CN107222044A - Permanent-magnet DC electric motor rotor - Google Patents
Permanent-magnet DC electric motor rotor Download PDFInfo
- Publication number
- CN107222044A CN107222044A CN201710658573.7A CN201710658573A CN107222044A CN 107222044 A CN107222044 A CN 107222044A CN 201710658573 A CN201710658573 A CN 201710658573A CN 107222044 A CN107222044 A CN 107222044A
- Authority
- CN
- China
- Prior art keywords
- magnet
- ring
- permanent
- electric motor
- limit back
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- H02K1/2706—Inner rotors
-
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
- H02K7/04—Balancing means
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
Permanent-magnet DC electric motor rotor, is related to a kind of permanent-magnet DC electric motor rotor, more particularly, to a kind of permanent-magnetic DC brushless motor rotor.It is made up of rotating shaft, left limit back-up ring, discoid silicon steel sheet, magnet steel and right limit back-up ring, secured core in rotating shaft, permanent magnet is combined into by the magnet steel of same polarity same specification, and magnet steel is Nian Jie with iron core by binding agent；Permanent magnet is provided at both ends with axial left limit back-up ring and right limit back-up ring, and left limit back-up ring and right limit back-up ring are fixedly connected with rotating shaft.The present invention solves existing permanent magnet DC motor and timely and effectively heat can not shed so that temperature of rotor is too high, and rotor magnetic steel because of overheat the problem of cause irreversible demagnetization.
Description
Technical field
The present invention relates to a kind of permanent-magnet DC electric motor rotor, more particularly, to a kind of permanent-magnetic DC brushless motor rotor.
Background technology
At present, the permanent magnet of permanent-magnet DC electric motor rotor is typically fixed on rotor core by binding agent.In motor work
Rotor will produce larger heat when making, and is especially especially apparent in the motor that rotating speed is higher, power is larger.If can not and
When effectively heat is shed, the working limit that temperature of rotor exceedes permanent magnet will cause the irreversible demagnetization of permanent magnet, permanent magnetism
Body will reduce higher motor speed, efficiency reduction, power, moment of torsion once forming irreversible demagnetization, will produce bigger heat,
Hence into vicious circle, finally make motor failure.While high temperature will also cause bonding agent ageing failure permanent magnet is dropped and lead
Cause motor failure.How the effective heat for producing rotor, which sheds, is protected working condition of the permanent magnet in safety to be Permanent Magnet and Electric
One important topic of machine.And if permanent magnet machine rotor axial pole is made up of the magnet steel of polylith same polarity, when magnet steel is thick
When degree is thicker, mutual repulsion also will be larger, can not just ensure its axial compactness by bonding agent, during installation between magnet steel easily
Larger gap is produced, motor performance is had a strong impact on.
The content of the invention
It is an object of the invention to provide a kind of permanent-magnet DC electric motor rotor, the present invention solves existing permanent magnet DC motor
Timely and effectively heat can not be shed so that temperature of rotor is too high, and rotor magnetic steel causes irreversible demagnetization because of overheat
Problem.
The permanent-magnet DC electric motor rotor of the present invention, permanent-magnet DC electric motor rotor, by rotating shaft 1, left limit back-up ring 2, discoid
Silicon steel sheet 4, magnet steel 5 and right limit back-up ring 7 are constituted, secured core in rotating shaft 1, and permanent magnet is spelled by the magnet steel 5 of same polarity same specification
Into magnet steel 5 is Nian Jie with iron core by binding agent 6；Permanent magnet is provided at both ends with axial left limit back-up ring 2 and right limit back-up ring 7,
Left limit back-up ring 2 and right limit back-up ring 7 are fixedly connected with rotating shaft 1.
Further, permanent-magnet DC electric motor rotor of the invention, also with following features：Iron core is by discoid silicon steel sheet 4
Build up, be evenly equipped with circular hole on each discoid silicon steel sheet 4, discoid silicon steel sheet 4 rotates successively to be folded, and circular hole is formed on iron core
Oblique through hole 4-1.
Also there is hole 9 on left limit back-up ring 2 and right limit back-up ring 7 respectively, the size of hole 9, position are consistent with through hole 4-1.
There is antioxidant coating 3 permanent magnet pole outer surface.
Limited location ring washer flabellum 8 on left limit back-up ring 2 and right limit back-up ring 7 excircle.
The spacing back-up ring is formed by non-magnetic metal material processing.
By carrying out calibration balance to rotor using duplicate removal method to left limit back-up ring 2 and right limit back-up ring 7.
The permanent-magnet DC electric motor rotor advantage of the present invention is：Because permanent magnet pole is axially by multi-disc same polarity same specification
Magnet steel composition, with using monolithic magnet steel, compared to can reduce temperature of rotor, effectively cause because of overheat can not for solution rotor magnetic steel
Inverse demagnetization problem, and the processing technology difficulty of magnet steel can be reduced, improve the machining accuracy of magnet steel.It is most left and most right two located at magnetic pole
The spacing back-up ring at end, can prevent from producing larger gap between magnet steel, make magnet steel axial restraint close accurately and reliably.Spacing back-up ring
It is to be formed by the relatively large metal material processing of non-magnetic density, flabellum is provided with above spacing back-up ring, motor can when working
Strengthen inner air flowing, improve rotor heat-sinking capability.Rotor core is provided with equal cloth hole, and is built up by certain anglec of rotation degree,
No matter motor steering, motor internal speed air flow can be all improved, and adds rotor core area of dissipation simultaneously, is carried
High rotor heat-sinking capability.Permanent magnet pole outer surface is provided with antioxidant defense coating, has effectively delayed the oxidation of magnet steel, extends
Electrical machinery life.
Brief description of the drawings
Fig. 1 is dimensional structure diagram of the present invention；
Fig. 2 is sectional view of the present invention.
Symbol description in figure：Rotating shaft 1, left limit back-up ring 2, antioxidant coating 3, discoid silicon steel sheet 4, through hole 4-1, magnet steel
5, binding agent 6, right limit back-up ring 7, spacing ring washer flabellum 8, hole 9.
Embodiment
Below in conjunction with the accompanying drawings and the present invention is described in detail with optimal embodiment.
Refering to Fig. 1-Fig. 2, permanent-magnet DC electric motor rotor, permanent-magnet DC electric motor rotor, by rotating shaft 1, left limit back-up ring 2, circle
Plate-like silicon steel sheet 4, magnet steel 5 and right limit back-up ring 7 are constituted, secured core in rotating shaft 1, permanent magnet by same polarity same specification magnet steel
5 are combined into, and magnet steel 5 is Nian Jie with iron core by binding agent 6；Permanent magnet is provided at both ends with axial left limit back-up ring 2 and right limit gear
Circle 7, left limit back-up ring 2 and right limit back-up ring 7 are fixedly connected with rotating shaft 1.
Further, permanent-magnet DC electric motor rotor of the invention, also with following features：Iron core is by discoid silicon steel sheet 4
Build up, be evenly equipped with circular hole on each discoid silicon steel sheet 4, discoid silicon steel sheet 4 rotates successively to be folded, and circular hole is formed on iron core
Oblique through hole 4-1.
Also there is hole 9 on left limit back-up ring 2 and right limit back-up ring 7 respectively, the size of hole 9, position are consistent with through hole 4-1.
There is antioxidant coating 3 permanent magnet pole outer surface.
Limited location ring washer flabellum 8 on left limit back-up ring 2 and right limit back-up ring 7 excircle.
The spacing back-up ring is formed by non-magnetic metal material processing.
By carrying out calibration balance to rotor using duplicate removal method to left limit back-up ring 2 and right limit back-up ring 7.
Multiple equal cloth holes are provided with described discoid silicon steel sheet, armature spindle is consolidated discoid silicon steel sheet by certain swing
It is scheduled on together.Due to adding the area of dissipation of rotor, the temperature of rotor is reduced, and reduces the quality of rotor, electricity is improved
Clever sensitivity.This discoid silicon steel sheet is fixed together by certain anglec of rotation, can improve motor internal when motor works
Speed air flow, effectively improves the heat-sinking capability of rotor.
The spacing back-up ring is provided with flabellum.Motor internal more uniform temperature can be made, prevent the situation of hot-spot from occurring, and
The temperature of winding can be reduced.Spacing back-up ring is formed by the relatively large metal material processing of non-magnetic density, can be by going
Weight method directly carries out calibration balance to rotor, makes rotor operating more steady, improves the combination property of motor.
Described permanent magnet pole outer surface is provided with antioxidant defense coating, can improve the oxidation resistance of magnet steel, extends
Motor service life.
Above example is one kind of the present invention more preferably embodiment, and those skilled in the art are in the technical program
In the range of the usual variations and alternatives that carry out should be comprising within the scope of the present invention.
Claims (7)
1. permanent-magnet DC electric motor rotor, by rotating shaft (1), left limit back-up ring (2), discoid silicon steel sheet (4), magnet steel (5) and right limit
Position back-up ring (7) is constituted, it is characterised in that secured core in rotating shaft (1), permanent magnet is combined into by the magnet steel (5) of same polarity same specification,
Magnet steel (5) is Nian Jie with iron core by binding agent (6)；Permanent magnet is provided at both ends with axial left limit back-up ring (2) and right limit gear
Enclose (7), left limit back-up ring (2) and right limit back-up ring (7) are fixedly connected with rotating shaft (1).
2. permanent-magnet DC electric motor rotor as claimed in claim 1, it is characterised in that iron core is built up by discoid silicon steel sheet (4), often
Circular hole is evenly equipped with individual discoid silicon steel sheet (4), discoid silicon steel sheet (4) rotates successively to be folded, and circular hole is formed tiltedly on iron core
To through hole (4-1).
3. permanent-magnet DC electric motor rotor as claimed in claim 2, it is characterised in that left limit back-up ring (2) and right limit back-up ring (7)
On also have hole (9) respectively, hole (9) size, position and through hole (4-1) are consistent.
4. permanent-magnet DC electric motor rotor as claimed in claim 1, it is characterised in that there is antioxidant coating permanent magnet pole outer surface
(3)。
5. permanent-magnet DC electric motor rotor as claimed in claim 1, it is characterised in that the left limit back-up ring (2) and right limit gear
Enclose limited location ring washer flabellum (8) on (7) excircle.
6. permanent-magnet DC electric motor rotor as claimed in claim 1, it is characterised in that the spacing back-up ring is by non-magnetic metal material
Material is processed.
7. permanent-magnet DC electric motor rotor as claimed in claim 1, it is characterised in that by left limit back-up ring (2) and right limit
Back-up ring (7) carries out calibration balance using duplicate removal method to rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658573.7A CN107222044A (en) | 2017-08-04 | 2017-08-04 | Permanent-magnet DC electric motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658573.7A CN107222044A (en) | 2017-08-04 | 2017-08-04 | Permanent-magnet DC electric motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107222044A true CN107222044A (en) | 2017-09-29 |
Family
ID=59954741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710658573.7A Withdrawn CN107222044A (en) | 2017-08-04 | 2017-08-04 | Permanent-magnet DC electric motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107222044A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115173599A (en) * | 2022-07-25 | 2022-10-11 | 山东超同步智能装备有限公司 | Interpolation type permanent magnet motor rotor, production method thereof and motor using rotor |
-
2017
- 2017-08-04 CN CN201710658573.7A patent/CN107222044A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115173599A (en) * | 2022-07-25 | 2022-10-11 | 山东超同步智能装备有限公司 | Interpolation type permanent magnet motor rotor, production method thereof and motor using rotor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20170929 |
|
| WW01 | Invention patent application withdrawn after publication |