prolonged, and the use cost of the permanent magnet eddy current coupling is reduced.
Meanwhile, a back plate is arranged on one side, away from the conductor disc, of the first magnetic disc, the back plate is made of paramagnetic materials, and the back plates on the two first magnetic disc assemblies are used for sealing magnetic lines between the two first magnetic disc assemblies and the conductor disc so as to improve the magnetic field intensity between the first magnetic disc assemblies and the conductor disc.
Drawings
FIG. 1 is a perspective view of a permanent magnet eddy current coupling of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is an assembly view of the conductor disc and the connection hub of FIG. 2;
FIG. 4 is an assembly view of the first disk assembly and the second disk assembly of FIG. 2;
FIG. 5 is a schematic view of the magnetic field distribution of the first magnetic steel, the second magnetic steel and the conductor disc in FIG. 2 when the conductor disc rotates;
fig. 6 is a diagram showing a positional relationship between the first magnetic steel and the first magnetic disk in fig. 4.
[ description of reference ]
1: a conductor disc;
2: a first disk assembly; 21: a first magnetic disk; 22: a back plate; 23: a first magnetic steel;
3: a second disk assembly; 31: a second magnetic disk; 32: a second magnetic steel;
4: connecting the hub;
5: a spacer sleeve;
6: and (4) bolts.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present embodiments of the utility model, which are illustrated in the accompanying drawings.
Referring to fig. 1-4, a permanent magnet eddy current coupling according to an embodiment of the present invention includes a conductor plate 1 for connecting a driving device and a first disc assembly 2 for connecting a load. Two first disk assemblies 2 are arranged, the two first disk assemblies 2 are fixedly connected, the two first disk assemblies 2 are symmetrically arranged on two sides of the conductor plate 1, and air gaps are respectively arranged between the conductor plate 1 and the two first disk assemblies 2. A magnetic field is formed between the rotating conductor disc 1 and the first disc assemblies 2, and the two first disc assemblies 2 and a load are driven to rotate synchronously under the action of the magnetic field.
It should be noted that, since the back plate is not disposed on the conductor disc 1 of the permanent magnet eddy current coupling, when the conductor disc 1 is stationary, the generation of the attraction force between the back plate on the conductor disc 1 and the first disc assembly 2 is avoided, so as to maintain the stability of the air gap between the conductor disc 1 and the first disc assembly 2. When the conductor disc 1 rotates, eddy currents are also generated in the conductor disc 1 and form a reverse magnetic field, and a repulsive force is formed between the conductor disc 1 and the first magnetic disc 21. When the conductor disc 1 is displaced from the central position between the two first disc assemblies 2, the amount of air gap between the conductor disc 1 and the two first disc assemblies 2 changes. The repulsion between the conductor disc 1 and the first disc assembly 2 is larger when the air gap between the conductor disc 1 and the first disc assembly 2 is smaller, therefore, the air gap between the conductor disc 1 and the first disc assembly 2 is smaller, the repulsion between the conductor disc 1 and the first disc assembly 2 is larger, under the action of the larger repulsion, the conductor disc 1 is always positioned at the central position between the two first disc assemblies 2, the situation that the conductor disc 1 is deviated to the position contacting with the first disc assembly 2 to cause the failure stop of the permanent magnet eddy current coupling, and the first disc assembly 2 is worn and demagnetized to be damaged, even fragments are formed to cause the casualties to occur, the service life of the permanent magnet eddy current coupling is prolonged, and the use cost of the permanent magnet eddy current coupling is reduced.
Referring to fig. 2 and 3, further, two conductor disks 1 are provided, and the two conductor disks 1 are spaced apart and fixedly connected to increase the total magnetic field strength between the two conductor disks 1 and the two first disk assemblies 2. The two conductor discs 1 are connected through a connecting hub 4, and a through hole for connecting a driving device is arranged on the connecting hub 4.
The conductor disc 1 is made of a magnetic conductive material, preferably aluminum or copper.
Referring to fig. 2 and 4, further, the first disk assembly 2 includes a first disk 21, a back plate 22 and a first magnetic steel 23. The back plate 22 is arranged on the side of the first magnetic disk 21 remote from the conductor disk 1. The first magnetic steel 23 penetrates through the first magnetic disc 21, the first magnetic disc 21 is used for fixing the first magnetic steel 23, and the first magnetic steel 23 is used for generating a magnetic field between the first magnetic steel 23 and the conductor disc 1. The backing plate 22 is a paramagnetic material, preferably steel or iron, more preferably steel. The back plate 22 on the two first disk assemblies 2 is used to enclose the magnetic field lines between the two first disk assemblies 2 and the conductor disks 1 to increase the magnetic field strength between the first disk assemblies 2 and the conductor disks 1.
Referring to fig. 4-6, the first magnetic steels 23 of the two first magnetic disks 21 are oppositely arranged and have opposite magnetism, so that a reverse repulsive force is formed between the two first magnetic disks 21 and the conductor disk 1. The first magnetic disc 21 is a circular ring body, at least one first magnetic steel 23 is arranged on the first magnetic disc 21, when the first magnetic steel 23 is larger than one, the first magnetic steel 23 is arranged along the circumferential direction of the first magnetic disc 21 at intervals, and the magnetism of the two adjacent first magnetic steels 23 is opposite, so that a closed magnetic circuit is formed between the first magnetic steel 23 and the conductor disc 1, and the utilization rate of a magnetic force line between the first magnetic steel 23 and the conductor disc 1 is improved.
Referring to fig. 2, 4 and 5, further, a second disc assembly 3 is disposed between the two conductor discs 1, the two conductor discs 1 are symmetrically disposed on both sides of the second disc assembly 3, the second disc assembly 3 is fixedly connected with the two first disc assemblies 2 to rotate synchronously with the first disc assemblies 2, and the second disc assembly 3 is used for further improving the magnetic field intensity between the conductor discs 1.
The second disk assembly 3 includes a second disk 31 and a second magnetic steel 32, and the second magnetic steel 32 is disposed through the second disk 31. The second disk 31 is a torus, and the cavity of the second disk 31 is used for accommodating the connecting hub 4. The second magnet 32 is used to generate a magnetic field with the conductor plate 1. The second magnetic steel 32 and the first magnetic steel 23 are oppositely arranged and have opposite magnetism, so that a repulsive force for driving the conductor disc 1 to be always positioned at the center positions of the two first disc assemblies 2 is also formed between the second magnetic steel 32 and the conductor disc 1. At least one second magnetic steel 32 is arranged on the second magnetic disc 31. When the number of the second magnetic steels 32 is larger than one, the second magnetic steels 32 are arranged along the circumferential direction of the second magnetic disc 31 at intervals, and the magnetism of two adjacent second magnetic steels 32 is opposite, so that a closed magnetic circuit is formed between the second magnetic steels 32 and the conductor disc 1, and the utilization efficiency of magnetic force lines between the second magnetic steels 32 and the conductor disc 1 is improved.
The second magnetic disk 31 is preferably provided with two, the two second magnetic disks 31 are attached to each other, and the second magnetic steel 32 penetrates through the two second magnetic disks 31, so that the connection stability between the second magnetic disks 31 and the second magnetic steel 32 is improved.
Referring to fig. 4, further, a spacer 5 for spacing the second disc assembly 3 from the first disc assembly 2 is provided between the second disc assembly 3 and the two first disc assemblies 2, respectively. The spacer 5 is the cylinder, and a plurality of spacers 5 set up along the circumference interval of first disk subassembly 2, and a plurality of spacers 5 enclose synthetic cavity and are used for holding conductor dish 1.
Referring to fig. 4, the second disc assembly 3 and the two first disc assemblies 2 are connected by bolts 6: the bolts 6 pass through the two first magnetic disks 21, the second magnetic disk 31 and the spacer 5 in the axial direction of the disk assembly to facilitate the assembly and disassembly between the two first disk assemblies 2, the second disk assembly 3, the conductor disk 1 and the connecting hub 4.
In the present invention, unless otherwise expressly stated or limited, a first feature may be "on" or "under" a second feature, and the first and second features may be in direct contact, or the first and second features may be in indirect contact via an intermediate. Also, a first feature "on," "above," and "over" a second feature may be directly or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lower level than the second feature.
In the description herein, the description of the terms "one embodiment," "some embodiments," "an embodiment," "an example," "a specific example" or "some examples" or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are illustrative and not restrictive, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the scope of the present invention.
Claims (10)
1. A permanent magnet eddy current coupling is characterized by comprising a conductor disc (1) and two first disc assemblies (2) fixedly connected with the conductor disc (1), wherein the two first disc assemblies (2) are symmetrically arranged on two sides of the conductor disc (1), and air gaps are respectively arranged between the conductor disc (1) and the two first disc assemblies (2);
the first magnetic disk assembly (2) comprises a first magnetic disk (21), a back plate (22) and first magnetic steel (23), the back plate (22) is arranged on one side, away from the conductor disk (1), of the first magnetic disk (21), and the back plate (22) is made of paramagnetic materials; the first magnetic steel (23) penetrates through the first magnetic disc (21).
2. A permanent magnet eddy current coupling according to claim 1, characterized in that the first magnetic steels (23) on the two first discs (21) are oppositely arranged and magnetically opposite.
3. A permanent magnet eddy current coupling according to claim 1, characterised in that at least one first magnetic steel (23) is arranged on the first magnetic disc (21); when the first magnetic steel (23) is larger than one, the first magnetic steel (23) is arranged along the circumferential interval of the first magnetic disc (21), and the magnetism of the first magnetic steel (23) is opposite to that of the adjacent two.
4. A permanent magnet eddy current coupling according to claim 1, characterised in that there are two conductor discs (1), and that two conductor discs (1) are arranged at a distance and fixedly connected.
5. A permanent magnet eddy current coupling according to claim 4, characterised in that the two conductor discs (1) are connected by a connection hub (4), which connection hub (4) is provided with through holes for connection to a drive device.
6. A permanent magnet eddy current coupling according to claim 5, further comprising a second disc assembly (3) between the two conductor discs (1), the second disc assembly (3) being fixedly connected to the two first disc assemblies (2);
the second magnetic disk assembly (3) comprises a second magnetic disk (31) and second magnetic steel (32), and the second magnetic steel (32) penetrates through the second magnetic disk (31);
the second magnetic steel (32) and the first magnetic steel (23) are oppositely arranged and have opposite magnetism.
7. A permanent magnet eddy current coupling according to claim 6, characterised in that at least one second magnetic steel (32) is arranged on the second magnetic disc (31); when the second magnetic steel (32) is larger than one, the second magnetic steel (32) is arranged along the circumferential interval of the second magnetic disk (31), and the magnetism of the second magnetic steel (32) is opposite to that of the adjacent two.
8. A permanent magnet eddy current coupling according to claim 6, characterised in that a spacer sleeve (5) is provided between the second disc assembly (3) and the first disc assembly (2) for spacing the second disc assembly (3) from the first disc assembly (2);
the spacing sleeve (5) is a cylinder, the spacing sleeve (5) is arranged along the circumferential direction of the first magnetic disk assembly (2) at intervals, and a cavity enclosed by the spacing sleeve (5) is used for accommodating the conductor disk (1).
9. A permanent magnet eddy current coupling according to claim 6, characterized in that the two first disc assemblies (2) and the second disc assemblies (3) are connected by means of bolts (6).
10. A permanent magnet eddy current coupling according to claim 6, characterized in that there are two second discs (31), two second discs (31) are attached, and the second magnetic steel (32) penetrates through the two second discs (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220346534.XU CN216981769U (en) | 2022-02-21 | 2022-02-21 | Permanent magnet eddy current coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220346534.XU CN216981769U (en) | 2022-02-21 | 2022-02-21 | Permanent magnet eddy current coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216981769U true CN216981769U (en) | 2022-07-15 |
Family
ID=82354358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220346534.XU Active CN216981769U (en) | 2022-02-21 | 2022-02-21 | Permanent magnet eddy current coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216981769U (en) |
-
2022
- 2022-02-21 CN CN202220346534.XU patent/CN216981769U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101031611B1 (en) | Rotational coupling device | |
| CN103607097B (en) | A kind of square position type magnetism-gathering magnetic line structure for permanent magnetic vortex drive device | |
| CN201374639Y (en) | Non-contact axial magnetization multi-ring magnetic coupler | |
| US8393451B2 (en) | Rotational coupling device with wear compensation structure | |
| EP1893883A1 (en) | Rotational electromagnetic coupling device | |
| CN204103739U (en) | A kind of soft start permanent magnet eddy current coupling | |
| EP1893884A1 (en) | Rotational electromagnetic coupling device | |
| US8844701B2 (en) | Rotational coupling device with improved drive key retention structure | |
| CN216981769U (en) | Permanent magnet eddy current coupling | |
| CN113090760A (en) | Magnetic liquid sealing device | |
| CN112713814B (en) | Five-degree-of-freedom conical mixed excitation magnetic suspension switched reluctance motor | |
| CN203457031U (en) | Flat plate type magnet-gathering type magnetic circuit structure for permanent magnetic eddy current transmission device | |
| CN112398306B (en) | Low power sinusoidal torque output transmission | |
| CN112311197B (en) | 90-degree Halbach distributed double-layer permanent magnet rotor magnetic coupler | |
| CN103490586A (en) | Flat plate magnet collecting type magnetic circuit structure for permanent magnet synchronous transmission device | |
| CN212231321U (en) | Permanent magnet eddy current coupling | |
| CN103915980A (en) | Disc-shaped rotary-plate permanent magnetic coupler | |
| AU2011255229B2 (en) | Improved apparatus for transferring torque magnetically | |
| CN212012443U (en) | Axial permanent magnet eddy current coupling | |
| CN219372256U (en) | Air gap adjusting mechanism for permanent magnet and copper conductor of permanent magnet coupler | |
| CN112134437A (en) | Permanent magnet eddy current coupling | |
| CN115580102A (en) | Non-unbalance-load permanent magnet eddy current flexible coupling | |
| CN111600457A (en) | Axial permanent magnet eddy current coupling | |
| CN215370261U (en) | Permanent magnet transmission zero-leakage pump | |
| CN213817550U (en) | Double-cylinder type permanent magnetic coupler structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |