CN213547339U - Double-stator split-tooth type cylindrical linear motor and driving mechanism - Google Patents
Double-stator split-tooth type cylindrical linear motor and driving mechanism Download PDFInfo
- Publication number
- CN213547339U CN213547339U CN202022983739.2U CN202022983739U CN213547339U CN 213547339 U CN213547339 U CN 213547339U CN 202022983739 U CN202022983739 U CN 202022983739U CN 213547339 U CN213547339 U CN 213547339U
- Authority
- CN
- China
- Prior art keywords
- stator
- rotor
- split
- double
- linear motor
- 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.)
- Active
Links
- 230000007246 mechanism Effects 0.000 title claims description 10
- 238000004804 winding Methods 0.000 claims abstract description 47
- 230000004907 flux Effects 0.000 claims description 14
- 229910000859 α-Fe Inorganic materials 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 11
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 2
- 238000009826 distribution Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- 230000005415 magnetization Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 210000003781 tooth socket Anatomy 0.000 description 1
Images
Landscapes
- Linear Motors (AREA)
Abstract
The utility model provides a double-stator split-tooth cylindrical linear motor, which comprises an inner stator, a rotor and an outer stator; the rotor is of a magnetic-gathering permanent magnet rotor structure, the permanent magnets are horizontally magnetized along the moving direction of the rotor, and the magnetizing directions of two adjacent permanent magnets are opposite; the outer stator is provided with a phase group concentrated winding, and the inner stator is not provided with a winding; the inner stator and the outer stator both adopt a split tooth structure; each stator has a certain air gap distance from the rotor, the two air gap distances are equal, and the two stators have an offset of the width of the main stator teeth along the moving direction of the rotor. The scheme possess high power density and high output thrust, and restrain magnetic drag and thrust fluctuation effectively.
Description
Technical Field
The utility model relates to a linear electric motor manufacturing and designing field especially relates to a two stators split tooth formula drum type linear electric motor and actuating mechanism.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The flexible conveying system generally adopts a linear motor, compared with a rotating motor, the linear motor can directly realize linear motion without a conversion mechanism, and has the advantages of simple structure, small volume, low cost and high energy conversion efficiency, so the flexible conveying system has obvious advantages in the application of the conveying system.
The inventor finds that the traditional linear motor has the problems of more magnetic leakage and high air gap sensitivity; in the prior art, a permanent magnet linear motor with magnetic gathering ferrite is adopted to improve the electromagnetic thrust of the motor, and then larger magnetic resistance and electromagnetic thrust fluctuation are brought; the electromagnetic thrust fluctuation further causes unacceptable vibration noise and poor position control, and finally causes operation failure; therefore, the structure and performance of the linear motor used in the flexible conveying system at present need to be optimized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve above-mentioned problem, provide a two stators split tooth formula drum type linear electric motor and actuating mechanism, can effectively restrain magnetic resistance and thrust fluctuation, promote power density, improved the working property of motor.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a double-stator split-tooth cylindrical linear motor comprises a rotor and two unilateral stators which face each other and are arranged on two sides of the rotor, wherein each unilateral stator comprises an inner stator and an outer stator;
the stator comprises an outer stator, an inner stator and a rotor, wherein the outer stator and the inner stator are respectively provided with 3 split teeth, the outer stator is internally provided with a phase group concentrated coil winding, the inner stator is not provided with a winding, the two stators are respectively provided with a certain air gap distance from the rotor, the two air gap distances are equal, and the two stators have an offset of the width of the main stator teeth along the moving direction of the rotor;
the mover adopts a mover structure with a magnetic flux polymerization effect, namely, the ferrite permanent magnet is horizontally magnetized along the moving direction of the mover.
A driving mechanism comprises the double-stator split-tooth cylindrical linear motor.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) the linear motor of the utility model adopts a magnetism-gathering permanent magnet rotor structure, has a magnetic flux gathering effect, can adopt a low-cost ferrite permanent magnet while ensuring the high performance of the motor, thereby greatly reducing the production and manufacturing cost of the motor; the linear motor adopts a phase group concentrated winding mode, each phase of winding on the stator is in a modular design, the fault-tolerant capability of the motor is greatly improved, the winding coefficient is improved, the end winding is reduced, and the copper consumption is reduced by adopting the concentrated winding, so that the motor efficiency is improved.
(2) The linear motor adopts a split-tooth type stator structure, each main stator tooth is split into 3 split teeth, the magnetic flux modulation effect is achieved, the magnetic resistance and thrust fluctuation of the motor are inhibited, and the output performance of the motor is improved; and simultaneously, linear electric motor's two unilateral stators adopt the dislocation technique, and two stators have realized the magnetic flow polymerization in turn along the distance of a main stator tooth (groove) width of active cell direction of motion skew promptly, have improved the air gap flux density wave form, have improved the electromagnetic thrust of motor, have reduced magnetic resistance simultaneously, have restrained thrust fluctuation. The utility model discloses when the motor has high thrust density, good efficiency, have low manufacturing cost, low magnetic resistance and the undulant advantage of low electromagnetic thrust.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
Fig. 1 is a structural side view of a double-stator split-tooth cylindrical linear motor according to a first embodiment of the present invention;
fig. 2 is a schematic partial structural cross-sectional view of a double-stator split-tooth cylindrical linear motor according to a first embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a tooth structure of a double-stator split-tooth cylindrical linear motor according to a first embodiment of the present invention;
wherein, 1, an inner stator; 2. an outer stator; 3. a mover; 4. a ferrite permanent magnet; 5. an armature winding; 6. an A-phase armature winding; 7. a B-phase armature winding; 8. a C-phase armature winding; 9. a main stator tooth; 10. splitting the teeth; the direction of the arrow on the permanent magnet indicates its magnetization direction, ● on the winding represents current flow in perpendicular to the page, and x represents current flow out perpendicular to the page.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings and specific embodiments.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
The first embodiment is as follows:
the purpose of this embodiment is to provide a two stator split teeth formula cylinder type linear electric motor.
A double-stator split-tooth cylindrical linear motor comprises a rotor and two unilateral stators which face each other and are arranged on two sides of the rotor, wherein each unilateral stator comprises an inner stator and an outer stator;
the stator comprises an inner stator, an outer stator and a rotor, wherein the inner stator and the outer stator are respectively provided with 3 split teeth, the outer stator is internally provided with a phase group concentrated coil winding, the inner stator is not provided with a winding, the two stators are respectively provided with a certain air gap distance from the rotor, the two air gap distances are equal, and the two stators have an offset of the width of the main stator teeth along the moving direction of the rotor;
the mover adopts a mover structure with a magnetic flux polymerization effect, namely, the ferrite permanent magnet is horizontally magnetized along the moving direction of the mover.
Specifically, as shown in fig. 1, in order to provide a side view of the structure of the double-stator split-tooth cylindrical linear motor in the embodiment of the present invention, the motor is composed of an inner stator 1, an outer stator 2 and a rotor 3, and an air gap is provided between two sides of the two stators and the rotor. The length of the stator is shorter than that of the rotor, and the stator is composed of salient pole iron cores.
The motor inner stator is not provided with the permanent magnets and the armature winding, the outer stator is not provided with the permanent magnets but provided with the armature winding, the armature winding adopts a phase group concentrated winding mode, and as shown in fig. 2, ● is opposite to the current direction represented by the symbol x. The double stators are distributed on two sides of the rotor, and the stator preferably adopts a split tooth structure for magnetic flux modulation. The stator is a fixed end, and the rotor is a moving end and can freely move in the horizontal direction.
The number of turns n of the phase taking group of the outer stator of the motor1Is 2, the number n of each phase group 21, namely 6 tooth sockets are arranged on each stator unit, an outer stator winding is wound on main stator teeth in a phase group concentrated winding mode, each 2 main stator teeth belong to one phase, and as shown in fig. 2, the main stator teeth sequentially form a phase A, a phase B and a phase C from left to right; the tooth width and the groove width of the main stator in the same phase are equal to each other and are both w (w is determined according to the specific size of the motor), the groove width between different phases is 5w/3, and the ratio of the groove width in the same phase to the groove width between different phases is 3:5, so that three-phase symmetrical windings are formed in space to form three-phase balanced counter electromotive force.
No winding is arranged in the tooth grooves of the inner stator of the motor, the tooth grooves are distributed as same as the outer stator of the motor, the number of the main stator teeth in each phase is 2, and the number of each phase group is 1 (namely n1＝2，n21), the tooth width and the groove width of the main stator in the same phase are both w, the groove width between different phases is 5w/3, and the ratio of the groove width in the same phase to the groove width between different phases is 3: 5; the inner stator and the outer stator of the motor are offset by a distance of one slot width along the moving direction of the rotor, so that the magnetic resistance force and the electromagnetic thrust force fluctuation are restrained.
The motor stator adopts a split tooth structure, the tail end of each main stator tooth is split into 3 split teeth with the same width, as shown in fig. 3, and therefore magnetic resistance force and electromagnetic thrust force fluctuation are restrained. Each stator has an extension of the main stator teeth at each end, taking into account the magnetic path at the ends of the stator.
The motor rotor adopts a structure with a magnetic flux polymerization effect, the ferrite permanent magnets are arranged on the rotor, the magnetization direction is horizontally magnetized along the motion direction of the rotor, and the magnetization directions of two adjacent permanent magnets in the rotor are opposite, as shown in fig. 3, so that the magnetic flux polymerization effect is realized, and the high performance of the ferrite magnet motor is further realized.
The non-permanent magnet part of the rotor is formed by laminating silicon steel sheets, the rotor part as long as the stator is a rotor unit, and the number of the split teeth of each unilateral stator is NSAnd the number of pole pairs of the outer stator winding is P, the number of the permanent magnets on one rotor unit is PPM＝NSP; the distribution of the permanent magnets is shown in fig. 2, and the magnetization direction is shown by the direction of the arrow on the permanent magnet in fig. 3.
The permanent magnet selected by the motor of the utility model is low-cost ferrite, but is not limited to the low-cost ferrite, and other permanent magnets can be selected;
the design of the stator windings demonstrates that the maximum induced electromotive force vector can be achieved, thereby improving power density and efficiency. This is due to the fact that adjacent winding coils within a phase are designed to be opposite in polarity, and considering the horizontally alternating magnetization direction in the permanent magnet, the induced electromotive force of each winding coil will follow the same direction, thereby generating the maximum induced electromotive force vector.
To sum up, the double-stator split-tooth cylindrical linear motor comprises an inner stator, a rotor and an outer stator, and has the following characteristics that the double-stator adopts a split-tooth structure and a double-stator dislocation technology, so that the effect of magnetic flux alternating polymerization is realized, the output thrust of the motor is improved, and simultaneously, the magnetic resistance generated by two air gap magnetic fields is mutually inhibited, so that the electromagnetic thrust fluctuation is effectively inhibited; the rotor adopts a structure with a magnetic flux aggregation effect, namely ferrite permanent magnets are horizontally magnetized along the moving direction of the rotor, and the magnetization directions of two adjacent permanent magnets in the rotor are opposite, so that the magnetic flux aggregation effect is realized; the outer stator is provided with concentrated winding windings, the purpose is to improve the winding coefficient, reduce end winding and improve the motor efficiency, and each phase of winding adopts a modular design to improve the fault-tolerant capability of the motor. The utility model discloses a tooth-like cylindrical linear electric motor is split to double stator has that magnetic resistance and thrust are undulant low, and power density is high, advantages such as working property is good.
Example two:
it is an object of this embodiment to provide a drive/power mechanism.
A kind of actuating mechanism, adopt a kind of above-mentioned double stator to split the cylindrical linear electric motor of tooth type, the said linear electric motor includes: the single-side stator comprises an inner stator and an outer stator, the rotor is of a magnetic-gathering permanent magnet structure, the permanent magnets are horizontally magnetized along the moving direction of the rotor, and the magnetizing directions of the two adjacent permanent magnets are opposite;
the stator comprises an outer stator, an inner stator and a rotor, wherein the outer stator and the inner stator are respectively provided with 3 split teeth, the outer stator is internally provided with a phase group concentrated coil winding, the inner stator is not provided with a winding, the two stators are respectively provided with a certain air gap distance from the rotor, the two air gap distances are equal, and the two stators have an offset of the width of the main stator teeth along the moving direction of the rotor;
the mover adopts a mover structure with a magnetic flux polymerization effect, namely, the ferrite permanent magnets are horizontally magnetized along the moving direction of the mover, and the magnetization directions of two adjacent permanent magnets in the mover are opposite.
The double-stator split-tooth cylindrical linear motor and the driving mechanism can be realized, and have wide application prospects.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A double-stator split-tooth cylindrical linear motor is characterized by comprising a rotor and two unilateral stators which are arranged on two sides of the rotor in a face-to-face mode, wherein each unilateral stator comprises an inner stator and an outer stator;
the stator comprises an inner stator, an outer stator and a rotor, wherein the inner stator and the outer stator are respectively provided with 3 split teeth, the outer stator is internally provided with a phase group concentrated coil winding, the inner stator is not provided with a winding, the two stators are respectively provided with a certain air gap distance from the rotor, the two air gap distances are equal, and the two stators have an offset of the width of the main stator teeth along the moving direction of the rotor;
the mover adopts a mover structure with a magnetic flux polymerization effect, namely, the ferrite permanent magnet is horizontally magnetized along the moving direction of the mover.
2. The double stator split tooth cylindrical linear motor according to claim 1, wherein the tail end of the main stator tooth is split into 3 split teeth with the same width; the outer stator is provided with windings, the winding mode is a concentrated winding mode, and each phase of windings adopt a modular design; the stator is based on the structural design of a stator phase group concentrated coil winding, and the double-stator dislocation technology is adopted to realize the alternating polymerization of magnetic flux; and simultaneously, the magnetic resistance forces generated by the two air gap magnetic fields mutually inhibit.
3. The double stator split tooth cylindrical linear motor of claim 1, wherein both stators are laminated with silicon steel sheets, wherein the outer stator is provided with armature windings but no permanent magnets, and the inner stator is provided with neither armature windings nor permanent magnets.
4. A double stator split tooth cylindrical linear motor as claimed in claim 1, wherein the slot width is the same as the main stator tooth width in the same phase of the stator, and the slot width between two different phases is larger than the slot width in the same phase.
5. A double stator split tooth cylindrical linear motor as claimed in claim 4, wherein the ratio of the slot width within the same phase of the stator to the slot width between different phases is 3/5.
6. The double-stator split-tooth cylindrical linear motor according to claim 1, wherein three-phase windings of the outer stator are in a three-phase symmetrical distribution mode, and the electrical angle of phase difference between two adjacent phases is 4 pi/3.
7. A double stator split tooth cylindrical linear motor as claimed in claim 1 wherein each stator has an extension of the width of the main stator teeth at each end.
8. A double stator split tooth cylindrical linear motor as claimed in claim 1, wherein adjacent winding coils in the same phase of said outer stator are opposite in polarity and the induced electromotive force of each winding coil will follow the same direction.
9. The double-stator split-tooth cylindrical linear motor according to claim 1, wherein the rotor is formed by connecting a plurality of rotor units with the same structure in series.
10. A drive mechanism comprising a double stator split tooth cylindrical linear motor as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022983739.2U CN213547339U (en) | 2020-12-10 | 2020-12-10 | Double-stator split-tooth type cylindrical linear motor and driving mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022983739.2U CN213547339U (en) | 2020-12-10 | 2020-12-10 | Double-stator split-tooth type cylindrical linear motor and driving mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213547339U true CN213547339U (en) | 2021-06-25 |
Family
ID=76486303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022983739.2U Active CN213547339U (en) | 2020-12-10 | 2020-12-10 | Double-stator split-tooth type cylindrical linear motor and driving mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213547339U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688524A (en) * | 2020-12-10 | 2021-04-20 | 山东大学 | Double-stator split-tooth type cylindrical linear motor |
-
2020
- 2020-12-10 CN CN202022983739.2U patent/CN213547339U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112688524A (en) * | 2020-12-10 | 2021-04-20 | 山东大学 | Double-stator split-tooth type cylindrical linear motor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110165852B (en) | Double-stator phase group concentrated winding and magnetism gathering type permanent magnet linear motor | |
| CN104167896B (en) | A kind of T-shaped magnetic flux switching permanent-magnetism linear motor and module thereof | |
| CN106992655B (en) | A kind of magnetic field modulation permanent-magnetism linear motor and its optimum design method improving winding utilization | |
| CN104811011A (en) | Cylindrical type transverse magnetic-field permanent-magnet flux-switching linear motor | |
| CN102832771A (en) | Combined-type flux switching permanent magnet motor | |
| CN107070165B (en) | A kind of flux-reversal type permanent-magnetism linear motor and its application | |
| CN110572003A (en) | A primary halbach permanent magnet linear motor | |
| CN117559679A (en) | Magnetic flux switching permanent magnet motor with stator slot permanent magnet and speed regulation system | |
| CN112054643A (en) | Stator-yoke-free interphase coupling type axial flux reluctance motor | |
| CN118074369B (en) | A high torque density magnetic field modulation fault-tolerant permanent magnet direct drive cutting motor for tunneling robots | |
| CN106981968A (en) | The continuous pole dual-side flat plate type permanent-magnetism linear motor of independent winding | |
| CN110690807B (en) | A cylindrical primary permanent magnet transverse flux linear motor | |
| CN114844311B (en) | A Z-shaped rotor-tooth double-stator axial magnetic field flux switching permanent magnet motor | |
| CN102082490A (en) | High-thrust permanent magnet direct drive linear electric motor | |
| CN110138173B (en) | A modular high thrust density switched reluctance linear motor | |
| CN213547339U (en) | Double-stator split-tooth type cylindrical linear motor and driving mechanism | |
| CN108880182B (en) | Split-tooth modular vernier permanent magnet linear motor | |
| CN111313576A (en) | Modularized permanent magnet motor | |
| CN210053325U (en) | Double-stator phase group concentrated winding and magnetism gathering type permanent magnet linear motor and driving mechanism | |
| CN203632520U (en) | Permanent-magnetic linear motor with yoke-free secondary and double-side primary | |
| CN104935148A (en) | A magnetic flux reversal permanent magnet linear motor and a motor module composed of it | |
| CN118300355B (en) | Double-stator magnetic field modulation permanent magnet motor with tangential excitation of stator notch | |
| CN112688524A (en) | Double-stator split-tooth type cylindrical linear motor | |
| CN119070518A (en) | A double-sided stator linear motor with leakage flux utilization based on segmented alternating-pole mover | |
| CN115765377A (en) | Primary yoke-free bilateral secondary alternating pole permanent magnet linear motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |