Track structure for magnetic levitation train and manufacturing method thereof

Abstract

A track structure for a magnetic levitation train and a manufacturing method thereof are provided to effectively suppress the exfoliation of an adhesive layer between laminated electrical steel sheets, thereby improving the structural stability and durability of a track. According to an embodiment of the present invention, the track structure for a magnetic levitation train comprises: a track unit formed by stacking, by using an adhesive layer, a plurality of electrical steel plates provided in a shape having a predetermined length and height to be applied to a track of a magnetic levitation train; and a reinforcement unit provided at a position at which structural stability of the track unit along a longitudinal direction of the track unit is reinforced to reinforce the bonding of the adhesive layer of the track unit and suppress the exfoliation of the adhesive layer according to a load and deformation applied to the track unit.

Description

Track structure for magnetic levitation train and manufacturing method

[0001] The present invention relates to a track structure for a magnetic levitation train and a method for manufacturing it.

[0002] Maglev trains can levitate and travel at high speeds without friction, making them a critical component of high-speed railway systems. The tracks of these maglev trains are constructed from laminated electrical steel sheets to ensure stability and durability. Electrical steel sheets provide high strength and conductivity, guaranteeing the structural stability of the tracks. However, when a load is applied to the track, deformation occurs, which can lead to delamination in the adhesive layer between the laminated electrical steel sheets.

[0003] In conventional technology, methods such as improving adhesive performance or adjusting the thickness of the adhesive layer have been used to suppress delamination in the adhesive layer of the track. However, these methods have not been able to sufficiently guarantee the structural stability of the track. For example, there are limitations in completely preventing the delamination of the adhesive layer when high loads are applied. Furthermore, conventional technology required additional complex equipment or processes in the track manufacturing process, making it difficult to apply economically and efficiently. Therefore, a new technology is required that can improve the durability of the track and effectively suppress the delamination of the adhesive layer.

[0004] The embodiment of the present invention is intended to provide a magnetic levitation train track structure and a manufacturing method that can effectively suppress the delamination of the adhesive layer between laminated electrical steel sheets occurring in a magnetic levitation train track, thereby improving the structural stability and durability of the track.

[0005] A track structure for a magnetic levitation train according to an embodiment of the present invention comprises a track section formed by laminating a plurality of electrical steel plates, each having a shape with a predetermined length and height to be applied to the track of a magnetic levitation train, into an adhesive layer, and a reinforcing section provided at a position along the longitudinal direction of the track section to reinforce the structural stability of the track section, thereby reinforcing the bonding of the adhesive layer of the track section and suppressing the peeling of the adhesive layer due to load and deformation applied to the track section.

[0006] The track section may be provided with hollow connecting holes at both ends in the longitudinal direction so that connecting members can be joined.

[0007] The connecting hole may be provided on the upper side of the centerline along the height direction of the track section.

[0008] At least one reinforcing member may be provided along the height direction of the track section above the centerline.

[0009] The reinforcing member can be joined to a coupling hole penetrating from the center of the track section in the stacking direction using a bolt and nut fastening structure.

[0010] The coupling hole may be provided with a diameter of 8 mm or more and 20 mm or less.

[0011] The bolt can be set to a yield strength of 750 MPa or higher.

[0012] Meanwhile, a method for manufacturing a track structure for a magnetic levitation train according to an embodiment of the present invention includes a track section manufacturing step of forming a track section by laminating a plurality of electrical steel plates, which are provided in a shape having a predetermined length and height to be applied to the track of a magnetic levitation train, into an adhesive layer, and a track section reinforcement step of suppressing peeling of the adhesive layer of the track section by attaching a reinforcement section at a position on one side of the track section to reinforce the structural stability of the track section.

[0013] The track reinforcement step may include a coupling hole machining step of machining a coupling hole that penetrates in the stacking direction of the track section with a predetermined size above the centerline along the height direction of the track section, and a bolt fastening step of reinforcing the track section by fastening a bolt and nut having a predetermined yield strength into the coupling hole.

[0014] By reinforcing the track for a magnetic levitation train, the structural stability of the track is improved, and delamination that may occur in the adhesive layer between electrical steel sheets formed by lamination is effectively suppressed, thereby increasing the durability of the track lamination structure and ensuring the safe and reliable operation of the magnetic levitation train.

[0015] FIG. 1 is a schematic diagram illustrating the manufacturing process of a track structure for a magnetic levitation train according to an embodiment of the present invention.

[0016] FIG. 2 is a cross-sectional view schematically illustrating the connection relationship between the track section and the reinforcement section in a track structure for a magnetic levitation train according to an embodiment of the present invention.

[0017] FIG. 3 is a schematic diagram illustrating a state in which the maximum force in the separation region is reduced by reinforcing the compressive force of the reinforcing part in a track structure for a magnetic levitation train according to an embodiment of the present invention.

[0018] The technical terms used herein are for the reference of specific embodiments only and are not intended to limit the invention. The singular forms used herein include plural forms unless phrases clearly indicate otherwise. The meaning of "comprising" as used in the specification specifies a particular characteristic, area, integer, step, action, element, and / or component, and does not exclude the presence or addition of other particular characteristic, area, integer, step, action, element, component, and / or group.

[0019] Unless otherwise defined, all terms used herein, including technical and scientific terms, have the same meaning as generally understood by those skilled in the art to which this invention pertains. Terms defined in commonly used dictionaries are further interpreted to have meanings consistent with relevant technical literature and the present disclosure, and are not interpreted in an ideal or highly formal sense unless otherwise defined.

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.

[0021] FIG. 1 is a schematic diagram illustrating the manufacturing process of a track structure for a magnetic levitation train according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view schematically illustrating the connection relationship between the track part and the reinforcement part in a track structure for a magnetic levitation train according to an embodiment of the present invention. FIG. 3 is a schematic diagram illustrating a state in which the maximum force in the peeling region is reduced by reinforcing the compressive force of the reinforcement part in a track structure for a magnetic levitation train according to an embodiment of the present invention.

[0022] Referring to FIGS. 1 to 3, a track structure for a magnetic levitation train according to an embodiment of the present invention includes a track section (100) and a reinforcing section (120). Through the reinforcing structure of the magnetic levitation train track, the structural stability of the track is improved, and the durability of the track laminated structure can be secured by effectively preventing the delamination phenomenon that may occur in the adhesive layer (110a) formed between the electrical steel plates (110) formed by lamination. Accordingly, the safety and operational reliability of the magnetic levitation train are improved, enabling continuous and stable operation.

[0023] The track section (100) may be formed by laminating a plurality of electrical steel plates (110), which are provided with a shape having a predetermined length and height to be applied to the track of a magnetic levitation train, with an adhesive layer (110a). The track section (100) may be formed by providing a plurality of electrical steel plates (110) that have a rectangular shape with a length of 1m to 1.6m and a certain height, and laminating each electrical steel plate (110) so that they are bonded with a predetermined adhesive. The track section (100) may be provided with hollow connecting holes (112) at both ends in the longitudinal direction so that connecting members can be attached. The connecting holes (112) may be provided on the upper side of the centerline along the height direction of the track section (100). That is, at both ends of the track section (100), hollow connecting holes (112) that are empty may be provided so that connecting members can be inserted for connection with adjacent track sections (100). The hollow shape of the connecting hole (112) can be provided in various shapes such as square, rounded square, elliptical, and circular.

[0024] The track section (100) according to an embodiment of the present invention may be installed on the ceiling portion inside the tube body of a Hyperloop device. A Hyperloop device is a system that transports a moving vehicle by magnetic levitation inside a sealed tube body at a pressure of about 0.001 atmospheres or less. The track section (100) receives magnetic force from an electromagnet located at the bottom inside the Hyperloop. This magnetic force may correspond to the weight of the magnetic levitation train. Magnetic levitation and movement of the moving vehicle inside the tube body of the Hyperloop device can be performed by the action of mutual attraction and repulsion between the permanent magnet and the electromagnet member. In this process, the current supplied to the electrical steel plate forming the track section (100) may be adjusted to influence the formation of magnetic force.

[0025] Since both ends of the track section (100) are fixed by connecting members, the sagging of the track section (100) can be most severe when the load corresponding to the weight of the magnetic levitation train is concentrated at the center of the track section (100). The main deformation in the sagging of the track section (100) is in the direction of the electromagnet, but deformation may also occur in a direction perpendicular to it. In particular, when the track section (100) sags, a force acting to spread out to both sides along the longitudinal direction of the track section (100) acts on the lower surface of the track section (100) where the force of the electromagnet acts directly, and peeling of the adhesive layer (110a), which is the part where multiple electrical steel plates (110) are laminated and bonded in the track section (100), may occur. Since the track section (100) installed inside the tube body resists the load of the moving vehicle and guides the moving vehicle, it is important to maintain a straight line. The Hyperloop device can improve the problem of sagging caused by the weight of the tube body or vibrations of the moving vehicle, etc., by reinforcing the track section (100).

[0026] The reinforcing member (120) is provided at a position that reinforces the structural stability of the track member (100) along the longitudinal direction of the track member (100), thereby reinforcing the bonding of the adhesive layer (110a) of the track member (100) and suppressing the peeling of the adhesive layer (110a) due to load and deformation applied to the track member (100).

[0027] Reinforcement members (120) may be provided at least one above the centerline along the height direction of the track section (100). Reinforcement members (120) may be connected to a coupling hole (120a) that penetrates in the stacking direction from the center of the track section (100) using a fastening structure of a bolt (121) and a nut (122). Here, the yield strength of the bolt (121) may be set to 750 MPa or higher. The coupling hole (120a) may be provided with a diameter of 8 mm or more and 20 mm or less. Accordingly, the bolt (121) may be provided with a size that can be inserted into the diameter of the coupling hole (120a). That is, in order to suppress the peeling of the adhesive layer (110a) due to the load and deformation applied to the track section (100), a coupling hole (120a) with a diameter of 8 mm or more and 20 mm or less is machined in the center along the height direction of the track section (100), and a bolt (121) with a yield strength of 750 MPa or more and a diameter of 8 mm or more and 20 mm or less corresponding to the coupling hole (120a) can be fastened to the coupling hole (120a). Then, if the bolt (121) is fixed with a nut (122) to generate a compressive force of 750 MPa or more, the force causing the gap on the lower surface of the track section (100) is reduced to less than half, and even if a load is applied by the magnetic levitation train, the occurrence of peeling in the adhesive layer (110a) of the laminated electrical steel plate (110) can be prevented.

[0028] A coupling hole (120a) can be drilled with a diameter of 8 mm or more and 20 mm or less, offset from the center height of the track section (100). In an embodiment of the present invention, the reason for drilling a coupling hole (120a) of 10 mm is explained. If the size of the coupling hole (120a) is less than 8 mm, the strength is reduced, and there is a disadvantage in that it cannot adequately respond to the release of bending of the track section (100). On the other hand, if the size of the coupling hole (120a) exceeds 20 mm, it encroaches on the centerline along the height direction of the track section (100), and there is a disadvantage in that it can interfere with the influence of the magnetic field.

[0029] As described above, the embodiment of the present invention may apply a reinforcement technology that effectively suppresses delamination that may occur in the adhesive layer (110a) of the laminated electrical steel plate (110) in order to improve the durability of the track for a magnetic levitation train. Through this, the stability and reliability of the track section (100) can be increased, and the safe operation of the magnetic levitation train can be guaranteed. Furthermore, since the embodiment of the present invention does not require additional complex equipment or processes in the manufacturing process of the track section (100), it can be applied in an economical and efficient manner. In addition, the embodiment of the present invention can enable safe and reliable operation of the magnetic levitation train by providing a technology that improves the structural stability of the track section (100) for a magnetic levitation train and increases the durability of the track section (100) by suppressing delamination of the adhesive layer (110a).

[0030] A method for manufacturing a track structure for a magnetic levitation train according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

[0031] First, the track section (100) can be formed using laminated electrical steel plates (110) according to the process of manufacturing the track section (100) for a magnetic levitation train. Multiple electrical steel plates (110) may be provided and bonded together. Although the magnetic levitation train has the advantage of being able to levitize without friction with the track section (100) and move at high speed, delamination may occur in the adhesive layer (110a) of the steel plates due to the load and deformation applied to the track section (100). Such delamination can lower the structural stability of the track section (100) and cause serious problems in train operation. Therefore, a technology is required to improve the durability of the track section (100) and suppress delamination.

[0032] In a method for manufacturing a track structure for a magnetic levitation train according to an embodiment of the present invention, two main reinforcement techniques are described to improve the durability of the track section (100) and to suppress the delamination phenomenon that may occur in the adhesive layer (110a) of the electrical steel plate (110). The first is to drill a coupling hole (120a) of a predetermined size at an angle from the center height relative to the height direction of the track section (100), and to insert and fasten a bolt (121) having a predetermined tensile strength into it. The bolt (121) strongly fixes the laminated electrical steel plate (110) of the track section (100), thereby effectively dispersing the deformation that occurs when a load is applied.

[0033] Second, a force of 750 MPa or more is applied when fastening the bolt (121). This maximizes the bonding force between the bolt (121) and the electrical steel sheet (110), so that even if a load of 3 tons is applied to the track section (100), delamination does not occur in the adhesive layer (110a). This strong fastening force can significantly improve the structural stability of the track section (100).

[0034] As described above, a coupling hole (120a) with a diameter of 8 mm or more and 20 mm or less is drilled above the centerline based on the height direction of the track section (100), and a bolt (121) having a yield strength of 750 MPa or more is inserted therein. In addition, a compressive force of 750 MPa or more is applied when the bolt (121) is fastened so that even if a high load is applied to the track section (100), delamination does not occur in the adhesive layer (110a). For example, by drilling a coupling hole (120a) of 10 mm above the center height of the track section (100) and inserting a bolt (121) having a tensile strength of 1.5 GPa into it, the structural stability of the track section (100) can be greatly improved, and the safe operation of the magnetic levitation train can be guaranteed.

[0035] Meanwhile, when the electrical steel sheet (110) constituting the track section (100) has an elastic modulus in the tensile direction of at least 150 GPa and a yield strength of at least 250 MPa, the occurrence of delamination in the adhesive layer (110a) of the electrical steel sheet (110) laminated through the embodiment of the present invention can be prevented. At this time, when the fastening force during adhesion between the electrical steel sheet (110) and the electrical steel sheet (110) in the laminated structure of the track section (100) is at least 2 MPa, the occurrence of delamination in the electrical steel sheet (110) laminated through the embodiment of the present invention can be prevented.

[0036] In the shape of the stacked track section (100), the length of the track section (100) is L, the height of the track section (100) is T, the stacking height of the track section (100) is H, the height of the gap into which the connecting member enters is h based on the lower surface of the track section (100) being 0, the diameter of the coupling hole (120a) is D, and the height of the center of the coupling hole (120a) is c based on the lower surface of the track section (100) being 0, and the following mathematical formula can be satisfied.

[0037] [Mathematical Formula 1] 40 x T ≥ L ≥ 15 x T

[0038] [Mathematical Equation 2] 3T ≥ H ≥ T

[0039] [Mathematical Equation 3] h ≥ T / 2

[0040] [Mathematical Equation 4] T ≥ 4 x D

[0041] [Mathematical Equation 5] c - D / 2 ≥ T / 2

[0042] At this time, regarding the rigidity of the stacked track section (100), when the elastic modulus in the tensile direction of the electrical steel sheet (110) constituting the track section (100) is G, the yield strength in the tensile direction of the steel sheet constituting the track is Y, the diameter of the hole is D, the number of holes per 1m of the track is N, the elastic modulus of the bolt (121) is B, the diameter of the bolt (121) is d, and the yield strength of the bolt (121) is y, the following mathematical formula can be satisfied.

[0043] [Mathematical Formula 6] Y x 700 > G

[0044] [Mathematical Equation 7] 2 x Y < y

[0045] [Mathematical Equation 8] yx N x π(D / 2)2 > 150 x L x T x Y

[0046] [Mathematical Equation 9] B > 10 xy

[0047] As described above, the embodiment of the present invention provides a technology that improves the structural stability of a track for a magnetic levitation train and enables safe and reliable operation of the magnetic levitation train by effectively suppressing delamination that may occur in the adhesive layer (110a) between laminated electrical steel plates (110), thereby increasing the durability of the track portion (100), and thus the following effects can be obtained.

[0048] 1. Prevention of peeling of the adhesive layer (110a): The problem of peeling occurring in the adhesive layer (110a) between the laminated electrical steel sheets (110) due to deformation caused when a load is applied to the track section (100) can be solved. Through this, the structural stability of the track section (100) can be maintained, and the reliability of the adhesive layer (110a) can be guaranteed even during long-term use. By drilling a 10mm connecting hole (120a) offset upward from the center height of the track section (100) and inserting a bolt (121) having a tensile strength of 750MPa into it, the load applied to the track section (100) can be effectively distributed, thereby preventing peeling that may occur in the adhesive layer (110a). Through this, the durability of the track section (100) can be greatly improved.

[0049] 2. Improvement of structural stability: A connecting hole (120a) with a diameter exceeding 8 mm is drilled above the center height of the track section (100), and a bolt (121) having a yield strength of 750 MPa or more is inserted therein to improve the structural stability of the track section (100). Through this, the load applied to the track section (100) can be effectively distributed and deformation can be minimized.

[0050] 3. Securing strong fastening force: By applying a compressive force of 750 MPa or more when fastening the bolt (121), the bonding force between the laminated electrical steel plates (110) of the track section (100) can be maximized. Through this, even if a high load (a load of 3 tons) is applied to the track section (100), delamination does not occur in the adhesive layer (110a), and the structural stability of the track section (100) can be maintained. Referring to FIG. 3, it can be seen that the maximum force in the delamination area is reduced by reinforcing the compressive force of the reinforcing part in the track structure for a magnetic levitation train according to an embodiment of the present invention. The upper drawing in FIG. 3 visualizes the load in the steel plate lamination direction when a load is applied to the track section to which the embodiment of the present invention is not applied, and the lower drawing in FIG. 3 visualizes the load in the steel plate lamination direction in the track section (100) to which the embodiment of the present invention is applied. For example, assuming a case where a vertical deformation load (2.5 tons) is applied to the track section (100), the maximum force in the peeling area in the conventional track section is 4 MPa. In contrast, in the track section (100) to which the embodiment of the present invention is applied, the load applied to the track section (100) is effectively distributed through the reinforcing section (120), so that the maximum force in the peeling area is reduced to 2.1 MPa. Therefore, even if a high load is applied to the track section (100), peeling that may occur in the adhesive layer (110a) can be prevented.

[0051] 4. Economical and efficient manufacturing process: Since the present invention does not require additional complex equipment or processes, it can be applied to the manufacturing process of the track part (100) in an economical and efficient manner. This can reduce manufacturing costs and improve productivity.

[0052] 5. Safe Operation Guaranteed: By improving the durability and structural stability of the track section (100), the safe operation of the magnetic levitation train can be guaranteed. This prevents accidents that may occur during the operation of the magnetic levitation train and ensures the safety of passengers. By solving these technical problems, the embodiment of the present invention can significantly improve the performance and reliability of the track section (100) for the magnetic levitation train and contribute to the development of the high-speed railway system.

[0053] 6. Long-term reliability can be ensured by suppressing the peeling of the adhesive layer (110a), thereby ensuring long-term reliability of the track section (100). This can contribute to reducing maintenance costs of the track section (100) and ensuring continuous stability of the operation of the magnetic levitation train.

[0054] 7. Contribution to the development of high-speed railway systems: An embodiment of the present invention can contribute to the development of high-speed railway systems by significantly improving the performance and reliability of the track section (100) for a magnetic levitation train. This can provide faster and safer means of railway transportation.

[0055] Although preferred embodiments of the present invention have been described above, the present invention is not limited thereto and can be implemented with various modifications within the scope of the claims, the detailed description of the invention, and the attached drawings, and it is obvious that such modifications also fall within the scope of the present invention.

Claims

1. A track section formed by laminating a plurality of electrical steel plates, each having a shape with a preset length and height for application to a track of a magnetic levitation train, into an adhesive layer, and A reinforcing member provided at a position along the longitudinal direction of the track portion to reinforce the structural stability of the track portion, reinforcing the bonding of the adhesive layer of the track portion and suppressing peeling of the adhesive layer due to load and deformation applied to the track portion. A track structure for a magnetic levitation train including 2. In Paragraph 1, The above track section is a track structure for a magnetic levitation train, having hollow connecting holes at both ends in the longitudinal direction to allow connecting members to be joined.

3. In Paragraph 2, The above connecting hole is a track structure for a magnetic levitation train provided on the upper side of the centerline along the height direction of the track section.

4. In Paragraph 1, The above reinforcing member is a track structure for a magnetic levitation train provided with at least one above the centerline along the height direction of the above track member.

5. In Paragraph 4, The above reinforcing part A track structure for a magnetic levitation train that is joined by a bolt and nut fastening structure to a coupling hole penetrating in the stacking direction from the center of the above track section.

6. In Paragraph 5, The above-mentioned coupling hole is provided with a diameter of 8 mm or more and 20 mm or less, for a track structure for a magnetic levitation train.

7. In Paragraph 5, The above bolt is a track structure for a magnetic levitation train having a yield strength of 750 MPa or more.

8. A track section manufacturing step of forming a track section by laminating a plurality of electrical steel plates, which are provided in a shape having a preset length and height to be applied to the track of a magnetic levitation train, with an adhesive layer; and Track reinforcement step of suppressing peeling of the adhesive layer of the track by attaching a reinforcement member at a position on one side of the track portion that reinforces the structural stability of the track portion. A method for manufacturing a track structure for a magnetic levitation train including 9. In Paragraph 8, The above track reinforcement step is A coupling hole machining step of machining a coupling hole that penetrates in the stacking direction of the track portion, having a preset size above the centerline along the height direction of the track portion, and A bolt fastening step for reinforcing the track portion by fastening a bolt and nut having a preset yield strength into the aforementioned coupling hole. A method for manufacturing a track structure for a magnetic levitation train including

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