CN212258752U - Cylindrical permanent magnet eddy current coupling - Google Patents
Cylindrical permanent magnet eddy current coupling Download PDFInfo
- Publication number
- CN212258752U CN212258752U CN202021638604.6U CN202021638604U CN212258752U CN 212258752 U CN212258752 U CN 212258752U CN 202021638604 U CN202021638604 U CN 202021638604U CN 212258752 U CN212258752 U CN 212258752U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- wedge
- rotor
- speed regulation
- shaft
- 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.)
- Expired - Fee Related
Links
- 230000008878 coupling Effects 0.000 title claims abstract description 20
- 238000010168 coupling process Methods 0.000 title claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 20
- 230000033228 biological regulation Effects 0.000 claims abstract description 29
- 239000004020 conductor Substances 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 229910052742 iron Inorganic materials 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Dynamo-Electric Clutches, Dynamo-Electric Brakes (AREA)
Abstract
The utility model belongs to the technical field of couplings, in particular to a cylindrical permanent magnet eddy current coupling, which comprises a cylindrical conductor rotor, a permanent magnet rotor and a speed regulating device; the permanent magnet rotor comprises a wedge-shaped block retainer, a pyramid platform and a plurality of wedge-shaped sliding blocks, the pyramid platform is connected with the input shaft through a sliding key, and the wedge-shaped sliding blocks are slidably arranged in wedge-shaped grooves of the pyramid platform; the cylindrical conductor rotor is connected with a flange on the output shaft through a bolt; the speed regulating device comprises a speed regulating hollow shaft, a speed regulating drive plate, an elastic gear and a second angular contact bearing; the speed regulation hollow shaft is connected with the pyramid platform through a flange, and the speed regulation drive plate is arranged on the speed regulation hollow shaft through a second angular contact bearing and an elastic retainer ring. The coupler has compact structure, can realize stepless speed regulation and has larger torque density. Because the moving direction of the pyramid frustum is vertical to the magnetic force direction of the permanent magnet, the resistance applied when the permanent magnet rotor is adjusted to move is small, namely the required driving force is small, and the operation is easy.
Description
Technical Field
The utility model belongs to the technical field of the shaft coupling, concretely relates to cylindric permanent magnetism eddy current coupling.
Background
The cylindrical permanent magnet eddy current coupling is a common coupling in industrial production and adopts the slip of an inner rotor and an outer rotor to generate transmission torque. Under the condition that the slip difference between the inner rotor and the outer rotor is the same, the larger the torque which can be transmitted by the permanent magnet eddy current coupling is, the better the performance of the coupling is represented, and the torque density of the permanent magnet eddy current coupling is called in industrial application. The structural size of most of the couplings used at present is fixed and unchanged, so that the working condition of the coupling is limited, and once new technical parameters are needed, corresponding brand new parts need to be designed and manufactured.
Disclosure of Invention
Aiming at the non-adjustability of the output torque of the coupler, the novel cylindrical permanent magnet eddy current coupler is compact in structure, can realize stepless speed regulation and has large torque density. Because the moving direction of the pyramid frustum is vertical to the magnetic force direction of the permanent magnet, the resistance applied when the permanent magnet rotor is adjusted to move is small, namely the required driving force is small, and the operation is easy.
The technical scheme adopted by the novel method is as follows: a cylindrical permanent magnet eddy current coupling comprises a cylindrical conductor rotor, a permanent magnet rotor and a speed regulating device; the permanent magnet rotor comprises a wedge-shaped block retainer, a pyramid platform and a plurality of wedge-shaped sliding blocks, the pyramid platform is connected with the input shaft through a sliding key, the wedge-shaped sliding blocks are slidably mounted in wedge-shaped grooves of the pyramid platform and can freely slide in the grooves relatively, and the wedge-shaped sliding blocks are limited by the wedge-shaped block retainer and only allow movement in the radial direction. The cylindrical conductor rotor is connected with a flange on the output shaft through a bolt; the speed regulating device on the input shaft comprises a speed regulating hollow shaft, a speed regulating drive plate, an elastic retainer ring and a second angular contact bearing; the speed regulation hollow shaft is connected with the pyramid platform through a flange, the speed regulation drive plate is arranged on the speed regulation hollow shaft through a second angular contact bearing and an elastic retainer ring, the speed regulation drive plate and the angular contact bearing are axially positioned and fixed on the speed regulation hollow shaft through the elastic retainer ring, and the angular contact bearing is a pair of bearings which are oppositely arranged and can bear bidirectional axial force. In the speed regulation process, the speed regulation drive plate is pushed along the axial direction to drive the pyramid table to move along the sliding key; the wedge-shaped sliding block moves along the radial direction under the pushing of the pyramid platform, and the size of an air gap between the wedge-shaped sliding block and the cylindrical conductor rotor and the size of a relative area of the wedge-shaped sliding block are changed, so that the transmission torque is influenced, and the speed regulation function is realized.
Furthermore, the wedge-shaped sliding block is composed of a neodymium iron boron material on the surface layer and a back yoke iron.
Further, the cylindrical conductor rotor is composed of a copper conductor layer and back iron.
Further, a first angular contact bearing on the output shaft is positioned by a shoulder; the first angular contact bearing on the input shaft is positioned by shoulders on the input shaft and the cylindrical conductor rotor, supporting the rotational movement of the input shaft and the output shaft.
This neotype beneficial effect: the cylindrical permanent magnet eddy current coupling is compact in structure, capable of achieving stepless speed regulation and high in torque density. Because the moving direction of the pyramid frustum is vertical to the magnetic force direction of the permanent magnet, the resistance applied when the permanent magnet rotor is adjusted to move is small, namely the required driving force is small, and the operation is easy.
Description of the drawings:
FIG. 1 is a schematic longitudinal sectional view showing a maximum air gap in the first embodiment;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a schematic longitudinal sectional view showing a state where air gaps are minimized in the first embodiment;
fig. 4 is a sectional view a-a of fig. 3.
The specific implementation mode is as follows:
example one
Referring to the figures, the cylindrical permanent magnet eddy current coupling comprises a cylindrical conductor rotor 1, a sliding key 2, an output shaft 3, a first angular contact bearing 4, a bolt 5, a wedge-shaped block retainer 6, a speed regulation hollow shaft 7, a speed regulation dial 8, an elastic retainer ring 9, an input shaft 10, a second angular contact bearing 11, a frustum pyramid 12, a wedge-shaped sliding block 13, a copper conductor layer 14 and back iron 15. The wedge-shaped block retainer 6, the pyramid platform 12 and the wedge-shaped sliding blocks 13 form a permanent magnet rotor, the pyramid platform 12 is connected with the input shaft 10 through the sliding key 2, the wedge-shaped sliding blocks 13 and the pyramid platform 12 are matched through wedge-shaped grooves and can freely slide in the grooves relatively, and the wedge-shaped sliding blocks 13 are limited by the wedge-shaped block retainer 6 and only allow movement in the radial direction. The wedge-shaped sliding block 13 is made of neodymium iron boron materials on the surface layer and back yoke iron; the cylindrical conductor rotor 1 is formed by a copper conductor layer 14 and a back iron 15, and the cylindrical conductor rotor 1 is connected with a flange on an output shaft 3 through a bolt 5; the first angular contact bearing 4 is positioned by the input shaft 10, the output shaft 3 and the shaft shoulder of the cylindrical conductor rotor 1, and supports the rotation motion of the input shaft 10 and the output shaft 3; the hollow speed regulation shaft 7, the speed regulation dial 8, the circlip 9 and the second angular contact bearing 11 form a speed regulation device on the input shaft 10. The speed regulation hollow shaft 7 is connected with the pyramid platform 12 through a flange, and the speed regulation drive plate 8 and the second angular contact bearing 11 are axially positioned and fixed on the speed regulation hollow shaft 7 through the elastic retainer ring 9. The second angular contact bearing 11 is a pair of bearings installed oppositely and can bear bidirectional axial force; in the speed regulation process, the speed regulation drive plate 8 is pushed along the axial direction to drive the pyramid table 12 to move along the sliding key 2. The wedge-shaped sliding block 13 moves along the radial direction under the pushing of the pyramid table 12, and the size of an air gap and the size of a relative area between the wedge-shaped sliding block and the cylindrical conductor rotor 1 are changed, so that the transmission torque is influenced, and the speed regulation function is realized. The size of the air gap is marked in fig. 2 and 4 as the maximum range of speed regulation, and the specific size depends on the size of the coupling structure.
The cylindrical permanent magnet eddy current coupler consists of a permanent magnet rotor, a conductor rotor and a speed regulating device, wherein the conductor rotor is connected with the permanent magnet rotor through an air gap and rotates around respective axes. The input shaft and the permanent magnet rotor rotate synchronously, the permanent magnet rotor and the conductor rotor move relatively, and then an eddy current electric field is generated on the conductor to form an induction magnetic field. The formed induction magnetic field interacts with the magnetic field of the permanent magnet, so that the conductor rotor rotates in the same direction under the action of the magnetic field force, and then the torque is transmitted to the output shaft from the input shaft. The speed regulating driving plate on the input shaft can move axially to push the pyramid table, so that the wedge-shaped sliding block moves radially to change the air gap and the relative area between the wedge-shaped sliding block and the conductor rotor, thereby influencing the magnitude of the transmission torque and realizing the speed regulating function.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. A cylindric permanent magnetism eddy current coupling which characterized in that: the coupler comprises a cylindrical conductor rotor (1), a permanent magnet rotor and a speed regulating device; the permanent magnet rotor comprises a wedge-shaped block retainer (6), a frustum pyramid (12) and a plurality of wedge-shaped sliding blocks (13), the frustum pyramid (12) is connected with the input shaft (10) through a sliding key (2), and the wedge-shaped sliding blocks (13) are slidably arranged in wedge-shaped grooves of the frustum pyramid (12); the cylindrical conductor rotor (1) is connected with a flange on the output shaft (3) through a bolt (5); the speed regulating device comprises a speed regulating hollow shaft (7), a speed regulating drive plate (8), an elastic retainer ring (9) and a second angular contact bearing (11); the speed regulation hollow shaft (7) is connected with the pyramid platform (12) through a flange, and the speed regulation drive plate (8) is arranged on the speed regulation hollow shaft (7) through a second angular contact bearing (11) and an elastic retainer ring (9).
2. A cylindrical permanent magnet eddy current coupling in accordance with claim 1, wherein: the cylindrical conductor rotor (1) is composed of a copper conductor layer (14) and back iron (15).
3. A cylindrical permanent magnet eddy current coupling in accordance with claim 1, wherein: the first angular contact bearing (4) on the output shaft (3) is positioned by a shaft shoulder; the first angular contact bearing (4) on the input shaft (10) is positioned by the input shaft (10) and a shaft shoulder on the cylindrical conductor rotor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021638604.6U CN212258752U (en) | 2020-08-10 | 2020-08-10 | Cylindrical permanent magnet eddy current coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021638604.6U CN212258752U (en) | 2020-08-10 | 2020-08-10 | Cylindrical permanent magnet eddy current coupling |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212258752U true CN212258752U (en) | 2020-12-29 |
Family
ID=73981642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021638604.6U Expired - Fee Related CN212258752U (en) | 2020-08-10 | 2020-08-10 | Cylindrical permanent magnet eddy current coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212258752U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786536A (en) * | 2020-08-10 | 2020-10-16 | 哈工大机电工程(嘉善)研究院 | Cylindrical permanent magnet eddy current coupling |
-
2020
- 2020-08-10 CN CN202021638604.6U patent/CN212258752U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111786536A (en) * | 2020-08-10 | 2020-10-16 | 哈工大机电工程(嘉善)研究院 | Cylindrical permanent magnet eddy current coupling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102324829B (en) | Adjustable axial asynchronous magnetic force coupler | |
| CN107516970B (en) | A kind of permanent-magnet coupler of adjustable speed | |
| CN203457028U (en) | Coaxial sleeve type permanent magnetic eddy current coupling employing magnet-gathering type magnetic circuit structure | |
| CN106655706A (en) | Compound speed regulation shaft-type magnetic coupling | |
| CN102969868A (en) | Disc-shaped asynchronous magnetic coupling and speed adjustment method | |
| CN111810254B (en) | Induced draft fan steam-electricity dual-drive system and operation control method thereof | |
| CN212258752U (en) | Cylindrical permanent magnet eddy current coupling | |
| CN102969867A (en) | Magnetic governor with automatic transmission ability and speed governing method thereof | |
| CN201918878U (en) | Radial-direction permanent-magnet coupling driver | |
| CN203788125U (en) | Axial permanent magnetic gear capable of bi-directional excitation | |
| CN108199562A (en) | A kind of integrated form permanent magnetic transmission device of coaxial both-end output | |
| CN100406782C (en) | Magnetic gear wheel with collar groove permanent magnetic amplitude structure and magnetic gear wheel set | |
| CN111786536A (en) | Cylindrical permanent magnet eddy current coupling | |
| CN106787604B (en) | Multi-slip cascade permanent magnet speed regulating device | |
| CN103490589B (en) | A kind of coaxial sleeve cartridge type permanent magnet eddy current coupling adopting magnetism-gathering magnetic line structure | |
| CN103618433B (en) | A kind of socket type magnetism-gathering magnetic line structure for permanent magnetic vortex drive device | |
| CN204145332U (en) | precession type stepping motor | |
| CN211046724U (en) | Cylinder type magnetic wheel transmission device | |
| CN212726821U (en) | Disc type eddy current permanent magnet device | |
| CN201699567U (en) | Radial permanent-magnet magnetic force shaft coupling | |
| CN205792179U (en) | Adjustable speed umbrella-type magnetic coupling | |
| CN211259352U (en) | Rolling bearing based on magnetic fluid lubrication | |
| CN211557122U (en) | Magnetic force decelerator | |
| CN209419468U (en) | A kind of novel limited-moment permanent magnetic coupling | |
| CN209562371U (en) | A kind of novel adjustable speed drum type brake permanent magnet eddy current coupling |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |