CN111293825B - Permanent magnet rotor of generator - Google Patents
Permanent magnet rotor of generator Download PDFInfo
- Publication number
- CN111293825B CN111293825B CN202010127603.3A CN202010127603A CN111293825B CN 111293825 B CN111293825 B CN 111293825B CN 202010127603 A CN202010127603 A CN 202010127603A CN 111293825 B CN111293825 B CN 111293825B
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- China
- Prior art keywords
- taper
- threaded hole
- shaft
- permanent magnet
- flywheel
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/02—Additional mass for increasing inertia, e.g. flywheels
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
- H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to the technical field of power generation equipment, in particular to a permanent magnet rotor of a generator; the flywheel comprises a flywheel, a taper shaft and a rotor body; the wide end of the taper shaft is coaxially fixed on the flywheel, the shaft part of the rotor body is provided with a taper sleeve with the same taper of the taper shaft, the taper shaft is provided with a first threaded hole, a second threaded hole is formed in the taper sleeve, and the axes of the first threaded hole, the second threaded hole, the taper sleeve and the taper shaft are overlapped; the taper sleeve and the taper shaft are sequentially connected with the second threaded hole and the first threaded hole through bolts to be fastened and connected; the flywheel and the rotor body are connected through the designed taper shaft, the rotor body is designed to be a taper sleeve which is coaxial with the taper shaft and has the same taper, and the rotor body is locked through the bolt, so that the traditional permanent magnet rotor structure of the generator is compared, and the flywheel and the rotor body can keep better concentricity under the high-speed rotation of the rotor body, so that the generator can run more stably.
Description
Technical Field
The invention relates to the technical field of power generation equipment, in particular to a permanent magnet rotor of a generator.
Background
The generator set has wide application in industrial production, national defense, science and technology and daily life, and with the technological progress in recent years, light-weight portable small generator sets also start to enter the daily production and application of industrial enterprises, are particularly applied to refrigerated vehicles, and through the process of converting mechanical energy into electric energy, a generator permanent magnet rotor is an important part of a small generator, and how a flywheel and a rotor body keep concentricity under high-speed rotation in the permanent magnet rotor is a technical problem which needs to be solved urgently.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a permanent magnet rotor for a generator is provided to maintain concentricity of a flywheel and a rotor body at high speed rotation.
In order to solve the technical problems, the invention adopts the technical scheme that:
a permanent magnet rotor of a generator comprises a flywheel, a taper shaft and a rotor body;
the flywheel is provided with a limiting groove, and the wide end of the taper shaft is in limiting fit with the limiting groove; the wide end of the taper shaft is coaxially fixed on the flywheel through a bolt, the shaft part of the rotor body is provided with a taper sleeve with the same taper of the taper shaft, the taper shaft is provided with a first threaded hole, a second threaded hole is formed in the taper sleeve, and the axes of the first threaded hole, the second threaded hole, the taper sleeve and the taper shaft are overlapped; the taper sleeve and the taper shaft are sequentially connected with the second threaded hole and the first threaded hole through bolts to be fastened and connected.
The invention has the beneficial effects that: compared with the traditional permanent magnet rotor structure of the generator, the flywheel and the rotor body can keep better concentricity under the high-speed rotation of the rotor body, so that the generator can run more stably.
Drawings
FIG. 1 is a cross-sectional view of a permanent magnet rotor for a generator according to an embodiment of the present invention;
FIG. 2 is a cross-sectional structural view of a tapered sleeve of a permanent magnet rotor for a generator in accordance with an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an axial configuration of a permanent magnet rotor for a generator in accordance with an embodiment of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
FIG. 5 is a cross-sectional view of a rotor body structure of a permanent magnet rotor for a generator in accordance with an embodiment of the present invention;
FIG. 6 is a sectional view of a fan coupling shaft of a permanent magnet rotor for a generator according to an embodiment of the present invention;
description of reference numerals:
1. a flywheel; 2. a taper shaft; 21. a first threaded hole; 3. a rotor body; 31. a taper sleeve; 311. a fourth threaded hole; 32. a second threaded hole; 33. a fixed mount; 331. a dovetail groove; 34. a permanent magnet pole; 35. supporting a spoke; 351. a through hole; 36. countersunk head screws; 4. a fan connecting shaft; 5. a fan blade; 6. a flange; 61. and a third threaded hole.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the flywheel and the rotor body are connected by designing the taper shaft, the rotor body is designed with the taper sleeve which is coaxial with the taper shaft and has the same taper, and is locked by the bolt, so that the flywheel and the rotor body can keep better concentricity,
referring to fig. 1 to 6, the present invention relates to a permanent magnet rotor for a generator, which includes a flywheel 1, a taper shaft 2 and a rotor body 3;
the flywheel 1 is provided with a limiting groove, and the wide end of the taper shaft 2 is in limiting fit with the limiting groove; the wide end of the taper shaft 2 is coaxially fixed on the flywheel 1 through a bolt, a taper sleeve 31 with the same taper of the taper shaft 2 is arranged on the shaft part of the rotor body 3, the taper shaft 2 is provided with a first threaded hole 21, a second threaded hole 32 is arranged in the taper sleeve 31, and the axes of the first threaded hole 21, the second threaded hole 32, the taper sleeve 31 and the taper shaft 2 are overlapped; the taper sleeve 31 and the taper shaft 2 are fastened and connected by being sequentially connected to the second threaded hole 32 and the first threaded hole 21 through bolts.
Among the above-mentioned generator permanent magnet rotor structure, connect flywheel 1 and rotor block 3 through design tapering axle 2, rotor block 3 designs with the coaxial and the same tapering cover 31 of tapering axle 2 to through bolt locking, compare traditional generator permanent magnet rotor structure, under rotor block 3 high-speed rotation, flywheel 1 and rotor block 3 can keep better concentricity, make the generator operation more steady.
Further, in the above permanent magnet rotor structure of the generator, the rotor body 3 includes a fixing frame 33, a permanent magnet pole 34 and supporting spokes 35; the fixed frame 33 is connected to the taper sleeve 31 through a support spoke 35, and the permanent magnet pole 34 is fixed on the fixed frame 33.
As can be seen from the above description, the permanent magnet pole 34 is fixed by the fixing frame 33, and the taper sleeve 31 and the fixing frame 33 are connected by the supporting spokes 35, so that a large amount of steel can be saved, and the weight of the whole generator can be reduced.
Further, in the above structure of the permanent magnet rotor for a generator, the fixing frame 33 is a circular cylinder, and the permanent magnet magnetic pole 34 is fixed to the outer arc surface of the fixing frame 33 by a countersunk head screw 36.
Further, in the above structure of the permanent magnet rotor of the generator, the outer arc surface of the fixing frame 33 is provided with a dovetail groove 331, the dovetail groove 331 is filled with a glue layer, and the permanent magnet magnetic pole 34 is attached to the glue layer.
As can be seen from the above description, the dovetail groove 331 is formed in the outer arc surface of the fixing frame 33, the adhesive layer is filled in the dovetail groove 331, the permanent magnet magnetic pole 34 is bonded by the adhesive layer, and the fixing of the countersunk head screw 36 is matched, so that the degree of combination between the permanent magnet magnetic pole 34 and the rotor body 3 is enhanced, and the service life of the product is prolonged.
Further, in the above generator permanent magnet rotor structure, one end of the taper sleeve 31 away from the flywheel 1 is coaxially connected with a fan connecting shaft 4, the fan connecting shaft 4 is connected with fan blades 5, and the supporting spokes 35 are provided with through holes 351.
As can be seen from the above description, the fan is coaxially connected to the taper sleeve 31, the rotor rotates to drive the fan blades 5 to rotate, so that the airflow flows to the gap between the fixing frame 33 of the rotor body 3 and the taper sleeve 31, and the through holes 351 are formed in the supporting spokes 35, so that the airflow can pass through the through holes 351 to penetrate through the rotor body 3 and reach the flywheel 1, and both the flywheel 1 and the rotor body 3 can be cooled better.
Further, in the above generator permanent magnet rotor structure, the fan connecting shaft 4 is a hollow shaft.
As can be seen from the above description, the fan connecting shaft 4 is designed as a hollow shaft, which can further reduce the weight of the permanent magnet rotor and save steel.
Further, in the above structure of the permanent magnet rotor for a generator, a flange 6 is disposed at one end of the fan connecting shaft 4, a third threaded hole 61 is disposed on the flange 6, a fourth threaded hole 311 matched with the third threaded hole 61 is disposed at one end of the taper sleeve 31 away from the flywheel 1, and the fan connecting shaft 4 is sequentially connected with the third threaded hole 61 and the fourth threaded hole 311 through screws in a second fixed connection manner.
Example 1
A generator permanent magnet rotor comprises a flywheel 1, a taper shaft 2 and a rotor body 3; the flywheel 1 is provided with a limiting groove, and the wide end of the taper shaft 2 is in limiting fit with the limiting groove; the wide end of the taper shaft 2 is coaxially fixed on the flywheel 1 through a bolt, a taper sleeve 31 with the same taper of the taper shaft 2 is arranged on the shaft part of the rotor body 3, the taper shaft 2 is provided with a first threaded hole 21, a second threaded hole 32 is arranged in the taper sleeve 31, and the axes of the first threaded hole 21, the second threaded hole 32, the taper sleeve 31 and the taper shaft 2 are overlapped; the taper sleeve 31 and the taper shaft 2 are fastened and connected by being sequentially connected to the second threaded hole 32 and the first threaded hole 21 through bolts. The rotor body 3 comprises a fixed frame 33, permanent magnet poles 34 and supporting spokes 35; the fixed frame 33 is connected to the taper sleeve 31 through a support spoke 35, and the permanent magnet pole 34 is fixed on the fixed frame 33. The fixing frame 33 is in the shape of a circular cylinder, and the permanent magnet magnetic pole 34 is fixed on the outer arc surface of the fixing frame 33 through a countersunk head screw 36. The outer arc surface of the fixing frame 33 is provided with a dovetail groove 331, an adhesive layer is filled in the dovetail groove 331, and the permanent magnet magnetic pole 34 is attached to the adhesive layer. One end of the taper sleeve 31, which is far away from the flywheel 1, is coaxially connected with a fan connecting shaft 4, the fan connecting shaft 4 is connected with fan blades 5, and the supporting spokes 35 are provided with through holes 351. The fan connecting shaft 4 is a hollow shaft. One end of the fan connecting shaft 4 is provided with a flange 6, the flange 6 is provided with a third threaded hole 61, one end of the taper sleeve 31 departing from the flywheel 1 is provided with a fourth threaded hole 311 matched with the third threaded hole 61, and the fan connecting shaft 4 is sequentially connected with the third threaded hole 61 and the fourth threaded hole 311 in a fixed connection mode through screws. The taper shaft 2 is fixed on the flywheel 1 through a bolt.
In summary, in the permanent magnet rotor structure of the generator provided by the invention, the flywheel and the rotor body are connected by designing the taper shaft, the rotor body is designed with the taper sleeve which is coaxial with the taper shaft and has the same taper, and is locked by the bolt, compared with the conventional permanent magnet rotor structure of the generator, the flywheel and the rotor body can keep better concentricity under the high-speed rotation of the rotor body, so that the generator can run more stably. Through the coaxial coupling fan on the tapering cover, rotate through the rotor and drive fan blade and rotate, make the air current flow direction rotor block's mount and the clearance between the tapering cover, through set up the through-hole on supporting the spoke, make the air current can pass the through-hole and run through the rotor block, reach the flywheel, make flywheel and rotor block can both obtain better cooling. The permanent magnet magnetic pole is fixed by the fixing frame, and the taper sleeve is connected with the fixing frame through the supporting spokes, so that a large amount of steel can be saved, and the weight of the whole generator is reduced.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (5)
1. A permanent magnet rotor of a generator is characterized by comprising a flywheel, a taper shaft and a rotor body;
the flywheel is provided with a limiting groove, and the wide end of the taper shaft is in limiting fit with the limiting groove; the wide end of the taper shaft is coaxially fixed on the flywheel through a bolt, the shaft part of the rotor body is provided with a taper sleeve with the same taper of the taper shaft, the taper shaft is provided with a first threaded hole, a second threaded hole is formed in the taper sleeve, and the axes of the first threaded hole, the second threaded hole, the taper sleeve and the taper shaft are overlapped; the taper sleeve and the taper shaft are sequentially connected with the second threaded hole and the first threaded hole through bolts to be fastened and connected;
the rotor body comprises a fixed frame, permanent magnet magnetic poles and supporting spokes; the fixed frame is connected to the taper sleeve through the supporting spokes, and the magnetic pole of the permanent magnet is fixed on the fixed frame;
one end of the taper sleeve, which is far away from the flywheel, is coaxially connected with a fan connecting shaft, the fan connecting shaft is connected with fan blades, and the supporting spokes are provided with through holes.
2. The generator permanent magnet rotor according to claim 1, wherein the fixing frame is shaped as a circular cylinder, and the permanent magnet poles are fixed to the extrados surface of the fixing frame by countersunk screws.
3. The generator permanent magnet rotor according to claim 2, wherein the outer arc surface of the fixing frame is provided with a dovetail groove, the dovetail groove is filled with an adhesive layer, and the permanent magnet magnetic poles are attached to the adhesive layer.
4. The generator permanent magnet rotor of claim 1 wherein the fan connection shaft is a hollow shaft.
5. The generator permanent magnet rotor as claimed in claim 1, wherein a flange is provided at one end of the fan connecting shaft, a third threaded hole is provided on the flange, a fourth threaded hole matched with the third threaded hole is provided at one end of the taper sleeve facing away from the flywheel, and the fan connecting shaft is sequentially connected with the third threaded hole and the fourth threaded hole through screws for fixed connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010127603.3A CN111293825B (en) | 2020-02-28 | 2020-02-28 | Permanent magnet rotor of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010127603.3A CN111293825B (en) | 2020-02-28 | 2020-02-28 | Permanent magnet rotor of generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111293825A CN111293825A (en) | 2020-06-16 |
| CN111293825B true CN111293825B (en) | 2021-06-18 |
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ID=71028320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010127603.3A Active CN111293825B (en) | 2020-02-28 | 2020-02-28 | Permanent magnet rotor of generator |
Country Status (1)
| Country | Link |
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| CN (1) | CN111293825B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62141940A (en) * | 1985-12-16 | 1987-06-25 | Kawasaki Heavy Ind Ltd | Mounting structure for generator |
| CN101645622B (en) * | 2009-06-23 | 2011-08-31 | 无锡市华东钢业机械有限公司 | Split type rare earth permanent magnet generator rotor |
| CN206452249U (en) * | 2017-02-24 | 2017-08-29 | 营口福泰科技有限责任公司 | Mobile charging stake or generating set engine and generator bindiny mechanism |
| CN208347924U (en) * | 2018-06-21 | 2019-01-08 | 福安开利电机制造有限公司 | A kind of automobile-used diesel generating set of refrigeration |
-
2020
- 2020-02-28 CN CN202010127603.3A patent/CN111293825B/en active Active
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| Publication number | Publication date |
|---|---|
| CN111293825A (en) | 2020-06-16 |
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