CN105839483A - Permanent magnetic guide rail - Google Patents
Permanent magnetic guide rail Download PDFInfo
- Publication number
- CN105839483A CN105839483A CN201610316355.0A CN201610316355A CN105839483A CN 105839483 A CN105839483 A CN 105839483A CN 201610316355 A CN201610316355 A CN 201610316355A CN 105839483 A CN105839483 A CN 105839483A
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- Prior art keywords
- permanent magnetic
- permanent
- magnetic guideway
- tracks
- magnetic
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
- E01B25/32—Stators, guide rails or slide rails
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
The invention discloses a permanent magnetic guide rail. The permanent magnetic guide rail is formed by splicing a plurality of permanent magnetic guide rail sections which are sequentially arranged. At least one end of each permanent magnetic guide rail section is provided with a connecting end. The adjacent connecting ends of any two permanent magnetic guide rail sections which are adjacently arranged are at least provided with overlapped parts with preset areas in the vertical direction. According to the permanent magnetic guide rail, the uniformity of a magnetic field in the running direction of a track can be effectively improved, and the running magnetic resistance can be reduced.
Description
Technical field
The present invention relates to high-temperature superconducting magnetic levitation technology, particularly to a kind of permanent magnetic guideway.
Background technology
Tracks of permanent magnetism, as the offer source, magnetic field of high temperature superconducting magnetic suspension system, is in high temperature superconducting magnetic suspension system
Very important part.Under normal conditions, tracks of permanent magnetism is spliced by countless tracks of permanent magnetism sections.
Tracks of permanent magnetism of the prior art is that the tracks of permanent magnetism section by countless rectangular shapes is spliced, therefore
Can be by the referred to as docking of this track connected mode.
In high temperature superconductor magnetic levitation vehicle system, flux pinning properties based on vehicle-mounted bulk, magnetic floats car always edge
The direction field homogeneity is run.But, in actual application scenarios, often because of alignment error, heat
The reasons such as swollen shrinkage cause the connection between tracks of permanent magnetism section closely corresponding air gap do not occur, thus cause
Above tracks of permanent magnetism, the Distribution of Magnetic Field of traffic direction is uneven, i.e. produces the distortion of field.Gas when between tracks of permanent magnetism
When gap is less, above tracks of permanent magnetism, the distortion of field is less, magnetic can be caused to float car and run unstable；What is more,
When occurring bigger air gap when between tracks of permanent magnetism, above tracks of permanent magnetism, the distortion of field is relatively big, and magnetic may be caused to float
Car can not pass through, and forms fatal system shortcoming.
Fig. 1 is the structural representation of tracks of permanent magnetism of the prior art.As it is shown in figure 1, at high-temperature superconductor magnetcisuspension
In floating system, tracks of permanent magnetism is spliced into tracks of permanent magnetism by multiple tracks of permanent magnetism sections 10, and magnetic floats car and relies on permanent magnetism
Track provides uniform magnetic field at traffic direction, realizes stable suspension operation in the magnetic field being laterally provided with gradient.
But, tracks of permanent magnetism section can because expand with heat and contract with cold, the reason such as track installation error causes that tracks of permanent magnetism is intersegmental to be deposited
At air gap so that tracks of permanent magnetism, at the Magnetic field inhomogeneity of traffic direction, affects magnetic and floats the even running of car.
Fig. 2 is the docking connection diagram of tracks of permanent magnetism of the prior art.As in figure 2 it is shown, available λ1Table
Show the air gap between two tracks of permanent magnetism sections 11 and 12.Air gap is the biggest, then the magnetic field of traffic direction is the most uneven
Even.But, when reality is applied, expand with heat and contract with cold, the factor such as track installation error is all impossible to keep away completely
Exempt from, accordingly, it would be desirable to design a kind of special tracks of permanent magnetism section connected mode and by this connected mode
The tracks of permanent magnetism formed, thus reduce the track Magnetic field inhomogeneity at traffic direction.
Summary of the invention
In view of this, the present invention provides a kind of permanent magnetic guideway, can be effectively improved the magnetic field of track running direction
Uniformity, reduces the electromagnetic resistance run.
Technical scheme is specifically achieved in that
A kind of permanent magnetic guideway, described permanent magnetic guideway is put together by multiple permanent magnetic guideway sections being arranged in order；
Wherein, at least one end of each permanent magnetic guideway section is provided with connection end；
And the adjacent connecting ends in the vertical direction of the permanent magnetic guideway section of any two arranged adjacent at least has pre-
If the lap of area.
It is also preferred that the left the outer end of the adjacent connecting ends of the permanent magnetic guideway section of two arranged adjacent is inclined-plane.
It is also preferred that the left the size of the angle, θ on described inclined-plane is 30 °.
It is also preferred that the left the outer end of the adjacent connecting ends of the permanent magnetic guideway section of two arranged adjacent is provided with protuberance,
And described protuberance is mutually lapped.
It is also preferred that the left the thickness of two adjacent protrusions is than for 1:2.
It is also preferred that the left a length of 100mm of described protuberance.
The most visible, in the above-mentioned permanent magnetic guideway of the present invention, due at least one end in each permanent magnetic guideway section
It is provided with connection end, and the adjacent connecting ends of the permanent magnetic guideway section of any two arranged adjacent is at vertical direction
On at least there is the lap of preset area, therefore, it is possible to use have the permanent magnetic guideway section of special shape,
Form the intersegmental different connected mode of tracks of permanent magnetism, such as, mitered, overlap joint etc. so that be arranged in order
After each permanent magnetic guideway section composition permanent magnetic guideway, the connection end in the vertical direction that any two is adjacent can be extremely
A rare part can overlap each other, thus reduces because tracks of permanent magnetism alignment error, the reason such as expand with heat and contract with cold
And cause between permanent magnetic guideway section, connecting the air gap the most closely occurred, and make to lead when two adjacent permanent magnetism
Even if air gap occurs between rail section, the most always have permanent magnet and provide magnetic field in air gap below or above.Cause
This, the permanent magnetic guideway being formed by connecting by above-mentioned special connected mode, can efficiently reduce because of heat expansion
Shrinkage, track installation error and the magnetic field bump of tracks of permanent magnetism that causes, reduce owing to air gap causes
The distortion of field, improve track running direction magnetic field homogeneity, reduce run electromagnetic resistance, improve by
The magnetic caused in Magnetic field inhomogeneity floats car and runs the phenomenons such as unstable.
Accompanying drawing explanation
Fig. 1 is the structural representation of tracks of permanent magnetism of the prior art.
Fig. 2 is the docking connection diagram of tracks of permanent magnetism of the prior art.
Fig. 3 is the connection diagram of the permanent magnetic guideway section in embodiments of the invention one.
Fig. 4 is the connection diagram of the permanent magnetic guideway section in embodiments of the invention two.
Fig. 5 is the effect pair of three kinds of permanent magnetic guideway connected modes in prior art and the embodiment of the present invention
Compare schematic diagram.
Detailed description of the invention
For making the purpose of the present invention, technical scheme and advantage clearer, develop simultaneously referring to the drawings
Embodiment, the present invention is described in more detail.
In the inventive solutions, in order to take into account utilization rate and the car body of permanent-magnet material in permanent magnetic guideway
The smooth degree in traffic direction magnetic field, it is provided that a kind of permanent magnetic guideway, this permanent magnetic guideway is that one is applicable to height
The composite magnetic gathering type permanent magnetic guideway of speed superconducting magnetic suspension system, may be used for high Temperature Superconducting MAGLEV, also fits
The application scenarios needing to be provided unilateral high-intensity magnetic field by permanent magnet for other.
Fig. 3 and 4 is the connection diagram of the permanent magnetic guideway in each specific embodiment of the present invention.Such as figure
Shown in 3 and 4, the permanent magnetic guideway in the embodiment of the present invention is by multiple permanent magnetic guideway section splits being arranged in order
Form；
Wherein, at least one end of each permanent magnetic guideway section is provided with connection end；
And the adjacent connecting ends in the vertical direction of the permanent magnetic guideway section of any two arranged adjacent at least has
The lap of preset area.
In the inventive solutions, described permanent magnetic guideway is by a lot of the permanent magnetic guideway being arranged in order
Section is put together.But, for the defect overcoming permanent magnetic guideway of the prior art to exist, at this
In bright technical scheme, each permanent magnetic guideway section of composition permanent magnetic guideway is both provided with connecting end.
It is also preferred that the left in a particular embodiment of the present invention, the one or both ends of each permanent magnetic guideway section are arranged
There is connection end.
For example, it is possible to be in the permanent magnetic guideway section at permanent magnetic guideway edge one end inside tracks of permanent magnetism
Be provided with connect end (it addition, the one end outside the tracks of permanent magnetism can be not provided with connecting end, it is possible to
To arrange connection end)；(i.e. all non-of other is positioned at forever to be positioned at the permanent magnetic guideway section in the middle part of permanent magnetic guideway
The permanent magnetic guideway section of magnetic guiding edge) two ends be provided with connection end.
Additionally, in the inventive solutions, set connection end also needs to meet: any two
The adjacent connecting ends in the vertical direction of the permanent magnetic guideway section of arranged adjacent at least has the overlap of preset area
Part.
Thus, it can be known that in the inventive solutions, the edge connecting end of each permanent magnetic guideway section is also
Being not all of vertical (or being not the most vertical), such as, described connection end can be arranged to
Shape as shown in Figure 3, Figure 4, so that be arranged in order each permanent magnetic guideway section composition permanent magnetism
After guide rail, the connection end in the vertical direction that any two is adjacent can at least part of can overlap each other,
Even if during so that air gap occurs between two adjacent permanent magnetic guideway sections, the most always have permanent magnet and exist
Air gap below or above provides magnetic field.Therefore, it is formed by connecting forever by above-mentioned special connected mode
Magnetic conductance rail, can efficiently reduce because expand with heat and contract with cold, track installation error and the tracks of permanent magnetism that causes
Magnetic field bump, improves the magnetic field homogeneity of track running direction, reduces the electromagnetic resistance run.
Below by the way of several specific embodiments, technical scheme is described in detail.
Embodiment one, one end connecting end of permanent magnetic guideway section are inclined-plane.
Fig. 3 is the connection diagram of the permanent magnetic guideway section in embodiments of the invention one.As it is shown on figure 3,
Described permanent magnetic guideway is put together by multiple permanent magnetic guideway sections being arranged in order.Wherein, for any two
Permanent magnetic guideway section 31 and 32, all be respectively arranged with connection end 31a and 32a, and two connect end 31a and
The outer end of 32a is not vertical edge, but is inclined-plane.In actual installation above-mentioned permanent magnetic guideway section
Time, two connection end 31a and 32a of above-mentioned two permanent magnetic guideway section are to pacify in the case of being in close contact
Dress, so that occur without air gap between two permanent magnetic guideway sections as far as possible.Therefore, above-mentioned two is worked as
After permanent magnetic guideway section 31 and 32 arrangement, connection end 31a and 32a of two permanent magnetic guideway sections 31 and 32
In the vertical direction some can overlap each other, so that between two adjacent permanent magnetic guideway sections
Even if air gap λ occurs2Time, the most always have permanent magnet at air gap λ2Below or above provide magnetic field.
Therefore, in embodiments of the invention one, in described permanent magnetic guideway, any two adjacent permanent magnet guide rail section can
Connect in the way of by above-mentioned mitered.The permanent magnetic guideway being formed by connecting by above-mentioned special mitered mode,
Can efficiently reduce because expand with heat and contract with cold, track installation error and the magnetic field of tracks of permanent magnetism that causes is uneven
Even property, improves the magnetic field homogeneity of track running direction, reduces the electromagnetic resistance run.
It addition, it is also preferred that the left in a particular embodiment of the present invention, can be according to the need of practical situations
Want, pre-set the inclined-plane of the outer end of connection end 31a and 32a of described permanent magnetic guideway section 31 and 32
The size of angle, θ.
Such as, in a preferred embodiment of the present invention, the size of described angle, θ can be 30 °.
Therefore, by optimizing the size of above-mentioned angle, θ, it is also possible to when air gap occurs in tracks of permanent magnetism, further
Improve the magnetic field homogeneity of track running direction, reduce the electromagnetic resistance run.
Embodiment two, one end connecting end of permanent magnetic guideway section are provided with protuberance.
Fig. 4 is the connection diagram of the permanent magnetic guideway section in embodiments of the invention two.As shown in Figure 4,
Described permanent magnetic guideway is put together by multiple permanent magnetic guideway sections being arranged in order.Wherein, for any two
Permanent magnetic guideway section 41 and 42, all be respectively arranged with connection end 41a and 42a, and two connect end 41a and
The outer end of 42a is not vertical edge, but connect end outer end be respectively arranged with protuberance 4A and
4B, and described protuberance 4A and 4B be mutually lapped.When actual installation above-mentioned permanent magnetic guideway section, on
Protuberance 4A and 4B of two the connection ends stating two permanent magnetic guideway sections is to pacify in the case of being in close contact
Dress, so that occur without air gap between two permanent magnetic guideway sections as far as possible.Therefore, above-mentioned two is worked as
After permanent magnetic guideway section 41 and 42 arrangement, connection end 41a and 42a of two permanent magnetic guideway sections 41 and 42
In the vertical direction some (i.e. part of protuberance) can overlap each other, so that when two
Even if air gap λ occurring between adjacent permanent magnetic guideway section3Time, the most always have permanent magnet at air gap λ3Under
Side or offer magnetic field, top.Therefore, in embodiments of the invention two, in described permanent magnetic guideway arbitrarily
Two adjacent permanent magnet guide rail section can connect by the way of above-mentioned overlap joint.By above-mentioned special overlap joint side
The permanent magnetic guideway that formula is formed by connecting, can efficiently reduce because expand with heat and contract with cold, track installation error and lead
The magnetic field bump of the tracks of permanent magnetism caused, improves the magnetic field homogeneity of track running direction, reduces and runs
Electromagnetic resistance.
It addition, it is also preferred that the left in a particular embodiment of the present invention, can be according to the need of practical situations
Want, pre-set the protuberance of the outer end of connection end 41a and 42a of described permanent magnetic guideway section 41 and 42
The thickness of 4A and 4B and the size of length.
Such as, in a preferred embodiment of the present invention, the thickness of described protuberance can be that permanent magnetism is led
The half of the thickness of rail section main body or other value, the length of described protuberance can be 100mm.
Additionally, in the inventive solutions, the thickness of the protuberance connecting end of each permanent magnetic guideway section
Degree can be identical, it is also possible to different.Such as, in a preferred embodiment of the present invention, can basis
Practical situations need to pre-set the thickness ratio of two adjacent protrusions.For example, it is possible to set in advance
Put h1/h2Value (such as, value is 1:2 etc.), wherein, h2For the thickness of protuberance 4A, h1
Thickness for protuberance 4B.
Therefore, by optimizing thickness and the size of length of above-mentioned protuberance, it is also possible to go out at tracks of permanent magnetism
During existing air gap, improve the magnetic field homogeneity of track running direction further, reduce the electromagnetic resistance run.
Fig. 5 is the effect pair of three kinds of permanent magnetic guideway connected modes in prior art and the embodiment of the present invention
Compare schematic diagram.Wherein, it is respectively when 10mm air gap occurs shown in Fig. 5 (a) and Fig. 5 (b),
Magnetic-field component B of the tracks of permanent magnetism traffic direction of three kinds of different connected modesxAnd BzContrast on effect signal
Figure.Wherein, the abscissa in Fig. 5 (a) and Fig. 5 (b) is in y-axis along the position of traffic direction.
Understand according to Fig. 5 (a) and Fig. 5 (b), when air gap occurs, relative to docking side of the prior art
The tracks of permanent magnetism of formula, the tracks of permanent magnetism of the tracks of permanent magnetism of above-mentioned mitered mode and overlapping mode in the present invention
Magnetic field bump all has clear improvement.
For example, it is possible to above-mentioned beneficial effect is carried out quantitative analysis by such a way.
In the inventive solutions, it is possible to use formula as described below represents distortion of field rate:
ηx=(| Bx_dev|-|Bx_nor|)/Bx_nor× 100%
ηz=(| Bz_dev|-|Bz_nor|)/Bz_nor× 100%
Wherein, ηxFor transverse magnetic field aberration rate, ηzFor vertical distortion of field rate, | Bx_nor| represent permanent magnetism rail
Transverse magnetic field components during air-gap-free between road, | Bx_dev| represent transverse magnetic when air gap occurs between tracks of permanent magnetism
Field component；|Bz_nor| represent vertical magnetic-field component during air-gap-free between tracks of permanent magnetism, | Bz_dev| represent permanent magnetism rail
Vertical magnetic-field component during air gap occurs between road.
According to above-mentioned formula, various different tracks of permanent magnetism connected mode can be calculated 10mm air gap occurs
Time, rate of change of magnetic at 15mm working depth above air gap.Result of calculation shows, works as appearance
During 10mm air gap, use docking mode (i.e. connected mode of the prior art shown in Fig. 2) forever
Above the air gap of magnetic orbital, the transverse magnetic field components aberration rate at 15mm is-19.4%, vertical magnetic-field component
Aberration rate is-28.9%；Use in the tracks of permanent magnetism of mitered method (i.e. connected mode shown in Fig. 3),
When θ=30 °, above the air gap of tracks of permanent magnetism, the transverse magnetic field components aberration rate at 15mm is
-13.22%, vertical magnetic-field component aberration rate is-18.17%；Use bridging method (i.e. company shown in Fig. 4
Connect mode) tracks of permanent magnetism in, work as h1/h2=1:2 (such as, h1=10mm, h2=20mm) time,
Above the air gap of tracks of permanent magnetism, the transverse magnetic field components aberration rate at 15mm is-11.21%, vertical magnetic field
Component aberration rate is-17.98%.
According to the analysis to data above, relative to tracks of permanent magnetism of the prior art, in the present invention
Use mitered method tracks of permanent magnetism and use overlapping mode tracks of permanent magnetism, can improve significantly because of
The magnetic field bump caused for the air gap of the intersegmental existence of tracks of permanent magnetism.
It addition, the technical scheme is that and use conventional Halbach type tracks of permanent magnetism explanation, but this
Connected mode in the technical scheme of invention goes for the tracks of permanent magnetism array that any one is available,
This discusses the most one by one.
In summary, in the above-mentioned permanent magnetic guideway of the present invention, due in each permanent magnetic guideway section at least
One end is provided with connection end, and the adjacent connecting ends of the permanent magnetic guideway section of any two arranged adjacent is perpendicular
Nogata the most at least has the lap of preset area, therefore, it is possible to use have special shape forever
Magnetic guide rail section, forms the intersegmental different connected mode of tracks of permanent magnetism, such as, mitered, overlap joint etc. so that
After being arranged in order each permanent magnetic guideway section composition permanent magnetic guideway, the connection end that any two is adjacent exists
Can at least part of can overlap each other on vertical direction, thus reduce because tracks of permanent magnetism alignment error,
Former the thus resulting in such as expand with heat and contract with cold connects the air gap the most closely occurred between permanent magnetic guideway section, and makes to work as
Even if air gap occurs between two adjacent permanent magnetic guideway sections, the most always have permanent magnet below air gap or
Magnetic field is provided above person.Therefore, the permanent magnetic guideway being formed by connecting by above-mentioned special connected mode, can
To efficiently reduce because expand with heat and contract with cold, track installation error and the Magnetic field inhomogeneity of tracks of permanent magnetism that causes
Property, reduce the distortion of field caused due to air gap, improve the magnetic field homogeneity of track running direction, reduce
The electromagnetic resistance run, improves the magnetic caused due to Magnetic field inhomogeneity and floats car and run the phenomenons such as unstable.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. done, should be included in
Within the scope of protection of the invention.
Claims (6)
1. a permanent magnetic guideway, it is characterised in that described permanent magnetic guideway is by multiple permanent magnetic guideway being arranged in order
Section is put together；
Wherein, at least one end of each permanent magnetic guideway section is provided with connection end；
And the adjacent connecting ends in the vertical direction of the permanent magnetic guideway section of any two arranged adjacent at least has pre-
If the lap of area.
Permanent magnetic guideway the most according to claim 1, it is characterised in that:
The outer end of the adjacent connecting ends of the permanent magnetic guideway section of two arranged adjacent is inclined-plane.
Permanent magnetic guideway the most according to claim 2, it is characterised in that:
The size of the angle, θ on described inclined-plane is 30 °.
Permanent magnetic guideway the most according to claim 1, it is characterised in that:
The outer end of the adjacent connecting ends of the permanent magnetic guideway section of two arranged adjacent is provided with protuberance, and described prominent
Go out portion to be mutually lapped.
Permanent magnetic guideway the most according to claim 4, it is characterised in that:
The thickness of two adjacent protrusions is than for 1:2.
Permanent magnetic guideway the most according to claim 4, it is characterised in that:
The a length of 100mm of described protuberance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316355.0A CN105839483A (en) | 2016-05-12 | 2016-05-12 | Permanent magnetic guide rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610316355.0A CN105839483A (en) | 2016-05-12 | 2016-05-12 | Permanent magnetic guide rail |
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| Publication Number | Publication Date |
|---|---|
| CN105839483A true CN105839483A (en) | 2016-08-10 |
Family
ID=56591175
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610316355.0A Pending CN105839483A (en) | 2016-05-12 | 2016-05-12 | Permanent magnetic guide rail |
Country Status (1)
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107734732A (en) * | 2016-08-11 | 2018-02-23 | 佛山市顺德区美的电热电器制造有限公司 | Magnetic stripe structure, electromagnetic heating wire coil and cooking apparatus |
| CN113492686A (en) * | 2020-04-07 | 2021-10-12 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Suspension induction device |
| CN113652909A (en) * | 2021-09-24 | 2021-11-16 | 江西理工大学 | Magnetic suspension track and magnetic suspension system |
| CN113882197A (en) * | 2021-10-22 | 2022-01-04 | 中车工业研究院有限公司 | Permanent magnet magnetic suspension track, magnetic suspension mechanism and magnetic suspension train |
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| CN113882197A (en) * | 2021-10-22 | 2022-01-04 | 中车工业研究院有限公司 | Permanent magnet magnetic suspension track, magnetic suspension mechanism and magnetic suspension train |
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