CN109116276A - A kind of permanent magnet suspension force checking device for Halbach array - Google Patents
A kind of permanent magnet suspension force checking device for Halbach array Download PDFInfo
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- CN109116276A CN109116276A CN201810993339.4A CN201810993339A CN109116276A CN 109116276 A CN109116276 A CN 109116276A CN 201810993339 A CN201810993339 A CN 201810993339A CN 109116276 A CN109116276 A CN 109116276A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/12—Measuring magnetic properties of articles or specimens of solids or fluids
- G01R33/1261—Measuring magnetic properties of articles or specimens of solids or fluids using levitation techniques
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Abstract
A kind of permanent magnet suspension force checking device for Halbach array, including universal testing machine, the array test fixture block connecting with the test lead of the universal testing machine, one is additionally provided in array test fixture block for fixing the Halbach array placing device of Halbach array.Halbach array placing device therein avoids each permanent magnet magnetic interaction in array that magnet is caused to overturn, collide with magnet, destroys magnetic circuit using the barrier between different magnet mounting holes.Cooperate the bolt between array test fixture block again, the present invention can be avoided in test process between permanent magnet array laterally offset caused by angle or spacing variation, eliminate dislocation.The device of the invention structure is simple, low manufacture cost.Also, by the combination between different location holes and positioning protrusion, the present invention also provides the freedom degrees having in multiple angles, it is convenient to carry out the relevant test of magnetic force.
Description
Technical field
The present invention relates to permanent magnetic suspension technology field more particularly to a kind of detection devices of permanent magnet suspension power.
Background technique
Halbach array is a kind of novel permanent magnet arrangement mode, it is by the permanent magnet of the different direction of magnetizations according to one
Fixed sequence arrangement enhances the field strength in unit direction, makes Halbach array one side using the arrangement of special magnet unit
Magnetic field significantly increases, and the magnetic field of another side is obviously reduced, and the magnetic field of more preferably Sine distribution is obtained spatially with this.
The engineering characteristic of this near ideal of Halbach array so that the array just can be generated merely with seldom magnet it is sufficiently strong
The magnetic field of degree.Therefore, Halbach array receives the extensive concern of academia and industry, magnetic-levitation field of traffic,
Magneto field and medical field show wide application prospect.
The suspension type permanent magnetic levitation train being made of Halbach array is realized by the interaction force between permanent magnet
Train suspends.The track for delivering the magnetic suspension train is combined in a certain order by the permanent magnet of the different direction of magnetizations of needs,
It is laid with.Compared to commonly often leading or low-temperature superconducting train system, although Halbach array permanent magnet suspension system is for forever
The demand of magnet is larger, but it still has: principle is simple, and project cost is relatively low, needs in train motion process to electric energy
Ask less, it is lower for environmental requirements such as temperature and easy to accomplish, etc. advantages.Therefore, the suspension type that Halbach array is constituted
Permanent magnetic levitation train has broad application prospect.
For the stability of guarantee Halbach permanent magnetic levitation train power, traveling comfort and using its magnetic suspension
The safety of train, when using the technology, the Halbach array that inevitably needs the permanent magnet to the different trades mark to be constituted
Permanent magnet suspension power size carry out accurate experiment test.Relevant experiment at least needs to include to the horizontal suspending power of single array
Measurement, or the measurement to double magnetic array suspending power in different angle and gap.These test data of experiment for
The research of permanent magnetic levitation train has important directive significance.
But the detection device of the current deficient permanent magnet suspension power for being suitable for Halbach array.Traditional test device,
Since it never considers that the arrangement difficulty of Halbach permanent magnet array itself and array angle or gap change to upper and lower magnetic battle array
The influence of lateral force between column, is difficult to be applied in the test of Halbach array.Even if it is used for Halbach times reluctantly
The measurement of column also needs to increase complicated structure for test device mostly, and cost is higher.
Summary of the invention
In order to solve the shortcomings of the prior art, the purpose of the present invention is to provide a kind of for Halbach array
Permanent magnet suspension force checking device.The device has many advantages, such as that structure is simple and convenient to operate, and can quickly and effectively carry out
The assembling of Halbach array is completed the test of permanent magnet suspension power under different form, different angle, different gap, is effectively prevented
Lateral forces caused by reducing in test process because of angle change, gap, guarantee the accuracy of test data.
Specifically, to achieve the above object, the present invention proposes that a kind of permanent magnet suspension power for Halbach array detects
Device, comprising: universal testing machine, the universal testing machine be it is a kind of collect the functions such as stretching, bending, compression, shearing, ring stiffness in
The Material Testing Machine of one, is mainly used for metal, nonmetallic materials mechanical property test；The test lead of the universal testing machine connects
It is connected to array test fixture block, is additionally provided with Halbach array placing device in the array test fixture block；The Halbach array peace
Setting device and the array test fixture block is non-magnetic material.Wherein, a side of the Halbach array placing device is equipped with
The magnet mounting hole of internal stretch more than two, to the Halbach array placing device, the quantity of the magnet mounting hole
And the shape of each magnet bore matches with the permanent magnet in the Halbach array, and barrier is equipped between the magnet,
The magnet mounting hole is by the fixed device sealing of array；The array test fixture block includes at least a pair being oppositely arranged, described
Each array test fixture block includes: fixed part and clamping part；The clamping part is for clamping and fixing the Halbach array peace
Set device；The fixed part is set to one end on the clamping part far from the Halbach array placing device, is used for and described ten thousand
It can testing machine connection；It is fixed respectively by bolt between each pair of array test clip block.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the array to be solid
Determining device includes a metal block, and the two sides of the metal block are fixedly connected by bolt with the Halbach array placing device, close
The magnet mounting hole is sealed, the metal block is non-magnetic material.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the no magnetic material
Material includes: high manganese nonmagnetic steel, aluminium alloy, aluminium.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the Halbach
Between at least one side and its bottom surface of array placing device, or, at least one side of the Halbach array placing device with
Between its top surface, at an acute angle or obtuse angle.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the array to be surveyed
The clamping part of examination fixture block includes the groove body for accommodating the Halbach array placing device, and the opening of the groove body is equipped with spiral shell
Bolt limiting device is additionally provided with limit hole in the middle part of the bolt limiting device；It is described between the opposite array test fixture block
Limit hole is opposite；Between the opposite array test fixture block, the bolt by passing through the limit hole is fixed.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the array to be surveyed
The outer wall for trying the inner wall and the Halbach array placing device of the groove body of fixture block fits；The bolt limiting device with it is described
Between Halbach array placing device, alternatively, the array is fixed between the permanent magnet in device and the Halbach array also
Thickness of jumping a queue is at least the aluminium-foil gasket of 0.5mm.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein each array
It tests between the fixed part and clamping part of fixture block and is fixed by fixture；The surface of the fixture offers at least a pair of of location hole；
The clamping part surface of array test fixture block is additionally provided at least a pair of of positioning protrusion, the shape of the positioning protrusion, size with it is described
The geomery of location hole matches；The array test fixture block is fixed on institute by the positioning protrusion and the location hole
It states in fixture.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the location hole
Including horizontal location hole and angle location hole；The horizontal location hole is horizontally arranged strip hole, the angle
Location hole is set to the side of the fixture, is distributed along oblique line.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein be oppositely arranged
Between the pair of array test fixture block, between horizontal location hole and each angle location hole line formed with horizontal direction
Angle.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein be oppositely arranged
Between the pair of array test fixture block, between horizontal location hole and each angle location hole line formed with horizontal direction
Angle is respectively 6 °, 12 °, 18 °, 24 °.
Beneficial effect
(1) by array placing device, the array of the magnet of four different direction of magnetizations can simple, safe, be rapidly completed
Sequence constructs Halbach array, and realizes the firm connection with fixture block, guarantees the validity of experimental data；
(2) by limit components such as aluminium-foil gasket, bolts, it is avoided that in test process that angle and spacing change caused battle array
Dislocation is eliminated in column laterally offset；
(3) different form, different angle, different spacing are realized in the connection for passing through array placing device and different type fixture block
The test of Halbach array permanent magnet suspension power, it is equipment overall simple, at low cost and operate conveniently, avoid certain measuring technologies
In the defects of structure is complicated, cumbersome and at high cost.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, and with it is of the invention
Embodiment together, is used to explain the present invention, and is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of schematic diagram of the permanent magnet suspension force checking device for Halbach array according to the present invention；
Fig. 2 is the side view for showing the connection relationship between one pair of them array test fixture block；
Fig. 3 is the schematic diagram of the wherein sealing magnet mounting hole using the fixed device of array；
Fig. 4 is the signal of the wherein installation relation of the fixed device of Halbach array placing device, array and aluminium-foil gasket
Figure；
Fig. 5 is the schematic diagram of another permanent magnet suspension force checking device for Halbach array according to the present invention；
Fig. 6 is the schematic diagram for the array test fixture block being located above in another detection device；
Fig. 7 is the schematic diagram of underlying array test fixture block in another detection device；
Fig. 8 is the schematic diagram of the clamping part in the array test fixture block in another detection device.
Specific embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
The present invention is provided with a kind of for being made of Halbach magnetic array the permanent magnet of the different direction of magnetizations, and realizes not
Same form, different angle, the test device of different spacing Halbach array permanent magnet suspension power.The test device structure is simple, grasps
Facilitate, the assembling of Halbach array can be fast implemented, completes permanent magnet suspension power under different gap and test, and effectively avoid
The problems such as array misplaces during the test.
Under the first implementation of the invention.
Fig. 1 provides a kind of permanent magnet suspension force checking device for Halbach array, comprising: universal testing machine is not shown
It is shown in visual angle shown in Fig. 1, the universal testing machine is a kind of to integrate the functions such as stretching, bending, compression, shearing, ring stiffness
Material Testing Machine, be mainly used for metal, nonmetallic materials mechanical property test；Two tests up and down of the universal testing machine
End is connected separately with array test fixture block 2, is additionally provided with Halbach array placing device 1 in the array test fixture block 2；It is described
Halbach array placing device 1 and the array test fixture block 2 are non-magnetic material.
Wherein, a side of the Halbach array placing device 1 is equipped with 4, disposes to the Halbach array
The shape of the magnet mounting hole 11 of the internal stretch of device, the quantity of the magnet mounting hole and each magnet bore with it is described
Permanent magnet in Halbach array matches, and barrier 12 is equipped between the magnet, and the magnet mounting hole is filled by array is fixed
Set 13 sealings.Halbach array exists simultaneously the strip magnet of four different direction of magnetizations, realizes that its connection needs to overcome four kinds
(the upper end array direction of magnetization is followed successively by down, is left, upper, right the magnetic interaction of different directions, corresponding array lower end battle array
The column direction of magnetization is followed successively by, left, down, right), and ensure the firmness of its connection, avoid magnetic interaction after connection from causing
Magnet overturning, collide with magnet, destroys magnetic circuit, and constitute certain threaten to personnel safety.The Halbach gusts is directed in the present invention
Arrange used array placing device, there are four square holes (size are consistent with magnet is disposed) in array placing device, respectively by thickness
The non-magnetic material (such as high manganese nonmagnetic steel, aluminium alloy) for spending 0.5-1mm (determining according to selected materials intensity) obstructs, this structure
Effectively prevent magnet during the installation process, the magnetic patch overturning that the magnet of the different direction of magnetizations causes under magnetic interaction is kept away
Exempt to have saved testing cost because of magnet losses caused by hitting in installation process, also eliminated and exist in personnel's installation process
Security risk, realize Halbach array simple, safety and efficiently assemble.
In described device, array test fixture block 2 is to be oppositely arranged at least a pair of, each array test fixture block above and below
It include: fixed part 21 and clamping part 22；The clamping part is for clamping and fixing the Halbach array placing device；It is described
Fixed part is set to one end on the clamping part far from the Halbach array placing device, is used for and the universal testing machine
Connection；It is limited and is consolidated by being mounted on the bolt 221 of quickening periphery respectively between each pair of array test clip block
It is fixed.
Further, with reference to Fig. 3, above-mentioned fixture block, both ends can also be equipped with bolt limiting device, have limit hole in device,
Upper and lower two fixture blocks are fixed by stay bolt, to eliminate in test process, as test angle and spacing change, battle array
Lateral force caused by magnetic interaction increases between column, and upper and lower array misplaces, it is ensured that test data result it is accurate
Property.Alternatively, optional, the permanent magnet suspension force checking device as described above for being used for Halbach array, wherein the array is solid
Determining device 13 can be selected a metal block, and the two sides of the metal block connect by the way that bolt and the Halbach array placing device are fixed
It connects, seals the magnet mounting hole, the metal block is non-magnetic material.Increase on the fixed device of array and is passed through for accommodating bolt
Bolt limiting device 223, realize same limit, fixed effect.Wherein, limit is additionally provided in the middle part of the bolt limiting device
Position hole 224；Between the opposite array test fixture block, the limit hole is opposite；Between the opposite array test fixture block,
By passing through the limit hole.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the no magnetic material
Material includes: high manganese nonmagnetic steel, aluminium alloy, aluminium.In this way, non-magnetic material is applied to above-mentioned middle array placing device, is used for array
The fixture block of test, for the fixture or bolt for limit etc. of angle control, can avoid in test process test device from
Exchange interaction between body and magnet does not constitute influence on magnetic circuit, it is ensured that test data it is accurate
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the Halbach
Between at least one side and its bottom surface of array placing device 1, or, at least one side of the Halbach array placing device 1
Between its top surface, at an acute angle or obtuse angle.That is, described three lateral layout wedgewises of array placing device, for its with it is polygonal
The interconnection for spending array test fixture block increases the reliability of its connection, has prevented in test process array under magnetic action
Swing, it is ensured that test data it is accurate.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the array to be surveyed
The clamping part of examination fixture block 2 includes the groove body 222 for accommodating the Halbach array placing device, and the opening of the groove body is set
There is bolt limiting device 223, is additionally provided with limit hole 224 in the middle part of the bolt limiting device；Opposite array test folder
Between block, the limit hole is opposite；Between the opposite array test fixture block, by the bolt for passing through the limit hole
It is fixed.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the array to be surveyed
The outer wall for trying the inner wall and the Halbach array placing device of the groove body 222 of fixture block fits；The bolt limiting device 223
Between the Halbach array placing device, alternatively, in the array fixed device (13) and the Halbach array forever
Thickness of also jumping a queue between magnet is at least the aluminium-foil gasket of 0.5mm, to realize the tune of position between fixture block and array placing device
It controls and connect.
Under this implementation, the installation of permanent magnet and test process are as follows:
(1) as shown in figure 4, Halbach magnetic array placing device, for disposing the magnetic patch of the different direction of magnetizations.It will take first
The magnetic patch become better is sequentially placed according to the direction of magnetization, and is smeared in binder push-in placing device in magnet surface, and to be bonded dose solid
After change, according still further to the above method, the sequence according to needed for array is pushed in turn the magnet of subsequent three direction of magnetizations, terminates magnetic patch
Placement in array.
(2) by the lateral load level array test fixture block (as shown in Figure 1) of the array placed, and the battle array for passing through side
It arranges fixed device (Fig. 4) to be confined, prevents its lateral movement, also need Ansai aluminium-foil gasket between placing device and fixed device
The phenomenon that (Fig. 4), magnetic array loosens caused by preventing because of hole.
(3) in the fixed device of mounted array, it is also necessary to be inserted in the synchronous installation in left and right ends of horizontal array test fixture block
It sells limiting device (Fig. 1), the secured connection of fixture block, fixed device and limiting device three is realized by bolt.
(4) after being installed upper and lower horizontal checkout fixture block, it is fixed on universal testing machine, carries out single Halbach array
The test of horizontal permanent magnet suspension power.
(5) suitably reduced the distance between fixture block (about 20mm) using universal testing machine, and using stay bolt to upper and lower
The limit of two fixture blocks, prevents array from lateral deviation occurs because of hypotelorism.
(6) primary clearance (ruler measurement) of upper and lower two array is set by universal testing machine, then tests two arrays point
Not gap be 3,4,5,6,7,8,9,10,11,12,13,14, the 15mm thickness 0.5-1mm of placing device (need plus) when, forever
The specific value of magnetic suspension force, the horizontal single Halbach array permanent magnet suspension power test result of N48 magnet are as shown in table 1.
The horizontal permanent magnet suspension power test result of the single Halbach array of table 1.N48 magnet
Comparative example 1
As shown in the 1st kind of implementation, the horizontal permanent magnet suspension power of single Halbach array is carried out in the same manner
Test.The difference is that: array placing device is not used in step (1), but simply by the magnet of four kinds of different direction of magnetizations
Realize that it forces connection by colloid solidification.But test result can not be obtained, at step (6), with upper and lower amount array
Between distance reduction, the enhancing of Exchange interaction, magnet gets rid of the bonding of solid gum, adjacent magnets or upper and lower array magnet
Between occur to turn to self-priming because of magnetic interaction, test can not carry out.
It, can be simple and effective using array placing device by from the point of view of the detection effect of the 1st kind of implementation and comparative example 1
It realizes the installation of Halbach array, and avoids in test process since array pitch diminution causes overturning self-priming of magnet etc. existing
The generation of elephant, also avoids the operator that may cause during self-priming damage, and advantage is significant.
Comparative example 2
As shown in the 1st kind of implementation, the horizontal permanent magnet suspension power of single Halbach array is carried out in the same manner
Test.The difference is that: bolt limiting device is not installed in step (3), but on leaving in the case where not applying limit,
Lower two arrays are close to each other, test permanent magnet suspension power size when different spacing.But test result can not be also obtained, in step
(6) when, with the reduction of distance between upper and lower amount array, the enhancing of Exchange interaction, it is upper and lower between serious dislocation occurs,
Attraction is changed by repulsive force.
By can effectively be kept away using bolt limiting device from the point of view of the detection effect of the 1st kind of implementation and comparative example 2
When exempting from array pitch reduction, array dislocation caused by aggravating due to magnetic interaction ensure that permanent magnet suspension power test result
Accuracy.
Under second of implementation of the invention:
Similar with the upper permanent magnet suspension force checking device structure for Halbach array, difference essentially consists in:
With reference to Fig. 5, also increasing between the fixed part 21 and clamping part 22 of each array test fixture block has fixture, the array test folder
It is fixed by fixture 3 between the fixed part 21 and clamping part 22 of block.
The survey of different form array permanent magnetism suspending power may be implemented in connection between array placing device and different type fixture block
Examination: connect with the single array horizontal detector in a upper embodiment, can on testing level direction when different gap it is single
The variation of magnetic array suspending power；Fixture is controlled with Fig. 6 and multi-angle shown in Fig. 7 by bolt to be connected, and can test different angles
Double array suspending power situation of change forever under degree and gap.Refer to and double array multi-angle permanent magnet suspension shown in fig. 5 tested,
Wherein, the symmetrical two pairs of Halbach array placing devices received are led in multiple rows of finger figure.This pacifies for multiple rows of Halbach array
Set the fixed fixture of device, enable horizontal array test fixture block by bolt and be connected with multi-angle control fixture, using bolt from it is different
The cooperation of position pin hole, the variation of angle when realizing the test of permanent magnet suspension power.Array placing device is located in fixture block, passes through bolt
It realizes and fastens between the fixed device of array, in addition, needing the aluminium foil jumped a queue with a thickness of 0.5mm between fixed device and placing device
Gasket compensates position change caused by upper and lower array changes because of angle or spacing, prevents array dislocation, it is ensured that test number
According to it is accurate.Bolt hole is formed between the fixed device three of bolt limiting device, array test fixture block and array, is only passed through
One bolt can be achieved with the secured connection of three, while also simplify equipment, reduce its complexity.
The surface of the fixture 3 offers at least a pair of of location hole 31；The clamping part surface of array test fixture block 2 is additionally provided with
At least a pair of of positioning protrusion 224, shape, size and the geomery of the location hole of the positioning protrusion match；It is described
Array test fixture block 2 is fixed in the fixture by the positioning protrusion and the location hole.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein the location hole
31 include horizontal location hole and angle location hole；The horizontal location hole is horizontally arranged strip hole, the angle
Degree location hole is set to the side of the fixture 3, is distributed along oblique line.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein be oppositely arranged
Between the pair of array test fixture block 2, between horizontal location hole and each angle location hole line formed and horizontal direction
Angle.
Optionally, it is used for the permanent magnet suspension force checking device of Halbach array as described above, wherein be oppositely arranged
Between the pair of array test fixture block 2, between horizontal location hole and each angle location hole line formed and horizontal direction
Angle be respectively 6 °, 12 °, 18 °, 24 °.
The advantages of technical solution of the present invention, is mainly reflected in: providing a kind of Halbach battle array of suspension type magnetic suspension train
Column permanent magnet suspension force checking device, device include: array placing device, for overcoming the magnet of the different direction of magnetizations to interact
Power, that realizes Halbach array stablizes arrangement；Single horizontal checkout fixture block or double multi-angle can be selected in array test fixture block
Fixture block is tested, to dispose the Halbach array；Array fixes device, and array placing device is fixed in test fixture block；It inserts
Limiting device is sold, is prevented in test process, laterally offset caused by upper and lower magnetic array interacts；Folder for angle control
Tool provides angle change for the test of double suspending power.It is an object of the invention to overcome different direction of magnetization magnets in array
Interaction simply, safely and fast installs magnetic array, eliminates the error that array laterally offset causes in test process, realizes
For the multi-form of Halbach array, the test of multi-angle, more spacing permanent magnet suspension power.
Under this implementation, the installation and checkout process of permanent magnet is as follows:
(1) as shown in figure 4, Halbach magnetic array placing device, for disposing the magnetic patch of the different direction of magnetizations.It will take first
The magnetic patch become better is sequentially placed according to the direction of magnetization, and is smeared in binder push-in placing device in magnet surface, and to be bonded dose solid
After change, according still further to the above method, the sequence according to needed for array is pushed in turn the magnet of subsequent three direction of magnetizations, terminates magnetic patch
Placement in array.
(2) array placed is laterally fitted into multi-angle array test fixture block (as shown in Figure 2), and passes through side
Array fixed device (Fig. 2) is confined, its lateral movement is prevented, and is also needed between placing device and fixed device according to testing
The variation of journey medium spacing and angle, Ansai aluminium-foil gasket (Fig. 4) compensate position gap, prevent array dislocation.
(3) in the fixed device of mounted array, it is also necessary in the synchronous installation bolt in the outer end of multi-angle array test fixture block
Limiting device (Fig. 2) realizes the secured connection of fixture block, fixed device and limiting device three by bolt.
(4) fixture block will be tested by bolt and angle control fixture (Fig. 5) is connected with each other, and according to the angle of required test
Degree selects snibbing position, realizes the transformation of upper and lower two fixture angles, angular range 0,6,12,18,24o.
(5) upper and lower two angle control fixture is fixed on universal testing machine, carries out double Halbach array multi-angle forever
The test of magnetic suspension force.
(6) reduced the distance between two sets of fixture blocks (about 20mm) using universal testing machine, and by stay bolt to upper and lower
The limit of two fixture blocks, prevents array from lateral deviation occurs during hypotelorism.
(7) primary clearance (ruler measurement) of upper and lower two array is set by universal testing machine, then tests two arrays point
Not gap be 3,4,5,6,7,8,9, the 10mm thickness 0.5-1mm of placing device (need plus) when, permanent magnet suspension power it is specific
Numerical value, the double Halbach array multi-angle permanent magnet suspension power test result of N48 magnet are as shown in table 2.
The double Halbach array multi-angle permanent magnet suspension power test result of table 2.N48 magnet
Comparative example 3
As shown in the 2nd kind of implementation, double Halbach array multi-angle permanent magnet suspension power are carried out in the same manner
Test.The difference is that: array placing device is not used in step (1), but simply by the magnet of four kinds of different direction of magnetizations
Realize that it forces connection by colloid solidification.But test result can not be obtained, at step (6), with upper and lower amount array
Between the variation of angle and the reduction of distance, the enhancing of Exchange interaction, magnet gets rid of the bonding of solid gum, adjacent magnets or
Because magnetic interaction occurs to turn to self-priming between upper and lower array magnet, test can not be carried out.
It, can be simple and effective using array placing device by from the point of view of the detection effect of the 2nd kind of implementation and comparative example 3
It realizes the installation of Halbach array, and avoids in test process since array pitch diminution causes overturning self-priming of magnet etc. existing
The generation of elephant, also avoids the operator that may cause during self-priming damage, and advantage is significant.
Comparative example 4
As shown in the 2nd kind of implementation, the survey of horizontal single Halbach array permanent magnet suspension power is carried out in the same manner
Examination.The difference is that: non-Ansai aluminium-foil gasket in step (2) supplements in test process because angle and space change are formed
Array dislocation.At step (6), with the transformation of angle and the reduction of distance between upper and lower amount array, it is upper and lower between
Serious dislocation occurs, attraction is changed by repulsive force.
By from the point of view of the detection effect of the 2nd kind of implementation and comparative example 4, use aluminium-foil gasket can with effective compensation due to
Array dislocation caused by pitch dimension shrinkage and angle change ensure that the accuracy of permanent magnet suspension power test result.
Comparative example 5
As shown in the 2nd kind of implementation, the survey of horizontal single Halbach array permanent magnet suspension power is carried out in the same manner
Examination.The difference is that: bolt limiting device is not installed, but it is upper and lower to leave in the case where not applying limit in step (3)
Two arrays are close to each other, test permanent magnet suspension power size when different spacing.But test result can not be also obtained, in step
(6) when, with the variation of angle and the reduction of distance between upper and lower amount array, it is upper and lower between serious dislocation occurs, by
Repulsive force is changed into attraction.
By can effectively be kept away using bolt limiting device from the point of view of the detection effect of the 2nd kind of implementation and comparative example 5
When exempting from array pitch reduction, array dislocation caused by aggravating due to magnetic interaction ensure that permanent magnet suspension power test result
Accuracy.
Those of ordinary skill in the art will appreciate that: the foregoing is only a preferred embodiment of the present invention, and does not have to
In the limitation present invention, although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art
For, still can to foregoing embodiments record technical solution modify, or to part of technical characteristic into
Row equivalent replacement.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should all include
Within protection scope of the present invention.
Claims (10)
1. a kind of permanent magnet suspension force checking device for Halbach array, including
Universal testing machine,
The test lead of the universal testing machine is connected with array test fixture block (2),
Halbach array placing device (1) is additionally provided in the array test fixture block (2)
The Halbach array placing device (1) and the array test fixture block (2) are non-magnetic material；
It is characterized in that,
One side of the Halbach array placing device (1) be equipped with it is more than two, to the Halbach array dispose
The shape of the magnet mounting hole (11) of the internal stretch of device, the quantity of the magnet mounting hole and each magnet bore with it is described
Permanent magnet in Halbach array matches, and barrier (12) is equipped between the magnet, and the magnet mounting hole is fixed by array
Device (13) sealing；
The array test fixture block (2) includes at least a pair being oppositely arranged, and each array test fixture block includes: fixed part
(21) with clamping part (22)；
The clamping part is for clamping and fixing the Halbach array placing device；
The fixed part is set to one end on the clamping part far from the Halbach array placing device, is used for and described ten thousand
It can testing machine connection；
It is fixed by bolt (221) respectively between each pair of array test clip block.
2. being used for the permanent magnet suspension force checking device of Halbach array as described in claim 1, which is characterized in that the battle array
Arranging fixed device (13) includes a metal block, and the two sides of the metal block are solid by bolt and the Halbach array placing device
Fixed connection, seals the magnet mounting hole, and the metal block is non-magnetic material.
3. being used for the permanent magnet suspension force checking device of Halbach array as claimed in claim 2, which is characterized in that the nothing
Magnetic material includes: high manganese nonmagnetic steel, aluminium alloy, aluminium.
4. being used for the permanent magnet suspension force checking device of Halbach array as claimed in claim 2, which is characterized in that described
Between at least one side and its bottom surface of Halbach array placing device (1), or, the Halbach array placing device (1)
Between at least one side and its top surface, at an acute angle or obtuse angle.
5. being used for the permanent magnet suspension force checking device of Halbach array as claimed in claim 4, which is characterized in that the battle array
The clamping part of column test fixture block (2) includes the groove body (222) for accommodating the Halbach array placing device, the groove body
Opening is equipped with bolt limiting device (223), is additionally provided with limit hole (224) in the middle part of the bolt limiting device；
Between the opposite array test fixture block, the limit hole is opposite；Between the opposite array test fixture block, pass through
The bolt across the limit hole is fixed.
6. being used for the permanent magnet suspension force checking device of Halbach array as claimed in claim 4, which is characterized in that the battle array
The outer wall of the inner wall and the Halbach array placing device of the groove body (222) of column test fixture block fits；
Between the bolt limiting device (223) and the Halbach array placing device, alternatively, the array fixes device
(13) thickness of also jumping a queue between the permanent magnet in the Halbach array is at least the aluminium-foil gasket of 0.5mm.
7. being used for the permanent magnet suspension force checking device of Halbach array as claimed in claim 4, which is characterized in that described each
It is fixed by fixture (3) between the fixed part (21) and clamping part (22) of array test fixture block；
The surface of the fixture (3) offers at least a pair of of location hole (31)；
The clamping part surface of array test fixture block (2) is additionally provided at least a pair of of positioning protrusion (224), the shape of the positioning protrusion
Shape, size and the geomery of the location hole match；
The array test fixture block (2) is fixed in the fixture by the positioning protrusion and the location hole.
8. being used for the permanent magnet suspension force checking device of Halbach array as claimed in claim 7, which is characterized in that described fixed
Position hole (31) includes horizontal location hole and angle location hole；
The horizontal location hole is horizontally arranged strip hole,
The angle location hole is set to the side of the fixture (3), is distributed along oblique line.
9. being used for the permanent magnet suspension force checking device of Halbach array as claimed in claim 8, which is characterized in that opposite to set
Between the pair of array test fixture block (2) set, between horizontal location hole and each angle location hole line formed and water
Square to angle.
10. the permanent magnet suspension force checking device for Halbach array as described in claim 8 to 9, which is characterized in that phase
To between the pair of array test fixture block (2) of setting, line is formed between horizontal location hole and each angle location hole
Angle with horizontal direction is respectively 6 °, 12 °, 18 °, 24 °.
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| CN201810993339.4A CN109116276B (en) | 2018-08-29 | 2018-08-29 | Permanent magnet suspension force detection device for Halbach array |
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| CN201810993339.4A CN109116276B (en) | 2018-08-29 | 2018-08-29 | Permanent magnet suspension force detection device for Halbach array |
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| CN109116276B CN109116276B (en) | 2021-01-29 |
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Effective date of registration: 20220817 Address after: 331400 third floor, electronic science and technology park complex building, Xingguo County Economic Development Zone, Ganzhou City, Jiangxi Province Patentee after: Jiangxi permanent magnet Maglev Technology Co.,Ltd. Address before: 341000 No. 156, Hakka Road, Ganzhou, Jiangxi Patentee before: Jiangxi science and Technology Industry Co.,Ltd. |