CN117040226A - Electromagnetic actuator with high power density - Google Patents
Electromagnetic actuator with high power density Download PDFInfo
- Publication number
- CN117040226A CN117040226A CN202210476991.5A CN202210476991A CN117040226A CN 117040226 A CN117040226 A CN 117040226A CN 202210476991 A CN202210476991 A CN 202210476991A CN 117040226 A CN117040226 A CN 117040226A
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- Prior art keywords
- shaft
- power density
- high power
- electromagnetic actuator
- magnetizer
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 14
- 239000010439 graphite Substances 0.000 claims abstract description 14
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
-
- 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
- H02K1/34—Reciprocating, oscillating or vibrating parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses an electromagnetic actuator with high power density, which comprises a shell, wherein the bottom of the shell is connected with a fixed plate, the outer wall of the shell is connected with a wiring plug seat, the top center of the shell is connected with a shaft, the upper part of the outer wall of the shaft is connected with an upper pressing plate, the lower part of the outer wall of the shaft is connected with a coil framework, a winding coil is wound on the coil framework, the upper part of the outer part of the shaft is connected with the upper pressing plate, the outer part of the shaft is sleeved with a sleeve, a mechanical spring is arranged between the sleeve and a spring clamping groove, the inner side wall of the shell is connected with an annular magnetizer, the inner side of the annular magnetizer is provided with a permanent magnet, the top of the annular magnetizer is provided with an L-shaped magnetizer, the inner side of the sleeve is provided with a graphite copper sleeve bearing, and the bottom of the graphite copper sleeve bearing is connected with a limit nut; the invention has reasonable structural design, can meet the requirement of long-term work of the actuator, is beneficial to improving the magnetic energy utilization rate, and can meet the requirement of high power density.
Description
Technical Field
The invention relates to the technical field of vibration and noise control, in particular to an electromagnetic actuator with high power density.
Background
Along with the higher and higher control requirements on harmful vibration, the traditional passive vibration isolation or absorption has better control effect on high-frequency vibration, but can not effectively solve the problem of low-frequency vibration or vibration with larger frequency variation.
The vibration active control technology has the advantages of strong self-adaptive capacity, wide controllable frequency domain and the like, and becomes a research hot spot in the field of vibration control. The actuator is an extremely important ring in active control as an executing element, and the electromagnetic actuator is widely applied due to high efficiency and accuracy in control, quick system response and the like.
The existing electromagnetic actuator is often not compact in internal structure design, so that the problems of oversized size, overweight weight and small output are often caused, and the sheet spring adopted by the existing actuator has the problems of low fatigue life and uncontrollable radial deformation and cannot be transversely installed; the manufacturing cost is high due to the complex structure, and the reliability cannot meet the requirement, so that the application of the actual engineering actuator always has a problem. To this end, we propose an electromagnetic actuator with high power density.
Disclosure of Invention
The invention aims to provide an electromagnetic actuator which has the advantages of simple and compact structure, large magnetic force coefficient, large power density, high reliability and high economy, and solves the technical problems in the prior art.
In order to achieve the technical purpose and achieve the technical effect, the invention provides the following technical scheme:
the electromagnetic actuator with high power density comprises a shell, wherein the bottom of the shell is connected with a fixed plate, the outer wall of the shell is connected with a wiring plug seat, and the center of the top of the shell is connected with a shaft;
the upper part of the outer wall of the shaft is connected with an upper pressing plate, the lower part of the outer wall of the shaft is connected with a coil framework, a winding coil is wound on the coil framework, the upper part of the outer part of the shaft is connected with the upper pressing plate, spring clamping grooves are formed in the bottom of the upper pressing plate and the top of the coil framework, a sleeve is sleeved on the outer part of the shaft, and a mechanical spring is arranged between the sleeve and the spring clamping grooves;
the inner side wall of the shell is connected with an annular magnetizer, a permanent magnet is arranged on the inner side of the annular magnetizer, an L-shaped magnetizer is arranged on the top of the annular magnetizer, and a retainer ring is abutted between the annular magnetizer and the L-shaped magnetizer;
the inner side of the sleeve is provided with a graphite copper sleeve bearing, the bottom of the graphite copper sleeve bearing is connected with a limit nut, the inner side of the lower end of the sleeve is provided with an internal thread, and the outer side of the limit nut is provided with an external thread connected with the sleeve.
Preferably, in the electromagnetic actuator with high power density, the outer shaft is guided by a graphite copper sleeve bearing.
Preferably, in the electromagnetic actuator with high power density, the mechanical spring is arranged inside an assembly formed by the annular magnetizer and the permanent magnet.
Preferably, in the electromagnetic actuator with high power density, the annular magnetizer and the permanent magnet are supported by an upper mechanical spring and a lower mechanical spring.
Preferably, in the electromagnetic actuator with high power density, the upper end and the lower end of the shaft are both provided with a concave table and external threads.
Preferably, in an electromagnetic actuator with high power density, the outer end of the sleeve is provided with a boss, and four evenly distributed threaded holes are formed in the boss.
Preferably, in the electromagnetic actuator with high power density, a boss connected with a sleeve is arranged on the inner side of the L-shaped magnetizer, and a large chamfer angle of 15-30 degrees is arranged at the corner of the outer side of the upper end of the L-shaped magnetizer.
Preferably, in the electromagnetic actuator with high power density, a small boss is arranged at the lower end of the annular magnetizer, and the permanent magnet is adhered to the inner side of the annular magnetizer.
Preferably, in the electromagnetic actuator with high power density, a counter bore matched with the shaft is arranged in the center of the lower end of the coil framework, and a through hole is formed in the right side of the lower end of the coil framework.
Preferably, in the electromagnetic actuator with high power density, a threaded hole connected with the shaft is formed in the middle of the upper pressing plate.
Preferably, in the electromagnetic actuator with high power density, a threaded hole connected with the shaft is formed in the middle of the fixed plate, and a slot hole with two ends penetrating through the fixed plate is formed in the right part of the fixed plate.
Preferably, in the electromagnetic actuator with high power density, a through plug hole is formed in the middle of the wiring plug seat, and threaded holes are formed in the front and the rear of the wiring plug seat and around the plug hole.
Compared with the prior art, the invention has the beneficial effects that:
1. the guide piece formed by the graphite copper sleeve bearing, the sleeve and the limit nut has high reliability and good durability, can be transversely installed, and can meet the requirement of long-term operation of the actuator;
2. the invention has reasonable structural design, adopts the spiral mechanical spring to replace the sheet spring, improves the fatigue life of the actuator, and can meet the requirement of long-term work of the actuator;
3. the magnetic circuit constructed by the annular magnetizer and the L-shaped magnetizer is shorter, so that the winding coil is fully built in the magnetic field, the magnetic force coefficient is large, and the magnetic energy utilization rate is improved;
4. the electromagnetic actuator rotor consists of the guide piece and the magnetic circuit part, has compact structure, greatly reduces the volume of the actuator, can still have larger output force, and can meet the requirement of high power density;
5. the electromagnetic actuator has simple and reasonable structural design, is convenient to assemble, and is easy to determine experimental parameters and check and maintain in practical application because the whole rotor is exposed outside after the shell is removed;
6. the electromagnetic actuator is provided with the larger fixing plate, so that the electromagnetic actuator is more reliably connected and fixed with a controlled object, and the safety of the actuator during operation is improved;
7. the electromagnetic actuator is not provided with the outer cylinder structure to arrange a circuit for applying excitation, so that the mass of non-active components of the actuator is reduced to a certain extent, the actuator is lighter and the processing cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the description of the specific embodiments will be briefly described below, it being obvious that the drawings in the following description are only some examples of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a front cross-sectional view of a high power density electromagnetic actuator of the present invention;
FIG. 2 is an external block diagram of the high power density electromagnetic actuator of the present invention;
in the figure: 1. a shaft; 2. a graphite copper sleeve bearing; 3. a sleeve; 4. a limit nut; 5. an L-shaped magnetizer; 6. an annular magnetizer; 7. a retainer ring; 8. a permanent magnet; 9. a coil bobbin; 10. an upper press plate; 11. a mechanical spring; 12. a fixing plate; 13. a housing; 14. a wiring plug seat; 15. winding coils.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, the present embodiment is an electromagnetic actuator with high power density, which includes a housing 13, a fixed plate 12 is connected to the bottom of the housing 13, so that the overall structure is stable, a wiring plug seat 14 is connected to the outer wall of the housing 13 for connecting to a power supply, and a shaft 1 is connected to the top center of the housing 13; the upper part of the outer wall of the shaft 1 is connected with an upper pressing plate 10, the lower part of the outer wall of the shaft 1 is connected with a coil framework 9, a winding coil 15 is wound on the coil framework 9, the upper part of the outer part of the shaft 1 is connected with the upper pressing plate 10, spring clamping grooves are formed in the bottom of the upper pressing plate 10 and the top of the coil framework 9, a sleeve 3 is sleeved on the outer part of the shaft 1, a mechanical spring 11 is arranged between the sleeve 3 and the spring clamping grooves, and internal restoring force can be provided; the inner side wall of the shell 13 is connected with an annular magnetizer 6, a permanent magnet 8 is arranged on the inner side of the annular magnetizer 6, an L-shaped magnetizer 5 is arranged on the top of the annular magnetizer 6, so that a magnetic circuit of the actuator is built, a retainer ring 7 is abutted between the annular magnetizer 6 and the L-shaped magnetizer 5, and the position of a part is ensured to be fastened; the inside of sleeve 3 is equipped with graphite copper sheathing bearing 2, and the bottom of graphite copper sheathing bearing 2 is connected with stop nut 4, and the lower extreme inboard of sleeve 3 is equipped with the internal thread, and the stop nut 4 outside is equipped with the external screw thread of being connected with sleeve 3 to constitute the guide cover on axle 1.
The shaft 1 is guided by a graphite copper sleeve bearing 2, and a mechanical spring 11 is arranged inside an assembly formed by the annular magnetizer 6 and the permanent magnet 8, and the annular magnetizer 6 and the permanent magnet 8 are supported by an upper mechanical spring 11 and a lower mechanical spring 11.
The upper and lower ends of the shaft 1 are provided with concave stations and external threads.
The outer end of the sleeve 3 is provided with a boss, and four evenly distributed threaded holes are formed in the boss.
The inner side of the magnetizer 5 is provided with a boss connected with the sleeve 3, the corner of the outer side of the upper end of the L-shaped magnetizer 5 is provided with a large chamfer angle of 15-30 degrees, and the position of the alignment permanent magnet 8 is subjected to protruding design.
The lower end of the annular magnetizer 6 is provided with a small boss which can be connected with the L-shaped magnetizer 5 to form an integral magnetic circuit, the permanent magnet 8 is adhered to the inner side of the annular magnetizer 6, and the annular magnetizer 6 is positioned and fixed by the small boss at the lower end of the annular magnetizer 6.
The center of the lower end of the coil framework 9 is provided with a counter bore matched with the shaft 1, so that the shaft 1 is convenient to install, and the right side of the lower end of the coil framework 9 is provided with a through hole for passing through a lead.
The middle part of the upper pressing plate 10 is provided with a threaded hole connected with the shaft 1, the middle part of the fixed plate 12 is provided with a threaded hole connected with the shaft 1, so that the fixed plate is convenient to connect with the shaft 1, the right part of the fixed plate 12 is provided with a slotted hole with two ends penetrating through the fixed plate 12, and the fixed plate is convenient to be matched with the shell 13 to connect to form a whole.
The middle part of the wiring plug seat 14 is provided with a through plug hole, and the front and the back of the wiring plug seat 14 and the periphery of the plug hole are respectively provided with a threaded hole, so that the wiring plug seat is easy to install and fix.
The specific implementation manner of the embodiment is as follows:
in the embodiment, a graphite copper sleeve bearing 2 is embedded in a sleeve 3, an inner thread is arranged on the inner side of the lower end of the sleeve 3 and is fixed through a limit nut 4 to form a guide piece, and the guide piece is integrally sleeved on a shaft 1 to play a guiding role; the permanent magnet 8 is adhered to the inner side of the annular magnetizer 6, the annular magnetizer 6 and the L-shaped magnetizer 5 are fixedly connected through screws to form a magnetic circuit part of the actuator by fixing the boss at the lower end of the annular magnetizer 6 and the retainer ring 7 arranged above the permanent magnet 8, an air gap is formed between the permanent magnet 8 and the L-shaped magnetizer 5, a constant magnetic field is provided by the permanent magnet 8, bosses are arranged on the sleeve 3 and the L-shaped magnetizer, a guide piece and the magnetic circuit part are combined to form a rotor through the corresponding bosses through the screw connection, a through hole is formed in the middle of the coil framework 9 and sleeved at the lower end of the shaft 1, a winding coil 15 is wound, the winding coil 15 is positioned in the air gap magnetic field, and a through hole through a wire is formed in one side of the coil framework 9; the upper pressing plate 10 and the coil skeleton 9 are provided with grooves for installing and limiting the positions of the springs, and the mechanical springs 11 are pressed between the bosses of the sleeve 3 and the L-shaped magnetizer 5 and the upper grooves and the lower grooves; the middle of the fixed plate 12 is provided with a threaded hole which is fixedly connected with the lower end of the shaft 1, the lower side of the fixed plate 12 is provided with a slotted hole for wiring, and the fixed plate is provided with a large through hole for connecting a controlled object; the shell 13 and the fixed plate 12 are connected through screws to form an actuator shell; the wiring plug seat 14 is arranged at a position close to the wiring slot hole of the fixed plate 12 and is respectively connected with the fixed plate 12 and the shell 13 through screws;
in order to reduce friction between the guide piece and the shaft, the diameter of a through hole at the upper end of the sleeve 3 is equal to that of an inner hole of the limit nut 4, and in order to ensure large output force of the actuator, a sufficient distance is reserved between the rotor and the fixing piece;
the power supply excitation is applied to the winding coil 15 through the wiring plug seat 14, the coil framework 9 receives corresponding electromagnetic force when the power-on lead is stressed in a magnetic field, and the coil framework 9 and the fixed plate 12 are rigidly connected with a controlled object through bolts to form a fixed piece, so that the permanent magnet 8 for providing the magnetic field receives electromagnetic force with opposite properties, the rotor comprises the permanent magnet 8 and is elastically restrained by the mechanical spring 11, the rotor moves along the shaft under the action of electromagnetic force, the direction of the force is correspondingly changed along with the change of current, and the rotor also moves along with the direction of the force to generate corresponding inertia force and is applied to the controlled object through the fixed plate 12 to perform vibration control with corresponding frequency, so that the purposes of vibration reduction and noise reduction are achieved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (12)
1. An electromagnetic actuator of high power density comprising a housing (13), characterized in that: the bottom of the shell (13) is connected with a fixed plate (12), the outer wall of the shell (13) is connected with a wiring plug seat (14), and the top center of the shell (13) is connected with a shaft (1);
the upper part of the outer wall of the shaft (1) is connected with an upper pressing plate (10), the lower part of the outer wall of the shaft (1) is connected with a coil framework (9), a winding coil (15) is wound on the coil framework (9), the upper part of the outer part of the shaft (1) is connected with the upper pressing plate (10), spring clamping grooves are formed in the bottom of the upper pressing plate (10) and the top of the coil framework (9), a sleeve (3) is sleeved on the outer part of the shaft (1), and a mechanical spring (11) is arranged between the sleeve (3) and the spring clamping grooves;
the inner side wall of the shell (13) is connected with an annular magnetizer (6), a permanent magnet (8) is arranged on the inner side of the annular magnetizer (6), an L-shaped magnetizer (5) is arranged at the top of the annular magnetizer (6), and a retainer ring (7) is abutted between the annular magnetizer (6) and the L-shaped magnetizer (5);
the inner side of the sleeve (3) is provided with a graphite copper sleeve bearing (2), the bottom of the graphite copper sleeve bearing (2) is connected with a limit nut (4), the inner side of the lower end of the sleeve (3) is provided with an internal thread, and the outer side of the limit nut (4) is provided with an external thread connected with the sleeve (3).
2. The high power density electromagnetic actuator of claim 1, wherein: the shaft (1) is guided by a graphite copper sleeve bearing (2).
3. The high power density electromagnetic actuator of claim 1, wherein: the mechanical spring (11) is arranged inside an assembly formed by the annular magnetizer (6) and the permanent magnet (8).
4. The high power density electromagnetic actuator of claim 1, wherein: the annular magnetizer (6) and the permanent magnet (8) are supported by an upper mechanical spring (11) and a lower mechanical spring (11).
5. The high power density electromagnetic actuator of claim 1, wherein: the upper end and the lower end of the shaft (1) are respectively provided with a concave table and external threads.
6. The high power density electromagnetic actuator of claim 1, wherein: the outer end of the sleeve (3) is provided with a boss, and four evenly distributed threaded holes are formed in the boss.
7. The high power density electromagnetic actuator of claim 1, wherein: the inner side of the L-shaped magnetizer (5) is provided with a boss connected with the sleeve (3), and the corner of the outer side of the upper end of the L-shaped magnetizer (5) is provided with a large chamfer angle of 15-30 degrees.
8. The high power density electromagnetic actuator of claim 1, wherein: the lower end of the annular magnetizer (6) is provided with a small boss, and the permanent magnet (8) is adhered to the inner side of the annular magnetizer (6).
9. The high power density electromagnetic actuator of claim 1, wherein: the center of the lower end of the coil framework (9) is provided with a counter bore matched with the shaft (1), and the right side of the lower end of the coil framework (9) is provided with a through hole.
10. The high power density electromagnetic actuator of claim 1, wherein: the middle part of the upper pressing plate (10) is provided with a threaded hole connected with the shaft (1).
11. The high power density electromagnetic actuator of claim 1, wherein: the middle part of the fixed plate (12) is provided with a threaded hole connected with the shaft (1), and the right part of the fixed plate (12) is provided with a slotted hole with two ends penetrating through the fixed plate (12).
12. The high power density electromagnetic actuator of claim 1, wherein: the middle part of the wiring plug seat (14) is provided with a through plug hole, and screw holes are arranged in the front and the back of the wiring plug seat (14) and around the plug hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476991.5A CN117040226A (en) | 2022-05-01 | 2022-05-01 | Electromagnetic actuator with high power density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210476991.5A CN117040226A (en) | 2022-05-01 | 2022-05-01 | Electromagnetic actuator with high power density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117040226A true CN117040226A (en) | 2023-11-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210476991.5A Pending CN117040226A (en) | 2022-05-01 | 2022-05-01 | Electromagnetic actuator with high power density |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117040226A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115473404A (en) * | 2022-09-02 | 2022-12-13 | 哈尔滨工程大学 | Novel electromagnetic actuator |
-
2022
- 2022-05-01 CN CN202210476991.5A patent/CN117040226A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115473404A (en) * | 2022-09-02 | 2022-12-13 | 哈尔滨工程大学 | Novel electromagnetic actuator |
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