CN107976292B - Efficient magnetic circuit structure applied to vibration generating equipment and vibration generating equipment - Google Patents
Efficient magnetic circuit structure applied to vibration generating equipment and vibration generating equipment Download PDFInfo
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- CN107976292B CN107976292B CN201711404095.3A CN201711404095A CN107976292B CN 107976292 B CN107976292 B CN 107976292B CN 201711404095 A CN201711404095 A CN 201711404095A CN 107976292 B CN107976292 B CN 107976292B
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- magnetic
- cylinder
- magnetic cylinder
- permanent magnet
- vibration generating
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- 230000005389 magnetism Effects 0.000 claims description 5
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000009434 installation Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 1
- 230000005426 magnetic field effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/02—Vibration-testing by means of a shake table
- G01M7/022—Vibration control arrangements, e.g. for generating random vibrations
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention discloses a high-efficiency magnetic circuit structure applied to vibration generating equipment, which comprises a magnetic cylinder and a central magnetic pole, wherein a magnetic gap is formed between the magnetic cylinder and the central magnetic pole; the magnetic circuit structure further comprises a permanent magnet arranged in the magnetic cylinder, the permanent magnet is matched with the magnetic cylinder to form a magnetic loop, and the magnetic gap is intersected with the magnetic loop. The invention also discloses vibration generating equipment comprising the efficient magnetic circuit structure. Compared with the traditional magnetic circuit with the same size, the magnetic density of the high-efficiency magnetic circuit structure is improved by 1/3, that is, the magnetic circuit of the vibration test system with the same specification can be made smaller.
Description
Technical Field
The invention relates to the technical field of vibration test equipment, in particular to a high-efficiency magnetic circuit structure applied to vibration generation equipment and the vibration generation equipment.
Background
Vibration testing devices are devices that are used to generate vibratory forces and apply such vibratory forces to other structures and devices. Common vibration test equipment includes an electric vibration table, an electromagnetic vibration table, an electric vibration exciter, an electromagnetic vibration exciter and the like.
Taking an electric vibration exciter as an example, when the electric vibration exciter works, the coil which is electrified with alternating current is stressed in a magnetic field to generate exciting force. The general electric vibration exciter is characterized in that a permanent magnet generates a constant magnetic field, a movable coil is supported in the constant magnetic field through an arch spring, and a push rod and the movable coil are fixed together to form a movable part of the vibration exciter. When alternating current flows through the moving coil, the movable part generates alternating exciting force, and the exciting force is transmitted to the test member through the ejector rod.
The magnetic circuit structure of the conventional vibration test equipment generally comprises a magnetic cylinder and a central magnetic pole, wherein the central magnetic pole is positioned in the magnetic cylinder, a magnetic gap is formed between the magnetic cylinder and the central magnetic pole, driving coils of a moving coil assembly are distributed in the magnetic gap, and when alternating current is introduced into the driving coils, the driving coils can drive a moving coil framework to reciprocate up and down under the action of a magnetic field in the magnetic gap.
However, in the magnetic circuit structure in the prior art, the magnetic density is smaller, so that the magnetic circuit structure needs to be made large.
Disclosure of Invention
The invention aims to provide a vibrating table with an efficient magnetic circuit, and compared with a traditional magnetic circuit with the same size, the vibrating table with the efficient magnetic circuit has the advantages that the magnetic density is improved by 1/3, that is, the magnetic circuit of a vibration test system with the same specification can be made smaller.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the embodiment of the invention provides a high-efficiency magnetic circuit structure applied to vibration generating equipment, which comprises a magnetic cylinder and a central magnetic pole, wherein a magnetic gap is formed between the magnetic cylinder and the central magnetic pole, the high-efficiency magnetic circuit structure further comprises a permanent magnet arranged in the magnetic cylinder, the permanent magnet is matched with the magnetic cylinder to form a magnetic loop, and the magnetic gap is intersected with the magnetic loop.
Further, the permanent magnet is an annular permanent magnet.
Further, the permanent magnet is coaxially arranged with the magnetic gap.
Further, an annular mounting groove is formed in the magnetic cylinder, and the permanent magnet is mounted in the mounting groove.
Further, the annular mounting groove, the magnetic cylinder and the permanent magnet are coaxially arranged.
Further, the magnetic cylinder comprises an inner magnetic cylinder and an outer magnetic cylinder arranged around the inner magnetic cylinder, and the permanent magnet is arranged between the outer magnetic cylinder and the inner magnetic cylinder.
Further, the magnetic isolation device is arranged between the inner magnetic cylinder and the outer magnetic cylinder, and separates the inner magnetic cylinder and the outer magnetic cylinder into two independent components so as to ensure that the magnetic loop smoothly acts on the driving coil of the vibration generating device. Further, the vibration generating device comprises an electric vibration table, an electromagnetic vibration table, an electric vibration exciter or an electromagnetic vibration exciter. The embodiment of the invention also provides vibration generating equipment, which comprises a table body and a moving coil, wherein the high-efficiency magnetic circuit structure is arranged in the table body, and a driving coil on the moving coil can reciprocate in a magnetic gap along the axial direction of the table body.
Further, the vibration generating device comprises an electric vibration table, an electromagnetic vibration table, an electric vibration exciter or an electromagnetic vibration exciter. Compared with the prior art, the invention has the advantages that:
1. the magnetic density can be effectively increased;
2. the installation is convenient, and the safety problem of the installation of the large-size permanent magnet is avoided;
3. the feasibility of using the permanent magnet for the high-thrust vibrating table is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a top view of a magnetic circuit of a vibrating table in accordance with an embodiment of the present invention;
fig. 2 shows a cross-sectional view in the direction A-A of fig. 1.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. 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.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1 and 2, an electric vibration table with an efficient magnetic circuit structure according to this embodiment includes a table body and a moving coil, in which a magnetic circuit structure 1 is installed in the table body, the magnetic circuit structure 1 includes a magnetic cylinder and a central magnetic pole 105, a magnetic gap 101 is formed between the magnetic cylinder and the central magnetic pole 105, the moving coil includes a moving coil frame and a driving coil 2 installed on the moving coil frame, and the driving coil 2 can move up and down in the magnetic gap 101.
As a modification of the present embodiment, a permanent magnet 3 embedded in the magnetic cylinder is further included, and the permanent magnet 3 cooperates with the magnetic cylinder to form a magnetic loop 4 acting on the driving coil.
In this technical scheme, magnetic loop 4 is used for providing magnetic field for driving coil 2 in magnetic gap 101, when supplying alternating current in driving coil 2, driving coil can drive the reciprocating motion of moving coil skeleton about owing to the magnetic field effect in this magnetic gap.
In one embodiment, the magnetic cylinders include an inner magnetic cylinder 102, an outer magnetic cylinder 103 surrounding the inner magnetic cylinder 102.
In this embodiment, the magnetic cylinder is annular in shape as a whole, and an annular mounting groove is formed in the middle of the magnetic cylinder, and the permanent magnet 3 is mounted in the annular mounting groove. The outer magnet cylinder 103 and the inner magnet cylinder 102 may be coaxially arranged.
In other embodiments, the outer magnet cylinder 103 is a separate component from the inner magnet cylinder 102.
In another embodiment, the outer magnetic cylinder 103 may also have a rectangular axial cross-section or other shaped cross-section.
Further, the bottom of the inner magnetic cylinder 102 is provided with a magnetism isolating device 5, and the magnetism isolating device 5 separates the inner magnetic cylinder and the outer magnetic cylinder into two independent components, and the magnetism isolating device is made of non-metal materials, such as rubber, so that the magnetic loop can be ensured to act on the driving coil smoothly.
According to the embodiment of the invention, the permanent magnet is embedded in the magnetic cylinder of the electric vibration table, the magnetic loop 4 is formed between the permanent magnet and the magnetic cylinder, and compared with a traditional magnetic circuit without the permanent magnet, the magnetic density of the magnetic loop is improved by 1/3, that is, the magnetic loop of the vibration test system with the same specification can be made smaller.
In addition, the high-efficiency magnetic circuit structure is also suitable for vibration generating equipment such as an electromagnetic vibration table, an electric vibration exciter or an electromagnetic vibration exciter.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (4)
1. The utility model provides a be applied to high-efficient magnetic circuit structure of vibration generating equipment, includes magnetic cylinder and center magnetic pole, be formed with the magnetic gap between magnetic cylinder and the center magnetic pole, its characterized in that, magnetic circuit still including install in the permanent magnet in the magnetic cylinder, the permanent magnet forms the magnetic loop with the magnetic cylinder cooperation, the magnetic gap with the intersection of magnetic loop, the permanent magnet is annular permanent magnet, permanent magnet and magnetic gap coaxial arrangement, be equipped with annular mounting groove on the magnetic cylinder, the permanent magnet install in the mounting groove, annular mounting groove and magnetic cylinder, the equal coaxial arrangement of permanent magnet, the magnetic cylinder includes interior magnetic cylinder, and centers on the outer magnetic cylinder that interior magnetic cylinder set up, the permanent magnet sets up between outer magnetic cylinder and interior magnetic cylinder.
2. The efficient magnetic circuit structure for vibration generating equipment according to claim 1, further comprising a magnetism isolating device disposed between the inner magnetic cylinder and the outer magnetic cylinder, the magnetism isolating device separating the inner magnetic cylinder and the outer magnetic cylinder into two independent components to ensure that the magnetic loop smoothly acts on the driving coil of the vibration generating equipment.
3. The efficient magnetic circuit structure applied to vibration generating equipment according to claim 1, wherein the vibration generating equipment comprises an electric vibration table, an electromagnetic vibration table, an electric vibration exciter or an electromagnetic vibration exciter.
4. A vibration generating device comprising a table body and a moving coil, wherein the high-efficiency magnetic circuit structure as claimed in any one of claims 1 to 3 is installed in the table body, and a driving coil on the moving coil can reciprocate in a magnetic gap along the axial direction of the table body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711404095.3A CN107976292B (en) | 2017-12-22 | 2017-12-22 | Efficient magnetic circuit structure applied to vibration generating equipment and vibration generating equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711404095.3A CN107976292B (en) | 2017-12-22 | 2017-12-22 | Efficient magnetic circuit structure applied to vibration generating equipment and vibration generating equipment |
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| Publication Number | Publication Date |
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| CN107976292A CN107976292A (en) | 2018-05-01 |
| CN107976292B true CN107976292B (en) | 2024-03-29 |
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| CN201711404095.3A Active CN107976292B (en) | 2017-12-22 | 2017-12-22 | Efficient magnetic circuit structure applied to vibration generating equipment and vibration generating equipment |
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08193911A (en) * | 1995-01-11 | 1996-07-30 | Akashi:Kk | Electrokinetic vibration test machine |
| US5604816A (en) * | 1991-07-25 | 1997-02-18 | Kabushiki Kaisha Nippon Memorial | Vibrator for producing a sensible vibration |
| US5894263A (en) * | 1995-12-15 | 1999-04-13 | Matsushita Electric Industrial Co., Ltd. | Vibration generating apparatus |
| CN201110257Y (en) * | 2007-11-02 | 2008-09-03 | 华中科技大学 | Movable magnetic vibrator |
| CN101478209A (en) * | 2009-02-23 | 2009-07-08 | 苏州东菱振动试验仪器有限公司 | Electric vibration platform apparatus |
| CN201314863Y (en) * | 2008-12-01 | 2009-09-23 | 苏州苏试试验仪器有限公司 | Short circuit ring structure suitable for long-stroke electric vibration table |
| CN201749819U (en) * | 2010-08-02 | 2011-02-16 | 珠海许继电气有限公司 | Miniaturized permanent magnetic mechanism for high-voltage vacuum switchgear |
| WO2015080050A1 (en) * | 2013-11-28 | 2015-06-04 | Imv株式会社 | Static load holding device for electrodynamic vibration generator |
| CN204699907U (en) * | 2015-04-16 | 2015-10-14 | 厦门大学 | A kind of permanent magnet type exciting device |
| CN205673158U (en) * | 2016-05-23 | 2016-11-09 | 脉创测控装备科技（苏州）有限公司 | There is the modality vibration exciter of resultant field |
| CN207622966U (en) * | 2017-12-22 | 2018-07-17 | 脉创测控装备科技（苏州）有限公司 | Efficient magnetic structure and vibration occurrence of equipment applied to vibration occurrence of equipment |
-
2017
- 2017-12-22 CN CN201711404095.3A patent/CN107976292B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5604816A (en) * | 1991-07-25 | 1997-02-18 | Kabushiki Kaisha Nippon Memorial | Vibrator for producing a sensible vibration |
| JPH08193911A (en) * | 1995-01-11 | 1996-07-30 | Akashi:Kk | Electrokinetic vibration test machine |
| US5894263A (en) * | 1995-12-15 | 1999-04-13 | Matsushita Electric Industrial Co., Ltd. | Vibration generating apparatus |
| CN201110257Y (en) * | 2007-11-02 | 2008-09-03 | 华中科技大学 | Movable magnetic vibrator |
| CN201314863Y (en) * | 2008-12-01 | 2009-09-23 | 苏州苏试试验仪器有限公司 | Short circuit ring structure suitable for long-stroke electric vibration table |
| CN101478209A (en) * | 2009-02-23 | 2009-07-08 | 苏州东菱振动试验仪器有限公司 | Electric vibration platform apparatus |
| CN201749819U (en) * | 2010-08-02 | 2011-02-16 | 珠海许继电气有限公司 | Miniaturized permanent magnetic mechanism for high-voltage vacuum switchgear |
| WO2015080050A1 (en) * | 2013-11-28 | 2015-06-04 | Imv株式会社 | Static load holding device for electrodynamic vibration generator |
| CN204699907U (en) * | 2015-04-16 | 2015-10-14 | 厦门大学 | A kind of permanent magnet type exciting device |
| CN205673158U (en) * | 2016-05-23 | 2016-11-09 | 脉创测控装备科技（苏州）有限公司 | There is the modality vibration exciter of resultant field |
| CN207622966U (en) * | 2017-12-22 | 2018-07-17 | 脉创测控装备科技（苏州）有限公司 | Efficient magnetic structure and vibration occurrence of equipment applied to vibration occurrence of equipment |
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| CN107976292A (en) | 2018-05-01 |
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