Split mounting type F rail for maglev train and preparation method of split mounting type F rail

Abstract

The invention discloses an assembled F rail for a maglev train, which comprises a connecting plate, an induction plate and a C-shaped rail, the induction plate and the C-shaped rail are detachably arranged on two opposite surfaces of the connecting plate respectively, the C-shaped rail and the connecting plate form an F-shaped structure, and a magnetic pole face processing area is arranged on the end face of the C-shaped rail; the invention further provides a preparation method of the split mounting type F rail for the maglev train. According to the split mounting type F rail for the maglev train, the F rail is of a split mounting type structure, the problems that track panel materials need to be customized, and the material purchasing cost is high can be solved, and the machining, mounting and debugging processes of the F rail can be simplified to a certain extent.

Description

Technical Field

[0001] The invention relates to the technical field of rail transportation, and in particular to an assembled F rail for a magnetic levitation train and a preparation method thereof. Background Art

[0002] A maglev train is a rail vehicle that uses electromagnetic force to achieve contactless support and guidance of the train, and linear motors to achieve contactless traction and braking. The track used by medium and low-speed maglev trains is its unique F-shaped rail (also known as F-rail). The maglev train is suspended by the electromagnetic attraction generated by the electromagnet installed on the train and under the F-rail. Most of the existing F-rails adopt an integrated structure of rolled forming. The rail material needs to be specially customized, the material procurement cost is high, and there are also certain difficulties in processing, installation and commissioning. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides an assembled F rail for a maglev train and a preparation method thereof. The F rail adopts an assembled structure, which can not only solve the problem that the rail material needs to be customized and the material procurement cost is high, but also simplify the processing, installation and debugging process of the F rail to a certain extent.

[0004] The technical solution provided by the present invention is as follows: An assembled F-rail for a maglev train comprises a connecting plate, an induction plate and a C-rail. The induction plate and the C-rail are respectively detachably arranged on two opposite surfaces of the connecting plate. The C-rail and the connecting plate form an F-shaped structure. A magnetic pole surface processing area is arranged on the end surface of the C-rail.

[0005] Preferably, the C-shaped rail is composed of a plurality of metal or metal alloy plates that are bent and overlapped.

[0006] Preferably, the C-shaped rail is composed of three steel plates that are bent and overlapped.

[0007] Preferably, the thickness of the outer steel plate among the three steel plates is greater than the thickness of the inner steel plate.

[0008] Preferably, the thicknesses of the three steel plates are 10±1 mm, 10±1 mm, and 8±1 mm from the outside to the inside, respectively.

[0009] Preferably, the bending angle of the metal or metal alloy plate is 90-100°.

[0010] Preferably, the induction plate is an aluminum plate.

[0011] Preferably, the C-shaped rail is connected to a side plane of the connecting plate by a plurality of bolts.

[0012] Preferably, the sensing plate is mounted on a side plane of the connecting plate by means of a plurality of screws and an adhesive.

[0013] A method for preparing the assembled F rail for a maglev train as described above comprises the following steps: S1. C-type rail production: bend and overlap several straight metal or metal alloy plates to form a C-type rail, drill connecting holes for the C-type rail, and then apply anti-corrosion materials respectively after completion; S2. Production of connecting plate: Cutting connecting plate, machining and drilling connecting holes in the connecting area of ​​C-rail and induction plate, and applying anti-corrosion materials after completion; S3, assembling: bending and stacking a number of straight metal or metal alloy plates together and installing them on one side of the connecting plate by bolts; S4, magnetic pole surface processing: the magnetic pole surface of the assembled rail row is processed as a whole; S5. Flatness detection of the pole surface: After the pole surface is processed, the flatness of the pole surface will be detected using a flatness detection tool; S6. Installation of the induction plate: Install the induction plate on the other side of the connecting plate using adhesive and screws.

[0014] The present invention has the following advantages over the prior art: The assembled F rail for a maglev train of the present invention adopts a detachable C-shaped rail installed on one side of a connecting plate to replace the existing rolled F rail, which can solve the problem that the rail material needs to be customized and the material procurement cost is high; the detachable connection mode is not only convenient for installation and disassembly, but also can adjust the tightness of the connection to a certain extent to adapt to different use environments and requirements, and simplifies the processing, installation and debugging process of the F rail to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a structural schematic diagram of an assembled F rail for a maglev train in an embodiment of the present invention; Figure 2 Schematic diagram of the structure of the connecting plate and the sensing plate in an embodiment of the present invention.

[0017] Reference numerals: 1. Connecting plate; 2. Induction plate; 3. C-type rail; 4. Pole surface processing area. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention are clearly and completely described below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 , 2 As shown, an embodiment of the present invention provides an assembled F-rail for a maglev train, comprising a connecting plate 1, an induction plate 2 and a C-rail 3, wherein the induction plate 2 and the C-rail 3 are respectively detachably arranged on two opposite surfaces of the connecting plate 1, the induction plate is an aluminum plate, the C-rail 3 and the connecting plate 1 form an F-shaped structure, and a magnetic pole surface processing area 4 is provided on the end surface of the C-rail 3.

[0020] In this embodiment, the C-shaped rail 3 is composed of three ordinary thin steel plates that are bent and overlapped. The thickness of the three steel plates are 10mm, 10mm, and 8mm from the outside to the inside. Considering that thick steel plates (such as 20mm (or 15mm) thick steel plates) are difficult to bend, have large bending radius, minimum bending side length, and low material utilization, thin steel plates (such as 3mm (or 5mm)) are too thin, easy to deform, and the stress condition is not ideal. Therefore, the C-shaped rail of this embodiment is composed of three steel plates that are bent, and the thickness of the three metal or metal alloy plates are 10mm, 10mm, and 8mm from the outside to the inside. The disadvantages of using one steel plate (38mm thick) and two steel plates (20mm thick and 8mm thick) can be avoided. The number of metal or metal alloy plates in the C-shaped rail 3 is related to the strength of the metal or metal alloy plates themselves. In other embodiments, if the strength of the metal or metal alloy plates themselves is relatively high, a thinner thickness can also meet the strength requirements and is not easily deformed. The number of metal or metal alloy plates in the C-shaped rail 3 can be appropriately increased or decreased according to actual needs.

[0021] In this embodiment, the transverse width of the C-rail 3 is 220 mm. Limited by the bending capacity of the bending equipment, the length of a single C-rail is generally not more than 3 meters. The C-rail 3 is installed on the lower plane of the connecting plate through a bolt connector. Each bolt connector is a group of four bolts. Each group of four bolts forms a square with an adjacent spacing of 120 mm. The side length midline of the square coincides with the length direction midline of the C-rail 3. The spacing between each group of bolts is 1200 mm, which can be appropriately adjusted while ensuring the connection strength and rigidity; the bolt connection method is not only convenient for installation and disassembly, but also can adjust the tightness of the connection to a certain extent to adapt to different use environments and requirements.

[0022] In this embodiment, the induction plate 2 is installed on the upper plane of the connecting plate 1 by means of a plurality of screws and adhesives. An aluminum plate is preferably used as the induction plate 2. The aluminum plate is used as the induction plate of the medium and low speed magnetic levitation linear motor. Its material is generally not replaceable (unless in special circumstances). Its width is 220 mm, and its length can be flexibly adjusted according to the length of the C-rail.

[0023] In this embodiment, the bending angles of the three steel plates are 90 to 100°, and the bending angle of the steel plates is preferably 90°. According to the capacity of the bending equipment and the force conditions between the electromagnet and the C-rail, it can be flexibly adjusted on this basis, generally between 90 and 100 degrees (refer to the rolled F rail).

[0024] In this embodiment, the C-shaped rail 3 itself is in the shape of a "C", which has certain advantages in terms of mechanical structure. The open portion of the C-shaped rail 3 can be conveniently connected to other components, while its closed arc portion can effectively disperse stress. When subjected to a load perpendicular to the plane of the rail, the arc-shaped wall of the C-shaped rail 3 can, like an arch structure, transfer the pressure to the bottom and both sides of the rail along the arc path, rather than concentrating it on a certain point. For example, in a building structure, the arch structure can bear a large weight, which utilizes the principle of dispersing pressure.

[0025] In this embodiment, the connecting plate 1 plays an important role in connecting the C-rail and the H-rail sleeper in the entire structure. As a load-bearing structure, it needs to have sufficient strength and rigidity to ensure the safe and reliable operation of the track system. The presence of the connecting plate 1 enables adjacent C-rails to work together to form an integral structure. From a mechanical point of view, when a C-rail 3 is subjected to a local load, this load will be transferred to the sleeper through the connecting plate 1. This load transfer mechanism is similar to the interaction between beams and columns in a frame structure. Multiple components share the external force, thereby avoiding deformation or damage to a single component due to excessive stress. Therefore, the connecting plate 1 is tightly connected to the C-rail 3 by bolts, so that the rail row has a certain strength and stability, and can withstand the corresponding load in practical applications.

[0026] The assembled F-rail for the maglev train of this embodiment adopts three bent and overlapped steel plates to form a C-rail 3 installed under the connecting plate, replacing the rolled F-rail, which can solve the problem that the rail material needs to be customized and the material procurement cost is high; the bolt connection method can also simplify the processing, installation and debugging process of the F-rail to a certain extent.

[0027] A method for preparing the assembled F rail for a maglev train as described above comprises the following steps: S1. C-type rail 3 production: three straight steel plates are bent and stacked together to form the C-type rail 3. The thickness of the three steel plates are 10mm, 10mm, and 8mm respectively. The three steel plates are bent so that they can be stacked together to form the C-type rail 3. The length of a single steel plate is not more than 3 meters and not more than the length of the connecting plate. The connecting holes of the C-type rail 3 are drilled and then coated with anti-corrosion materials respectively after completion; S2, production of the connecting plate 1: cutting the connecting plate 1, drilling the connecting holes of the three C-shaped rails 3 that are bent and stacked together, and applying anti-corrosion materials after completion; S3, assembly: bend and overlap three straight steel plates and install them on one side of the connecting plate by bolts; S4, Pole surface processing: The assembled rail array is processed with the pole surface as a whole, and the pole surface height is 30mm. To ensure the flatness of the pole surface ( Figure 1 The black mark in the middle is the pole surface processing area 4). The pole surface is polished and coated with anti-corrosion materials. The purpose of polishing is to remove the processing burrs. Grind until there are no burrs. S5. Flatness detection of the pole surface: After the pole surface is processed, a flatness detection tool (such as a level ruler, etc.) will be used to detect the flatness of the pole surface. If local protrusions or depressions are detected, local grinding will be used to correct them. During grinding, grinding paste and grinding tools are used to perform fine grinding in areas with large flatness deviations. Repeated testing and grinding are performed until the flatness of the pole surface meets the requirements. To ensure the flatness of the pole surface, a high-precision milling machine is usually used when processing the pole surface of the assembled rail as a whole. During the processing, the rail must first be firmly fixed on the workbench of the processing equipment to prevent vibration and displacement during the processing; then, a suitable tool is used to perform plane milling according to the pre-set processing parameters; S6. Install the induction plate 2: Install the induction plate 2 on the other side of the connecting plate 1 by means of adhesive and screws.

[0028] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An assembled F rail for a maglev train, characterized in that: The invention comprises a connecting plate (1), an induction plate (2) and a C-shaped rail (3), wherein the induction plate (2) and the C-shaped rail (3) are respectively arranged on two opposite surfaces of the connecting plate (1) in a detachable manner, the C-shaped rail (3) and the connecting plate (1) form an F-shaped structure, and a magnetic pole surface processing area (4) is provided on the end surface of the C-shaped rail (3).

2. The assembled F rail for a maglev train according to claim 1, characterized in that: The C-shaped rail (3) is composed of a plurality of metal or metal alloy plates that are bent and overlapped.

3. The assembled F rail for a maglev train according to claim 2, characterized in that: The C-shaped rail (3) is composed of three steel plates that are bent and overlapped.

4. The assembled F rail for a maglev train according to claim 3, characterized in that: The thickness of the outer steel plate among the three steel plates is greater than the thickness of the inner steel plate.

5. The assembled F rail for a maglev train according to claim 3, characterized in that: The thicknesses of the three steel plates are 10±1mm, 10±1mm, and 8±1mm from the outside to the inside, respectively.

6. The assembled F rail for a maglev train according to claim 2, characterized in that: The bending angle of the metal or metal alloy plate is 90-100°.

7. The assembled F rail for a maglev train according to any one of claims 1 to 6, characterized in that: The induction plate (2) is an aluminum plate.

8. The assembled F rail for a maglev train according to any one of claims 1 to 6, characterized in that: The C-shaped rail (3) is connected to a side plane of the connecting plate (1) via a plurality of bolts.

9. The assembled F rail for a maglev train according to any one of claims 1 to 6, characterized in that: The sensing plate (2) is mounted on a side plane of the connecting plate (1) by means of a plurality of screws and adhesive.

10. A method for preparing an assembled F rail for a maglev train according to any one of claims 1 to 9, characterized in that: The steps are as follows: S1, C-shaped rail (3) production: a plurality of straight metal or metal alloy plates are bent and stacked together to form a C-shaped rail (3), connecting holes are drilled in the C-shaped rail (3), and after completion, anti-corrosion materials are applied to each of them; S2. Making the connection plate (1): Cutting the connection plate, machining the connection area between the C-rail (3) and the induction plate (2) and drilling the connection holes, and applying anti-corrosion materials after completion; S3, assembling: bending and stacking a plurality of straight metal or metal alloy plates together and mounting them on one side of the connecting plate (1) by means of bolts; S4, magnetic pole surface processing: the magnetic pole surface of the assembled rail row is processed as a whole; S5. Flatness detection of the pole surface: After the pole surface is processed, the flatness of the pole surface will be detected using a flatness detection tool; S6. Install the induction plate (2): Install the induction plate (2) on the other side of the connecting plate (1) by means of adhesive and screws.

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