CN205647075U - Electric motor rotor and permanent -magnet machine - Google Patents
Electric motor rotor and permanent -magnet machine Download PDFInfo
- Publication number
- CN205647075U CN205647075U CN201620067147.7U CN201620067147U CN205647075U CN 205647075 U CN205647075 U CN 205647075U CN 201620067147 U CN201620067147 U CN 201620067147U CN 205647075 U CN205647075 U CN 205647075U
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- magnet steel
- rotor
- rotating shaft
- extremity piece
- sheath
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Abstract
The utility model discloses an electric motor rotor and permanent -magnet machine. This electric motor rotor includes first pivot extremity piece (1), pivot extremity piece magnet steel (2) and the second pivot extremity piece (3) of following the axial and setting gradually, is connected with between first pivot extremity piece (1) and the second pivot extremity piece (3) sheath (4), and magnet steel (2) cover is established in sheath (4), and magnet steel (2) are the eccentric solid magnet steel or the solid magnet steel of cutting edge. According to the utility model discloses an electric motor rotor can effectively reduce high electric motor rotor's eddy current loss.
Description
Technical field
This utility model relates to technical field of motors, in particular to a kind of rotor and
Magneto.
Background technology
High-speed electric expreess locomotive is high due to power density, and volume is little, heat radiation relatively difficulty, permanent magnet pole
Yi Yin overheated generation irreversible demagnetization, therefore prevents the overheated generation of high-speed electric expreess locomotive permanent magnet irreversible
Demagnetization, particularly important for high-speed permanent magnet motor.
Wind moussing loss and rotor surface added losses that rotor surface produces are high speed rotor of motor
The major part of loss.Run by rotor height rotating speed and affected, the wind abrasion of rotor surface
Consumption will increase considerably；Additionally, affected, at rotor permanent magnet by high-frequency harmonic magnetic field in air gap
Surface will produce eddy-current loss, and for using alloy sleeve to reinforce the high speed of permanent magnet forever
Magnet rotor, then also easily produce bigger eddy-current loss in rotor jacket.
Owing to high-speed electric expreess locomotive is limited by rotor cooling condition, a small amount of heat of internal rotor also can
Increase substantially the temperature of rotor permanent magnet, although the loss occupancy volume of rotor portion is relative
Less, but the most easily cause permanent magnet high temperature loss of excitation, the most how to reduce high speed rotor eddy current
Loss is that high-speed electric expreess locomotive designs the problem that must take into.
Existing syllogic high speed rotor uses cylindrical, massive magnetic steel structure, although motor gas-gap
Harmonic content is the most relatively low, but high speed rotor of motor eddy-current loss is very sensitive to higher hamonic wave,
Therefore high speed rotor of motor still can be caused relatively maelstrom to be lost by motor gas-gap harmonic wave.
Utility model content
This utility model embodiment provides a kind of rotor and magneto, it is possible to effectively drop
The eddy-current loss of low clearance rotor.
For solving above-mentioned technical problem, according to an aspect of the present utility model, it is provided that a kind of
Rotor, it is characterised in that include the first rotating shaft extremity piece, the magnet steel set gradually vertically
With the second rotating shaft extremity piece, connect between the first rotating shaft extremity piece and the second rotating shaft extremity piece and have sheath, magnetic
Steel cage is located in sheath, and magnet steel is eccentric solid magnet steel or the solid magnet steel of trimming.
As preferably, magnet steel is eccentric solid magnet steel, and the cross section of magnet steel is oval, oval
Two short axle side trimmings.
As preferably, magnet steel is eccentric solid magnet steel, and the cross section of magnet steel includes be positioned at both sides two
Individual semicircle and be connected to the rectangle between two semicircles, the connection edge lengths of rectangle and semicircle
Diameter is identical.
As preferably, magnet steel is the solid magnet steel of trimming, the both sides trimming of magnet steel, and both sides trimming
Length identical, both sides trimming is along the centrosymmetry of magnet steel.
As preferably, the inner hole section of sheath matches with the cross section of magnet steel.
As preferably, the first rotating shaft extremity piece includes the first axial boss, the second rotating shaft extremity piece bag
Having included the second axial boss, the first end of sheath is set in the first axial boss, the of sheath
Two ends are set in the second axial boss.
As preferably, the first rotating shaft extremity piece is one-body molded with sheath, and the second rotating shaft extremity piece includes
Second axial boss, sheath is set in the second axial boss.
As preferably, the first rotating shaft extremity piece is titanium alloy or nickel-base alloy.
As preferably, the second rotating shaft extremity piece is that non-magnet material is made.
As preferably, magnet steel magnetizes after using permanent magnet material and makes.
As preferably, the magnetizing direction of magnet steel and differently-oriented directivity all parallel with trimming or with bias side
To parallel.
As preferably, sheath is interference fit with magnet steel and the second rotating shaft extremity piece.
According to another aspect of the present utility model, it is provided that a kind of motor, including rotor,
This rotor is above-mentioned rotor.
According to rotor of the present utility model, including the first rotating shaft end set gradually vertically
Part, magnet steel and the second rotating shaft extremity piece, connect between the first rotating shaft extremity piece and the second rotating shaft extremity piece and have
Sheath, magnet steel is located in sheath, and magnet steel is eccentric solid magnet steel or the solid magnet steel of trimming.
The cylindrical, massive magnet steel used for the high-speed permanent magnetic rotor of existing syllogic, sets it
Count into the solid magnet steel of trimming or eccentric solid magnet steel, can effectively reduce high-speed electric expreess locomotive
Higher hamonic wave, thus reduce rotor eddy-current loss, improve electric efficiency；Meanwhile, permissible
The trimming of magnet steel itself and the eccentric direction is utilized to magnetize orientation positions direction, it is to avoid additionally to add
Work telltale mark, improves the intensity of magnet steel.
Accompanying drawing explanation
Fig. 1 is the decomposition chart of the rotor of this utility model first embodiment；
Fig. 2 is the decomposition chart of the rotor of this utility model the second embodiment；
Fig. 3 is the front view of the solid magnet steel of bias of the rotor of this utility model embodiment；
Fig. 4 is the axonometric chart of the solid magnet steel of bias of the rotor of this utility model embodiment；
Fig. 5 is the front view of the solid magnet steel of trimming of the rotor of this utility model embodiment；
Fig. 6 is the axonometric chart of the solid magnet steel of trimming of the rotor of this utility model embodiment.
Description of reference numerals: 1, the first rotating shaft extremity piece；2, magnet steel；3, the second rotating shaft extremity piece；
4, sheath；5, the second axial boss.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings, but
Not as to restriction of the present utility model.
In figure, arrow represents the magnetizing direction of magnet steel.
Refer to shown in Fig. 1 to Fig. 6, according to embodiment of the present utility model, rotor bag
Include the first rotating shaft extremity piece 1, magnet steel 2 and the second rotating shaft extremity piece 3 set gradually vertically, first
Connecting between rotating shaft extremity piece 1 and the second rotating shaft extremity piece 3 has sheath 4, magnet steel 2 to be located at sheath 4
In, magnet steel 2 is eccentric solid magnet steel or the solid magnet steel of trimming.
The cylindrical, massive magnet steel used for the high-speed permanent magnetic rotor of existing syllogic,
It is designed to the solid magnet steel of trimming or eccentric solid magnet steel, can effectively reduce High-speed Electric
The higher hamonic wave of machine, thus reduce rotor eddy-current loss, improve electric efficiency；Meanwhile,
The trimming of magnet steel itself and the eccentric direction can be utilized, it is to avoid volume to magnetize orientation positions direction
Outer processing telltale mark, improves the intensity of magnet steel.
In one embodiment, magnet steel 2 is eccentric solid magnet steel, and the cross section of magnet steel 2 is oval
Shape, two oval short axle side trimmings.
In conjunction with seeing shown in Fig. 3 and Fig. 4, in first embodiment of the present utility model, magnetic
Steel 2 is eccentric solid magnet steel, and the cross section of magnet steel 2 includes two semicircles and the company being positioned at both sides
Being connected on the rectangle between two semicircles, the connection edge lengths of rectangle is identical with half diameter of a circle.Square
Shape is connected with two semicircles, forms ellipsoid like structure, and two sides of rectangle are tangent with semicircle,
Two sides form the structure similar with trimming such that it is able to ensure that magnet steel effectively reduces High-speed Electric
The higher hamonic wave of machine, reduces rotor eddy-current loss.
In conjunction with seeing shown in Fig. 5 and Fig. 6, in second embodiment of the present utility model, magnetic
Steel 2 is the solid magnet steel of trimming, the both sides trimming of magnet steel 2, and the length of both sides trimming is identical,
Both sides trimming is along the centrosymmetry of magnet steel 2.Both sides trimming centrosymmetry so that both sides trimming is not
Only length is identical, and parallel, it is possible to ensure that magnet steel 2 is in high-speed electric expreess locomotive work process transfer
The harmony of kinetic moment, it is ensured that the rotating property of high-speed electric expreess locomotive, can ensure that magnet steel is effective simultaneously
Reduce the higher hamonic wave of high-speed electric expreess locomotive, reduce rotor eddy-current loss.
The inner hole section of sheath 4 matches with the cross section of magnet steel 2, to ensure that magnet steel 2 can be very
Load well in sheath 4, and will not and sheath 4 between occur relative displacement.Such as, right
For the solid magnet steel of trimming, the endoporus of sheath 4 also has a trimming, and with the cross section of magnet steel
Shape is the same, thus ensures that magnet steel can be fitted with the inwall of sheath 4 well.
In the present embodiment, the first rotating shaft extremity piece 1 is one-body molded with sheath 4, the second rotating shaft end
Part 3 includes the second axial boss 5, and sheath 4 is set in the second axial boss 5.First turn
The end of axle head part 1 forms cavity, and the part with cavity forms sheath 4, and solid magnet steel loads
In this cavity, then by the second axial boss 5 axial compression of the second rotating shaft extremity piece 3, from
And solid magnet steel is firmly secured in the cavity of the first rotating shaft extremity piece 1.
Owing to the first rotating shaft extremity piece 1 needs mounting magnetic steel 2, and ensure that magnet steel 2 is running up
During be effectively protected, therefore the first rotating shaft extremity piece 1 uses titanium alloy or nickel-base alloy etc.
High-strength material is made.When rotating shaft high speed rotating, owing to the protection of the first rotating shaft extremity piece 1 is made
With, it is ensured that the safe operation of p-m rotor.
The cross sectional shape of the second axial boss 5 of the second rotating shaft extremity piece 3 and the cross section shape of magnet steel 2
Shape is identical so that the second axial boss 5 can successfully install the end into the first rotating shaft extremity piece 1
In the cavity in portion.
Second rotating shaft extremity piece 3 is made for non-magnet material, can play the effect every magnetic, thus
The service behaviour of magnet steel is effectively ensured.
Preferably, magnet steel 2 magnetizes after using the permanent magnet materials such as neodymium iron boron and makes.After magnetize technique
For the technique magnetized again after installing magnet steel, the demagnetization of rotating shaft hot charging can be prevented effectively from, it is ensured that magnet steel
Magnetic.
The magnetizing direction of magnet steel 2 and differently-oriented directivity are all parallel with trimming or parallel with eccentric direction,
The trimming of magnet steel itself and the eccentric direction can be utilized, it is to avoid volume to magnetize orientation positions direction
Outer processing telltale mark, improves the intensity of magnet steel.
Sheath 4 is interference fit with magnet steel 2 and the second rotating shaft extremity piece 3.Pacify at rotor
After installing into, the first end face of solid magnet steel and the cavity circular bottom surface laminating of the first rotating shaft extremity piece 1,
The end face laminating of the second axial boss of the second end face and the second rotating shaft extremity piece 3, the first rotating shaft end
Part 1 fits towards the anchor ring of the second rotating shaft extremity piece 3 and the step surface of the second rotating shaft extremity piece 3.
In the most unshowned embodiment, it is axial that the first rotating shaft extremity piece 1 includes first
Boss, the second rotating shaft extremity piece 3 includes the second axial boss 5, and the first end of sheath 4 is set in
In first axial boss, the second end of sheath 4 is set in the second axial boss 5.Sheath 4
And the first axial boss, between the second axial boss 5 and magnet steel 2, it is interference fit, with
Ensure the stability of sheath 4 and other respective outer side edges, it is ensured that the service behaviour of magnet steel 2.
According to embodiment of the present utility model, motor includes rotor, and this rotor is upper
The rotor stated.
Certainly, it is above preferred implementation of the present utility model.It should be pointed out that, for this skill
For the those of ordinary skill in art field, on the premise of without departing from this utility model ultimate principle,
Can also make some improvements and modifications, these improvements and modifications are also considered as guarantor of the present utility model
Protect scope.
Claims (14)
1. a rotor, it is characterized in that, including the first rotating shaft extremity piece (1) set gradually vertically, magnet steel (2) and the second rotating shaft extremity piece (3), connect between described first rotating shaft extremity piece (1) and described second rotating shaft extremity piece (3) and have sheath (4), described magnet steel (2) is located in sheath (4), and described magnet steel (2) is eccentric solid magnet steel or the solid magnet steel of trimming.
Rotor the most according to claim 1, it is characterised in that described magnet steel (2) is eccentric solid magnet steel, the cross section of described magnet steel (2) is oval, two short axle side trimmings of described ellipse.
Rotor the most according to claim 1, it is characterized in that, described magnet steel (2) is eccentric solid magnet steel, the cross section of described magnet steel (2) includes two semicircles in both sides and is connected to the rectangle between two semicircles, and the connection edge lengths of described rectangle is identical with described half diameter of a circle.
Rotor the most according to claim 1, it is characterized in that, described magnet steel (2) is the solid magnet steel of trimming, the both sides trimming of described magnet steel (2), and the length of both sides trimming is identical, both sides trimming is along the centrosymmetry of described magnet steel (2).
Rotor the most according to claim 1, it is characterised in that the inner hole section of described sheath (4) matches with the cross section of described magnet steel (2).
Rotor the most according to any one of claim 1 to 5, it is characterized in that, described first rotating shaft extremity piece (1) includes the first axial boss, described second rotating shaft extremity piece (3) includes the second axial boss (5), first end of described sheath (4) is set in described first axial boss, and the second end of described sheath (4) is set on described second axial boss (5).
Rotor the most according to any one of claim 1 to 5, it is characterized in that, described first rotating shaft extremity piece (1) is one-body molded with described sheath (4), described second rotating shaft extremity piece (3) includes the second axial boss (5), and described sheath (4) is set on described second axial boss (5).
Rotor the most according to claim 7, it is characterised in that described first rotating shaft extremity piece (1) is that yield strength is more than 1050Mpa and the tensile strength metal alloy more than 1280Mpa.
Rotor the most according to any one of claim 1 to 5, it is characterised in that described second rotating shaft extremity piece (3) is that non-magnet material is made.
Rotor the most according to any one of claim 1 to 5, it is characterised in that described magnet steel (2) magnetizes after using permanent magnet material and makes.
11. rotors according to any one of claim 1 to 5, it is characterised in that the magnetizing direction of described magnet steel (2) and differently-oriented directivity are all parallel with trimming or parallel with eccentric direction.
12. rotors according to claim 7, it is characterised in that described sheath (4) is interference fit with described magnet steel (2) and described second rotating shaft extremity piece (3).
13. rotors according to claim 8, it is characterised in that
Described metal alloy is titanium alloy or nickel-base alloy.
14. 1 kinds of motors, including rotor, it is characterised in that described rotor is the rotor according to any one of claim 1 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620067147.7U CN205647075U (en) | 2016-01-22 | 2016-01-22 | Electric motor rotor and permanent -magnet machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620067147.7U CN205647075U (en) | 2016-01-22 | 2016-01-22 | Electric motor rotor and permanent -magnet machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647075U true CN205647075U (en) | 2016-10-12 |
Family
ID=57078775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620067147.7U Active CN205647075U (en) | 2016-01-22 | 2016-01-22 | Electric motor rotor and permanent -magnet machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205647075U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553145A (en) * | 2016-01-22 | 2016-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnetic motor |
| CN110535293A (en) * | 2018-05-24 | 2019-12-03 | 江苏伯海电驱动科技有限公司 | A kind of permanent magnet synchronous motor with buffer-type revolving speed intelligent speed-control structure |
-
2016
- 2016-01-22 CN CN201620067147.7U patent/CN205647075U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105553145A (en) * | 2016-01-22 | 2016-05-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor rotor and permanent magnetic motor |
| CN110535293A (en) * | 2018-05-24 | 2019-12-03 | 江苏伯海电驱动科技有限公司 | A kind of permanent magnet synchronous motor with buffer-type revolving speed intelligent speed-control structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |