CN210404875U - Rare earth permanent magnet generator rotor with fastening ring - Google Patents
Rare earth permanent magnet generator rotor with fastening ring Download PDFInfo
- Publication number
- CN210404875U CN210404875U CN201920598886.2U CN201920598886U CN210404875U CN 210404875 U CN210404875 U CN 210404875U CN 201920598886 U CN201920598886 U CN 201920598886U CN 210404875 U CN210404875 U CN 210404875U
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- CN
- China
- Prior art keywords
- permanent magnet
- rotor
- rare earth
- rotor core
- fastening ring
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- Expired - Fee Related
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a tombarthite permanent magnet generator rotor with tight loop, including rotor core, magnet steel, tight loop, fix tile formula magnet steel on the rotor through tight loop and bolt. The thickness of the permanent magnet is higher than that of the boss of the rotor core, the middle of the permanent magnet is provided with a groove, two ends of the permanent magnet are tightly fixed with the rotor core through bolts, and the permanent magnet is tile-type magnetic steel. The fastening ring is matched with a groove in the middle of the permanent magnet, and the tile type magnetic steel is fixed on the rotor through the fastening ring and the bolt. The utility model discloses difficult damage ring, permanent magnet firm in connection on the rotor.
Description
Technical Field
The invention relates to a permanent magnet generator, in particular to a rare earth permanent magnet generator rotor with a fastening ring.
Background
The permanent magnet generator can be divided into an electric excitation generator and a rare earth permanent magnet generator, and the rare earth permanent magnet synchronous generator has the advantages of good characteristics, strong loading capacity, high reliability and excellent performance, and is widely applied to various fields. The rare earth permanent magnet is arranged on the rotor of the rare earth permanent magnet generator, most of the rare earth permanent magnet generator adopts a bonding and outsourcing fixing method, the bonding mode needs curing time, the process is complex, the defects of being not firm in bonding and not suitable for high-speed operation exist, the waste of materials is large, and the cost is increased. The rare earth permanent magnet generator has wide application range, including small, medium and large-sized ones, the rotating speed of the small and medium-sized permanent magnet generator is not more than 4000 rpm, the rotating speed of the low-speed wind driven generator is not more than 2000 rpm generally, but the rotating speed of the high-power high-speed permanent magnet generator used in the aviation field can reach 7000 rpm, and the outer diameter of the rotor is adhered with the permanent magnet, so that the centrifugal force of the permanent magnet is very large when the permanent magnet rotates at high speed and is much larger than that of the large turbonator, and the factors of infirm fixation of the permanent magnet, influence on the working safety and the like exist. When the permanent magnet generator is assembled and disassembled, the permanent magnet rotor and the stator are firmly adsorbed together under the action of a strong magnetic field, so that the assembling strength, the assembling complexity and the assembling danger are increased, and the stator winding is often damaged when the permanent magnet rotor is installed; or when the disk fixing bolt is locked, the strong magnetic attraction of the rotor absorbs the bolt and the tool to the surface of the rotor to cause the damage of the magnetic pole. Specifically, the original permanent magnet generator rotor is of an integral structure, when the permanent magnet generator rotor is connected with an engine, the permanent magnet rotor must be pulled out from a base by a large external force, the permanent magnet rotor is generally hung out by a crane, the base is fixed by a special tool, when the rotor is pulled out, the magnetic poles of the rotor or a stator winding is easily damaged due to the strong adsorption effect of a rare earth magnet, and the pulled integral permanent magnet rotor is mounted on an engine output shaft flange through a connecting piece by a high-strength metal bolt. When the connecting piece bolt is locked, the operation difficulty is high, the fastening bolt and a tool are easy to quickly attract the permanent magnet, the fragile rare earth magnetic pole is extremely easy to damage, and magnetic pole fragments, metal gaskets and the like are extremely difficult to clean; in addition, the rotor must be very careful after being mounted on the output flange of the generator to sleeve the whole machine base on the rotor, and the process is complex, dangerous and highly damaged.
In order to solve the problems existing above, the rare earth permanent magnet generator rotor with the fastening ring is provided, and the rare earth permanent magnet generator rotor has the advantages of simple process, difficult damage to the ring and firm connection of the magnetic steel on the rotor.
Disclosure of Invention
The invention aims to provide a rare earth permanent magnet generator rotor with a fastening ring, which comprises a rotor core, magnetic steel and the fastening ring, wherein the rotor core is formed by axially stacking a plurality of rotor punching sheets together, 6 spaced bosses are uniformly distributed on the periphery of the circumference of the rotor core, permanent magnets are placed in grooves formed by the bosses, the thickness of the permanent magnets is higher than that of the bosses of the rotor core, the middle of each permanent magnet is provided with a groove, two ends of each permanent magnet are tightly fixed with the rotor core through bolts, and each permanent magnet is tile-shaped magnetic steel. The fastening ring is matched with a groove in the middle of the permanent magnet, and the permanent magnet is fixed on the rotor through the fastening ring and a bolt, or the permanent magnet is fixed on a rotor core in a sticking mode.
Drawings
FIG. 1 is a structural diagram of a rare earth permanent magnet generator rotor with a fastening ring according to the present invention
FIG. 2 is a tile type magnetic steel structure diagram of the permanent magnet of the rare earth permanent magnet generator rotor with fastening ring of the invention
FIG. 3 is a structural diagram of a rare earth permanent magnet generator rotor with fastening rings according to the present invention
Description of reference numerals:
Detailed Description
The invention aims to provide a rare earth permanent magnet generator rotor with a fastening ring, which comprises a rotor core (2), a permanent magnet (1) and the fastening ring (3), wherein the rotor core (2) is formed by axially overlapping a plurality of rotor punching sheets, 6 spaced bosses (4) are uniformly distributed on the periphery of the circumference of the rotor core, the permanent magnet is placed in a groove formed by the bosses, the thickness of the permanent magnet is higher than that of the bosses of the rotor core, a groove (5) is formed in the middle of the permanent magnet, and two ends of the permanent magnet are tightly fixed with the rotor core through bolts (6). The fastening ring is matched with the groove of the permanent magnet, and the permanent magnet is fixed on the rotor through the fastening ring and the bolt. The permanent magnet can be fixed on the rotor core by bolts and sticking, or fixed on the rotor core only by bolts, or fixed on the rotor core only by sticking.
The permanent magnet material is rare earth permanent magnet material.
Embodiment two, as the utility model discloses a preferred embodiment, the permanent magnet can be tile formula magnet steel structure.
The further tile type magnetic steel material adopts a rare earth permanent magnetic material.
Further tile-type magnetic steel can be adhered to the rotor core in an adhering mode or fixed on the rotor core by bolts.
Further, the permanent magnet can be fixed on the rotor core by bolts and adhesion, or fixed on the rotor core only by bolts, or fixed on the rotor core only by adhesion.
Embodiment three, conduct the utility model discloses a preferred embodiment, the tight loop on the permanent magnet can set up at the both ends of permanent magnet, and the permanent magnet can be for tile formula magnet steel structure, and the mode of adoption pasting fixes tile formula magnet steel on rotor core earlier. When the rotor runs at a high speed, the fastening ring internally generates pretightening force, so that the running reliability of the motor is improved.
The further tile type magnetic steel material adopts a rare earth permanent magnetic material.
Further tile-type magnetic steel can be adhered to the rotor core in an adhering mode or fixed on the rotor core by bolts.
Further, the permanent magnet can be fixed on the rotor core by bolts and adhesion, or fixed on the rotor core only by bolts, or fixed on the rotor core only by adhesion.
Embodiment four, as the utility model discloses an preferred embodiment, the permanent magnet can be tile formula magnet steel structure, and the permanent magnet sets up recess quantity can be more than two, and every recess all can be provided with firm circle.
The further tile type magnetic steel material adopts a rare earth permanent magnetic material.
Further tile type magnetic steel can be pasted on the rotor core in a pasting mode or fixed on the rotor core by bolts.
Further, the permanent magnet can be fixed on the rotor core by bolts and adhesion, or fixed on the rotor core only by bolts, or fixed on the rotor core only by adhesion.
Claims (5)
1. The utility model provides a tombarthite permanent magnet generator rotor with tight loop, includes rotor core, permanent magnet, tight loop, its characterized in that: the rotor core is formed by axially overlapping a plurality of rotor punching sheets, 6 spaced bosses are uniformly distributed on the periphery of the rotor core, permanent magnets are placed in grooves formed by the bosses, and the thickness of each permanent magnet is higher than that of each boss of the rotor core.
2. The rare earth permanent magnet generator rotor with fastening rings of claim 1, wherein: the permanent magnet is provided with a groove, and two ends of the permanent magnet are tightly fixed with the rotor core through bolts; the fastening ring is matched with the groove of the permanent magnet, and the tile type magnetic steel is fixed on the rotor through the fastening ring and the bolt.
3. The rare earth permanent magnet generator rotor with fastening rings of claim 1, wherein: the permanent magnet material is a rare earth permanent magnet material.
4. The rare earth permanent magnet generator rotor with fastening rings of claim 1, wherein: the permanent magnet is pasted on the rotor iron core in a pasting mode.
5. The rare earth permanent magnet generator rotor with fastening rings of claim 1, wherein: the permanent magnet is tile type magnetic steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598886.2U CN210404875U (en) | 2019-04-28 | 2019-04-28 | Rare earth permanent magnet generator rotor with fastening ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920598886.2U CN210404875U (en) | 2019-04-28 | 2019-04-28 | Rare earth permanent magnet generator rotor with fastening ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210404875U true CN210404875U (en) | 2020-04-24 |
Family
ID=70344962
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920598886.2U Expired - Fee Related CN210404875U (en) | 2019-04-28 | 2019-04-28 | Rare earth permanent magnet generator rotor with fastening ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210404875U (en) |
-
2019
- 2019-04-28 CN CN201920598886.2U patent/CN210404875U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200424 |