CN201985741U - Bilateral magnetic flux switching permanent magnet linear motor - Google Patents
Bilateral magnetic flux switching permanent magnet linear motor Download PDFInfo
- Publication number
- CN201985741U CN201985741U CN2011200002719U CN201120000271U CN201985741U CN 201985741 U CN201985741 U CN 201985741U CN 2011200002719 U CN2011200002719 U CN 2011200002719U CN 201120000271 U CN201120000271 U CN 201120000271U CN 201985741 U CN201985741 U CN 201985741U
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- China
- Prior art keywords
- permanent magnet
- primary
- bilateral
- iron cores
- iron core
- 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.)
- Expired - Fee Related
Links
- 230000002146 bilateral effect Effects 0.000 title claims abstract description 21
- 230000004907 flux Effects 0.000 title claims abstract description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000000463 material Substances 0.000 claims description 3
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 claims 1
- 238000004804 winding Methods 0.000 abstract description 14
- 239000012535 impurity Substances 0.000 abstract description 3
- 229910052742 iron Inorganic materials 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 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 3
- 238000009826 distribution Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
- H02K41/031—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type
- H02K41/033—Synchronous motors; Motors moving step by step; Reluctance motors of the permanent magnet type with armature and magnets on one member, the other member being a flux distributor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Linear Motors (AREA)
Abstract
The utility model discloses a bilateral magnetic flux switching permanent magnet linear motor, which comprises secondary iron cores, primary iron cores, primary coils and permanent magnets, wherein the primary iron cores are arranged in a vertical direction; the secondary iron cores are positioned on the left side and the right side of the primary iron cores; the primary windings are wound in the primary cores; and the permanent magnets are positioned in the middle of two adjacent primary iron cores. Due to the bilateral structure of the bilateral magnetic flux switching permanent magnet linear motor, normal suction forces formed between the primary iron cores and the secondary iron cores can be mutually counteracted, and air gap fluctuation produced because of the overlarge suction forces can be weakened, so that performance of electromagnetic thrust and the running stability of the motor are improved, and the motor is suitable for long-distance linear-travel movement; and the bilateral structure has a small gap, so that impurities such as scrap iron and the like cannot easily drop into the gap, and maintenance cost of the motor is reduced.
Description
Technical field
The utility model relates to a kind of motor, especially a kind of linear motor.
Background technology
Along with the fast development of economic society, people are growing more intense to the demand of linear motor.This point can both be well embodied in the field from the industrial automation to machining etc., this mainly is because linear motor is compared with traditional electric rotating machine, it does not need extra movement transforming device to be converted to rectilinear motion with rotatablely moving, can improve efficiency of motor like this, avoid the energy loss in the movement conversion process.
Linear motor commonly used mainly contains linear induction motor and linear synchronized motor.The secondary structure of linear induction motor is fairly simple, but its power factor and efficient are lower; Linear synchronous generator then has advantages such as high efficiency, high power density, but because its winding and permanent magnet lay respectively at primary and secondary, making the electric machine structure more complicated increases cost.Permanent magnet is attractive to iron filings, so track shop permanent magnet will suck impurity, makes the maintenance of motor difficulty.
The Digit Control Machine Tool great majority adopt the single-sided linear motor at present.The motor thrust of this structure and the ratio of the suction between stator and mover are 1: 10～15, have the suction problems of too for the monolateral linear electric motors of high thrust, support the track of mover and need use sturdy construction.In addition, have certain frictional force between electric mover and the guide rail, if suction is excessive, will produce tangible frictional resistance, hinder the motion of motor, therefore there is certain limitation in this structure.
The utility model content
The utility model purpose: at the problem and shortage of above-mentioned existing existence, the purpose of this utility model provides and a kind ofly is easy to safeguard and bilateral magnetic flux that resistance is little switches permanent-magnet linear motor.
Technical scheme: for realizing above-mentioned utility model purpose, the technical solution adopted in the utility model is that a kind of bilateral magnetic flux switches permanent-magnet linear motor, comprise secondary (stator) iron core, elementary (mover) iron core, primary coil, permanent magnet, described elementary iron core vertically is provided with, secondary iron core is positioned at the left and right sides of elementary iron core, primary coil is wound on the inside of elementary iron core, and permanent magnet is positioned at the centre of adjacent two elementary iron cores.
For the normal direction suction that forms between elementary iron core and the secondary iron core is cancelled out each other, the quantity of described secondary iron core is 2.
For simplifying secondary structure, increase mechanical stability and cut down finished cost the single magnetic conductor of described secondary iron core 1 for having the teeth groove structure.
For the magnetic flux that makes the winding interlinkage constantly switches, the magnetizing direction of adjacent described permanent magnet is opposite.
Beneficial effect: the bilateral structure that the bilateral magnetic flux of the utility model switches permanent-magnet linear motor makes the normal direction suction that forms between elementary iron core and the secondary iron core to cancel out each other, weakened the air gap fluctuation that produces because of suction is excessive, thereby improve the performance of electromagnetic push and the operation stability of motor, be applicable to the rectilinear path motion of long distance; The bilateral structure gap is little, and impurity such as iron filings are not easy to fall into, and reduces the maintenance of motor cost; Secondary only permeability magnetic material for having the teeth groove structure, and do not comprise any winding or permanent magnet, simplified secondary structure, reduced the quantity of permanent magnet, saved manufacturing cost; This structure can also be simplified secondary structure, and the increase mechanical stability also cuts down finished cost; The magnetizing direction of adjacent permanent magnet is opposite, makes the magnetic flux of winding interlinkage constantly switch, and the waveform of the back electromotive force of generation and winding magnetic linkage is the three phase sine waveform, helps directly applying of three-phase alternating-current supply.
Description of drawings
Fig. 1 is the structural representation that the bilateral magnetic flux of the utility model switches permanent-magnet linear motor;
Fig. 2 is the Distribution of Magnetic Field figure that the bilateral magnetic flux of the utility model switches permanent-magnet linear motor;
Fig. 3 is the oscillogram that the bilateral magnetic flux of the utility model switches permanent-magnet linear motor winding magnetic linkage.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model, should understand these embodiment only be used to the utility model is described and be not used in the restriction scope of the present utility model, after having read the utility model, those skilled in the art all fall within the application's claims institute restricted portion to the modification of the various equivalent form of values of the present utility model.
As shown in Figure 1, the utility model motor adopts grows secondary-short primary structure, two secondary iron cores 1 are positioned at the both sides of elementary iron core 2, primary coil 4 is around in the inside of elementary iron core 2, permanent magnet 5 is positioned at the centre of two adjacent elementary iron cores 2, and the magnetizing direction of adjacent permanent magnet 5 is opposite, and the air gap 3 between elementary iron core 2 and the secondary iron core 1 is 0.5mm.Secondary iron core 1 is the permeability magnetic material for having the teeth groove structure only, and does not comprise any winding or permanent magnet; The magnetizing direction of adjacent permanent magnet is opposite, makes the magnetic flux of winding interlinkage constantly switch, and the waveform of the back electromotive force of generation and winding magnetic linkage is three-phase sine-wave.Secondary iron core 1 and elementary iron core 2 use silicon steel sheet, and permanent magnet 5 uses Nd-Fe-Bo permanent magnet material; Neodymium iron boron has characteristics such as little, the in light weight and magnetic of volume is strong, is one of permanent magnet of ratio of performance to price the best now, and it can be saved manufacturing cost, alleviate motor weight, and improves motor performance to a certain extent.Pass to three-phase alternating current in the coil windings of this motor after, alternating magnetic fields and winding current form thrust in the coil windings, realize the rectilinear motion of motor.
Distribution of Magnetic Field figure when the bilateral magnetic flux of the utility model switches permanent-magnet linear motor work as shown in Figure 2.
The waveform of winding magnetic linkage was a three-phase sine-wave when as shown in Figure 3, the bilateral magnetic flux of the utility model switched permanent-magnet linear motor work.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200002719U CN201985741U (en) | 2011-01-04 | 2011-01-04 | Bilateral magnetic flux switching permanent magnet linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200002719U CN201985741U (en) | 2011-01-04 | 2011-01-04 | Bilateral magnetic flux switching permanent magnet linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201985741U true CN201985741U (en) | 2011-09-21 |
Family
ID=44613191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200002719U Expired - Fee Related CN201985741U (en) | 2011-01-04 | 2011-01-04 | Bilateral magnetic flux switching permanent magnet linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201985741U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044951A (en) * | 2011-01-04 | 2011-05-04 | 东南大学 | Bilateral magnetic flux switching permanent magnet linear motor |
| CN105429423A (en) * | 2015-11-17 | 2016-03-23 | 中国石油大学(华东) | Bilateral Long Secondary Primary Permanent Magnet Field Modulated Linear Motor for Pumping Units |
| CN106253529A (en) * | 2015-11-04 | 2016-12-21 | 焦作市华鹰机电技术有限公司 | Band adjustment of field excitation efficient high thrust bilateral linear motor |
-
2011
- 2011-01-04 CN CN2011200002719U patent/CN201985741U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044951A (en) * | 2011-01-04 | 2011-05-04 | 东南大学 | Bilateral magnetic flux switching permanent magnet linear motor |
| CN106253529A (en) * | 2015-11-04 | 2016-12-21 | 焦作市华鹰机电技术有限公司 | Band adjustment of field excitation efficient high thrust bilateral linear motor |
| CN106253529B (en) * | 2015-11-04 | 2019-09-17 | 焦作市华鹰机电技术有限公司 | The band efficient high thrust bilateral linear motor of adjustment of field excitation |
| CN105429423A (en) * | 2015-11-17 | 2016-03-23 | 中国石油大学(华东) | Bilateral Long Secondary Primary Permanent Magnet Field Modulated Linear Motor for Pumping Units |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20140104 |