CN116572752A - Permanent magnet electric suspension centering guide system - Google Patents
Permanent magnet electric suspension centering guide system Download PDFInfo
- Publication number
- CN116572752A CN116572752A CN202310837113.6A CN202310837113A CN116572752A CN 116572752 A CN116572752 A CN 116572752A CN 202310837113 A CN202310837113 A CN 202310837113A CN 116572752 A CN116572752 A CN 116572752A
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- hole
- permanent magnet
- guide system
- induction track
- centering guide
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- 239000000725 suspension Substances 0.000 title claims abstract description 40
- 230000006698 induction Effects 0.000 claims abstract description 44
- 238000005339 levitation Methods 0.000 claims description 14
- 230000005415 magnetization Effects 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
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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
- B60L13/06—Means to sense or control vehicle position or attitude with respect to railway
- B60L13/08—Means to sense or control vehicle position or attitude with respect to railway for the lateral position
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
-
- 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
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
The application provides a permanent magnet electric suspension centering guide system, which relates to the technical field of permanent magnet electric suspension systems and comprises an induction track and a suspension device, wherein through holes are formed in the induction track, the through holes comprise a first through hole and a second through hole, the first through hole and the second through hole are symmetrically arranged on two sides of the induction track, and the first through hole and the second through hole penetrate through the induction track; the suspension device comprises at least one permanent magnet, wherein two ends of the permanent magnet are positioned at two sides of an induction track, two adjacent permanent magnets are contacted with each other to form a permanent magnet array, the permanent magnet array is arranged above the induction track and is arranged in parallel with the induction track, and the permanent magnet array is arranged in the middle of the induction track.
Description
Technical Field
The application relates to the technical field of permanent magnet electric suspension systems, in particular to a permanent magnet electric suspension centering guide system.
Background
The permanent magnet electric suspension system has the advantages of simple structure, low cost, strong loading capacity and large suspension height, and is suitable for high-speed and ultra-high-speed operation scenes. However, the permanent magnet electric suspension system is a weak damping or zero damping system, and a small disturbance can make the system extremely unstable. In particular, during high speed operation, strong lateral gas turbulence and track irregularities pose a significant threat to the system. Therefore, the guiding function is realized to ensure the basis of safe and stable operation, in the prior art, the cross section of the rail is changed into an arc shape by changing the cross section shape of the rail, so that the rails on the left side and the right side form a U shape or a V shape, repulsive force generated by interaction of the permanent magnet and the induction rail is not vertical upwards any more, but is vertical to the surface of the rail, a certain inclination angle is generated between the permanent magnet and the vertical direction, and a transverse component force generated by suspension force inclination provides guiding force.
Disclosure of Invention
The application aims to provide a permanent magnet electric suspension centering guide system so as to solve the problems. In order to achieve the above purpose, the technical scheme adopted by the application is as follows:
the application provides a permanent magnet electric suspension centering guide system, which comprises: the device comprises an induction track and a suspension device, wherein a through hole is formed in the induction track, the through hole comprises a first through hole and a second through hole, the first through hole and the second through hole are symmetrically formed in two sides of the induction track, and the first through hole and the second through hole penetrate through the induction track; the suspension device is characterized in that the first through holes and the second through holes are symmetrically formed in two sides of the suspension device, the suspension device comprises at least one permanent magnet, two ends of the permanent magnet are located on two sides of the induction track, two adjacent permanent magnets are in contact with each other to form a permanent magnet array, the permanent magnet array is arranged above the induction track, the permanent magnet array is arranged in parallel with the induction track, and the permanent magnet array is arranged in the middle of the induction track.
Optionally, at least one first through hole is arranged along the running direction of the train, at least one second through hole is arranged along the running direction of the train, and the sizes of the first through hole and the second through hole are the same.
Optionally, the first through hole and the second through hole have the same shape, and the areas of the first through hole and the second through hole are the same.
Optionally, the lengths of the first through hole and the second through hole are smaller than the pole distance of the permanent magnet.
Optionally, a distance between two adjacent first through holes is 30mm-40mm.
Optionally, the width of the permanent magnet is larger than the interval between the first through hole and the second through hole.
Optionally, two ends of the permanent magnet are respectively covered above the first through hole and the second through hole.
Optionally, the area of the permanent magnet covered above the first through hole is the same as the area of the permanent magnet covered above the second through hole.
Optionally, the width of the permanent magnet array is smaller than the sum of the distance between the first through hole and the second through hole plus the width of the first through hole and the second through hole.
Alternatively, the difference in magnetization angle between two adjacent permanent magnets is 45 °.
The beneficial effects of the application are as follows:
according to the application, through holes are formed in the induction track, and the first through holes and the second through holes are symmetrically arranged at two sides of the suspension device, when the suspension device does not shift in centering operation, the first through holes or the second through holes can generate automatic restoring force to perform centering, so that the stability and safety of system operation are enhanced, meanwhile, the problem that the track needs to be processed with high precision and the problem of symmetry of suspension systems at two sides in the prior art are effectively solved by forming the through holes in the induction track, the difficulty of track laying and maintenance cost are reduced, and the train operation can be effectively prevented from tilting.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the embodiments of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic three-dimensional structure of a permanent magnet electric suspension centering guide system according to an embodiment of the present application.
Fig. 2 is a schematic diagram illustrating a centering operation of the permanent magnet electric suspension centering guide system according to an embodiment of the present application.
Fig. 3 is a graph showing the change of the guiding force (restoring force) with the offset according to the embodiment of the present application.
Fig. 4 is a graph showing a restoring force according to a distance between two adjacent first through holes according to an embodiment of the present application.
Fig. 5 is a graph of the lateral force analysis of the permanent magnet electric levitation centering guide system according to the embodiment of the application.
The marks in the figure: 1. sensing a track; 2. a first through hole; 3. a permanent magnet; 4. and a second through hole.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the application, as presented in the figures, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the present embodiment provides a permanent magnet electric levitation centering guide system, which includes: the device comprises an induction track 1 and a suspension device, wherein a through hole is formed in the induction track 1, the through hole comprises a first through hole 2 and a second through hole 4, the first through hole 2 and the second through hole 4 are symmetrically formed in two sides of the induction track 1, and the first through hole 2 and the second through hole 4 penetrate through the induction track 1; the suspension device is symmetrically provided with a first through hole 2 and a second through hole 4 on two sides, the suspension device comprises at least one permanent magnet 3, two ends of the permanent magnet 3 are positioned on two sides of an induction track 1, two adjacent permanent magnets 3 are contacted with each other to form a permanent magnet array, the permanent magnet array is arranged above the induction track 1 and is parallel to the induction track 1, the permanent magnet array is arranged in the middle of the induction track 1, the first through hole 2 and the second through hole 4 are symmetrically arranged on two sides of the suspension device, as shown in fig. 2, fig. 2 is a centering operation schematic diagram of a permanent magnet electric suspension centering guide system, when the suspension device is in centering operation, the suspension device interacts with the induction track 1 to realize a suspension function, in this case, the first through hole 2 and the second through hole 4 around two sides can generate induced vortex due to the change of magnetic flux, but due to the fact that the permanent magnets 3 are in a centering state, the induced current vectors on two sides are the same, no transverse force is generated, and thus centering operation is ensured; when the system is disturbed to integrally generate x negative direction deflection, the permanent magnet array is influenced by the first through holes 2 and the second through holes 4 distributed on the two sides of the induction track 1, the transverse acting force of the induction track 1 to the permanent magnet array is no longer zero, and the force along the x positive direction which hinders the system from deflection is expressed, so that the centering operation of the system is ensured by the guiding function, and therefore, the automatic restoring force can be generated to perform centering through the first through holes or the second through holes, the stability and the safety of the operation of the system are enhanced, meanwhile, the problem that the centering operation of the suspension device is limited in the prior art is solved by arranging the through holes on the induction track, the difficulty and the maintenance cost of track laying are reduced, and the inclination of the train operation can be effectively prevented.
The principle of the permanent magnet electric levitation technology is mainly based on Lenz's law, when a vehicle-mounted magnet moves above a fixed weak magnetic good conductor, a time-varying spatial magnetic field is generated, the conductor interacts with the time-varying magnetic field, induced current is generated in the conductor, and then an induced magnetic field is generated by ' electricity generated magnetism ' to block the change of a source magnetic field. Theoretically, this induced magnetic field is considered to be a mirror image of the source magnetic field in equal opposition. When the two magnetic fields are overlapped with each other in the air gap, a force capable of supporting the permanent magnet is called levitation force, and magnetic resistance for preventing the relative movement of the magnet and the conductor track is generated. In addition, since the lateral magnetic field of the magnet is uniformly distributed, when the vehicle body is laterally offset from the rail, a force that impedes the movement cannot be generated, that is, the vehicle body cannot travel in a direction limited by the rail, and the vehicle body does not have guiding capability. The application provides an automatic centering guiding force for a permanent magnet electric suspension technology by an opening hole technology on a track, as shown in fig. 3, and fig. 3 is a graph of guiding force (restoring force) changing along with offset.
In a specific embodiment of the present disclosure, at least one first through hole 2 is disposed along a train running direction, at least one second through hole 4 is disposed along the train running direction, the sizes of the first through hole 2 and the second through hole 4 are the same, the shapes of the first through hole 2 and the second through hole 4 are the same, the areas of the first through hole 2 and the second through hole 4 are the same, the shapes of the first through hole 2 and the second through hole 4 are not limited, and the first through hole 2 and the second through hole 4 are set to be the same shape and size, so as to provide a better centering guiding effect for the system.
In a specific embodiment of the disclosure, the lengths of the first through hole 2 and the second through hole 4 are smaller than the pole distance of the permanent magnet 3, so that the system can have a centering guiding effect when the suspension device is a single permanent magnet, and it is required to be noted that the running direction of the train along the induction track 1 is the length direction of the first through hole 2 and the second through hole 4.
In a specific embodiment of the present disclosure, the distance between two adjacent first through holes 2 is 30mm-40mm, as shown in fig. 4, fig. 4 is a graph of the change of restoring force with the distance between two adjacent first through holes 2, in which the guiding force between two adjacent first through holes 2 is changed from 20mm to 80mm and is increased first and then decreased when the width of the permanent magnet is 50mm, and the restoring force is maximum when the distance is 30mm-40mm, so that the centering guiding effect is best when the distance between two adjacent first through holes 2 is 30mm-40mm.
In a specific embodiment of the disclosure, the width of the permanent magnet 3 is larger than the distance between the first through hole 2 and the second through hole 4, two ends of the permanent magnet 3 are respectively covered above the first through hole 2 and the second through hole 4, the area of the permanent magnet 3 covered above the first through hole 2 is the same as the area of the permanent magnet 3 covered above the second through hole 4, so that eddy current on the induction track is symmetrically distributed on two sides, and centering operation of a suspension train can be ensured; when the area of the area covered by the permanent magnet 3 above the first through hole 2 is different from the area of the area covered by the permanent magnet 3 above the second through hole 4, the system is disturbed by the outside, the permanent magnet array is deviated, the overlapping area of the magnetic field of the deviated permanent magnet array on one side and the through hole is increased, the overlapping area of the magnetic field of the deviated permanent magnet array on one side and the through hole is reduced, the symmetrical balance of the induction track 1 is broken, the lateral force generated by the induction track on the permanent magnet array points to the deviated side, the whole system is represented as restoring force which hinders the deviation, and the guidance is realized, for example: as shown in fig. 5, when the permanent magnet array is offset in the X negative direction, d is the offset in the X negative direction, at this time, the balanced state of the eddy current distribution induced in the first through hole 2 and the second through hole 4 will break, the eddy current value on the offset side increases, and the other side decreases, so as to generate a restoring force along the X direction, and hinder the offset trend of the permanent magnet array, so that the area of the permanent magnet 3 covered above the first through hole 2 and the area of the permanent magnet 3 covered above the second through hole 4 tend to be the same again, so as to realize the centering operation of the levitation train.
In a specific embodiment of the present disclosure, the width of the permanent magnet array is smaller than the sum of the distance between the first through hole 2 and the second through hole 4 plus the width of the first through hole 2 and the second through hole 4, and when the width of the permanent magnet array is larger than the sum of the distance between the first through hole 2 and the second through hole 4 plus the width of the first through hole 2 and the second through hole 4, the train cannot realize the centering and guiding function, and it is to be noted that the direction perpendicular to the running direction of the train along the induction track 1 is the width direction of the first through hole 2 and the second through hole 4.
In a specific embodiment of the present disclosure, the magnetization angle difference between two adjacent permanent magnets 3 is 45 °, and when the magnetization angle difference between two adjacent permanent magnets 3 is 45 °, the permanent magnet electric suspension centering and guiding system has a better centering and guiding effect.
In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present application, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the application is subject to the protection scope of the claims.
Claims (10)
1. The utility model provides a permanent magnetism electronic suspension centering guidance system which characterized in that:
the induction track (1), the through hole has been seted up on the induction track (1), the through hole includes first through-hole (2) and second through-hole (4), first through-hole (2) with second through-hole (4) symmetry sets up in the both sides of induction track (1), first through-hole (2) with second through-hole (4) all run through induction track (1); and
the suspension device is characterized in that the first through holes (2) and the second through holes (4) are symmetrically formed in two sides of the suspension device, the suspension device comprises at least one permanent magnet (3), two ends of the permanent magnet (3) are located on two sides of the induction track (1), two adjacent permanent magnets (3) are contacted with each other to form a permanent magnet array, the permanent magnet array is arranged above the induction track (1), the permanent magnet array is parallel to the induction track (1), and the permanent magnet array is arranged in the middle of the induction track (1).
2. The permanent magnet electric levitation centering guide system of claim 1, wherein: at least one first through hole (2) is arranged along the running direction of the train, at least one second through hole (4) is arranged along the running direction of the train, and the sizes of the first through hole (2) and the second through hole (4) are the same.
3. The permanent magnet electric levitation centering guide system of claim 2, wherein: the first through hole (2) and the second through hole (4) are identical in shape, and the first through hole (2) and the second through hole (4) are identical in area.
4. The permanent magnet electric levitation centering guide system of claim 1, wherein: the lengths of the first through hole (2) and the second through hole (4) are smaller than the pole distance of the permanent magnet (3).
5. The permanent magnet electric levitation centering guide system of claim 1, wherein: the distance between two adjacent first through holes (2) is 30mm-40mm.
6. The permanent magnet electric levitation centering guide system of claim 1, wherein: the width of the permanent magnet (3) is larger than the interval between the first through hole (2) and the second through hole (4).
7. The permanent magnet electric levitation centering guide system of claim 1, wherein: the two ends of the permanent magnet (3) are respectively covered above the first through hole (2) and the second through hole (4).
8. The permanent magnet electric levitation centering guide system of claim 7, wherein: the area of the permanent magnet (3) covered above the first through hole (2) is the same as the area of the permanent magnet (3) covered above the second through hole (4).
9. The permanent magnet electric levitation centering guide system of claim 1, wherein: the width of the permanent magnet array is smaller than the sum of the distance between the first through hole (2) and the second through hole (4) plus the width of the first through hole (2) and the second through hole (4).
10. The permanent magnet electric levitation centering guide system of claim 1, wherein: the magnetization angle difference between two adjacent permanent magnets (3) is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310837113.6A CN116572752B (en) | 2023-07-10 | 2023-07-10 | Permanent magnet electric suspension centering guide system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310837113.6A CN116572752B (en) | 2023-07-10 | 2023-07-10 | Permanent magnet electric suspension centering guide system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116572752A true CN116572752A (en) | 2023-08-11 |
| CN116572752B CN116572752B (en) | 2023-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310837113.6A Active CN116572752B (en) | 2023-07-10 | 2023-07-10 | Permanent magnet electric suspension centering guide system |
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| 邓自刚;李海涛;: "高温超导磁悬浮车研究进展", 中国材料进展, no. 05, pages 13 - 18 * |
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