CN2121094U - Squirrel-cage permanent magnetism rotor - Google Patents
Squirrel-cage permanent magnetism rotor Download PDFInfo
- Publication number
- CN2121094U CN2121094U CN 92223568 CN92223568U CN2121094U CN 2121094 U CN2121094 U CN 2121094U CN 92223568 CN92223568 CN 92223568 CN 92223568 U CN92223568 U CN 92223568U CN 2121094 U CN2121094 U CN 2121094U
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- rotor
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- bar
- shaped magnet
- squirrel
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Abstract
The utility model relates to a squirrel-cage permanent magnetism rotor which can be used for an alternating current motor and a power generator, and is provided with a magnetic-guiding core body. The utility model is characterized in that the external part of the magnetic-guiding core body is wrapped with a squirrel-cage insulating frame with a caulking groove; the inner part of the caulking groove is inlaid with a bar-shaped magnet made of permanent magnetic RE material; a pole cap is arranged at the top end of the bar-shaped magnet, and the radian of the pole cap is corresponding with the width of the magnetic pole of the whole body of a rotor. A guard ring made of nonferromagnetic material is sheathed outside the pole cap. The magnetic-guiding core body, the squirrel-cage insulating frame, the bar-shaped magnet, the guard ring and the pole cap are connected with each other. The magnet of the permanent magnetic RE material is a small rectangular piece, so the utility model is very convenient to process. The force-bearing structure of the rotor is manufactured by common materials, so the utility model has high strength.
Description
A kind of p-m rotor of squirrel-cage embedded-pole formula 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 squirrel-cage embedded-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, the polar caps of being made by ferromagnetic material 5 is arranged on bar-shaped magnet 3 tops, the radian of polar caps 5 is corresponding with the whole magnet pole widths of rotor, be with the guard ring 4 that nonferromagnetic material is made outside polar caps 5, magnetic conductive core 1, mouse cage shelf 2, bar-shaped magnet 3, guard ring 4 and polar caps 5 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, magnetic by magnetic conductive core 1 connects, form a pair of rotor magnetic pole, the polar caps of being made by ferromagnetic material 5 is arranged on bar-shaped magnet 3 tops, the effect of polar caps 5 is that magnet pole widths and stator are adapted, and makes rotor have the magnetic circuit character of integral type p-m rotor.Bar-shaped magnet 3 under same polar caps 5 can have a plurality of, and the external pole polarity of these bar-shaped magnets 3 is identical, plays the effect of a big magnet.Polar caps 5 can have a plurality of, and pole orientation therebetween is opposite, forms multisegmented rotor (as four utmost points, sextupole, the ends of the earth etc.), satisfies the needs of different motors.
The bar-shaped magnet that the utility model uses magnetic conductive core to inlay outward and uses rare earth permanent-magnetic material to make also forms the whole pole pair of rotor with the method that covers polar caps, thereby reaches the effect of using whole rare earth permanent-magnetic material manufacturing 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.
Mouse cage shelf 2 in the utility model should use the nonferromugnetic material manufacturing, as stainless steel, aluminium alloy, titanium alloy, and various nonmetallic materials.Its effect is to keep bar-shaped magnet 3 to be in definite position, to avoid rotor bar-shaped magnet 3 stressed generation displacements when working.
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.
Polar caps 5 in the utility model uses the nonferromugnetic material manufacturings, as pure iron, silicon steel sheet and beryllium alloy etc. not, higher permeability should be arranged.
Mutual affixed of magnetic conductive core 1 in the utility model, mouse cage shelf 2, bar-shaped magnet 3, guard ring 4 and polar caps 5 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 embedded-pole formula 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, the polar caps of being made by ferromagnetic material 5 is arranged on bar-shaped magnet 3 tops, the radian of polar caps 5 is corresponding with the whole magnet pole widths of rotor, be with the guard ring 4 that nonferromagnetic material is made outside polar caps 5, magnetic conductive core 1, mouse cage shelf 2, bar-shaped magnet 3, guard ring 4 and polar caps 5 are affixed mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223568 CN2121094U (en) | 1992-06-04 | 1992-06-04 | Squirrel-cage permanent magnetism rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92223568 CN2121094U (en) | 1992-06-04 | 1992-06-04 | Squirrel-cage permanent magnetism rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2121094U true CN2121094U (en) | 1992-11-04 |
Family
ID=4966240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92223568 Granted CN2121094U (en) | 1992-06-04 | 1992-06-04 | Squirrel-cage permanent magnetism rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2121094U (en) |
-
1992
- 1992-06-04 CN CN 92223568 patent/CN2121094U/en active Granted
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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 |