CN2121093U - Squirrel-cage permanent magnetism rotor - Google Patents
Squirrel-cage permanent magnetism rotor Download PDFInfo
- Publication number
- CN2121093U CN2121093U CN 92223566 CN92223566U CN2121093U CN 2121093 U CN2121093 U CN 2121093U CN 92223566 CN92223566 CN 92223566 CN 92223566 U CN92223566 U CN 92223566U CN 2121093 U CN2121093 U CN 2121093U
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- squirrel
- bar
- rotor
- shaped magnet
- cage
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model relates to a squirrel-cage permanent magnetism rotor, which can be used for an AC motor and a generator. The utility model comprises a guide magnetic core body, and is characterized in that the outside of the guide magnetic core body is wrapped with a squirrel-cage separating rack which is provided with a caulking groove; the squirrel-cage separating rack is made of non-ferromagnetic material. The inside of the caulking groove is enchased with a bar-shaped magnet which is made of rare earth permanent magnet material, and the outside of the bar-shaped magnet and the squirrel-cage separating rack is sheathed with a guard ring which is made of non-ferromagnetic material. The guide magnetic core body, the squirrel-cage separating rack, the bar-shaped magnet and the guard ring are all mutually fixed. Because the magnetic body made of rare earth permanent magnetism material is an oblong-shaped tablet, the process is very convenient. The stress structure of the rotor is made of common material, and has high strength.
Description
A kind of p-m rotor of squirrel-cage shaded-pole structure, it belongs to parts of electric driver, can be used for the alternating current motor and the generator of various requirement.
Because popularizing and development of electric power industry of AC network all uses motor to make power set in various device widely.Use the device structure of this electric driver simple, easy to use.But, make in electricity drives that output operating mode and requirement that requirement can the control break motor have low-speed big characteristic preferably along with the continuous development of technology, this is that general induction motor is not accomplished.In order to inherit the constructional simplicity of common AC motor, and obtain the controllability and the low-speed big characteristic of its operating mode, greatly develop the ac synchronous motor of rare-earth permanent magnet rotor now, can reach the purpose of controlled operation conditions by changing the frequency shift output speed of input current.And rare earth material has very high remnant field intensity and magnetic energy product, thereby good low-speed and large moment characteristics is arranged.But because rare earth permanent-magnetic material is a kind of very difficult material processed, it generally uses the processing method of powder metallurgy to make blank.Thereby manufacturing integral type rare earth permanent-magnetic material rotor is very difficult.Particularly large-sized rotor, its manufacturing process is just more complicated, to the requirement height of manufacturing equipment, decrease in yield.And also can make rotor strength descend because internal rotor loosens.
The purpose of this utility model is the rare-earth permanent magnet rotor of a kind of new-type structure of invention, and it uses the mode of mouse cage split-pole to obtain the rotor field, thereby simplified manufacturing technique reduces manufacturing cost greatly.
Structure of the present utility model as shown in Figure 1, it has magnetic conductive core 1, it is characterized in that: outside magnetic conductive core, be surrounded by the mouse cage shelf 2 that has caulking groove, mouse cage shelf 2 uses the nonferromagnetic material manufacturing, in the caulking groove of mouse cage shelf 2, be inlaid with the bar-shaped magnet 3 that rare earth permanent-magnetic material is made, outside bar-shaped magnet 3 and mouse cage shelf 2, be with the guard ring 4 that nonferromagnetic material is made, magnetic conductive core 1, mouse cage shelf 2, bar-shaped magnet 3 and guard ring 4 are affixed mutually.
Accompanying drawing 1 is a structure cutaway view of the present utility model.
Accompanying drawing 2 is a drawing in side sectional elevation of the present utility model.
In the utility model, the two sides, bar-shaped magnet 3 front and back (inside and outside) that rare earth permanent-magnetic material is made is two magnetic poles.When mounted, the bar-shaped magnet of on the rotor symmetric position, installing 3 just in time opposite to outer magnetic pole, the magnetic by magnetic conductive core 1 connects, and forms a pair of rotor magnetic pole, makes rotor have the magnetic circuit character of integral type p-m rotor.In the bar-shaped magnet 3 that embeds, how right can have, and the external pole polarity of adjacent several bar-shaped magnets 3 is identical, forms the rotor magnetic pole scope of a broad, can match with the magnet pole widths that the stator winding coil produces.Bar-shaped magnet 3 can a plurality of one group of arrangement, and the pole orientation between group is opposite, forms multisegmented rotor (as four utmost points, sextupole, the ends of the earth etc.), satisfies the needs of different motors.
The method that the utility model uses magnetic conductive core to inlay the bar-shaped magnet of use rare earth permanent-magnetic material manufacturing outward forms the whole pole pair of rotor, thereby reaches the effect of using whole rare earth permanent-magnetic material to make rotor.Because the magnet processed of rare earth permanent-magnetic material is to make rectangular tiles, thereby process very conveniently, be convenient to mechanization and produce in enormous quantities.The force structure of rotor uses the common material manufacturing, and higher intensity is arranged.The allowance of bar-shaped magnet is very little, rare earth material that can conserve expensive.
In the utility model, the bar-shaped magnet 3 of rare earth material manufacturing can use the Nd-Fe-B series rareearth magnetic material, also can use cerium cobalt based material.Bar-shaped magnet 3 can be an integral body, also can be to make fritter to be spliced along its length.Such magnet has more versatility, for the rotor of different length, only need be spliced just by the fritter magnet of different numbers.
Magnetic conductive core 1 in the utility model can use the rotor structure form of common electric machine, use low-carbon (LC) or less than the medium carbon steel manufacturing of 35#, also can adopt mandrel of the higher made of intensity, outside mandrel, be superimposed with silicon steel sheet, to increase its permeability, even can use common squirrel cage motor rotor retrofit, remove the mouse cage coil of the copper bar composition of embedding.
Guard ring 4 in the utility model also uses the nonferromugnetic material manufacturing, also can use stainless steel, titanium alloy and as nonmetallic materials such as fiberglass.The effect of guard ring 4 is to protect rotor when high speed rotating, and bar-shaped magnet 3 is not subjected to action of centrifugal force and throws away, thereby certain intensity requirements should be arranged.
Mutual affixed of magnetic conductive core 1 in the utility model, mouse cage shelf 2, bar-shaped magnet 3 and guard ring 4 can use various securing members to connect, as bolt, rivet, welding etc., and their mixing.The form that also can adopt plastic bonding to solidify is bonded as one above-mentioned part as using epoxy resin, solidifies then, forms a solid integral body, can bear higher centrifugal force, is used for high rotational speed.
Claims (1)
1, a kind of p-m rotor of squirrel-cage shaded-pole structure, it has magnetic conductive core 1, it is characterized in that: outside magnetic conductive core, be surrounded by the mouse cage shelf 2 that has caulking groove, mouse cage shelf 2 uses the nonferromagnetic material manufacturing, in the caulking groove of mouse cage shelf 2, be inlaid with the bar-shaped magnet 3 that rare earth permanent-magnetic material is made, outside bar-shaped magnet 3 and mouse cage shelf 2, be with the guard ring 4 that nonferromagnetic material is made, magnetic conductive core 1, mouse cage shelf 2, bar-shaped magnet 3 and guard ring 4 are affixed mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223566 CN2121093U (en) | 1992-06-04 | 1992-06-04 | Squirrel-cage permanent magnetism rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223566 CN2121093U (en) | 1992-06-04 | 1992-06-04 | Squirrel-cage permanent magnetism rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2121093U true CN2121093U (en) | 1992-11-04 |
Family
ID=4966238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92223566 Granted CN2121093U (en) | 1992-06-04 | 1992-06-04 | Squirrel-cage permanent magnetism rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2121093U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684339A (en) * | 2012-05-23 | 2012-09-19 | 佛山市顺德区金泰德胜电机有限公司 | Permanent magnet rotor |
-
1992
- 1992-06-04 CN CN 92223566 patent/CN2121093U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102684339A (en) * | 2012-05-23 | 2012-09-19 | 佛山市顺德区金泰德胜电机有限公司 | Permanent magnet rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |