Magnetic track module, composite permanent magnetic track and method of mounting same

Abstract

The application relates to the technical field of permanent magnetic tracks, and discloses a magnetic track module, a composite permanent magnetic track and a mounting method thereof. The magnetic track module comprises at least two layers of magnetic units which are distributed in a staggered mode in a first direction and are stacked in a second direction with the same magnetic field direction; the magnetic units are formed by closely arranging a plurality of permanent magnetic blocks; a bottom plate covers the lower end surface of the bottom layer of magnetic units and is magnetically attracted to the magnetic units; under the action of the magnetic field attraction between the two adjacent layers of magnetic units and between the bottom plate and the adjacent magnetic units, the static friction force generated between the two adjacent layers of magnetic units and between the bottom plate and the adjacent magnetic units can balance all or part of the magnetic field repulsion between the adjacent permanent magnetic blocks in the same layer of magnetic units, the gap between the same layer and the adjacent permanent magnetic blocks is reduced, the stability and safety of the magnetic track module are enhanced, and the uniform distribution of the magnetic field strength above the magnetic track module along the axial direction is optimized.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet track technology, specifically to a magnetic track module, a composite permanent magnet track, and an installation method thereof. Background Technology

[0002] Permanent magnet rails often employ a single-layer structure with permanent magnet blocks arranged sequentially (or even a complex Hellbeck array in the horizontal direction of the cross-section). However, there is a large magnetic repulsion between adjacent permanent magnet blocks, which is not conducive to the close arrangement of permanent magnet blocks and seriously threatens the stability and safety of permanent magnet rails. This will also directly lead to large fluctuations in the axial distribution of the magnetic field strength above the permanent magnet rail and seriously affect the smooth running quality of permanent magnet maglev trains. Summary of the Invention

[0003] The purpose of this invention is to provide a magnetic track module, a composite permanent magnet track and its preparation method. The static friction between two adjacent magnetic units and between the base plate and adjacent magnetic units balances all or part of the magnetic repulsion between adjacent permanent magnet blocks in the same layer, reduces the gap between adjacent permanent magnet blocks in the same layer, enhances the stability and safety of the magnetic track module, and optimizes the uniform distribution of the magnetic field strength along the axial direction above it.

[0004] To achieve the above objectives, a first aspect of the present invention provides a magnetic track module, comprising:

[0005] At least two layers of magnetic units are staggered in a first direction and stacked in a second direction with the same magnetic field direction; each magnetic unit is composed of multiple permanent magnet blocks with the same magnetic field direction arranged closely in the first direction; wherein the magnetic field direction is along the second direction;

[0006] The base plate covers the lower end face of the bottom magnetic unit and has a magnetic attraction between it and the magnetic unit;

[0007] Under the influence of the magnetic attraction between two adjacent magnetic units and between the base plate and the adjacent magnetic unit, the static friction generated between two adjacent magnetic units and between the base plate and the adjacent magnetic unit can balance the magnetic repulsion between adjacent permanent magnet blocks of the same layer of magnetic units.

[0008] Based on the staggered distribution between adjacent magnetic units, the magnetic attraction between adjacent permanent magnet blocks in different layers increases the static friction between them. This balances all or part of the magnetic repulsion between adjacent permanent magnet blocks in the same layer, reducing the gap between them and enhancing the stability and safety of the magnetic track module. Simultaneously, by utilizing the complementary magnetic field relationship between adjacent magnetic units, the axial distribution of the magnetic field strength above them becomes more uniform.

[0009] Furthermore, the staggered distribution between adjacent magnetic units in two layers specifically means that the receiving point of the permanent magnet block of an adjacent magnetic unit in the same layer is located in the middle part of the permanent magnet block of another magnetic unit.

[0010] Furthermore, the magnetic units in adjacent layers and the base plate are bonded to the adjacent magnetic units using an adhesive.

[0011] Furthermore, the magnetic track module also includes a protective sleeve made of a non-ferromagnetic material. The interior of the protective sleeve has a receiving space adapted to the magnetic unit and the base plate, and openings at both ends communicate with the receiving space. The magnetic unit and the base plate are partially wrapped inside the protective sleeve to maintain the staggered stacking state of the magnetic unit and form a linear connection structure between the magnetic unit and the two ends of the protective sleeve.

[0012] Furthermore, the non-ferromagnetic material includes at least one of plastic, carbon fiber, aluminum alloy, and stainless steel.

[0013] Furthermore, the linear connection structure includes mutually adapted module connection recesses and module connection protrusions respectively formed at both ends of the protective sleeve;

[0014] The module connection recess is formed by a notch created by the misalignment of two magnetic units and the wall of the protective sleeve; the module connection protrusion is formed by a permanent magnet block extending out of the protective sleeve.

[0015] Furthermore, the base plate is made of a high-permeability soft magnetic material.

[0016] A second aspect of the present invention provides a composite permanent magnet track, the composite permanent magnet track comprising a plurality of the aforementioned track modules; the track modules are connected to each other via the aforementioned linear connection structure.

[0017] The composite permanent magnet track constructed using the above-mentioned magnetic track modules has a more uniform distribution of magnetic field strength along the axial direction, resulting in significantly improved stability and safety.

[0018] A third aspect of the present invention provides a method for installing the composite permanent magnet track, the method comprising assembling a plurality of the track modules through the linear connection structure.

[0019] The composite permanent magnet track obtained by this installation method has a more uniform distribution of magnetic field strength along the axial direction, and its stability and safety are significantly improved.

[0020] Furthermore, one end of a magnetic track module with a module connection protrusion is connected to one end of another magnetic track module with a module connection recess, forming a linear magnetic track with a protective sleeve aligned at the connection point.

[0021] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of one embodiment of the magnetic track module of the present invention;

[0023] Figure 2 This is a schematic diagram of one embodiment of the magnetic unit;

[0024] Figure 3 This is a structural diagram of one embodiment of the protective case.

[0025] Explanation of reference numerals in the attached figures

[0026] 10 Magnetic unit; 11 Permanent magnet block; 20 Base plate; 30 Protective sleeve; 31 Module connection recess; 32 Module connection protrusion; 33 Opening. Detailed Implementation

[0027] The following provides a detailed description of specific embodiments of the present invention. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0028] In this invention, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the orientation in the assembled and used state. "Inner" and "outer" refer to the inner and outer sides relative to the outline of each component itself.

[0029] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of the invention described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0030] The first aspect of this invention provides a magnetic track module. For example... Figures 1-3As shown, the magnetic track module includes magnetic units 10 and a base plate 20. At least two layers of magnetic units 10 are staggered in a first direction and stacked in a second direction with the same magnetic field direction (e.g., north pole on the upper surface or south pole on the upper surface). Each magnetic unit 10 is formed by a plurality of permanent magnet blocks 11 arranged closely in the first direction with the same magnetic field direction. The magnetic field direction is along the second direction. The base plate 20 covers the lower end face of the bottom layer of magnetic units 10 and has a magnetic attraction between it and the magnetic units 10. Under the action of the magnetic attraction between adjacent layers of magnetic units 10 and between the base plate 20 and adjacent magnetic units 10, the static friction generated between adjacent layers of magnetic units 10 and between the base plate 20 and adjacent magnetic units 10 can balance all or part of the magnetic repulsion between adjacent permanent magnet blocks 11 of the same layer of magnetic units 10.

[0031] It should be explained that the "first direction" mentioned above refers to the length extension direction of the magnetic unit 10, and the "second direction" refers to the stacking direction of the magnetic unit 10.

[0032] In a preferred embodiment, the base plate 20 is made of a high-permeability soft magnetic material. Specific high-permeability soft magnetic materials include electrical pure iron, low-carbon steel, silicon steel, iron-nickel alloys, iron-based or cobalt-based amorphous alloys, etc. On the one hand, the base plate 20 serves as an adsorption target for the magnetic unit 10, increasing the static friction between the base plate 20 and adjacent magnetic units 10 to balance all or part of the magnetic repulsion between adjacent permanent magnet blocks 11 in the same layer of magnetic units 10. On the other hand, the base plate 20 can reduce the radiation of the magnetic field of the magnetic unit 10 to the side outside, thus serving as a shield for the magnetic field.

[0033] Based on the staggered distribution between adjacent magnetic units 10, the magnetic attraction between adjacent permanent magnet blocks 11 in different layers increases the static friction between them. This balances all or part of the magnetic repulsion between adjacent permanent magnet blocks 11 in the same layer, reducing the gap between them and enhancing the stability and safety of the magnetic track module. Simultaneously, by utilizing the complementary relationship between the magnetic fields of adjacent magnetic units, the axial distribution of the magnetic field strength above them will be more uniform.

[0034] In a preferred embodiment, the staggered distribution between two adjacent magnetic units 10 specifically means that the receiving point of the adjacent permanent magnet block 11 of the same magnetic unit 10 is located in the middle part (i.e., at half the length) of the permanent magnet block 11 of the other magnetic unit. Of course, the receiving point can also be located at one-third or one-quarter of the length of the permanent magnet block 11 of the other magnetic unit.

[0035] It should be noted that "acceptance" refers to a connection method. For example... Figure 2As shown, multiple permanent magnet blocks 11 are closely arranged along a first direction, with a certain gap between adjacent permanent magnet blocks 11 in the same layer. This connection method, in which adjacent permanent magnet blocks 11 in the same layer are closely arranged with a certain gap between them, is defined as "connection". Of course, this gap is caused by the magnetic repulsion between the permanent magnet blocks 11.

[0036] In actual production, the permanent magnet block 11 is formed by die casting, making it impossible to produce permanent magnet blocks several meters or even tens of meters long. This is one of the significances of this invention: modularizing the composite permanent magnet track allows for on-site assembly. In the technical solution of this invention, the length of the permanent magnet block 11 is preferably set to 0.1 to 0.2 meters.

[0037] To further increase the static friction between adjacent magnetic units 10 and between the base plate 20 and adjacent magnetic units 10, the adjacent magnetic units 10 and the base plate 20 and adjacent magnetic units 10 can be bonded together using an adhesive (such as glue or double-sided tape). It should be noted that the adhesive is primarily used to increase the coefficient of static friction between adjacent magnetic units 10 and between the base plate 20 and adjacent magnetic units 10.

[0038] To achieve bending or warping of the composite permanent magnet track, the base plate 20 can be prestressed and the geometric parameters of the permanent magnet block can be adjusted appropriately.

[0039] like Figure 1 and Figure 3 As shown, the magnetic track module also includes a protective sleeve 30 made of a non-ferromagnetic material. The non-ferromagnetic material can be any one or more of plastic, carbon fiber, aluminum alloy, and stainless steel. The protective sleeve 30 has an internal accommodating space adapted to the magnetic unit 10 and the base plate 20, and openings 33 at both ends communicating with the accommodating space. The magnetic unit 10 and the base plate 20 are partially enclosed within the protective sleeve 30 to maintain the staggered stacking state of the magnetic units. Simultaneously, the protective sleeve 30 and the magnetic unit 10 form a linear connection structure at both ends of the magnetic track module.

[0040] Furthermore, the linear connection structure includes module connection recesses 31 and module connection protrusions 32 that are mutually adapted and respectively formed at both ends of the protective sleeve 30. For example... Figure 1 As shown, the module connection recess 31 is formed by a notch created by the overlapping and misalignment of two magnetic units 10 and the wall of the protective sleeve 30. The module connection protrusion 32 is formed by a portion of the permanent magnet block 11 extending out of the protective sleeve 30.

[0041] In actual production, the magnetic track module can be used as a unit module when laying continuous composite permanent magnet tracks (for example, each of the upper and lower magnetic units consists of ten permanent magnet blocks). This unit module can be processed in a magnetic material factory. When laying composite permanent magnet tracks, based on the configuration of the module connecting recess 31 and the module connecting protrusion 32, it is only necessary to connect and fix the magnetic track modules end to end in sequence.

[0042] A second aspect of this invention provides a composite permanent magnet track, comprising multiple track modules. The track modules are connected by a linear connection structure. The composite permanent magnet track using these track modules exhibits a more uniform axial distribution of the magnetic field strength, significantly improving stability and safety.

[0043] A third aspect of the present invention provides a method for installing the composite permanent magnet track, the method comprising: assembling multiple track modules via a linear connection structure. The composite permanent magnet track obtained by this method exhibits a more uniform axial distribution of the magnetic field strength above it, resulting in significantly improved stability and safety.

[0044] Furthermore, one end of a magnetic track module with a module connecting protrusion 32 is connected to one end of another magnetic track module with a module connecting recess 31, forming a linear magnetic track with the protective sleeve 30 aligned at the connection point.

[0045] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0046] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0047] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A magnetic track module, characterized in that, The magnetic track module includes: At least two layers of magnetic units (10) are staggered in a first direction and stacked in a second direction with the same magnetic field direction; each magnetic unit (10) is formed by a plurality of permanent magnet blocks (11) with the same magnetic field direction arranged closely in the first direction; wherein the magnetic field direction is along the second direction; the first direction is the length extension direction of the magnetic unit (10), and the second direction is the stacking direction of the magnetic units (10); the staggered distribution between two adjacent layers of magnetic units (10) is specifically such that the receiving part of the adjacent permanent magnet blocks (11) of the same layer of magnetic units (10) is located in the middle part of the permanent magnet blocks (11) of another layer of magnetic units (10); The base plate (20) covers the lower end face of the bottom magnetic unit (10) and there is a magnetic attraction between it and the magnetic unit (10); Under the magnetic attraction between two adjacent magnetic units (10) and between the base plate (20) and the adjacent magnetic unit (10), the static friction generated between two adjacent magnetic units (10) and between the base plate (20) and the adjacent magnetic unit (10) can balance the magnetic repulsion between adjacent permanent magnet blocks (11) of the same layer of magnetic units (10); The magnetic track module also includes a protective sleeve (30) made of non-ferromagnetic material. The interior of the protective sleeve (30) has a receiving space adapted to the magnetic unit (10) and the base plate (20), and openings (33) at both ends are formed to communicate with the receiving space. The magnetic unit (10) and the base plate (20) are partially wrapped in the protective sleeve (30) to maintain the staggered stacking state of the magnetic unit (10) and form a linear connection structure with the magnetic unit (10) at both ends of the protective sleeve (30). The linear connection structure includes a module connection recess (31) and a module connection protrusion (32) that are adapted to each other and formed at both ends of the protective sleeve (30). The module connection recess (31) is formed by the gap generated by the stacking and staggering of the two magnetic units (10) and the wall of the protective sleeve (30). The module connection protrusion (32) is formed by a portion of permanent magnet block (11) extending out of the protective sleeve (30).

2. The magnetic track module according to claim 1, characterized in that, The magnetic units (10) of two adjacent layers are bonded together by an adhesive and the base plate (20) is bonded to the adjacent magnetic units (10).

3. The magnetic track module according to claim 1, characterized in that, The non-ferromagnetic material includes at least one of plastic, carbon fiber, aluminum alloy, and stainless steel.

4. The magnetic track module according to any one of claims 1-3, characterized in that, The base plate (20) is made of a high-permeability soft magnetic material.

5. A composite permanent magnet track, characterized in that, The composite permanent magnet track includes multiple track modules as described in claim 1; the track modules are connected to each other via the linear connection structure.

6. A method for installing the composite permanent magnet track as described in claim 5, characterized in that, The installation method of the composite permanent magnet track includes assembling multiple track modules through the linear connection structure.

7. The installation method of the composite permanent magnet track according to claim 6, characterized in that, One end of a magnetic track module with a module connection protrusion (32) is connected to the end of another magnetic track module with a module connection recess (31) to form a linear magnetic track with a protective sleeve (30) aligned at the connection.

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