CN110855041A - Vibration-damping surface-mounted permanent magnet motor rotor structure with sheath - Google Patents
Vibration-damping surface-mounted permanent magnet motor rotor structure with sheath Download PDFInfo
- Publication number
- CN110855041A CN110855041A CN201911289004.5A CN201911289004A CN110855041A CN 110855041 A CN110855041 A CN 110855041A CN 201911289004 A CN201911289004 A CN 201911289004A CN 110855041 A CN110855041 A CN 110855041A
- Authority
- CN
- China
- Prior art keywords
- sheath
- permanent magnet
- fixing frame
- vibration
- rotor structure
- 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.)
- Pending
Links
- 238000013016 damping Methods 0.000 title claims abstract description 13
- 238000002955 isolation Methods 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 claims 1
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
Images
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
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention provides a vibration-damping surface-mounted permanent magnet motor rotor structure with a sheath. The surface-mounted permanent magnet motor rotor structure with the sheath comprises a fixing frame, a rotor core, a magnetic isolation strip, a sheath and a permanent magnet, wherein the sheath is tightly attached to the surface of the rotor core, and the permanent magnet is fixed on the outer surface of the sheath; the fixing frame is fixed on two sides of the rotor core, and the sheath and the magnetic isolation strip are fixed on the fixing frame. By utilizing the rotor structure, the radial electromagnetic force of an air gap magnetic field acting on the stator during the operation of the motor can be reduced, and the vibration and the noise of the motor are further reduced; meanwhile, the permanent magnets can be conveniently and uniformly fixed on the sheath, the circumferential movement of the permanent magnets is avoided, and the running stability of the motor is improved.
Description
Technical Field
The invention belongs to the field of motors, and particularly relates to a surface-mounted permanent magnet motor rotor structure with a sheath for reducing vibration.
Background
The permanent magnet motor is widely applied to various industries due to simple structure, low loss, high efficiency and reliable operation. With the development of permanent magnet motors, people have higher and higher requirements, and vibration and noise are important indexes for measuring the performance level of the motors.
The vibration and noise of the permanent magnet motor mainly originate from mechanical noise, electromagnetic noise and aerodynamic noise, and it is generally considered that the electromagnetic noise is a main source of the vibration and noise of the permanent magnet motor. The main source of electromagnetic noise is that alternating electromagnetic force waves generated by the motor in the running process act on the stator tooth part to deform the stator, so that noise is generated, and particularly, when the frequency of the force waves is close to the natural frequency of the motor, a more serious resonance phenomenon is caused.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to reduce the alternating electromagnetic force acting on the stator tooth part during the operation of the permanent magnet motor, thereby achieving the effect of reducing vibration and noise.
Therefore, the invention provides a surface-mounted permanent magnet motor rotor structure with a sheath, which can reduce vibration, and the technical scheme is as follows:
the utility model provides a damping takes sheath surface-mounted permanent-magnet machine rotor structure, includes pivot, rotor, sheath, permanent magnet, separates magnetic stripe, first mount and second mount are fixed respectively at the rotor both ends.
Further, the first fixing frame and the second fixing frame are fixed on the rotor by adopting a screw fixing method.
Further, the first fixing frame and the second fixing frame are made of copper.
Furthermore, the sheath is tightly attached to the surface of the rotor and is integrated with the first fixing frame or the second fixing frame.
Furthermore, the sheath material is copper, and the thickness is 0.5 mm-2 mm.
Further, the outer wall of the sheath is provided with an insulating coating.
Further, the magnetic isolation strips are uniformly arranged in the circumferential direction of the first fixing frame and the second fixing frame and are fixed on the first fixing frame and the second fixing frame by adopting a screw fixing method.
Further, the permanent magnet is placed between the magnetic isolation strips and fixed on the sheath by using an adhesive.
The invention has the following beneficial effects:
the sheath structure of the invention can generate an alternating magnetic field opposite to the air gap magnetic field when the motor runs, thereby reducing the electromagnetic force wave acting on the stator tooth part and achieving the effect of reducing vibration and noise. The magnetic isolation strip structure is added on the basis of reducing vibration noise, so that the permanent magnet is convenient to fix and install, the permanent magnet is prevented from moving circumferentially, and the running stability of the motor is improved.
Drawings
Fig. 1 is a schematic perspective view of a rotor structure of a surface-mounted permanent magnet motor with a sheath according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of a rotor structure of a surface-mounted permanent magnet motor with a sheath according to an embodiment of the present invention.
FIG. 3 is a spectrum analysis of a radial electromagnetic force simulation with no sheath, a sheath thickness of 0.5mm, and a sheath thickness of 1mm according to an embodiment of the present invention.
FIG. 4 is a spatial frequency spectrum diagram of a radial electromagnetic force simulation with no sheath, a sheath thickness of 0.5mm, and a sheath thickness of 1mm according to an embodiment of the present invention.
In the figure: 1-1, a first fixing frame; 1-2, a second fixing frame; 2. a rotor core; 3. a sheath; 4. a permanent magnet; 5. and (4) magnetic isolation strips.
Detailed Description
The vibration-damping surface-mounted permanent magnet motor rotor structure with the sheath according to the present invention will be described in further detail with reference to the following embodiments and the accompanying drawings.
As shown in fig. 1 to 3, a vibration-damping surface-mounted permanent magnet motor rotor structure with a sheath comprises a first fixing frame 1-1, a second fixing frame 1-2 and a rotor 2, wherein the first fixing frame 1-1 and the second fixing frame 1-2 are respectively arranged at two ends of the rotor 2, and spiral grooves are uniformly formed in the side surfaces of the first fixing frame 1-1 and the second fixing frame 1-2 and two ends of the rotor 2, so that the fixing frames are convenient to mount and fix.
The inner diameter of the sheath 3 is equal to the outer diameter of the rotor 2, and the sheath is tightly attached to the outer side of the rotor 2 during installation; the sheath 3 is made of copper, and the thickness of the sheath is 0.5 mm-2 mm; the surface of the sheath 3 is provided with an insulating coating to prevent the electric leakage phenomenon in use.
Further, the first fixing frame 1-1 and the second fixing frame 1-2 are made of copper, and the first fixing frame 1-1 or the second fixing frame 1-2 and the sheath 3 are of an integrated structure, so that the stability of the sheath is guaranteed.
Spiral grooves are uniformly formed in the circumferential outer sides of the first fixing frame 1-1 and the second fixing frame 1-2 and at two ends of the magnetic isolation strip 5, and the magnetic isolation strip is conveniently fixed on the sheath.
The permanent magnet 4 is arranged between the magnetic isolation strips 5, and the inner side of the permanent magnet is coated with a binding agent and fixed on the sheath; the two sides of the permanent magnet 4 are tightly attached to the magnetic isolation strips 5, so that the permanent magnet can be more stably fixed on the sheath, and the phenomenon of falling off when the motor operates is prevented.
The principle of the invention is as follows: the sheath 3 can generate a part of alternating magnetic field opposite to the air gap magnetic field when the surface-mounted permanent magnet motor runs, so that the radial electromagnetic force of the air gap magnetic field acting on the stator tooth part is reduced, and the electromagnetic vibration and noise of the motor are reduced; the fixing structure (the first fixing frame 1-1, the second fixing frame 1-2 and the rotor 2) and the magnetic isolation strip 5 facilitate the permanent magnet 4 to be uniformly fixed on the sheath 3, so that the permanent magnet 4 is prevented from moving circumferentially, and the stability and the reliability of the motor operation are improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a damping takes sheath surface-mounted permanent-magnet machine rotor structure, includes first mount (1-1), second mount (1-2), rotor (2), sheath (3) and separates magnetism strip (5), its characterized in that: spiral grooves are formed in two sides of the rotor (2) and matched with the first fixing frame (1-1) and the second fixing frame (1-2).
2. The vibration-damping surface-mounted permanent magnet motor rotor structure with the sheath according to claim 1, wherein: the first fixing frame (1-1) and the second fixing frame (1-2) are made of copper.
3. The vibration-damping surface-mounted permanent magnet motor rotor structure with the sheath according to claim 1, wherein: the inner diameter of the sheath (3) is equal to the outer diameter of the rotor (2).
4. The vibration-damping surface-mounted permanent magnet motor rotor structure with the sheath according to claim 1, wherein: the thickness of the sheath (3) is 0.5 mm-2 mm.
5. The vibration-damping surface-mounted permanent magnet motor rotor structure with the sheath according to claim 1, wherein: the sheath (3) is made of copper.
6. The vibration-damping surface-mounted permanent magnet motor rotor structure with the sheath according to claim 1, wherein: and an insulating coating is arranged on the outer surface of the sheath (3).
7. The vibration-damping surface-mounted permanent magnet motor rotor structure with the sheath according to claim 1, wherein: the magnetic isolation strip (5) is provided with a spiral groove which is matched with the first fixing frame (1-1) and the second fixing frame (1-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289004.5A CN110855041A (en) | 2019-12-16 | 2019-12-16 | Vibration-damping surface-mounted permanent magnet motor rotor structure with sheath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911289004.5A CN110855041A (en) | 2019-12-16 | 2019-12-16 | Vibration-damping surface-mounted permanent magnet motor rotor structure with sheath |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110855041A true CN110855041A (en) | 2020-02-28 |
Family
ID=69609155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911289004.5A Pending CN110855041A (en) | 2019-12-16 | 2019-12-16 | Vibration-damping surface-mounted permanent magnet motor rotor structure with sheath |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110855041A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436686A (en) * | 2020-11-16 | 2021-03-02 | 肖云 | Rotor magnet mounting equipment |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060131976A1 (en) * | 2003-01-15 | 2006-06-22 | Tomohiro Kikuchi | Permanent magnet type motor |
| CN201616718U (en) * | 2010-01-20 | 2010-10-27 | 宁波海诚电器有限公司 | Rotor for permanent-magnet brushless DC motor |
| WO2014029629A2 (en) * | 2012-08-22 | 2014-02-27 | BSH Bosch und Siemens Hausgeräte GmbH | Electrical machine, in particular electric drivemotor |
| CN104638788A (en) * | 2015-02-04 | 2015-05-20 | 浙江大学 | Rotor sheath of high-speed permanent magnet motor |
| CN104852495A (en) * | 2015-05-21 | 2015-08-19 | 浙江大学 | Permanent magnet fixing structure of surface-mounted high speed permanent magnet motor |
| CN204741353U (en) * | 2015-07-23 | 2015-11-04 | 湘潭电机股份有限公司 | High -speed permanent -magnet machine rotor |
| US20150372579A1 (en) * | 2013-11-12 | 2015-12-24 | Zhongshan Broad-Ocean Motor Co., Ltd. | Permanent magnet motor having reduced torque ripple |
| CN106899103A (en) * | 2015-12-21 | 2017-06-27 | 江苏远东电机制造有限公司 | High power motor copper casting rotor |
| CN207573113U (en) * | 2017-11-30 | 2018-07-03 | 杭州三相科技有限公司 | A kind of magnet fixing structure of permanent of durface mounted permanent magnet rotor |
| CN207766049U (en) * | 2018-01-03 | 2018-08-24 | 沈阳蓝光驱动技术有限公司 | The fixing device of permanent magnet machine rotor durface mounted permanent magnet body |
| CN108447464A (en) * | 2018-04-20 | 2018-08-24 | 郑州科技学院 | Dust-proof conductive touch-control body for accurate conductive contact mechanism |
| CN208158245U (en) * | 2018-03-22 | 2018-11-27 | 哈尔滨理工大学 | A kind of novel high-speed permanent magnet motor structure |
| CN209134267U (en) * | 2018-10-22 | 2019-07-19 | 陕西航空电气有限责任公司 | A kind of smooth rotor assembly of brushless direct current motor |
-
2019
- 2019-12-16 CN CN201911289004.5A patent/CN110855041A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060131976A1 (en) * | 2003-01-15 | 2006-06-22 | Tomohiro Kikuchi | Permanent magnet type motor |
| CN201616718U (en) * | 2010-01-20 | 2010-10-27 | 宁波海诚电器有限公司 | Rotor for permanent-magnet brushless DC motor |
| WO2014029629A2 (en) * | 2012-08-22 | 2014-02-27 | BSH Bosch und Siemens Hausgeräte GmbH | Electrical machine, in particular electric drivemotor |
| US20150372579A1 (en) * | 2013-11-12 | 2015-12-24 | Zhongshan Broad-Ocean Motor Co., Ltd. | Permanent magnet motor having reduced torque ripple |
| CN104638788A (en) * | 2015-02-04 | 2015-05-20 | 浙江大学 | Rotor sheath of high-speed permanent magnet motor |
| CN104852495A (en) * | 2015-05-21 | 2015-08-19 | 浙江大学 | Permanent magnet fixing structure of surface-mounted high speed permanent magnet motor |
| CN204741353U (en) * | 2015-07-23 | 2015-11-04 | 湘潭电机股份有限公司 | High -speed permanent -magnet machine rotor |
| CN106899103A (en) * | 2015-12-21 | 2017-06-27 | 江苏远东电机制造有限公司 | High power motor copper casting rotor |
| CN207573113U (en) * | 2017-11-30 | 2018-07-03 | 杭州三相科技有限公司 | A kind of magnet fixing structure of permanent of durface mounted permanent magnet rotor |
| CN207766049U (en) * | 2018-01-03 | 2018-08-24 | 沈阳蓝光驱动技术有限公司 | The fixing device of permanent magnet machine rotor durface mounted permanent magnet body |
| CN208158245U (en) * | 2018-03-22 | 2018-11-27 | 哈尔滨理工大学 | A kind of novel high-speed permanent magnet motor structure |
| CN108447464A (en) * | 2018-04-20 | 2018-08-24 | 郑州科技学院 | Dust-proof conductive touch-control body for accurate conductive contact mechanism |
| CN209134267U (en) * | 2018-10-22 | 2019-07-19 | 陕西航空电气有限责任公司 | A kind of smooth rotor assembly of brushless direct current motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112436686A (en) * | 2020-11-16 | 2021-03-02 | 肖云 | Rotor magnet mounting equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106416025B (en) | Axail air gap type rotating electric machine | |
| CN204168098U (en) | Permanent-magnetic synchronous motor rotor | |
| US20170366054A1 (en) | Permanent magnet direct current motor and hvac system using the same | |
| KR20140021912A (en) | Axial flux permanent magnet motor | |
| CN112152355B (en) | Built-in magnetic steel tangential magnetizing disc type motor rotor | |
| CN108343671B (en) | Preparation process of magnetic bearing component | |
| US8587172B2 (en) | Sensor fastening method and sensor fastening frame for use therewith | |
| CN110855041A (en) | Vibration-damping surface-mounted permanent magnet motor rotor structure with sheath | |
| CN204012986U (en) | A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor | |
| CN105990978A (en) | Permanent magnet DC motor | |
| US11264846B2 (en) | Split stator body for an electric machine | |
| CN202183648U (en) | Surface-mounted permanent magnet motor and internal rotor and stamped piece of surface-mounted permanent magnet motor | |
| CN108832744B (en) | Surface-mounted permanent magnet motor magnetic pole structure and preparation method thereof | |
| CN103779977A (en) | Slotless type brushless DC motor | |
| CN106803709B (en) | Permanent magnet synchronous motor and assembling method thereof | |
| CN209488284U (en) | Permanent magnet DC motor | |
| KR20110053371A (en) | Ac permanent magnet synchronous electrical machine | |
| CN209170075U (en) | A kind of efficient permanent magnet buried type rotor core | |
| CN203632516U (en) | Slotless brushless direct current motor | |
| EP3961872A1 (en) | Brushless electric motor and electrical device | |
| CN110707848A (en) | Brushless servo motor | |
| KR101718741B1 (en) | Pole coil supprot plate and pole coil of salient pole type generator | |
| CN101951050A (en) | Motor rotor and have the motor of this motor rotor | |
| CN111969743A (en) | Built-in V-shaped segmented high-speed permanent magnet synchronous motor rotor punching sheet, rotor and motor | |
| CN216564679U (en) | Novel step air gap permanent magnet switch flux linkage motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |