CN115182208A - Permanent magnet track and permanent magnet suspension system - Google Patents
Permanent magnet track and permanent magnet suspension system Download PDFInfo
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- CN115182208A CN115182208A CN202210931325.6A CN202210931325A CN115182208A CN 115182208 A CN115182208 A CN 115182208A CN 202210931325 A CN202210931325 A CN 202210931325A CN 115182208 A CN115182208 A CN 115182208A
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- 239000000725 suspension Substances 0.000 title abstract description 21
- 238000005339 levitation Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 4
- 238000009827 uniform distribution Methods 0.000 abstract 1
- 230000005415 magnetization Effects 0.000 description 5
- 230000005389 magnetism Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000002595 magnetic resonance imaging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/04—Magnetic suspension or levitation for vehicles
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- Power Engineering (AREA)
- Transportation (AREA)
- Linear Motors (AREA)
Abstract
The embodiment of the invention provides a permanent magnet track and a permanent magnet suspension system, and belongs to the technical field of permanent magnet suspension. The permanent magnet track includes: the permanent magnets are arranged in a seamless mode and are same in horizontal height to serve as the top surfaces of the permanent magnet tracks, the contact surfaces of two adjacent permanent magnets are provided with bulges or grooves, and the two adjacent permanent magnets are connected through the mutually matched bulges and grooves; the depth of the grooves is greater than the protrusion height of the protrusions, so that there is a fitting clearance between each groove and the contacted protrusion. The permanent magnet track and the permanent magnet suspension system have the advantages of simple structure, convenience in installation, capability of reducing the vertical error of the permanent magnet track, ensuring the flatness of the track, more uniform distribution of a magnetic field formed on the surface of the permanent magnet track, reduction of the resistance and vibration of a magnetic suspension train body, improvement of the running stability of the magnetic suspension train and improvement of the service life of the permanent magnet track.
Description
Technical Field
The invention relates to the technical field of permanent magnet suspension, in particular to a permanent magnet track and a permanent magnet suspension system.
Background
The permanent magnet track provides a stable magnetic field in a magnetic suspension system, is one of main components of the whole magnetic suspension system, and generally exists in two systems of superconducting magnetic suspension and permanent magnet suspension. The superconducting magnetic suspension has the advantages of simplicity in control, self-stability, low resistance and the like by virtue of the magnetic flux pinning characteristic, and the permanent magnetic suspension also has the advantages of non-contact traction, energy conservation, environmental protection, low noise and the like.
In order to obtain a uniformly distributed and unilateral enhanced magnetic field, the permanent magnet tracks are all formed by a plurality of permanent magnet (permanent magnetic material) arrays with standard rectangular sections, the permanent magnets have fixed magnetization directions in certain specific array structures, and the magnetization directions of the permanent magnets can be horizontal magnetization directions (leftwards or rightwards), vertical magnetization directions (upwards or downwards) and magnetization directions of any angle.
In the existing magnetic suspension system, the manufacturing cost and the installation cost of the permanent magnet track account for 20% -30% of the cost of the whole system, and how to fully utilize the magnetism of the permanent magnet track is of great importance. However, in the practical engineering application process, as shown in fig. 1 and fig. 2, because the magnetic track screw hole and the bolt are in a clearance assembly relationship, and the vertical positioning reference of the permanent magnet is difficult to ensure uniformity, these errors may cause a part of the permanent magnet to deviate in the vertical direction (z axis), which may further cause unevenness of the geometric surface of the magnetic track, affect the uniformity of magnetic field distribution, and finally affect the operation effect of the train, and generate vehicle body vibration; the permanent magnets are connected in the manner of oblique connection and tower connection as shown in fig. 3 and 4, so that the magnetic field uniformity in the running direction can be improved, the stability of a vehicle body is improved, but the vertical direction (z axis) of the permanent magnets is not limited actually, the permanent magnets still can vertically shift, and further the magnetic field nonuniformity can be caused, and in addition, the stress of the permanent magnets subjected to oblique connection and tower connection in the vertical direction is nonuniform, so that the permanent magnets are easily subjected to extrusion fracture.
Disclosure of Invention
The invention aims to provide a permanent magnet rail and a permanent magnet suspension system, which are used for solving the problems that the vertical positioning reference of permanent magnets is difficult to ensure uniformity by adopting the gap assembly of a screw hole of a magnetic track and a bolt, partial permanent magnets deviate in the vertical direction (z axis), further the geometric surface of the magnetic track is uneven, the uniformity of magnetic field distribution is influenced, the running effect of a train is finally influenced, and the vibration of a train body is generated, and the problems that the permanent magnets are connected in an oblique connection and tower connection mode, the permanent magnets still deviate vertically, further the magnetic field is uneven, the stress of the permanent magnets in the oblique connection and tower connection mode is uneven in the vertical direction, and the permanent magnets are easy to be extruded and broken.
In order to achieve the above object, an embodiment of the present invention provides a permanent magnet track, including:
the permanent magnets are arranged in a seamless mode and are same in horizontal height to serve as the top surfaces of the permanent magnet tracks, the contact surfaces of two adjacent permanent magnets are provided with bulges or grooves, and the two adjacent permanent magnets are connected through the mutually matched bulges and grooves;
the depth of the grooves is greater than the protrusion height of the protrusions, so that there is a fitting clearance between each groove and the contacted protrusion.
Optionally, the number of the permanent magnets is five, and the permanent magnets are arranged in a halbach array.
Optionally, the plurality of permanent magnets arranged seamlessly includes:
the first edge permanent magnet, the plurality of first middle permanent magnets and the second edge permanent magnet are sequentially arranged and connected;
a groove is formed in the end face, in contact with the first middle permanent magnet, of the first edge permanent magnet, and a protrusion is formed in the end face, in contact with the first edge permanent magnet, of the first middle permanent magnet;
the end face, in contact with the first middle permanent magnet, of the second edge permanent magnet is provided with a protrusion, and the end face, in contact with the second edge permanent magnet, of the first middle permanent magnet is provided with a groove.
Optionally, the plurality of permanent magnets arranged seamlessly includes:
the first edge permanent magnet, the plurality of first middle permanent magnets and the second edge permanent magnet are sequentially arranged and connected;
the end face of the first edge permanent magnet, which is in contact with the first middle permanent magnet, is provided with a bulge, and the end face of the first middle permanent magnet, which is in contact with the first edge permanent magnet, is provided with a groove;
the end face, in contact with the first middle permanent magnet, of the second edge permanent magnet is provided with a groove, and the end face, in contact with the second edge permanent magnet, of the first middle permanent magnet is provided with a protrusion.
Optionally, the plurality of permanent magnets arranged seamlessly includes:
the permanent magnet type magnetic resonance imaging device comprises a first edge permanent magnet, a middle permanent magnet group and a second edge permanent magnet which are sequentially connected, wherein the middle permanent magnet group comprises a plurality of second middle permanent magnets and third middle permanent magnets which are alternately arranged, the number of the second middle permanent magnets is n, and the number of the third middle permanent magnets is n-1;
the end face of the first edge permanent magnet, which is in contact with the second middle permanent magnet, is provided with a groove, and the end faces of the second middle permanent magnet, which are in contact with the first edge permanent magnet and the third middle permanent magnet, are provided with bulges;
grooves are formed in the end faces, which are in contact with the second middle permanent magnet, of the third middle permanent magnet;
the end face, in contact with the second middle permanent magnet, of the second edge permanent magnet is provided with a groove, and the end face, in contact with the second edge permanent magnet, of the second middle permanent magnet is provided with a protrusion.
Optionally, the plurality of permanent magnets arranged seamlessly includes:
the permanent magnet type permanent magnet synchronous motor comprises a first edge permanent magnet, a middle permanent magnet group and a second edge permanent magnet which are sequentially arranged and connected, wherein the middle permanent magnet group comprises a plurality of second middle permanent magnets and third middle permanent magnets which are alternately arranged, the number of the second middle permanent magnets is n, and the number of the third middle permanent magnets is n-1;
the end face of the first edge permanent magnet, which is in contact with the second middle permanent magnet, is provided with a bulge, and the end face of the second middle permanent magnet, which is in contact with the first edge permanent magnet and the third middle permanent magnet, is provided with a groove;
the end surfaces of the third middle permanent magnets, which are in contact with the second middle permanent magnets, are provided with bulges;
the end face, in contact with the second middle permanent magnet, of the second edge permanent magnet is provided with a protrusion, and the end face, in contact with the second edge permanent magnet, of the second middle permanent magnet is provided with a groove.
Optionally, the length of each of the groove and the protrusion in the horizontal direction is smaller than the length of the permanent magnet in the horizontal direction.
Optionally, the shape of the groove and the shape of the protrusion are cuboids.
Optionally, the grooves and the protrusions are trapezoidal in shape.
The embodiment of the invention also provides a magnetic suspension system, which comprises a magnetic suspension train and the permanent magnet track.
This technical scheme passes through recess and protruding adjacent permanent magnet of connection to be provided with the fit-up gap at recess and arch, simple structure, the installation of being convenient for can reduce the orbital vertical error of permanent magnetism, guarantees orbital roughness, makes the orbital surface of permanent magnetism form the magnetic field distribution more even, reduces maglev train automobile body resistance and vibration, improves maglev train operating stability, can also improve the orbital life of permanent magnetism.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a permanent magnet track connected by a bolt hole and a bolt in the prior art provided by the invention;
FIG. 2 is a schematic cross-sectional view of a prior art permanent magnet track using threaded holes and bolts according to the present invention;
FIG. 3 is a schematic cross-sectional view of a prior art permanent magnet track using miter joints according to the present invention;
FIG. 4 is a schematic cross-sectional view of a prior art permanent magnet track using tower-type joints provided by the present invention;
FIG. 5 is a schematic cross-sectional view of a permanent magnet track according to example 1 of the present invention;
FIG. 6 is a schematic cross-sectional view of a permanent magnet track according to example 2 of the present invention;
FIG. 7 is a schematic cross-sectional view of a permanent magnet track according to embodiment 3 of the present invention;
FIG. 8 is a schematic cross-sectional view of a permanent magnet track according to example 4 of the present invention;
FIG. 9 is a schematic cross-sectional view of a permanent magnet track according to example 5 of the present invention;
fig. 10 is a schematic cross-sectional view of a permanent magnet track in example 6 provided by the present invention.
Description of the reference numerals
1-a permanent magnet; 3-assembly clearance; 11-a first edge permanent magnet;
12-a first intermediate permanent magnet; 13-a second edge permanent magnet; 14-a middle permanent magnet group;
21-bulge; 22-a groove; 141-a second intermediate permanent magnet;
142-third intermediate permanent magnet.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
In the embodiments of the present invention, unless otherwise specified, the use of the directional terms such as "upper, lower, left, and right" generally refer to the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are usually placed when in use.
The terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
The terms "parallel", "perpendicular", etc. do not require that the components be absolutely parallel or perpendicular, but may be slightly inclined. For example, "parallel" merely means that the directions are more parallel relative to "perpendicular," and does not mean that the structures are necessarily perfectly parallel, but may be slightly tilted.
The terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal, vertical or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
Furthermore, the terms "substantially", "essentially", and the like are intended to indicate that the relative terms are not required to be absolutely exact, but may have some deviation. For example: "substantially equal" does not mean absolute equality, but it is difficult to achieve absolute equality in actual production and operation, and certain deviations generally exist. Thus, in addition to absolute equality, "substantially equal" also includes the above-described case where there is some deviation. In this case, unless otherwise specified, terms such as "substantially", and the like are used in a similar manner to those described above.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 1 is a schematic structural diagram of a permanent magnet track connected by a bolt hole and a bolt in the prior art provided by the invention; FIG. 2 is a schematic cross-sectional view of a prior art permanent magnet track using threaded holes and bolts according to the present invention; FIG. 3 is a schematic cross-sectional view of a prior art permanent magnet track using miter joints according to the present invention; FIG. 4 is a schematic cross-sectional view of a prior art permanent magnet track using a tower joint according to the present invention; fig. 5 is a schematic cross-sectional view of a permanent magnet track according to embodiment 1 of the present invention; FIG. 6 is a schematic cross-sectional view of a permanent magnet track according to example 2 of the present invention; FIG. 7 is a schematic cross-sectional view of a permanent magnet track according to embodiment 3 of the present invention; FIG. 8 is a schematic sectional view of a permanent magnet track according to embodiment 4 of the present invention; FIG. 9 is a schematic cross-sectional view of a permanent magnet track according to example 5 of the present invention; fig. 10 is a schematic cross-sectional view of a permanent magnet track in example 6 provided by the present invention.
As shown in fig. 1-2, the prior art permanent magnet track is constructed by: through the bolt 41 of the whole permanent magnet track, the magnetic track upper surface 42 without vertical deviation (z axis), the magnetic track upper surface 43 with vertical deviation, the initial assembly gap 44 of the magnetic track screw hole and the bolt, because the local magnetic block has vertical deviation, the geometric surface of the magnetic track will become uneven, so that the assembly gap is not on the same horizontal line, the assembly gap 45 with dislocation can occur, and meanwhile, relative deviation can be generated at the position below 46 of the deviated permanent magnet. The magnetic track screw hole and the bolt are assembled in a clearance mode, the vertical positioning reference of the permanent magnet is difficult to guarantee to be uniform, and partial permanent magnet deviates in the vertical direction (z axis), so that the unevenness of the geometric surface of the magnetic track is caused, the uniformity of magnetic field distribution is influenced, the operation effect of a train is finally influenced, and the problem of vehicle body vibration is caused.
As shown in fig. 3-4, in another embodiment of the prior art, the permanent magnets of the permanent magnet tracks are connected by using an inclined end or a step, and the permanent magnets are connected by using an oblique joint and a tower joint, the permanent magnets still vertically shift, which may cause non-uniformity of the magnetic field, and the force applied to the oblique joint and tower joint permanent magnets in the vertical direction is non-uniform, which may cause the permanent magnets to easily crush and break, resulting in damage to the permanent magnet tracks.
As shown in fig. 5-10, the present embodiment provides a permanent magnet track, comprising:
the permanent magnets 1 are arranged seamlessly, the horizontal heights of the permanent magnets 1 are the same, the permanent magnets serve as the top surfaces of the permanent magnet rails, protrusions 21 or grooves 22 are arranged on the contact surfaces of two adjacent permanent magnets 1, and the two adjacent permanent magnets 1 are connected through the protrusions 21 and the grooves 22 which are matched with each other;
the depth of the grooves 22 is greater than the protruding height of the protrusions 21 so that each groove 22 has a fitting gap 3 with the contacting protrusion 21.
Specifically, after the permanent magnet track is formed by connecting and assembling the protrusions 21 and the grooves 22 between the plurality of permanent magnets 1, the protrusions 21 and the grooves 22 between each two adjacent permanent magnets 1 are in contact with each other, but since the depth of the grooves 22 is greater than the protruding height of the protrusions 21, so that the assembling gaps 3 are formed between the grooves 22 and the protrusions 21, the assembling gaps 3 are arranged to prevent the permanent magnets 1 from being damaged when the permanent magnets 1 are slightly deformed. The corresponding protrusion 21 and/or the corresponding groove 22 arranged on the permanent magnet 1 and the permanent magnet are in an integrated structure so as to enhance the structural strength.
In another embodiment, the permanent magnet track further comprises: a mounting fixture for holding and fixed permanent magnet, mounting fixture's width is confirmed by the quantity of permanent magnet, and mounting fixture includes two bellied sides, and the permanent magnet arranges in proper order to be fixed in the accommodation space between two sides to through the limiting displacement of the protruding 21 and recess 22 and two bellied sides that set up between two adjacent permanent magnets 1, realize the fixed of permanent magnet 1, guarantee the roughness of permanent magnet orbital top surface.
Preferably, only one recess 22 or one protrusion 21 is provided on the contact surface of each adjacent permanent magnet 1. In another embodiment, a groove 22 and a protrusion 21 may be disposed on the contact surface of each adjacent permanent magnet 1, and the groove 22 on the permanent magnet 1 matches with the protrusion 21 on the corresponding adjacent pair of permanent magnets 1, and the protrusion 21 on the permanent magnet 1 matches with the groove 22 on the corresponding adjacent pair of permanent magnets 1, so as to achieve a more stable connection.
Further, the number of the permanent magnets 1 is five, and the permanent magnets 1 are arranged in a Halbach array.
Specifically, the number of permanent magnets 1 may be set to 2n + 1. Preferably, the quantity of permanent magnet 1 sets up to 5 in this embodiment, and adopts halbach array to arrange, can show the magnetic field intensity that strengthens permanent magnet track upper surface, improves the utilization ratio of permanent magnet, and can guarantee that the magnetic field distribution of permanent magnet track upper surface is even, and is more stable.
Further, the plurality of permanent magnets 1 arranged seamlessly include:
the first edge permanent magnet 11, the plurality of first middle permanent magnets 12 and the second edge permanent magnet 13 are sequentially arranged and connected;
a groove 22 is formed in the end face, in contact with the first middle permanent magnet 12, of the first edge permanent magnet 11, and a protrusion 21 is formed in the end face, in contact with the first edge permanent magnet 11, of the first middle permanent magnet 12;
the end face, in contact with the first middle permanent magnet 12, of the second edge permanent magnet 13 is provided with a protrusion 21, and the end face, in contact with the second edge permanent magnet 13, of the first middle permanent magnet 12 is provided with a groove 22.
Further, the plurality of permanent magnets 1 arranged seamlessly include:
the first edge permanent magnet 11, the plurality of first middle permanent magnets 12 and the second edge permanent magnet 13 are sequentially arranged and connected;
a protrusion 21 is arranged on the end surface of the first edge permanent magnet 11, which is in contact with the first middle permanent magnet 12, and a groove 22 is arranged on the end surface of the first middle permanent magnet 12, which is in contact with the first edge permanent magnet 11;
the end face, in contact with the first middle permanent magnet 12, of the second edge permanent magnet 13 is provided with a groove 22, and the end face, in contact with the second edge permanent magnet 13, of the first middle permanent magnet 12 is provided with a protrusion 21.
Further, the plurality of permanent magnets 1 arranged seamlessly include:
the first edge permanent magnet 11, the middle permanent magnet group 14 and the second edge permanent magnet 13 are sequentially connected in an arrayed manner, the middle permanent magnet group 14 comprises a plurality of second middle permanent magnets 141 and third middle permanent magnets 142 which are alternately arrayed, the number of the second middle permanent magnets 141 is n, and the number of the third middle permanent magnets 142 is n-1;
a groove 22 is formed in the end face of the first edge permanent magnet 11, which is in contact with the second middle permanent magnet 141, and protrusions 21 are formed in the end faces of the second middle permanent magnet 141, which are in contact with the first edge permanent magnet 11 and the third middle permanent magnet 142;
a groove 22 is formed in the end face, in contact with the second middle permanent magnet 141, of the second edge permanent magnet 13, and a protrusion 21 is formed in the end face, in contact with the second edge permanent magnet 13, of the second middle permanent magnet 141.
Further, the plurality of permanent magnets 1 arranged seamlessly include:
the edge permanent magnets 11, the middle permanent magnet groups 102 and the second edge permanent magnets 13 are sequentially arranged and connected, the middle permanent magnet group 102 comprises a plurality of second middle permanent magnets 141 and third middle permanent magnets 142 which are alternately arranged, the number of the second middle permanent magnets 141 is n, and the number of the third middle permanent magnets 142 is n-1;
a protrusion 21 is arranged on the end face of the first edge permanent magnet 11, which is in contact with the second middle permanent magnet 141, and grooves 22 are arranged on the end faces of the second middle permanent magnet 141, which are in contact with the first edge permanent magnet 11 and the third middle permanent magnet 142;
the end surfaces of the third middle permanent magnets 142, which are in contact with the second middle permanent magnets 141, are provided with protrusions 21;
the end face, in contact with the second middle permanent magnet 141, of the second edge permanent magnet 13 is provided with a protrusion 21, and the end face, in contact with the second edge permanent magnet 13, of the second middle permanent magnet 141 is provided with a groove 22.
Further, the length of the groove 22 and the protrusion 21 in the horizontal direction is smaller than that of the permanent magnet 1 in which the groove and the protrusion are located in the horizontal direction.
Specifically, the groove 22 and the protrusion 21 are arranged on the side surface of the permanent magnet 1, the length of the arranged groove 22 and the arranged protrusion 21 in the horizontal direction is smaller than the length of the whole permanent magnet, and the length of the arranged groove 22 and the arranged protrusion 21 in the height direction is smaller than the length of the whole permanent magnet, so that the groove 22 and the protrusion 21 are positioned in the center of the side surface of the permanent magnet 1 to enhance the structural strength of the whole.
In another embodiment, the length of the groove 22 and the protrusion 21 in the horizontal direction is equal to the length of the whole permanent magnet, and in this case, the groove 22 is a side surface penetrating the corresponding permanent magnet 1.
Further, the shape of the groove 22 and the protrusion 21 is a rectangular parallelepiped; the grooves 22 and the protrusions 21 are trapezoidal in shape.
Specifically, the shapes of the groove 22 and the protrusion 21 may be set to be rectangular parallelepiped, trapezoid, etc., and preferably, an axisymmetric shape such as a cube, an isosceles trapezoid, etc., may be adopted to ensure that the stress distribution at the contact position is uniform.
The embodiment of the invention also provides a permanent magnet suspension system which comprises a magnetic suspension train and the permanent magnet track.
Example 1
As shown in fig. 5, in this embodiment, a permanent magnet track is formed by closely arranging five permanent magnets 1, a halbach array is adopted between the permanent magnets 1, the shapes of the protrusions 21 and the grooves 22 are both rectangular solids, and the first middle permanent magnet 12 has a structure in which one side surface is provided with the protrusions 21, and the other opposite side surface is provided with the grooves 22. And the permanent magnet located at the leftmost side is a first edge permanent magnet 11, the permanent magnet located at the rightmost side is a second edge permanent magnet 13, three permanent magnets between the first edge permanent magnet 11 and the second edge permanent magnet 13 are first middle permanent magnets 12, a groove 22 is formed in the contact end surfaces of the first edge permanent magnet 11 and the first middle permanent magnet 12 located at the leftmost side, a protrusion 21 is formed in the contact end surface of the corresponding first middle permanent magnet 12 located at the leftmost side and the first edge permanent magnet 11, a groove 22 is formed in the other opposite side surface, a protrusion 21 is formed in the contact end surface of the second edge permanent magnet 13 and the corresponding first middle permanent magnet 12 located at the right side, a groove 22 is formed in the contact end surface of the first middle permanent magnet 12 and the second edge permanent magnet 13, and therefore mutual matching and fixing among the five permanent magnets 1 are achieved through the protrusion 21 and the groove 22.
Example 2
As shown in fig. 6, in this embodiment, a permanent magnet track is formed by tightly arranging five permanent magnets 1, a halbach array is adopted between the permanent magnets 1, both the protrusions 21 and the grooves 22 are rectangular, and the first middle permanent magnet 12 is of a structure in which the protrusion 21 is arranged on one side surface and the groove 22 is arranged on the other opposite side surface. The permanent magnet located at the leftmost side is a first edge permanent magnet 11, the permanent magnet located at the rightmost side is a second edge permanent magnet 13, three permanent magnets between the first edge permanent magnet 11 and the second edge permanent magnet 13 are first middle permanent magnets 12, a protrusion 21 is arranged on the contact end surfaces of the first edge permanent magnet 11 and the first middle permanent magnet 12 located at the leftmost side, a groove 22 is arranged on the contact end surface of the corresponding first middle permanent magnet 12 located at the leftmost side and the first edge permanent magnet 11, a protrusion 21 is arranged on the other opposite side surface, a groove 22 is arranged on the contact end surfaces of the second edge permanent magnet 13 and the first middle permanent magnet 12 located at the corresponding right side, a protrusion 21 is arranged on the contact end surface of the first middle permanent magnet 12 at the right side and the second edge permanent magnet 13, and therefore mutual matching and fixing among the five permanent magnets 1 are achieved through the protrusion 21 and the groove 22.
Example 3
As shown in fig. 7, in this embodiment, a permanent magnet track is formed by closely arranging five permanent magnets 1, a halbach array is adopted between the permanent magnets 1, the shapes of the protrusions 21 and the grooves 22 are isosceles trapezoids, and the first middle permanent magnet 12 is of a structure in which the protrusion 21 is arranged on one side surface and the groove 22 is arranged on the other opposite side surface. The permanent magnet located at the leftmost side is a first edge permanent magnet 11, the permanent magnet located at the rightmost side is a second edge permanent magnet 13, three permanent magnets between the first edge permanent magnet 11 and the second edge permanent magnet 13 are first middle permanent magnets 12, a groove 22 is formed in the contact end faces of the first edge permanent magnet 11 and the first middle permanent magnet 12 located at the leftmost side, a protrusion 21 is formed in the contact end faces of the corresponding first middle permanent magnet 12 located at the leftmost side and the first edge permanent magnet 11, a groove 22 is formed in the other opposite side face, a protrusion 21 is formed in the contact end faces of the second edge permanent magnet 13 and the first middle permanent magnet 12 located at the corresponding right side, a groove 22 is formed in the contact end faces of the first middle permanent magnet 12 located at the right side and the second edge permanent magnet 13, and therefore mutual matching and fixing among the five permanent magnets 1 are achieved through the protrusion 21 and the groove 22.
Example 4
As shown in fig. 8, in this embodiment, a permanent magnet track is formed by closely arranging five permanent magnets 1, a halbach array is used between the permanent magnets 1, the shapes of the protrusions 21 and the grooves 22 are isosceles trapezoids, and the positions of the ground and the top surfaces of the isosceles trapezoids are opposite to those in embodiment 3, and by adopting the shape structure in this embodiment, the length of the groove 22 and the length of the permanent magnet 1 need to be set to be the same, that is, the groove 22 is a penetrating groove on the corresponding permanent magnet 1, so as to facilitate installation, the first middle permanent magnets 12 are all structures in which one side surface is provided with the protrusion 21, and the other opposite side surface is provided with the groove 22. The permanent magnet located at the leftmost side is a first edge permanent magnet 11, the permanent magnet located at the rightmost side is a second edge permanent magnet 13, three permanent magnets between the first edge permanent magnet 11 and the second edge permanent magnet 13 are first middle permanent magnets 12, a groove 22 is formed in the contact end faces of the first edge permanent magnet 11 and the first middle permanent magnet 12 located at the leftmost side, a protrusion 21 is formed in the contact end faces of the corresponding first middle permanent magnet 12 located at the leftmost side and the first edge permanent magnet 11, a groove 22 is formed in the other opposite side face, a protrusion 21 is formed in the contact end faces of the second edge permanent magnet 13 and the first middle permanent magnet 12 located at the corresponding right side, a groove 22 is formed in the contact end faces of the first middle permanent magnet 12 located at the right side and the second edge permanent magnet 13, and therefore mutual matching and fixing among the five permanent magnets 1 are achieved through the protrusion 21 and the groove 22.
Example 5
As shown in fig. 9, in this embodiment, a permanent magnet track is formed by closely arranging five permanent magnets 1, a halbach array is adopted between the permanent magnets 1, the protrusions 21 and the grooves 22 are both isosceles trapezoidal bodies, in this embodiment, the middle permanent magnet group 14 includes a plurality of second middle permanent magnets 141 and third middle permanent magnets 142 which are alternately arranged, the number of the second middle permanent magnets 141 is 2, the number of the third middle permanent magnets 142 is 1, the protrusions 21 are disposed on two side surfaces of the second middle permanent magnets 141, and the grooves 22 are disposed on two side surfaces of the third middle permanent magnets 142. The permanent magnet located at the leftmost side is a first edge permanent magnet 11, the permanent magnet located at the rightmost side is a second edge permanent magnet 13, and three permanent magnets between the first edge permanent magnet 11 and the second edge permanent magnet 13 are respectively: the contact end surfaces of the first edge permanent magnet 11 and the second middle permanent magnet 141 on the left side are provided with grooves 22, the contact end surfaces of the second edge permanent magnet 13 and the corresponding second middle permanent magnet 141 on the right side are provided with grooves 22, and therefore mutual matching and fixing of the five permanent magnets 1 are achieved through the protrusions 21 and the grooves 22.
Example 6
As shown in fig. 10, in this embodiment, a permanent magnet track is formed by closely arranging five permanent magnets 1, a halbach array is adopted between the permanent magnets 1, the shapes of the protrusions 21 and the grooves 22 are both isosceles trapezoids, in this embodiment, the middle permanent magnet group 14 includes a plurality of second middle permanent magnets 141 and third middle permanent magnets 142 which are alternately arranged, the number of the second middle permanent magnets 141 is 2, the number of the third middle permanent magnets 142 is 1, the grooves 22 are respectively disposed on two side surfaces of the second middle permanent magnets 141, and the protrusions 21 are respectively disposed on two side surfaces of the third middle permanent magnets 142. The permanent magnet located at the leftmost side is a first edge permanent magnet 11, the permanent magnet located at the rightmost side is a second edge permanent magnet 13, and three permanent magnets between the first edge permanent magnet 11 and the second edge permanent magnet 13 are respectively: the contact end surfaces of the first edge permanent magnet 11 and the second middle permanent magnet 141 on the left side are provided with protrusions 21, the contact end surfaces of the second edge permanent magnet 13 and the corresponding second middle permanent magnet 141 on the right side are provided with protrusions 21, and therefore mutual matching and fixing of the five permanent magnets 1 are achieved through the protrusions 21 and the grooves 22.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the foregoing embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. A permanent magnet track, comprising:
the permanent magnets (1) are arranged seamlessly, the horizontal heights of the permanent magnets (1) are the same and are used as the top surfaces of the permanent magnet tracks, the contact surfaces of two adjacent permanent magnets (1) are provided with protrusions (21) or grooves (22), and the two adjacent permanent magnets (1) are connected through the protrusions (21) and the grooves (22) which are matched with each other;
the depth of the grooves (22) is greater than the projection height of the protrusions (21) so that each groove (22) has a fitting clearance (3) with the protrusion (21) in contact.
2. The permanent magnet rail according to claim 1, characterized in that the number of permanent magnets (1) is five, and the permanent magnets (1) are arranged in a Halbach array.
3. The permanent magnet track according to claim 1, characterized in that the seamlessly arranged plurality of permanent magnets (1) comprises:
the permanent magnet comprises a first edge permanent magnet (11), a plurality of first middle permanent magnets (12) and a second edge permanent magnet (13) which are sequentially connected in an arrayed manner;
a groove (22) is formed in the end face, in contact with the first middle permanent magnet (12), of the first edge permanent magnet (11), and a protrusion (21) is formed in the end face, in contact with the first edge permanent magnet (11), of the first middle permanent magnet (12);
the end face, contacted with the first middle permanent magnet (12), of the second edge permanent magnet (13) is provided with a bulge (21), and the end face, contacted with the second edge permanent magnet (13), of the first middle permanent magnet (12) is provided with a groove (22).
4. The permanent magnet track according to claim 1, characterized in that the seamlessly arranged plurality of permanent magnets (1) comprises:
the permanent magnet type permanent magnet motor comprises a first edge permanent magnet (11), a plurality of first middle permanent magnets (12) and a second edge permanent magnet (13) which are sequentially connected in an arrangement manner;
a protrusion (21) is arranged on the end face, in contact with the first middle permanent magnet (12), of the first edge permanent magnet (11), and a groove (22) is arranged on the end face, in contact with the first edge permanent magnet (11), of the first middle permanent magnet (12);
the end face, contacted with the first middle permanent magnet (12), of the second edge permanent magnet (13) is provided with a groove (22), and the end face, contacted with the second edge permanent magnet (13), of the first middle permanent magnet (12) is provided with a bulge (21).
5. The permanent magnet track according to claim 1, characterized in that the seamlessly arranged plurality of permanent magnets (1) comprises:
the edge permanent magnets are sequentially connected with one another in an arrayed mode, and each edge permanent magnet (11), each middle permanent magnet group (14) and each second edge permanent magnet (13) are sequentially connected in an arrayed mode, each middle permanent magnet group (14) comprises a plurality of second middle permanent magnets (141) and a plurality of third middle permanent magnets (142) which are alternately arrayed, the number of the second middle permanent magnets (141) is n, and the number of the third middle permanent magnets (142) is n-1;
a groove (22) is formed in the end face, in contact with the second middle permanent magnet (141), of the first edge permanent magnet (11), and protrusions (21) are formed in the end faces, in contact with the first edge permanent magnet (11) and the third middle permanent magnet (142), of the second middle permanent magnet (141);
grooves (22) are formed in the end faces, which are in contact with the second middle permanent magnet (141), of the third middle permanent magnet (142);
the end face, contacted with the second middle permanent magnet (141), of the second edge permanent magnet (13) is provided with a groove (22), and the end face, contacted with the second edge permanent magnet (13), of the second middle permanent magnet (141) is provided with a protrusion (21).
6. The permanent magnet track according to claim 1, characterized in that the seamlessly arranged plurality of permanent magnets (1) comprises:
the edge permanent magnet type permanent magnet generator comprises a first edge permanent magnet (11), a middle permanent magnet group (102) and a second edge permanent magnet (13) which are sequentially connected in an arrayed manner, wherein the middle permanent magnet group (102) comprises a plurality of second middle permanent magnets (141) and third middle permanent magnets (142) which are alternately arrayed with each other, the number of the second middle permanent magnets (141) is n, and the number of the third middle permanent magnets (142) is n-1;
the end face of the first edge permanent magnet (11) which is in contact with the second middle permanent magnet (141) is provided with a protrusion (21), and the end faces of the second middle permanent magnet (141) which are in contact with the first edge permanent magnet (11) and the third middle permanent magnet (142) are provided with grooves (22);
the end surfaces of the third middle permanent magnets (142) which are in contact with the second middle permanent magnet (141) are provided with bulges (21);
the end face, contacted with the second middle permanent magnet (141), of the second edge permanent magnet (13) is provided with a protrusion (21), and the end face, contacted with the second edge permanent magnet (13), of the second middle permanent magnet (141) is provided with a groove (22).
7. The permanent magnet rail according to claim 1, characterized in that the length of the groove (22) and the protrusion (21) in the horizontal direction is smaller than the length of the permanent magnet (1) in which they are located in the horizontal direction.
8. Permanent magnet rail according to claim 1, characterized in that the grooves (22) and the protrusions (21) are shaped as cuboids.
9. Permanent magnet rail according to claim 1, characterized in that the grooves (22) and the protrusions (21) are shaped as trapezoids.
10. A permanent magnet levitation system comprising a maglev train and a permanent magnet track as claimed in any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210931325.6A CN115182208A (en) | 2022-08-04 | 2022-08-04 | Permanent magnet track and permanent magnet suspension system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210931325.6A CN115182208A (en) | 2022-08-04 | 2022-08-04 | Permanent magnet track and permanent magnet suspension system |
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| Publication Number | Publication Date |
|---|---|
| CN115182208A true CN115182208A (en) | 2022-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210931325.6A Pending CN115182208A (en) | 2022-08-04 | 2022-08-04 | Permanent magnet track and permanent magnet suspension system |
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| CN (1) | CN115182208A (en) |
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| CN2177745Y (en) * | 1993-11-24 | 1994-09-21 | 朱好平 | Bearing uniform non-vibration rail joint |
| CN2391904Y (en) * | 1999-10-10 | 2000-08-16 | 袁春刚 | Tenon shaped steel rail ends |
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