CN109596863A - A kind of Helmholtz coil test measured piece stationary fixture - Google Patents
A kind of Helmholtz coil test measured piece stationary fixture Download PDFInfo
- Publication number
- CN109596863A CN109596863A CN201811465946.XA CN201811465946A CN109596863A CN 109596863 A CN109596863 A CN 109596863A CN 201811465946 A CN201811465946 A CN 201811465946A CN 109596863 A CN109596863 A CN 109596863A
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- CN
- China
- Prior art keywords
- helmholtz coil
- central shaft
- shaft rod
- measured piece
- stationary fixture
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- 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.)
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0425—Test clips, e.g. for IC's
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of Helmholtz coil test measured piece stationary fixture provided by the invention, is made of, and position of two connecting rods in the central shaft rod is adjustable a central shaft rod and two connecting rods being set in the central shaft rod；Each connecting rod by supporting block and is fixed in the supporting block radially that 3~4 telescopic struts of circumference uniform distribution form respectively, each telescopic strut lengths are identical, and the connecting rod is installed in Helmholtz coil by the active force and reaction force when by each telescopic strut end and Helmholtz coil interior side contacts；Each supporting block center offers the through-hole for passing through the central shaft rod；The groove for placing experiment test block, and central shaft rod setting coaxial with Helmholtz coil are offered at the central shaft rod center.Experiment test block rapidly and accurately can be positioned at the uniform magnetic field of Helmholtz coil middle by this fixture, and can be applied to various sizes of Helmholtz coil.
Description
Technical field
The present invention relates to Helmholtz coils to test utensil, in particular to a kind of Helmholtz coil test is solid with measured piece
Clamp tool.
Background technique
Helmholtz coil is a kind of for manufacturing the device of small range region uniform magnetic field.Helmholtz coil is by a pair
Identical to have round or square cross section conductor coils composition, two coils are parallel to each other and coaxial setting, two lines
The distance between circle is equal to coil radius, is connected with same direction current in each coil.In this way can in two hub of a spool positions,
Produce the very high magnetic field of uniformity coefficient.
Helmholtz coil is suffered from many electromagnetism research fields and is widely applied, such as generates standard Magnetic Field, the earth
The counteracting and compensation in magnetic field, earth magnetism environmental simulation, the judgement of Magnetic Shielding Effectiveness, electromagnetic interference simulated experiment, hall probe and each
The calibration of kind magnetometer, the research of biological magnetic field and research of substance magnetic characteristic etc..
Since the uniform magnetic field of Helmholtz coil is in two coil axis middles, and magnetic direction strictly parallel two
Coil axis direction.Therefore in experiment, just there is very high requirement for the space arrangement position and direction of measured piece.
Currently, common solution is one objective table of placement in coil, then on objective table by adhesive tape or
The fixed experiment measured piece of other similar method.The objective table that the prior art uses is mostly cuboid platform, is directly placed at Hai Mu
Suddenly hereby in coil.But Helmholtz coil inherently annulus shape, it is difficult to guarantee that the placement of cuboid objective table is horizontal.And
And be difficult to modify its size after often carrying out due to objective table, reusability is low, for various sizes of Helmholtz coil, just
Different size of objective table is used, it is inconvenient.In addition, the mode that this objective table is fixed, either objective table itself
Still measured piece thereon is all very unstable, can not use in the case where there is wind environment in outdoor.Moreover, when fixed experiment measured piece
If misoperation, it is also easy to cause the damage of measured piece.
Summary of the invention
The purpose of the invention is to overcome the shortcoming of prior art, a kind of Helmholtz coil test quilt is provided
Survey part stationary fixture.The geometrical construction of the fixture ensure that it can be accurately located the uniform of Helmholtz coil middle
Field region, and guarantee that measured piece direction is parallel with magnetic direction.The fixture have scalability, ensure that the fixture have compared with
Good multiplexing capacity, a sleeve clamp can be carried out for various sizes of Helmholtz coil using.The structure installing and dismounting is equal
It is fairly simple, convenient in different time different location test of many times.And the structure stationarity is good, and it will not violence destructive test quilt
Part is surveyed, is also convenient for being tested under the varying environments such as field.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of Helmholtz coil test measured piece stationary fixture proposed by the present invention, which is characterized in that by one
Shaft and two connecting rods being set in the central shaft rod form, and position of two connecting rods in the central shaft rod is adjustable；
Each connecting rod is respectively by supporting block and being fixed in the supporting block radially 3~4 telescopic struts of circumference uniform distribution
Composition, each telescopic strut lengths are identical, effect when by each telescopic strut end and Helmholtz coil interior side contacts
The connecting rod is installed in Helmholtz coil by power and reaction force；Each supporting block center is offered for across described
The through-hole of central shaft rod；The groove for placing experiment test block, and the central shaft rod and the last of the twelve Earthly Branches are offered at the central shaft rod center
The setting of Mu Huozi Coil Coaxial.
Further, the telescopic strut uses Multi-section expansion rod structure, is equipped with quarter on each section of Telescopic rod structure
Degree.
Further, the supporting block center open up for the central shaft rod and test test block also cross through-hole,
The through hole is equipped with shading ring.
Further, the length of the central shaft rod is greater than the spacing of two connecting rods.
Further, the central shaft rod is equipped with scale, for guaranteeing the center of central shaft rod to the distance phase of each connecting rod
Deng.
Further, which, which adopts, is made from an insulative material, including engineering plastics, magnetic dielectric and electrically insulating material.
Further, the elastic layer for testing test block described in build-in is equipped in the groove of the central shaft rod.
Further, the end of each telescopic strut is mounted on hemispherical ends.
Further, the hemispherical ends are made of rubber.
It the features of the present invention and has the beneficial effect that:
1, the present invention is by way of two connecting rods and a central shaft rod cooperation, when realizing using Helmholtz coil
The problem of measured piece positions.It is compared with existing scheme, the program is fixed more to position of the measured piece in Helmholtz coil
Precisely, it is easy to accomplish high-precision height and direction are fixed.In particular, the groove opened up in fixture central shaft rod can be used for fixing quilt
Survey location error caused by part and compensation measured piece thickness.
2, rationally, convenient for disassembly and assembly, reusability is strong, dimension adjustable, a sleeve clamp for each component design of present clip
Helmholtz coil suitable for multiple and different sizes.
3, present clip uses semi-circular rubber end in connection boom end, realizes to increase and rubs and reduce the effect wiped and drawn
Fruit has wind loading rating, is suitable for a variety of environment such as outdoor；Using insulating materials, strong interference immunity, and the fixture will not be right
It tests measured piece and Helmholtz coil itself Distribution of Magnetic Field and generates interference.
Detailed description of the invention
Fig. 1 is that a kind of three-dimensional structure of Helmholtz coil test measured piece stationary fixture of the embodiment of the present invention is illustrated
Figure.
Fig. 2 is the main view of fixture shown in Fig. 1.
Fig. 3 is the schematic diagram being installed on fixture shown in Fig. 1 in Helmholtz coil.
Specific embodiment
Below in conjunction with drawings and the specific embodiments, to technical solution of the present invention, detailed description are as follows:
A kind of Helmholtz coil test measured piece stationary fixture proposed by the present invention, by a central shaft rod and is set in
Two connecting rods composition in the central shaft rod, and position of two connecting rods in the central shaft rod is adjustable；Each connecting rod is divided equally
By supporting block and it is not fixed in the supporting block radially that 3~4 telescopic struts of circumference uniform distribution form, it is each telescopic
Strut lengths are identical, and the active force and reaction force when by each telescopic strut end and Helmholtz coil interior side contacts will
The connecting rod is installed in Helmholtz coil；The through-hole for passing through the central shaft rod is offered in the middle part of each supporting block；Institute
State the groove offered at central shaft rod center for placing measured piece, and central shaft rod setting coaxial with Helmholtz coil.
The following are the embodiment of the present invention 1:
Referring to Fig. 1, the Helmholtz coil test of the present embodiment is with measured piece stationary fixture by the central shaft rod 2 of a fluting
It is formed with two cross connecting rods 1.Four strut lengths of the cross connecting rod 1 of two of them are equal, two connecting rods 1
It is separately fixed in two coils of Helmholtz coil, guarantees that central shaft rod 2 is located at two coils in Helmholtz coil with this
Axis on, and the axis of central shaft rod and coil are axially coincident.It is located at Helmholtz's line at center to can guarantee central shaft rod 2
It encloses in the best region of uniform magnetic field degree, the measured piece that experiment uses is placed in the fluting of central shaft rod 2, that is, is completed tested
The fixation work of part.
The cross connecting rod 1 that the present embodiment fixture uses determines single Hai Muhuo in such a way that four are waited long fulcrum bars
The hereby center of circle of coil, then determine by two cross connecting rods the axial location of two coils of Helmholtz coil.It realizes
The positioning function of Helmholtz coil field region.Principle is simple, and thinking is novel, and accurate positioning is practical.
The main view of the cross connecting rod 1 of the present embodiment fixture is as shown in Fig. 2, wherein four cross struts are adopted
With the Telescopic rod structure 11 of three-stage, spinning in and out are carried out using matched internal and external threads between adjacent two sections of Telescopic rod structures,
The length of strut can be adjusted, freely to cooperate the Helmholtz coil of different-diameter size to use.It is carved on four struts
It is equal can be used to four strut lengths of regulating guarantee for scale.To cooperate cross strut, the supporting block at the middle part of the present embodiment
Also cross block structure is used, the through-hole opened up in the middle part of the cross block structure is located at Helmholtz coil center location.
Referring to 2, the end of four struts of cross connecting rod is respectively mounted hemispherical ends 12.The hemispherical ends can
It is preferably bonded with the arc-shaped inner surface of Helmholtz coil, makes to install more compact.Hemispherical ends 12 use rubber material,
Both it can play the role of increasing friction force, make cross connecting rod 1 be not easy to fall off from Helmholtz coil, can also rise
To insulating effect, interim protection is served as when leak current fault occurs for Helmholtz coil；In addition, rubber contact can also protect the last of the twelve Earthly Branches
Mu Huozi coil is not scratched damage when test of many times, repeated disassembled and assembled fixture.
Referring to fig. 2, cross 1 middle section of connecting rod opens up circular through hole, for connecting with semicircular central shaft rod 2.
The advantage of doing so is that the wiring of measured piece electromagnetic experiment can be drawn from the through-hole, avoid inside Helmholtz coil
Circuit connection is excessively complicated, generates excessive electromagnetic interference.Meanwhile circular through hole can also install shading ring additional, further
The electromagnetic interference that shielded wire generates improves the field quality generated in Helmholtz coil.
Further, 2 length of central shaft rod of the present embodiment is longer, and can penetrate two cross connecting rods 1, so just
In for various sizes of Helmholtz coil alignment jig size.Scale is indicated in central shaft rod 2, scale is 0 at center, and to
Both sides extend.By adjust two cross connecting rods 1 in central shaft rod 2 scale, both make equal guarantee in central shaft rod 2
It is always positioned among Helmholtz coil at center scale 0.Meanwhile groove is opened up in central shaft rod 2, facilitate the fluxgate of experiment
Measured piece of popping one's head in is installed, and also compensates for measured piece thickness bring location error itself to a certain extent, and it is real can to play reduction
Test the effect of error.In addition, in order to adapt to various sizes of measured piece, it is sticked and is used in the groove that can be opened up in central shaft rod 2
The elastic layer of test block is tested described in build-in.
Further, fixture of the invention uses high temperature insulation plastic material (such as engineering plastics), ensure that and is carrying out electricity
Learn experiment when will not because of measured piece Joule heat and damage fixture, also ensuring will not be because of the magnetization characteristic shadow of fixture itself
Ring the Distribution of Magnetic Field in Helmholtz coil.Meanwhile although the low elasticity high-ductility characteristic of plastic material is easily broken off damage, but
It is the deformation of will not be because of load-bearing etc after installing the reason of and causes measured piece position mobile, is conducive to preferably to quilt
Part is surveyed to be positioned.In addition, fixture of the invention is also an option that using magnetic dielectric (such as ceramics) and electrically insulating material system
At.
What the present embodiment was specifically cooperated to Helmholtz coil uses schematic diagram referring to Fig. 3, which is used for
There is the experiment of fluxgate magnetic core output characteristics, wherein the two of Helmholtz coil coil 3 is connected by pedestal 4.Folder of the invention
Meaning is fixed in coil tool as shown, and experiment measured piece 5 is fixed on the groove at 2 center of central shaft rod.
In another embodiment, connecting rod 2 by circular supporting block and is fixed in supporting block radially that circumference is equal
The telescopic strut composition of 3 of cloth, remaining is same as Example 1, and details are not described herein again.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of Helmholtz coil test measured piece stationary fixture, which is characterized in that by a central shaft rod and be set in institute
Two connecting rods composition in central shaft rod is stated, and position of two connecting rods in the central shaft rod is adjustable；Each connecting rod is distinguished
By supporting block and it is fixed in the supporting block radially that 3~4 telescopic struts of circumference uniform distribution form, each telescopic branch
Pole length is identical, by each telescopic strut end and active force when Helmholtz coil interior side contacts and reaction force by institute
Connecting rod is stated to be installed in Helmholtz coil；Each supporting block center offers the through-hole for passing through the central shaft rod；Institute
The groove offered at central shaft rod center for placing experiment test block is stated, and the central shaft rod is coaxial with Helmholtz coil sets
It sets.
2. Helmholtz coil test measured piece stationary fixture as described in claim 1, which is characterized in that described telescopic
Strut uses Multi-section expansion rod structure, is equipped with scale on each section of Telescopic rod structure.
3. Helmholtz coil test measured piece stationary fixture as described in claim 1, which is characterized in that the supporting block
Center open up for the central shaft rod and test test block also cross through-hole, the through hole be equipped with shading ring.
4. Helmholtz coil test measured piece stationary fixture as described in claim 1, which is characterized in that the central shaft rod
Length be greater than two connecting rods spacing.
5. Helmholtz coil test measured piece stationary fixture as described in claim 1, which is characterized in that the central shaft rod
It is equipped with scale, for guaranteeing center being equidistant to each connecting rod of central shaft rod.
6. Helmholtz coil test measured piece stationary fixture as described in claim 1, which is characterized in that the fixture uses
Insulating materials is made, including engineering plastics, magnetic dielectric and electrically insulating material.
7. Helmholtz coil test measured piece stationary fixture as described in claim 1, which is characterized in that the central shaft rod
Groove in be equipped with elastic layer for testing test block described in build-in.
8. the Helmholtz coil test measured piece stationary fixture as described in any one of claim 1~7, feature exist
In the end of each telescopic strut is mounted on hemispherical ends.
9. Helmholtz coil test measured piece stationary fixture as claimed in claim 8, which is characterized in that the hemispherical
End is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811465946.XA CN109596863B (en) | 2018-12-03 | 2018-12-03 | Tested part fixing clamp for Helmholtz coil test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811465946.XA CN109596863B (en) | 2018-12-03 | 2018-12-03 | Tested part fixing clamp for Helmholtz coil test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109596863A true CN109596863A (en) | 2019-04-09 |
| CN109596863B CN109596863B (en) | 2020-11-27 |
Family
ID=65959429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811465946.XA Active CN109596863B (en) | 2018-12-03 | 2018-12-03 | Tested part fixing clamp for Helmholtz coil test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109596863B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082668A (en) * | 2019-05-23 | 2019-08-02 | 南京师范大学泰州学院 | A kind of component-fixing device for Helmholtz coil measurement of magnetic field |
| CN111487523A (en) * | 2020-04-29 | 2020-08-04 | 江苏七维测试技术有限公司 | Hall sensor testing method for carrying IC tester |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070096857A1 (en) * | 2005-10-31 | 2007-05-03 | Honeywell International Inc. | Helmholtz coil system |
| CN103048551A (en) * | 2011-10-17 | 2013-04-17 | 中国科学院空间科学与应用研究中心 | Center regulating rotary table for Helmholtz coil |
| CN204679618U (en) * | 2015-06-05 | 2015-09-30 | 中国地震局地球物理研究所 | A kind of three-dimensional orthogonal coil device of field homogeneity distribution |
| CN205264434U (en) * | 2015-12-24 | 2016-05-25 | 钢铁研究总院 | Three -dimensional helmholtz coil frame of modified |
| CN205539415U (en) * | 2016-03-11 | 2016-08-31 | 宁波市计量测试研究院（宁波市衡器管理所） | Magnetic declination measurement device |
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2018
- 2018-12-03 CN CN201811465946.XA patent/CN109596863B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070096857A1 (en) * | 2005-10-31 | 2007-05-03 | Honeywell International Inc. | Helmholtz coil system |
| CN103048551A (en) * | 2011-10-17 | 2013-04-17 | 中国科学院空间科学与应用研究中心 | Center regulating rotary table for Helmholtz coil |
| CN204679618U (en) * | 2015-06-05 | 2015-09-30 | 中国地震局地球物理研究所 | A kind of three-dimensional orthogonal coil device of field homogeneity distribution |
| CN205264434U (en) * | 2015-12-24 | 2016-05-25 | 钢铁研究总院 | Three -dimensional helmholtz coil frame of modified |
| CN205539415U (en) * | 2016-03-11 | 2016-08-31 | 宁波市计量测试研究院（宁波市衡器管理所） | Magnetic declination measurement device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082668A (en) * | 2019-05-23 | 2019-08-02 | 南京师范大学泰州学院 | A kind of component-fixing device for Helmholtz coil measurement of magnetic field |
| CN110082668B (en) * | 2019-05-23 | 2024-01-30 | 南京师范大学泰州学院 | Element fixing device for Helmholtz coil magnetic field test |
| CN111487523A (en) * | 2020-04-29 | 2020-08-04 | 江苏七维测试技术有限公司 | Hall sensor testing method for carrying IC tester |
| CN111487523B (en) * | 2020-04-29 | 2021-04-06 | 江苏七维测试技术有限公司 | Hall sensor testing method for carrying IC tester |
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| Publication number | Publication date |
|---|---|
| CN109596863B (en) | 2020-11-27 |
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