CN1079593A - A kind of p-m rotor of squirrel-cage embedded-pole formula structure - Google Patents
A kind of p-m rotor of squirrel-cage embedded-pole formula structure Download PDFInfo
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- CN1079593A CN1079593A CN 92104199 CN92104199A CN1079593A CN 1079593 A CN1079593 A CN 1079593A CN 92104199 CN92104199 CN 92104199 CN 92104199 A CN92104199 A CN 92104199A CN 1079593 A CN1079593 A CN 1079593A
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- rotor
- bar
- polar caps
- conductive core
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Abstract
A kind of p-m rotor of squirrel-cage embedded-pole formula structure can be used for alternating current motor and generator.It has magnetic conductive core.It is characterized in that: outside magnetic conductive core, be surrounded by the mouse cage shelf that has caulking groove, be inlaid with the bar-shaped magnet that rare earth permanent-magnetic material is made in the caulking groove, there is polar caps on its top, the radian of polar caps is corresponding with the whole magnet pole widths of rotor, be with the guard ring that nonferromagnetic material is made outside polar caps, magnetic conductive core, mouse cage shelf, bar-shaped magnet, guard ring and polar caps are affixed mutually.Because the magnet of rare earth permanent-magnetic material is a rectangular tiles, and is easy to process.The force structure of rotor uses the common material manufacturing, and higher intensity is arranged.
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 objective of the invention is to invent a kind of rare-earth permanent magnet rotor of new-type structure, 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 invention 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 invention.
Accompanying drawing 2 is a drawing in side sectional elevation of the present invention.
Among the present invention, 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 present invention 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 present invention, 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 among the present invention 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 among the present invention 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 among the present invention 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 among the present invention, 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 92104199 CN1079593A (en) | 1992-06-04 | 1992-06-04 | A kind of p-m rotor of squirrel-cage embedded-pole formula structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92104199 CN1079593A (en) | 1992-06-04 | 1992-06-04 | A kind of p-m rotor of squirrel-cage embedded-pole formula structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1079593A true CN1079593A (en) | 1993-12-15 |
Family
ID=4940683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92104199 Pending CN1079593A (en) | 1992-06-04 | 1992-06-04 | A kind of p-m rotor of squirrel-cage embedded-pole formula structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1079593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029408A1 (en) * | 2014-08-28 | 2016-03-03 | 深圳市智旵振动机械有限公司 | Steel magnet body assembly |
-
1992
- 1992-06-04 CN CN 92104199 patent/CN1079593A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016029408A1 (en) * | 2014-08-28 | 2016-03-03 | 深圳市智旵振动机械有限公司 | Steel magnet body assembly |
| CN106663515A (en) * | 2014-08-28 | 2017-05-10 | 深圳市智旵振动机械有限公司 | Steel magnet body assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |