CN111668946A - Stator structure of cylindrical linear motor - Google Patents
Stator structure of cylindrical linear motor Download PDFInfo
- Publication number
- CN111668946A CN111668946A CN202010394418.0A CN202010394418A CN111668946A CN 111668946 A CN111668946 A CN 111668946A CN 202010394418 A CN202010394418 A CN 202010394418A CN 111668946 A CN111668946 A CN 111668946A
- Authority
- CN
- China
- Prior art keywords
- stator
- stator core
- motor
- linear motor
- cylindrical linear
- 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
- 238000004804 winding Methods 0.000 claims abstract description 11
- 229910000976 Electrical steel Inorganic materials 0.000 claims abstract description 7
- 238000010030 laminating Methods 0.000 claims abstract description 5
- 230000017525 heat dissipation Effects 0.000 abstract description 4
- 238000000638 solvent extraction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000001360 synchronised effect Effects 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Linear Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a stator structure of a cylindrical linear motor, which comprises a motor shell, wherein the bottom of the motor shell is connected with a lower end cover through a fastener, a coil winding and a stator core are sequentially arranged in a cavity of the motor shell, the top of the motor shell is connected with an upper end cover through a fastener, the stator core comprises a stator core block, and one end of the stator core block is provided with a plurality of stator slots; the stator core is formed by laminating a plurality of silicon steel sheets along the circumferential direction, the eddy current loss of the stator core can be effectively reduced, the quality of the motor stator is reduced by the way of partitioning the stator core, the processing cost is reduced, the power density of the motor is improved, and the heat dissipation of the cylindrical linear motor is facilitated due to the fact that a large number of gaps exist between different stator cores.
Description
Technical Field
The invention relates to a stator structure of a cylindrical linear motor, and belongs to the technical field of linear motors.
Background
The linear motor can be considered to be formed by conveniently converting and developing the structure of the rotary motor, and can be considered as that one rotary motor is cut along the radial direction, and then the circumference of the motor is stretched into a straight line. This results in the original linear motor evolved from a rotary motor. The side from which the stator of the rotating machine evolves is called the primary side and the side from which the rotor of the rotating machine evolves is called the secondary side. The radial direction, the circumferential direction and the axial direction of the rotating motor respectively correspond to the normal direction, the longitudinal direction and the transverse direction of the linear motor. A moving part of the linear motor may be referred to as a mover, and a stationary part may be referred to as a stator.
The linear motor mainly has the following characteristics: the linear motor does not need an additional device for changing rotary motion into linear motion, so that the structure of the system is greatly simplified, and the weight and the volume are greatly reduced; secondly, the positioning precision is high, and the linear motor can realize direct transmission in places needing linear motion, so that various positioning errors caused by intermediate links can be eliminated; thirdly, the reaction speed is fast, the sensitivity is high, and the follow-up property is good. The linear motor rotor and the stator always keep a certain air gap without contact, so that the contact friction resistance between the stator and the rotor is eliminated, and the sensitivity, the rapidity and the follow-up property of the system are greatly improved; fourthly, the work is safe and reliable, the service life is long. The linear motor can realize non-contact force transmission, and the mechanical friction loss is almost zero, so that the linear motor has few faults, is safe and reliable, and has long service life.
An existing single-phase alternating-current permanent magnet synchronous linear generator (publication number: 109617361A) is high in processing cost, large in iron core loss, large in stator mass and poor in motor heat dissipation condition due to the fact that a stator iron core is only laminated in the circumferential direction and is not spliced in blocks.
Disclosure of Invention
The invention provides a stator structure of a cylindrical linear motor, which is used for overcoming the defects in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
the invention discloses a stator structure of a cylindrical linear motor, which comprises a motor shell, wherein the bottom of the motor shell is connected with a lower end cover through a fastener, a coil winding and a stator core are sequentially arranged in a cavity of the motor shell, the top of the motor shell is connected with an upper end cover through a fastener, the stator core comprises a stator core block, and one end of the stator core block is provided with a plurality of stator slots.
Further, coil windings are placed in stator slots of the stator core.
Furthermore, the stator core blocks are formed by laminating silicon steel sheets along the circumferential direction.
Further, the stator core block is located in the cavity of the core.
Further, the number of stator slots matches the number of coil windings.
Furthermore, a plurality of tooth-shaped grooves are uniformly distributed on the inner side of the motor shell in the circumferential direction and used for placing the stator core.
The invention has the following beneficial effects:
(1) the stator core is formed by laminating a plurality of silicon steel sheets along the circumferential direction, so that the eddy current loss of the stator core can be effectively reduced.
(2) Through the mode with stator core blocking, reduce motor stator's quality, reduce the processing cost, improve the power density of motor.
(3) Because a large number of gaps exist among different stator cores, the heat dissipation of the cylindrical linear motor is facilitated.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall construction of the stator structure of the present invention;
FIG. 2 is a cross-sectional structural schematic of the stator structure of the present invention;
FIG. 3 is a schematic view of a motor housing of the present invention;
fig. 4 is a schematic view of the structure of the stator core of the present invention.
In the figure: 1. an upper end cover; 2. a stator slot; 3. a stator core; 31. a stator core block; 4. a coil winding; 5. a toothed groove; 6. a motor housing; 7. and a lower end cover.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Examples
As shown in fig. 1-4, a stator structure of a cylindrical linear motor comprises a motor housing 6, wherein the bottom of the motor housing 6 is connected with a lower end cover 7 through a fastener, a coil winding 4 and a stator core 3 are sequentially arranged in a cavity of the motor housing, and the top of the motor housing is connected with an upper end cover 1 through a fastener;
the stator core 3 comprises a stator core block 31, and one end of the stator core block 31 is provided with a plurality of stator slots 2.
The coil windings 4 are placed in the stator slots 2 of the stator core 3.
The motor shell 6 is provided with a plurality of tooth-shaped grooves 5 uniformly distributed in the circumferential direction at the inner side for placing the stator core 3.
The stator core blocks 31 are formed by laminating silicon steel sheets in the circumferential direction.
The stator core blocks 31 are located in the cavity of the core 3.
The number of stator slots 2 matches the number of coil windings 4.
When the linear motor works, the plurality of stator iron core blocks 31 jointly form a magnetic circuit of the stator, the structure that the whole iron core is adopted as the stator in the traditional cylindrical linear motor is replaced, and the eddy current loss in the magnetic circuit is effectively reduced. Meanwhile, the mode of silicon steel sheet blocking is adopted, so that the using amount of the silicon steel sheets is reduced, the quality of a motor stator is reduced, the manufacturing cost is reduced, and the power density of the motor is improved. A large number of gaps exist between the plurality of stator core blocks 31, improving the heat dissipation capability of the motor.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The stator structure of the cylindrical linear motor is characterized by comprising a motor shell, wherein the bottom of the motor shell is connected with a lower end cover through a fastener, a coil winding and a stator core are sequentially arranged in a cavity of the motor shell, and the top of the motor shell is connected with an upper end cover through a fastener;
the stator core comprises a stator core block, and one end of the stator core block is provided with a plurality of stator slots.
2. The stator structure of a cylindrical linear motor according to claim 1, wherein the stator core blocks are formed by laminating silicon steel sheets in a circumferential direction.
3. The stator structure of a cylindrical linear motor according to claim 1, wherein the stator core blocks are located in a cavity of a core.
4. The stator structure of a cylindrical linear motor according to claim 1, wherein said coil windings are placed in stator slots of said stator core.
5. The stator structure of a cylindrical linear motor according to claim 1, wherein the number of stator slots matches the number of coil windings.
6. The stator structure of a cylindrical linear motor according to claim 1, wherein the motor housing has a plurality of teeth grooves uniformly distributed in a circumferential direction thereof on an inner side thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394418.0A CN111668946A (en) | 2020-05-11 | 2020-05-11 | Stator structure of cylindrical linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010394418.0A CN111668946A (en) | 2020-05-11 | 2020-05-11 | Stator structure of cylindrical linear motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111668946A true CN111668946A (en) | 2020-09-15 |
Family
ID=72383322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010394418.0A Pending CN111668946A (en) | 2020-05-11 | 2020-05-11 | Stator structure of cylindrical linear motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111668946A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000236653A (en) * | 1999-02-15 | 2000-08-29 | Sanyo Electric Co Ltd | Stator of linear motor and manufacture thereof |
| CN1549433A (en) * | 2003-05-20 | 2004-11-24 | 乐金电子(天津)电器有限公司 | Method for producing reciprocating linear electric motor and its stator iron core silicon steel sheet |
| CN1573094A (en) * | 2003-06-20 | 2005-02-02 | 三星电子株式会社 | Linear compressor and method of producing the same |
| CN202183720U (en) * | 2011-09-13 | 2012-04-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Linear motor and compressor with same |
| CN106374714A (en) * | 2016-11-02 | 2017-02-01 | 深圳市兆业电子科技有限公司 | Permanent magnet linear motor |
| JP2017077135A (en) * | 2015-10-16 | 2017-04-20 | スズキ株式会社 | Rotary electric machine |
| CN108092482A (en) * | 2017-12-26 | 2018-05-29 | 中国人民解放军海军工程大学 | A kind of drum type brake has slot line inductance electromotor |
| CN111030414A (en) * | 2019-12-26 | 2020-04-17 | 兰州空间技术物理研究所 | Single-phase cylindrical linear oscillation motor |
| CN212588156U (en) * | 2020-05-11 | 2021-02-23 | 江苏铱莱德驱动系统有限公司 | Stator structure of cylindrical linear motor |
-
2020
- 2020-05-11 CN CN202010394418.0A patent/CN111668946A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000236653A (en) * | 1999-02-15 | 2000-08-29 | Sanyo Electric Co Ltd | Stator of linear motor and manufacture thereof |
| CN1549433A (en) * | 2003-05-20 | 2004-11-24 | 乐金电子(天津)电器有限公司 | Method for producing reciprocating linear electric motor and its stator iron core silicon steel sheet |
| CN1573094A (en) * | 2003-06-20 | 2005-02-02 | 三星电子株式会社 | Linear compressor and method of producing the same |
| CN202183720U (en) * | 2011-09-13 | 2012-04-04 | 珠海格力节能环保制冷技术研究中心有限公司 | Linear motor and compressor with same |
| JP2017077135A (en) * | 2015-10-16 | 2017-04-20 | スズキ株式会社 | Rotary electric machine |
| CN106374714A (en) * | 2016-11-02 | 2017-02-01 | 深圳市兆业电子科技有限公司 | Permanent magnet linear motor |
| CN108092482A (en) * | 2017-12-26 | 2018-05-29 | 中国人民解放军海军工程大学 | A kind of drum type brake has slot line inductance electromotor |
| CN111030414A (en) * | 2019-12-26 | 2020-04-17 | 兰州空间技术物理研究所 | Single-phase cylindrical linear oscillation motor |
| CN212588156U (en) * | 2020-05-11 | 2021-02-23 | 江苏铱莱德驱动系统有限公司 | Stator structure of cylindrical linear motor |
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