A maglev ballastless track

Abstract

The present invention discloses a magnetic levitation ballastless track, comprising: steel rails installed at designated positions on the track plate through fasteners; a vibration-damping layer installed under the track plate to provide a certain vibration-damping effect for the track structure; an electromagnet is provided between the track plate and the vibration-damping layer to achieve the suspension of the track plate, and the track elevation can be adjusted by adjusting the lifting repulsive force of the electromagnet; a base plate is located below the vibration-damping layer; a limiting structure passes through the reserved pile holes of the base plate to limit and adjust the spatial position of the track plate in the longitudinal, transverse and vertical directions. The present invention can meet the accuracy requirements for laying the track structure during the construction phase, and can also meet the adjustment requirements for different degrees of foundation deformation during the operation phase. Due to the provision of a magnetic levitation system, the mechanical state between layers is effectively improved, and interlayer disease problems can be avoided; the requirements for interlayer flatness are significantly reduced; and it has a good vibration-damping effect.

Description

Technical Field

[0001] The present invention relates to the field of track structures, in particular to a magnetic levitation track structure. Background Art

[0002] Currently, the primary track type used in China's high-speed railways is ballastless track. Due to its uniform stiffness, robust structure, and stable operation, ballastless track is widely used on various backbone lines and will continue to be a key track structure for future high-speed railway development and construction. However, traditional ballastless track faces numerous challenges in terms of laying, service, maintenance, and repair. For example, during track laying, the quality of factory-fabricated track components and the on-site paving process often fail to meet the required track smoothness standards. The vibration and noise generated during train operation not only create a poor riding experience for passengers but also disrupt the lives of surrounding residents. The track structure is susceptible to structural damage under the effects of long-term train fatigue loads and environmental factors, which can affect its durability and service life. When the track structure is damaged during operation, repairing and replacing damaged parts can easily cause secondary damage to the track structure.

[0003] Most scholars have conducted in-depth research on the problems faced by traditional ballastless track during laying, service, maintenance, and repair, and have proposed relatively reasonable solutions. However, they have not been able to effectively address the problems of track structure flatness during laying and repair, the vibration and interlayer damage caused by the track structure during operation, and the secondary damage to the track structure caused by maintenance and repair. How to overcome these problems of ballastless track has become a difficult problem for the further development of track structure at this stage. Therefore, the design of a new track structure is considered to better meet the requirements of rapid and accurate adjustment of the track structure, vibration reduction, and disease reduction. Summary of the Invention

[0004] The purpose of the present invention is to provide a new type of magnetic levitation ballastless track in view of the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a magnetic levitation ballastless track comprising: a rail 1, a track slab 2, a vibration-damping layer 3, a base plate 4, an electromagnet 5, and a limiting structure 6. The rail 1 is mounted on the track slab 2 via fasteners; the vibration-damping layer 3 is mounted below the track slab 2; and the base plate 4 is mounted below the vibration-damping layer 3. Electromagnets 5 are provided on the upper and lower sides of the vibration-damping layer 3, respectively, to generate a non-contact lifting repulsive force between the track slab 2 and the base plate 4, thereby levitating the track slab 2. The vertical spacing between the magnetic levitation ballastless track elements is adjusted by adjusting the magnitude of the lifting repulsive force, thereby maintaining the magnetic levitation ballastless track in a suspended state. The limiting structures 6 are located on both sides of the track slab 2, pass through pre-reserved stake holes in the base plate 4, and are fixed to the base plate 4. The limiting structures 6 are used to limit or adjust the spatial position of the track slab 2 in the longitudinal, transverse, and vertical directions.

[0006] The electromagnets 5 are installed in the track plate 2 and the base plate 4 respectively.

[0007] Or, in another form:

[0008] The electromagnets 5 are respectively installed on the lower surface of the track plate 2 and the upper surface of the base plate 4 .

[0009] Preferably, the track plate 2 and the base plate 4 can both be prefabricated or cast-in-place structures, and the shapes and sizes of the track plate 2 and the base plate 4 are adapted to the limiting structure 6 .

[0010] Preferably, the vibration damping layer 3 is made of composite rubber material.

[0011] Preferably, the limiting structure 6 is connected to the track plate 2 via bolts, and the track plate 2 can be fine-tuned by adjusting the bolt state between the limiting structure 6 and the track plate 2.

[0012] Preferably, wing plate structures 7 inserted into the limiting structure 6 are integrally provided on both sides of the track plate 2 .

[0013] Beneficial effects:

[0014] The present invention provides a magnetic levitation ballastless track, which uses a magnetic levitation device based on the principles of electricity and magnetism to control the magnitude of the magnetic levitation force to adjust the vertical distance between the track plate and the base plate, so as to meet the smoothness standards to be achieved when laying the track plate on the ballastless track and adjust the spatial position deviation of the track structure during subsequent maintenance and repair.

[0015] Compared with traditional ballastless track, the maglev ballastless track structure has the following advantages: ① It can reduce the precision requirements for the flatness of the track slabs and base plates during factory manufacturing or on-site casting, greatly improving the smoothness of the track system during installation. ② It can adapt to a certain degree of foundation deformation without destroying the track structure, improving the adjustability of the track structure during operation. ③ The main non-contact force between the track slabs and base plates of the maglev ballastless track structure is magnetic force, which effectively improves the mechanical state between the layers and avoids the occurrence of interlayer diseases in traditional track structures caused by environmental factors such as rain and complex loads, thereby extending the maintenance cycle of the track structure. ④ The application of the magnetic levitation system between the track structures can achieve a good vibration reduction effect during train operation. The vibration reduction structure layer can also ensure operational safety in the event of failure of the maglev function.

[0016] The present invention optimizes the traditional ballastless track structure, solves most problems of traditional ballastless tracks, and has broad application prospects in future ballastless track lines.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, which will become apparent from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a magnetic levitation ballastless track structure system provided by the present invention;

[0019] Figure 2 A schematic cross-sectional view of a magnetic levitation ballastless track structure system provided by the present invention;

[0020] Figure 3 A schematic longitudinal section diagram of a magnetic levitation ballastless track structure system provided by the present invention;

[0021] Figure 4 A top view of a magnetic levitation ballastless track structure system provided by the present invention;

[0022] Figure 5 A detailed diagram of a limiting structure of a magnetic levitation ballastless track structure system provided by the present invention;

[0023] Figure 6 A detailed diagram of a track plate of a magnetic levitation ballastless track structure system provided by the present invention;

[0024] Explanation of the accompanying figures: 1. Rail; 2. Track plate; 3. Vibration damping layer; 4. Base plate; 5. Electromagnet; 6. Limiting structure; 7. Wing plate structure. DETAILED DESCRIPTION

[0025] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the following detailed description is illustrative rather than restrictive and should not be used to limit the scope of protection of the present invention.

[0026] like Figures 1-6 As shown in the figure, a magnetic levitation ballastless track of the present invention comprises: a rail 1, fasteners, a track plate 2, a vibration-damping layer 3, a base plate 4, an electromagnet 5, and a limiting structure 6. The rail 1 is mounted to a designated position on the track plate 2 via the fasteners; the vibration-damping layer 3 is mounted below the track plate 2; the base plate 4 is mounted below the vibration-damping layer 3; the electromagnet 5 is mounted within the track plate 2 and the base plate 4 to achieve levitation of the track plate 2; and the limiting structure 6 passes through a pre-reserved hole in the base plate 4 and is mounted at a designated position on the base plate 4. In this case, the limiting structure 6 is located on both sides of the track plate 2.

[0027] In the magnetic levitation ballastless track structure of the present invention, electromagnets 5 are installed within the track slab 2 and the base plate 4, or alternatively, on the lower surface of the track slab 2 or the upper surface of the base plate 4. This generates a non-contact lifting repulsive force between the track slab 2 and the base plate 4. The magnitude of the lifting repulsive force generated by the electromagnets 5 is variable, and adjusting the magnitude of this repulsive force can adjust the vertical spacing between the track structures, keeping the track structures in a suspended state.

[0028] When uneven foundation deformation occurs, the local parameters of the electromagnet 5 can be adjusted to meet the track smoothness requirements.

[0029] Both the track plate 2 and the base plate 4 can be prefabricated or cast-in-place. The track plate 2 is integrally provided with wing plate structures 7 on both sides thereof for insertion into the limiting structure 6. The wing plate structures 7 are designed to be compatible with the limiting structure 6. The shape and size parameters of the track plate 2 and the base plate 4 can be designed in a variety of ways depending on the form of the limiting structure 6.

[0030] The vibration-damping layer 3 is located below the track plate 2 and above the base plate 4, closely adhering to the base plate 4. This layer prevents stress concentration between the track plate 2 and the base plate 4 when a train passes through. It also provides a certain degree of vibration reduction, ensuring safe operation even in the event of a maglev failure.

[0031] The vibration-damping layer 3 is made of a composite rubber material with good elasticity, or other materials that can provide the same elastic supporting capability.

[0032] The limiting structure 6 passes through the reserved pile holes of the base plate 4 and is fixed on the base plate 4. At this time, the limiting structure 6 is located on both sides of the track plate 2 and is used to limit and adjust the spatial position of the track plate 2 in the longitudinal, transverse and vertical directions.

[0033] The limiting structure 6 is connected to the track plate 2 by bolts. When the adjustment capability of the electromagnet 5 cannot meet the high precision requirement, the track plate 2 can be fine-tuned by adjusting the bolt state of the limiting structure 6 and the track plate 2.

[0034] It can be seen from the structural scheme provided by the embodiments of the above invention that the patent of the present invention provides a magnetic levitation track structure, which uses a magnetic levitation device based on the principles of electricity and magnetism to control the magnitude of the magnetic levitation force to adjust the vertical spacing between the track plate and the base plate, so as to meet the smoothness standards to be achieved in laying the track plate on the ballastless track and adjust the spatial position deviation of the track structure during subsequent maintenance and repair.

[0035] The embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

Claims

1. A magnetic levitation ballastless track, characterized in that: include: Rail (1), track plate (2), vibration damping layer (3), base plate (4), electromagnet (5), and limiting structure (6); The steel rail (1) is mounted on the track plate (2) via fasteners; The vibration-damping layer (3) is installed on the lower part of the track plate (2); The base plate (4) is installed on the lower part of the vibration-damping layer (3); Electromagnets (5) are respectively provided on the upper and lower sides of the vibration-damping layer (3), so that a non-contact lifting repulsive force is generated between the track plate (2) and the base plate (4), thereby achieving the suspension of the track plate (2); the vertical spacing between the magnetic levitation ballastless tracks is adjusted by adjusting the magnitude of the lifting repulsive force, so that the magnetic levitation ballastless track is in a suspended state; The limiting structure (6) is located on both sides of the track plate (2), and the limiting structure (6) passes through the reserved pile holes of the base plate (4) and is fixed on the base plate (4), and is used to limit or adjust the spatial position of the track plate (2) in the longitudinal, transverse and vertical directions; The track plate (2) and the base plate (4) can both be prefabricated or cast-in-place structures, and the shapes and sizes of the track plate (2) and the base plate (4) are adapted to the limiting structure (6); The limiting structure (6) is connected to the track plate (2) via bolts, and the track plate (2) can be fine-tuned by adjusting the bolt state between the limiting structure (6) and the track plate (2); Both sides of the track plate (2) are integrally provided with wing plate structures (7) inserted into the limiting structure (6).

2. The magnetic levitation ballastless track according to claim 1, characterized in that: The electromagnets (5) are respectively installed in the track plate (2) and the base plate (4).

3. The magnetic levitation ballastless track according to claim 1, characterized in that: The electromagnets (5) are respectively mounted on the lower surface of the track plate (2) and the upper surface of the base plate (4).

4. The magnetic levitation ballastless track according to claim 1, characterized in that: The vibration-damping layer (3) is made of composite rubber material.

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