CN205283280U - Permanent -magnet machine pivot structure - Google Patents
Permanent -magnet machine pivot structure Download PDFInfo
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- CN205283280U CN205283280U CN201620027619.6U CN201620027619U CN205283280U CN 205283280 U CN205283280 U CN 205283280U CN 201620027619 U CN201620027619 U CN 201620027619U CN 205283280 U CN205283280 U CN 205283280U
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- rotating shaft
- extremity piece
- shaft extremity
- accommodating cavity
- magnetic core
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Abstract
The utility model discloses a permanent -magnet machine pivot structure, include: first pivot extremity piece, magnetic core and second pivot extremity piece, wherein, the one end of first pivot extremity piece is provided with the holding chamber, the holding chamber is used for the holding the magnetic core to connection second pivot extremity piece. The utility model discloses a scheme can overcome that the structure is complicated among the prior art, intensity is low and maintain defects such as inconvenient, and implementation structure is simple, intensity is high and maintain convenient beneficial effect.
Description
Technical field
The utility model relates to technical field of motors, specifically, it relates to a kind of permanent-magnet machine pivot structure, particularly relates to a kind of two-part high-speed permanent magnet motor pivot structure.
Background technology
Usually, rotating speed can regard high speed rotor as at more than 1000rpm or the rotor that exceedes rotor first critical speed. See Fig. 1, it is that in the high speed permanent magnet motor rotor axle of " 98802132.3 ", rotating shaft is spliced by three sections at number of patent application, adopts whole cylindrical magnet steel, utilize the shrink-fit between alloy sleeve 14 and three sections of main shafts to transmit moment of torsion. Wherein, the first rotating shaft extremity piece 11, the 2nd rotating shaft extremity piece 12 are non-magnet material, are cylindricality magnet steel 13 between the first rotating shaft extremity piece 11 and the 2nd rotating shaft extremity piece 12.
In addition, see Fig. 2, it is in the high speed permanent magnet motor rotor structure of " US7042118B2 " in the patent No., high speed permanent magnet motor rotor adopts the annular magnetic steel 23 of segmentation, rotor also adopts sectional type (three sections) structure, first the extremity piece (such as: the first extremity piece 21 and the 2nd extremity piece 22) at the annular magnetic steel 23 of segmentation and two ends is bound up by the guide rod 25 of a TBE (threaded both ends), then has been assembled by sheath 24 disposable thermal.
Above syllogic high speed rotor structure, structure is more complicated, and assembling and maintenance are all inconvenient, also have impact on the structural strength of rotating shaft to a certain extent.
In prior art, there is complex structure, intensity is low and safeguards the defects such as inconvenient.
Practical novel content
The purpose of this utility model is, for above-mentioned defect, it is proposed to a kind of permanent-magnet machine pivot structure, to promote assembling convenience, to reduce assembly difficulty.
The utility model provides a kind of permanent-magnet machine pivot structure, comprising: the first rotating shaft extremity piece, magnetic core and the 2nd rotating shaft extremity piece; Wherein, one end of described first rotating shaft extremity piece is provided with accommodating cavity; Described accommodating cavity is used for accommodating described magnetic core, and connects the 2nd rotating shaft extremity piece.
Preferably, the one end portion hollow of described first rotating shaft extremity piece, forms described accommodating cavity.
Preferably, the end of described 2nd rotating shaft extremity piece and the connection of described accommodating cavity has boss, and described boss and described accommodating cavity are adaptive; Forming station terrace between the end periphery of described boss and described 2nd rotating shaft extremity piece; Wherein, described boss is placed in described accommodating cavity, and the end face that described 2nd rotating shaft extremity piece is provided with described accommodating cavity one end by described step surface and described first rotating shaft extremity piece coordinates.
Preferably, the first end face of described magnetic core and the bottom surface laminating of described accommodating cavity, the biend of described magnetic core and the raised head face laminating of the 2nd rotating shaft extremity piece.
Preferably, it is Desing of Interference Joint between described first rotating shaft extremity piece and described magnetic core, described 2nd rotating shaft extremity piece.
Preferably, described magnetic core is solid magnet steel.
Preferably, the material of described first rotating shaft extremity piece is nickel-base alloy or titanium alloy; And/or, the material of described 2nd rotating shaft extremity piece is non-magnet material, for every magnetic; And/or, the material of described magnetic core is neodymium iron boron.
Scheme of the present utility model, for now existing syllogic high speed rotor structure, alloy sleeve is as a whole with the design of wherein one end axle, the two-part rotation shaft of high-speed motor obtained, structure is simpler, compact; Also improve the structural strength of such rotating shaft to a certain extent simultaneously.
Thus, scheme of the present utility model solves the accommodating cavity utilizing and one end of a rotating shaft extremity piece being set to the accommodating magnetic core of energy, promote assembling convenience, reduce the problem of assembly difficulty, thus, overcome complex structure in prior art, intensity low and safeguard inconvenient defect, it is achieved structure is simple, intensity height and useful effect easy to maintenance.
Other features and advantages of the utility model will be set forth in the following description, and, partly become apparent from specification sheets, or understand by implementing the utility model.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Accompanying drawing be used to provide to of the present utility model it is further understood that and form the part of specification sheets, be used from explanation the utility model with embodiment one of the present utility model, do not form restriction of the present utility model. In the accompanying drawings:
Fig. 1 is the rotor schematic cross-section of an existing high speed permanent magnet motor rotor axle;
Fig. 2 is the structural representation of another existing high speed permanent magnet motor rotor axle;
Fig. 3 is the rotor schematic cross-section of permanent-magnet machine pivot structure of the present utility model;
Fig. 4 is the assembling exploded perspective view of permanent-magnet machine pivot structure of the present utility model.
By reference to the accompanying drawings 1, in the utility model embodiment, Reference numeral is as follows:
11-first rotating shaft extremity piece; 12-the 2nd rotating shaft extremity piece; 13-cylindricality magnet steel; 14-alloy sleeve.
By reference to the accompanying drawings 2, in the utility model embodiment, Reference numeral is as follows:
21-first extremity piece; 22-the 2nd extremity piece; 23-annular magnetic steel; 24-sheath; 25-guide rod.
By reference to the accompanying drawings 3,4, in the utility model embodiment, Reference numeral is as follows:
31-first rotating shaft extremity piece; 32-the 2nd rotating shaft extremity piece; 33-magnet steel.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with the utility model specific embodiment and corresponding accompanying drawing, technical solutions of the utility model are clearly and completely described. Obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments. Based on the embodiment in the utility model, those of ordinary skill in the art are not making other embodiments all obtained under creative work prerequisite, all belong to the scope of the utility model protection.
According to embodiment of the present utility model, it provides a kind of permanent-magnet machine pivot structure. This pivot structure comprises:
First rotating shaft extremity piece 31, magnetic core and the 2nd rotating shaft extremity piece 32; Wherein, one end of the first rotating shaft extremity piece 31 is provided with accommodating cavity; Described accommodating cavity is used for accommodating described magnetic core, and connects the 2nd rotating shaft extremity piece 32. By arranging accommodating cavity in the end of the first rotating shaft extremity piece, accommodating magnetic core and connection the 2nd rotating shaft extremity piece, it is possible on the basis protecting permanent magnetism rotor and proof strength, simplify mounting structure for rotating shaft, reduce volume, save material.
Wherein, the one end portion hollow of described first rotating shaft extremity piece 31, forms accommodating cavity. The cavity of accommodating cavity, it is possible to have can accommodating described magnetic core and connect any desired configuration (such as: Polygons) of the end of described 2nd rotating shaft extremity piece 32. Preferably, accommodating cavity is cylindrical cavity, for placing magnetic core. Cylindrical setting can conveniently be installed, and setting accuracy height.
In one embodiment, the 2nd rotating shaft extremity piece 32 has boss with the end of accommodating cavity connection, and described boss and described accommodating cavity are adaptive; Forming station terrace between the end periphery of boss and the 2nd rotating shaft extremity piece 32. Described boss is placed in described accommodating cavity, and the end face that described step surface is provided with accommodating cavity one end with described first rotating shaft extremity piece 31 coordinates. 2nd rotating shaft extremity piece 32 is connect with described accommodating cavity by described boss, is coordinated by the end face of step surface with the one end of the first rotating shaft extremity piece, and is linked in described magnetic core. Coordinated with the end face of the one end of the first rotating shaft extremity piece with accommodating cavity connection, step surface by boss, convenient installation, and the reliability height of connection, good stability.
In one example in which, the first end face of described magnetic core and the bottom surface laminating of described accommodating cavity, the biend of described magnetic core and the raised head face laminating of the 2nd rotating shaft extremity piece 32. By magnetic core and accommodating cavity and the laminating of rotating shaft extremity piece are installed, it is possible to strengthen stability and security that rotating shaft runs.
Preferably, it is Desing of Interference Joint between described first rotating shaft extremity piece 31 and magnetic core, the 2nd rotating shaft extremity piece 32. Pass through Desing of Interference Joint, it is possible to improve the reliability and stability of connection, be conducive to improving stability and the security that motor runs.
In one example in which, the material of described first rotating shaft extremity piece 31 is high-strength material, it may be preferred that select nickel-base alloy or titanium alloy etc. With the use of the alloy material of high strength, when high speed rotating, due to the provide protection of the first rotating shaft extremity piece 31 so that permanent magnetism rotor can safe operation.
In one example in which, the material of described 2nd rotating shaft extremity piece 32 is non-magnet material, it is possible to play the effect every magnetic. By selecting non-magnet material, it is possible to improve the safety and reliability that motor runs.
Preferably, described magnetic core is permanent magnet material, it is preferable to magnet steel 33; More preferably, magnet steel 33 is solid magnet steel. Adopt solid magnet steel can strengthen magneticstrength, and good stability.
Preferably, the material of described magnet steel 33 comprises neodymium iron boron. By selecting the permanent magnet materials such as neodymium iron boron, it is ensured that the stability in magnet steel magnetic field after magnetizing, be conducive to improving reliability and the security that motor runs. Preferably, magnetize after magnet steel employing mode, that is, for avoiding rotating shaft heat dress demagnetization, adopt the technique magnetized again after installing magnet steel.
Preferably, see the example shown in Fig. 3, Fig. 4, this permanent-magnet machine pivot structure, is divided into two sections, comprises three parts, i.e. the first rotating shaft extremity piece 31, solid magnet steel and the 2nd rotating shaft extremity piece 32, such as: cylindrical cavity, wherein one end (such as: right-hand member) the part hollow of the first rotating shaft extremity piece 31, forms the cavity (but be not limited to cylindrical cavity) of a specified shape, for placing magnetic core (such as: solid magnet steel), and connect the 2nd rotating shaft extremity piece 32. 2nd rotating shaft extremity piece 32 is provided with boss with the end (such as: left end) of accommodating cavity connection, and the boss of the 2nd rotating shaft extremity piece 32 is consistent with the cavity shape of the first rotating shaft extremity piece 31. It is Desing of Interference Joint between first rotating shaft extremity piece 31 and solid magnet steel, the 2nd rotating shaft extremity piece 32. First rotating shaft extremity piece 31, namely must adopt high-strength material with the end axle of cavity, such as nickel-base alloy, titanium alloy etc., during high speed rotating, due to the provide protection of the first rotating shaft extremity piece 31 so that permanent magnetism rotor can safe operation.
Through a large amount of verification experimental verifications, adopting the two-part rotation shaft of high-speed motor of the technical scheme of the present embodiment, for now existing syllogic high speed rotor structure, structure is simpler, compact, also improves the structural strength of such rotating shaft to a certain extent simultaneously.
According to embodiment of the present utility model, additionally provide the assembly method of a kind of permanent-magnet machine pivot structure corresponding to permanent-magnet machine pivot structure. This assembly method comprises:
Based on above-described permanent-magnet machine pivot structure, installation step comprises:
1) described first rotating shaft extremity piece 31 is heated;
2) described magnetic core is placed in the described accommodating cavity of described first rotating shaft extremity piece 31;
3) one end by described 2nd rotating shaft extremity piece 32 loads described accommodating cavity;
4) axial compression.
By heating, make described accommodating cavity expanded by heating, it is convenient to magnetic core and the 2nd rotating shaft extremity piece are installed on accommodating cavity, it is achieved Desing of Interference Joint, it is to increase assembling reliability, and then improve stability and the security of machine operation.
Preferably, step 1) in, described first rotating shaft extremity piece 31 is heated to the tempering temperature lower than the high-strength material forming described first rotating shaft extremity piece 31, insulation preset duration; Preferably, when the material of the first rotating shaft extremity piece 31 is nickel-base alloy or during titanium alloy, the first rotating shaft extremity piece 31 is heated to 500 DEG C��600 DEG C, insulation for some time. Preferably, soaking time is 30-60min.
Preferably, step 4) after described magnetic core is magnetized. By after the technique that magnetizes and magnetized again after namely mode has assembled magnetic core, it is possible to avoid rotating shaft heat dress demagnetization, strengthen magnetic core magnetic field reliability and motor operation stability.
Preferably, to the step that described magnetic core magnetizes, specifically carry out after the temperature of described first rotating shaft extremity piece 31 is cooled to normal temperature. By magnetizing again after cooling, it is possible to improve the reliability that magnetizes and the stability in magnetic field after magnetizing.
Preferably, magnetic core is cylindrical base solid magnet steel, adopts NdFeB material, the mode that magnetizes after the employing of cylindrical base solid magnet steel (for avoiding rotating shaft heat dress demagnetization, adopt the technique magnetized again after installing magnet steel); First rotating shaft extremity piece 31 is heated to certain temperature (about 500 DEG C��600 DEG C), lower than the tempering temperature of alloy material, insulation for some time. Then cylindrical base solid magnet steel being put in the accommodating cavity of the first rotating shaft extremity piece 31, then one end of the 2nd rotating shaft extremity piece 32 is encased in accommodating cavity, last axial compression, whole assembling process requires fast as far as possible completing.
Now, the left side of cylindrical base solid magnet steel and the circular bottom surface laminating of the first rotating shaft extremity piece 31 accommodating cavity, the right side of solid magnet steel and the left end boss disc laminating of the 2nd rotating shaft extremity piece 32; And first rotating shaft extremity piece 31 right-hand member anchor ring and the 2nd rotating shaft extremity piece 32 left end step anchor ring laminating.
The process realized due to the assembly method of the present embodiment and function are substantially corresponding to the embodiment of the pivot structure shown in earlier figures 3, Fig. 4, principle and example, therefore not detailed part in the description of the present embodiment, see the related description in previous embodiment, can not repeat at this.
Through a large amount of verification experimental verifications, adopt the technical solution of the utility model, for the high-speed permanent magnetic rotor structure of syllogic, alloy sleeve is as a whole with the design of wherein one end axle, carry out Desing of Interference Joint by the mode of heating, assembling is more simple, convenient, and installation strength height, good stability.
To sum up, those skilled in the art are it is understood that under the prerequisite do not conflicted, above-mentioned each advantageous manner can freely combine, superposition.
The foregoing is only embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations. All within spirit of the present utility model and principle, any amendment of doing, equivalent replacement, improvement etc., all should be included within right of the present utility model.
Claims (7)
1. a permanent-magnet machine pivot structure, it is characterised in that, comprising: the first rotating shaft extremity piece, magnetic core and the 2nd rotating shaft extremity piece; Wherein,
One end of described first rotating shaft extremity piece is provided with accommodating cavity; Described accommodating cavity is used for accommodating described magnetic core, and connects the 2nd rotating shaft extremity piece.
2. structure according to claim 1, it is characterised in that, the one end portion hollow of described first rotating shaft extremity piece, forms described accommodating cavity.
3. structure according to claim 1 and 2, it is characterised in that, the end of described 2nd rotating shaft extremity piece and the connection of described accommodating cavity has boss, and described boss and described accommodating cavity are adaptive; Forming station terrace between the end periphery of described boss and described 2nd rotating shaft extremity piece; Wherein,
Described boss is placed in described accommodating cavity, and the end face that described 2nd rotating shaft extremity piece is provided with described accommodating cavity one end by described step surface and described first rotating shaft extremity piece coordinates.
4. structure according to claim 3, it is characterised in that, the first end face of described magnetic core and the bottom surface laminating of described accommodating cavity, the biend of described magnetic core and the raised head face laminating of the 2nd rotating shaft extremity piece.
5. structure according to claim 1 and 2, it is characterised in that, it is Desing of Interference Joint between described first rotating shaft extremity piece and described magnetic core, described 2nd rotating shaft extremity piece.
6. structure according to claim 1 and 2, it is characterised in that, described magnetic core is solid magnet steel.
7. structure according to claim 1 and 2, it is characterised in that, the material of described first rotating shaft extremity piece is nickel-base alloy or titanium alloy; And/or,
The material of described 2nd rotating shaft extremity piece is non-magnet material, for every magnetic; And/or,
The material of described magnetic core is neodymium iron boron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027619.6U CN205283280U (en) | 2016-01-11 | 2016-01-11 | Permanent -magnet machine pivot structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620027619.6U CN205283280U (en) | 2016-01-11 | 2016-01-11 | Permanent -magnet machine pivot structure |
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| Publication Number | Publication Date |
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| CN205283280U true CN205283280U (en) | 2016-06-01 |
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| CN201620027619.6U Active CN205283280U (en) | 2016-01-11 | 2016-01-11 | Permanent -magnet machine pivot structure |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471137A (en) * | 2016-01-11 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotating shaft structure of permanent magnet motor and assembling method of the rotating shaft structure |
| CN107834735A (en) * | 2017-12-04 | 2018-03-23 | 南京磁谷科技有限公司 | A kind of rotor structure of magnetic suspension motor |
| CN112332597A (en) * | 2020-10-26 | 2021-02-05 | 北京动力机械研究所 | Motor shaft structure and process of high-power-density power generation system |
-
2016
- 2016-01-11 CN CN201620027619.6U patent/CN205283280U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105471137A (en) * | 2016-01-11 | 2016-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | Rotating shaft structure of permanent magnet motor and assembling method of the rotating shaft structure |
| CN107834735A (en) * | 2017-12-04 | 2018-03-23 | 南京磁谷科技有限公司 | A kind of rotor structure of magnetic suspension motor |
| CN112332597A (en) * | 2020-10-26 | 2021-02-05 | 北京动力机械研究所 | Motor shaft structure and process of high-power-density power generation system |
| CN112332597B (en) * | 2020-10-26 | 2022-11-18 | 北京动力机械研究所 | Motor shaft structure and process of high-power-density power generation system |
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