CN101789675A - Secondary of cylindrical permanent-magnet linear motor - Google Patents
Secondary of cylindrical permanent-magnet linear motor Download PDFInfo
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- CN101789675A CN101789675A CN 201010114783 CN201010114783A CN101789675A CN 101789675 A CN101789675 A CN 101789675A CN 201010114783 CN201010114783 CN 201010114783 CN 201010114783 A CN201010114783 A CN 201010114783A CN 101789675 A CN101789675 A CN 101789675A
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Abstract
The invention relates to a secondary of a cylindrical permanent-magnet linear motor, which belongs to the technical field of motors and solves the problem that the air-gap magnetic density is low as the air gap reluctance of the existing permanent-magnet linear motor is big. The secondary is of the axial symmetry structure and comprises a plurality of iron cores and a plurality of permanent magnets; an outer sleeve and an inner sleeve or a cylinder is made of non-magnetic permeability material; the iron cores and the permanent magnets are of the ring shape and are tightly arranged and fixed at intervals between the outer sleeve and the inner sleeve or the cylinder; on the radial cross section of the secondary, every two adjacent permanent magnets form the V shape or the reversed-V shape; the included angle B between the two adjacent permanent magnets is (0 degree, 180 degrees); four continuously-adjacent W-shaped permanent magnets and the middle iron cores form a pair of poles; and the included angles between the central line of the inner sleeve or the cylinder and the magnetizing direction of each permanent magnet in each pair of poles are that: A1=B/2, A2=180 degrees-B/2, A3=180 degrees+B/2, and A4=360 degrees-B/2. The secondary is applicable to the existing cylindrical permanent-magnet linear motor.
Description
Technical field
The present invention relates to a kind of secondary structure of cylindrical permanent-magnet linear motor, belong to technical field of motors.
Background technology
Now, based on the direct drive technology of linear electric motors, saved middle complicated transmission mechanism, in lathe, elevator isoline motion applications, and its application expands each field that produces and live just gradually to.Wherein, cylindrical linear motor has advantages such as winding utilization height, no lateral ends winding, no unilateral magnetic force, in the rectilinear motion occasion very high practical value is arranged.And the cylindrical linear motor of slotless configuration, no slot effect, force oscillation is little, but because the increase of physics air gap, make air-gap reluctance big, air gap flux density reduces, therefore, for improving air gap flux density, need by suitably increasing permanent magnet thickness, the expectation permanent magnet sends the magnetic flux area and increases.
Summary of the invention
For the air-gap reluctance that solves existing permanent-magnetism linear motor causes the low problem of air gap flux density greatly, the secondary of a kind of cylindrical permanent-magnet linear motor proposed.
The secondary of a kind of cylindrical permanent-magnet linear motor of the present invention is axially symmetric structure, it comprises a plurality of iron cores, outer sleeve, inner sleeve or cylinder and a plurality of permanent magnet, described outer sleeve and inner sleeve or cylinder are made by non-magnet material, iron core and permanent magnet are circular, a plurality of iron cores and a plurality of permanent magnet all are fixed between outer sleeve and inner sleeve or the cylinder, and the alternate tight arrangement of a plurality of iron cores with a plurality of permanent magnet, on secondary radial section, every two adjacent permanent magnets are formed positive V font or inverted v-shaped, and angle is B between two adjacent permanent magnets, the span of described included angle B is (0 °, 180 °), 4 permanent magnets of continuous adjacent are formed W shape, 4 permanent magnets of described continuous adjacent and middle iron core thereof the magnetic pole that partners, inner sleeve or cylinder central axis and the angle between the magnetizing direction of the individual permanent magnet in the every pair of magnetic pole be followed successively by:
A 1=
B/ 2,
A 2=180 °-
B/ 2,
A 3=180 °+
B/ 2,
A 4=360 °-
B/ 2.
Permanent magnet in the secondary structure of the present invention is and the radially angled placement of motor, makes and can realize placing more permanent magnet in certain space.Be iron core between each two permanent magnet in extremely among the present invention, under the situation of the volume that increases a small amount of permanent magnet, make all poly-magnetic of the iron core in the middle of it of magnetic flux that two permanent magnets under each extremely produce, increase permanent magnet and sent magnetic flux area and magnetic potential, improve air gap flux density, thereby reached the technique effect of the pushing force density that improves motor.
Cylindrical permanent-magnet linear motor of the present invention secondary is applicable to existing cylindrical permanent-magnet linear motor.
Description of drawings
Fig. 1 is for adopting the structural representation of secondary cylindrical permanent-magnet linear motor of the present invention.Fig. 2 is the secondary structural representation of cylindrical permanent-magnet linear motor of the present invention.The A-A cutaway view of Fig. 3 Fig. 2.Fig. 4 is the structural representation of a pair of magnetic pole described in the embodiment two.Fig. 5 is the structural representation of embodiment three described a pair of magnetic poles.
Embodiment
Embodiment one, the secondary of the described a kind of cylindrical permanent-magnet linear motor of present embodiment is axially symmetric structure, it comprises a plurality of iron cores 4, outer sleeve 6, inner sleeve or cylinder 8 and a plurality of permanent magnet 5, described outer sleeve 6 and inner sleeve or cylinder 8 are made by non-magnet material, iron core 4 and permanent magnet 5 are circular, a plurality of iron cores 4 and a plurality of permanent magnet 5 all are fixed between outer sleeve 6 and inner sleeve or the cylinder 8, and a plurality of iron cores 4 and the 5 alternate tight arrangements of a plurality of permanent magnet, on secondary radial section, every two adjacent permanent magnets are formed positive V font or inverted v-shaped, and angle is B between two adjacent permanent magnets, the span of described included angle B is (0 °, 180 °), 4 permanent magnets of continuous adjacent are formed W shape, 4 permanent magnets of described continuous adjacent and middle iron core thereof the magnetic pole that partners, inner sleeve or cylinder 8 central axis and the angle between the magnetizing direction of 4 permanent magnets in the every pair of magnetic pole be followed successively by:
A 1=
B/ 2,
A 2=180 °-
B/ 2,
A 3=180 °+
B/ 2,
A 4=360 °-
B/ 2.
In the described cylindrical permanent-magnet linear motor of present embodiment secondary, the magnetizing direction of all permanent magnets all is axial angled with motor, makes and can place permanent magnet more in certain volume.
Described secondary when being positioned at the elementary outside when present embodiment, inner sleeve or cylinder 8 are sleeve-like, the elementary sleeve-like that is arranged in described inner sleeve or cylinder 8.
Secondaryly be positioned at elementaryly when inboard when present embodiment is described, inner sleeve or cylinder 8 both can be sleeve-like, also can be cylinder.
In the described cylindrical permanent-magnet linear motor of present embodiment secondary, accompany iron core between two permanent magnets, make the poly-magnetic of the iron core of two permanent magnets in the middle of it, thereby increased magnetic flux area and magnetic potential that permanent magnet sends, reached the technique effect that improves air gap flux density, improves the pushing force density of motor.
Embodiment two, present embodiment are secondary the further specifying to embodiment one described a kind of cylindrical permanent-magnet linear motor, the described permanent magnet 5 of present embodiment is shaped as parallelogram on secondary radial section, two limits that are parallel to each other of described parallelogram closely contact with the inwall of outer sleeve 6 and the outer wall of inner sleeve or cylinder 8 respectively, in addition two limits that are parallel to each other of described parallelogram and the magnetizing direction of described permanent magnet 5 are perpendicular, and closely cooperate with adjacent iron core 4 respectively.
The cross section of the permanent magnet in the present embodiment is a parallelogram, can make permanent magnet fill up the space of iron core 4 and outer sleeve 6, inner sleeve or cylinder 8 formation.
The structure of the described secondary a pair of magnetic pole of present embodiment is described referring to Fig. 4.Fig. 4 is the partial enlarged drawing at a pair of magnetic pole position on the secondary axial cross section, the cross section of all permanent magnets 5 is a parallelogram among the figure, two minor faces in the described parallelogram closely contact with the inwall of outer sleeve 6 and the outer wall of inner sleeve or cylinder 8 respectively, two the long limits of described parallelogram and the magnetizing direction of described permanent magnet 5 are perpendicular, and closely cooperate with adjacent iron core 4 respectively, included angle B=60 between adjacent two permanent magnet 5-1 and the 5-2 °, described two permanent magnet 5-1 and 5-2 form the magnetic pole of V font, between two permanent magnet 5-1 and the 5-2 is iron core 4, four permanent magnet 5-1 of continuous adjacent, 5-2,5-3 and 5-4 form the W shape magnetic pole that partners, the width of described magnetic pole is T, and the angle between the central axis of inner sleeve or cylinder 8 and the magnetizing direction of permanent magnet 5-1 is
A 1=
B/ 2=30 °, the angle between the central axis of inner sleeve or cylinder 8 and the magnetizing direction of permanent magnet 5-2 is
A 2=180 °-
B/ 2=150 °, the angle between the central axis of inner sleeve or cylinder 8 and the magnetizing direction of permanent magnet 5-3 is
A 3=180 °+
B/ 2=210 °, the angle between the central axis of inner sleeve or cylinder 8 and the magnetizing direction of permanent magnet 5-4 is
A 4=360 °-
B/ 2=330 °.Two permanent magnet 5-1 in magnetic pole are relative with the magnetizing direction of 5-2, and two permanent magnet 5-3 in another magnetic pole and the magnetizing direction of 5-4 are opposing.
Embodiment three, present embodiment are secondary the further specifying to embodiment one described a kind of cylindrical permanent-magnet linear motor, the described permanent magnet 5 of present embodiment is shaped as rectangle on secondary radial section, two angles that described rectangle is relative closely contact with the inwall of outer sleeve 6 and the outer wall of inner sleeve or cylinder 8 respectively, in addition two relative angles of described rectangle and adjacent permanent magnet 5 are adjoining or contact, the magnetizing direction of described permanent magnet is perpendicular to the limit of rectangle, and described limit is permanent magnet 5 and iron core 4 close-fitting limits.
The cross section of the described permanent magnet 5 in secondary of present embodiment is a rectangle, lack than the permanent magnet use amount of embodiment two described secondary structures, and processing technology is simpler.
All form a plurality of spaces between the outer wall of a plurality of permanent magnets 5 in the present embodiment and the inwall of outer sleeve 6 and inner sleeve or cylinder 8, described space is along the gap 12 of secondary axial formation, this gap 12 has certain for the magnetic effect, and described gap 12 can adopt non-magnet material to fill.
In secondary described in the present embodiment, become the part of the actual air gap of motor with the gap of an elementary adjacent side.
The structure of the described secondary a pair of magnetic pole of present embodiment is described referring to Fig. 5.Fig. 5 is the partial enlarged drawing at a pair of secondary position on the secondary axial cross section, the difference of the magnetic pole that this figure and Fig. 4 are represented is that the cross section of all permanent magnets is a rectangle, all forms a plurality of gaps 12 between the outer wall of the inwall of every two adjacent permanent magnets and outer sleeve 6 and inner sleeve or cylinder 8.
Embodiment four: present embodiment is described to be to adopt embodiment one, secondary a kind of cylindrical permanent-magnet linear motor of two or three, this motor comprises primary and secondary, the described elementary end cap 1 that comprises, elementary iron core 3, smooth-core armature winding 2 and sliding bearing 7, elementary iron core 3 circle of position tubulars, smooth-core armature winding 2 is fixed on the madial wall of described elementary iron core 3, the secondary inboard that is positioned at described elementary iron core 3, between described smooth-core armature winding 2 and the secondary outer sleeve 6 is air gap, two end caps 1 are respectively and elementary two ends, and described sleeve 6 is by sliding bearing 7 and elementary being slidingly connected.
In the structure of above-mentioned cylindrical shape word linear electric motors, the outer sleeve 6 in secondary plays the effect as the linear motion guide rail of linear electric motors.
Claims (4)
1. a cylindrical permanent-magnet linear motor is secondary, described secondary be axially symmetric structure, it is characterized in that it is by a plurality of iron cores (4), outer sleeve (6), inner sleeve or cylinder (8) and a plurality of permanent magnet (5) are formed, described outer sleeve (6) and inner sleeve or cylinder (8) are made by non-magnet material, iron core (4) and permanent magnet (5) are circular, a plurality of iron cores (4) and a plurality of permanent magnet (5) all are fixed between outer sleeve (6) and inner sleeve or the cylinder (8), and the alternate tight arrangement of a plurality of iron cores (4) with a plurality of permanent magnet (5), on secondary radial section, every two adjacent permanent magnets are formed positive V font or inverted v-shaped, and angle is B between two adjacent permanent magnets, the span of described included angle B is (0 °, 180 °), 4 permanent magnets of continuous adjacent are formed W shape, 4 permanent magnets of described continuous adjacent and middle iron core thereof the magnetic pole that partners, inner sleeve or cylinder (8) central axis and the angle between the magnetizing direction of 4 permanent magnets in the every pair of magnetic pole be followed successively by:
A 1=
B/ 2,
A 2=180 °-
B/ 2,
A 3=180 °+
B/ 2,
A 4=360 °-
B/ 2.
2. a kind of cylindrical permanent-magnet linear motor according to claim 1 is secondary, it is characterized in that described permanent magnet (5) is shaped as parallelogram on secondary radial section, two limits that are parallel to each other of described parallelogram closely contact with the inwall of outer sleeve (6) and the outer wall of inner sleeve or cylinder (8) respectively, in addition two limits that are parallel to each other of described parallelogram and the magnetizing direction of described permanent magnet (5) are perpendicular, and closely cooperate with adjacent iron core (4) respectively.
3. a kind of cylindrical permanent-magnet linear motor according to claim 1 is secondary, it is characterized in that described permanent magnet (5) is shaped as rectangle on secondary radial section, two angles that described rectangle is relative closely contact with the inwall of outer sleeve (6) and the outer wall of inner sleeve or cylinder (8) respectively, in addition two relative angles of described rectangle are adjoining with adjacent permanent magnet (5) or contact, the magnetizing direction of described permanent magnet is perpendicular to the limit of rectangle, described limit is permanent magnet (5) and the close-fitting limit of iron core (4), all form a plurality of spaces between the outer wall of the inwall of a plurality of permanent magnets (5) and outer sleeve (6) and inner sleeve or cylinder (8), described space is along the gap (12) of secondary axial formation.
4. a kind of cylindrical permanent-magnet linear motor according to claim 3 is secondary, it is characterized in that, described gap (12) adopt non-magnet material to fill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101147838A CN101789675B (en) | 2010-02-26 | 2010-02-26 | Secondary of cylindrical permanent-magnet linear motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101147838A CN101789675B (en) | 2010-02-26 | 2010-02-26 | Secondary of cylindrical permanent-magnet linear motor |
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| Publication Number | Publication Date |
|---|---|
| CN101789675A true CN101789675A (en) | 2010-07-28 |
| CN101789675B CN101789675B (en) | 2011-12-21 |
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|---|---|---|---|
| CN2010101147838A Active CN101789675B (en) | 2010-02-26 | 2010-02-26 | Secondary of cylindrical permanent-magnet linear motor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932858A (en) * | 2016-04-27 | 2016-09-07 | 霍勇贤 | Coreless permanent magnet linear motor stator having magnetic congregate effect and manufacturing method thereof |
| CN108494218A (en) * | 2018-02-09 | 2018-09-04 | 黄淮学院 | A kind of bilateral internal type V permanent magnet linear generator, seabed formula wave energy generating set and control method |
| CN108736675A (en) * | 2018-07-05 | 2018-11-02 | 中国科学院宁波材料技术与工程研究所 | A kind of moving-coil type unipolarity permanent magnet rotational alignment motor |
| CN113612365A (en) * | 2021-09-08 | 2021-11-05 | 北京航空航天大学 | Halbach-like magnetic pole array structure body for linear motor |
| CN113612328A (en) * | 2021-09-08 | 2021-11-05 | 北京航空航天大学 | Halbach-like magnetic pole array structure body for rotating motor |
| WO2022047893A1 (en) * | 2020-09-03 | 2022-03-10 | 瑞声声学科技(深圳)有限公司 | Linear electric motor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001112231A (en) * | 1999-10-01 | 2001-04-20 | Toyota Autom Loom Works Ltd | Linear induction motor |
| CN101159408A (en) * | 2007-11-19 | 2008-04-09 | 哈尔滨工业大学 | Cylinder-shaped polyphase linear permanent-magnet synchronous generator |
-
2010
- 2010-02-26 CN CN2010101147838A patent/CN101789675B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001112231A (en) * | 1999-10-01 | 2001-04-20 | Toyota Autom Loom Works Ltd | Linear induction motor |
| CN101159408A (en) * | 2007-11-19 | 2008-04-09 | 哈尔滨工业大学 | Cylinder-shaped polyphase linear permanent-magnet synchronous generator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105932858A (en) * | 2016-04-27 | 2016-09-07 | 霍勇贤 | Coreless permanent magnet linear motor stator having magnetic congregate effect and manufacturing method thereof |
| CN105932858B (en) * | 2016-04-27 | 2019-09-20 | 霍勇贤 | Coreless permanent magnet linear motor stator electric and its manufacturing method with poly- magnetic effect |
| CN108494218A (en) * | 2018-02-09 | 2018-09-04 | 黄淮学院 | A kind of bilateral internal type V permanent magnet linear generator, seabed formula wave energy generating set and control method |
| CN108736675A (en) * | 2018-07-05 | 2018-11-02 | 中国科学院宁波材料技术与工程研究所 | A kind of moving-coil type unipolarity permanent magnet rotational alignment motor |
| CN108736675B (en) * | 2018-07-05 | 2023-11-14 | 中国科学院宁波材料技术与工程研究所 | Moving-coil type unipolar permanent magnet rotary linear motor |
| WO2022047893A1 (en) * | 2020-09-03 | 2022-03-10 | 瑞声声学科技(深圳)有限公司 | Linear electric motor |
| CN113612365A (en) * | 2021-09-08 | 2021-11-05 | 北京航空航天大学 | Halbach-like magnetic pole array structure body for linear motor |
| CN113612328A (en) * | 2021-09-08 | 2021-11-05 | 北京航空航天大学 | Halbach-like magnetic pole array structure body for rotating motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101789675B (en) | 2011-12-21 |
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