A movable steel track beam and its adjustment system

Abstract

The present invention discloses a movable steel track beam and its adjustment system. The movable steel track beam includes a load-bearing beam at the top and a plurality of vertical support beams. Each of the support beams is a pipeline structure. The inner cavities of the pipelines are connected and a fluid medium injection port is provided at the upper part and a fluid medium discharge port is provided at the lower part. The overall mass of the movable steel track beam can be increased by injecting the fluid medium into the inner cavity of the pipeline from the medium injection port, and the overall mass of the movable steel track beam can be reduced by discharging the fluid medium in the inner cavity of the pipeline from the medium injection and discharge port. The track beam can reduce the self-vibration of the movable steel track beam, avoid coupling resonance with the magnetic levitation vehicle system, and facilitate the inspection and maintenance of peripheral equipment such as guide electromagnets and guide gap sensors; at the same time, the characteristic parameters of the movable steel track beam can also be detected as technical parameters for the design and construction of other beam types.

Description

Technical Field

[0001] The present invention relates to the field of rail transit technology, and in particular to a technology for detecting the coupled vibration of a movable steel rail beam and a magnetic levitation technology rail transit vehicle system and a coupled vibration coefficient of the vehicle system. Background Art

[0002] The maglev train relies on electromagnetic attraction and electric repulsion to suspend the train in the air and guide it, achieving no mechanical contact between the train and the ground track, and then uses a linear motor to drive the train to move.

[0003] Although maglev trains still belong to rail transportation systems and retain the characteristics of traditional locomotives and vehicles such as tracks, switches, vehicle bogies and suspension systems, since there is no mechanical contact between the train and the track during traction movement, the problems of wheel-rail adhesion limitations, mechanical noise and wear of traditional trains are fundamentally overcome.

[0004] High-speed maglev trains are different from previous wheel-rail trains. They mostly use closed elevated bridges and run on track beams at a certain height. Therefore, the track beams are the main load-bearing and force-transmitting structures and are one of the important parts of the design of high-speed maglev passenger transport systems.

[0005] In order to meet the technical requirements of diverse application scenarios of the maglev transportation system, there are various types of track beams, such as precast concrete track beams, steel structure track beams and steel-concrete hybrid beams. Among them, the movable steel track beam has the characteristics of simple structure and light weight. Since it can be moved, it can meet the inspection and maintenance needs of peripheral equipment such as guide electromagnets and guide gap sensors.

[0006] However, due to the light weight of the movable steel track beam, it is easy to couple and resonate with the maglev vehicle system, affecting the comfort and safety of the vehicle operation. Summary of the invention

[0007] The purpose of the present invention is to provide a movable steel track beam with adjustable natural frequency and detectable coupling vibration coefficient.

[0008] Another object of the present invention is to provide an adjustment system for adjusting the movable steel track beam.

[0009] To achieve the above-mentioned purpose, the present invention provides a movable steel track beam, comprising a load-bearing beam located at the top and a plurality of vertical support beams supporting the load-bearing beam, wherein each of the support beams is a pipeline structure, wherein the inner cavities of the pipelines are connected and a fluid medium injection port is provided at the upper portion and a fluid medium discharge port is provided at the lower portion, and the overall mass of the movable steel track beam can be increased by injecting the fluid medium into the inner cavity of the pipeline from the fluid medium injection port, and the overall mass of the movable steel track beam can be reduced by discharging the fluid medium in the inner cavity of the pipeline from the fluid medium discharge port, thereby changing the characteristics of the movable steel track beam and allowing the movable steel track beam and the magnetic levitation vehicle system to avoid the limit value of the coupling resonance coefficient.

[0010] Optionally, each of the support beams is in an "A" shape, including a first oblique support tube located on one side and a second oblique support tube located on the other side, the first oblique support tube and the second oblique support tube are arranged symmetrically on the left and right, and their tops are connected to each other through a transverse support tube.

[0011] Optionally, staggered damping plates are provided on both sides of the inner cavities of the first oblique support tube and the second oblique support tube, and projections of the damping plates at least partially overlap in the length direction of the first oblique support tube and the second oblique support tube.

[0012] Optionally, the cross-sections of the first oblique support tube, the second oblique support tube and the transverse support tube are in the shape of a hollow rectangle.

[0013] Optionally, the front panel and the rear panel of the first oblique support tube, the second oblique support tube and the transverse support tube are an integrated structure.

[0014] Optionally, a supporting rib is provided on the inner top of the transverse support tube.

[0015] Optionally, fluid medium discharge ports are respectively provided on the inner sides of the first oblique support tube and the second oblique support tube at positions close to the bottom.

[0016] Optionally, the fluid medium is water or sand.

[0017] To achieve the other purpose mentioned above, the present invention provides a movable steel track beam adjustment system, comprising a medium storage box, a filling device and the movable steel track beam described in any one of the above items, wherein the medium storage box is used to store fluid medium, the input end of the filling device is connected to the medium storage box, and the output end of the filling device is connected to the fluid medium injection port of the movable steel track beam to inject the fluid medium in the medium storage box into the pipeline inner cavity of the movable steel track beam.

[0018] Optionally, the volume of the medium storage box is greater than or equal to the volume of the pipeline inner cavity of the movable steel track beam.

[0019] The movable steel track beam provided by the present invention is not only light and movable, but also has a supporting beam of a pipeline structure, the inner cavity of the pipeline is connected and a fluid medium injection port is provided at the upper part and a fluid medium discharge port is provided at the lower part. By injecting the fluid medium into the inner cavity of the pipeline, the overall mass of the movable steel track beam can be increased or reduced, and the characteristics of the movable steel track beam can be changed. When the magnetic suspension vehicle system passes through the movable steel track beam, the fluid medium in the movable steel track beam interacts with its structure to produce a damping effect, reduce the self-vibration of the movable steel track beam, and avoid coupling resonance with the magnetic suspension vehicle system. Moreover, by discharging the fluid medium, the movable steel track beam can be moved, and the peripheral equipment such as the guide electromagnet and the guide gap sensor can be inspected and maintained. In addition, during adjustment, the movable steel track beam can also be optimally configured to achieve the limit value of the coupling resonance coefficient between the two; at the same time, the characteristic parameters of the movable steel track beam can also be detected, which can be used as technical parameters for the design and construction of other beam types to guide the optimal configuration of the engineering construction and reduce a certain construction cost.

[0020] The movable steel track beam adjustment system provided by the present invention is provided with the movable steel track beam. Since the movable steel track beam has the above-mentioned technical effects, the movable steel track beam adjustment system provided with the movable steel track beam also has corresponding technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a movable steel track beam provided by an embodiment of the present invention;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of the support beam shown in FIG.

[0023] Figure 3 for Figure 2 Schematic diagram of the internal structure of the support beam shown.

[0024] In the figure:

[0025] 10. Bearing beam 20. Support beam 21. Fluid medium injection port 22. Fluid medium discharge port 23. First oblique support pipe 24. Second oblique support pipe 25. Transverse reinforcement beam 26. Transverse support pipe 27. Support foot 28. Oblique reinforcement beam 29. Support rib plate 210. Damping plate DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] In this article, the terms "upper, lower, inside, outside" and the like are established based on the positional relationships shown in the drawings. The corresponding positional relationships may also change depending on the drawings, and therefore cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 1 A schematic structural diagram of a movable steel track beam provided by an embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the support beam shown in FIG. Figure 3 for Figure 2 Schematic diagram of the internal structure of the support beam

[0029] In a specific embodiment, the movable steel track beam provided by the present invention is mainly suitable for a magnetic levitation rail transit system, and is mainly composed of a load-bearing beam 10 and a plurality of vertical support beams 20 located below the load-bearing beam 10. The load-bearing beam 10 is located at the top of the support beam 20 and generally presents a rectangular frame structure. Each support beam 20 is a pipeline structure, and the inner cavity of the pipeline is interconnected and the periphery is sealed, with only upper and lower openings to form a fluid medium injection port 21 at the upper portion and a fluid medium discharge port 22 at the lower portion.

[0030] During actual testing, the overall mass of the movable steel track beam can be increased by injecting the fluid medium into the inner cavity of the pipeline from the fluid medium injection port 21, and the overall mass of the movable steel track beam can be reduced by discharging the fluid medium in the inner cavity of the pipeline from the fluid medium discharge port 22. Since the mass of the movable steel track beam can be increased or decreased, its parameters can be flexibly adjusted according to the changes of different maglev trains.

[0031] Specifically, each support beam 20 is generally in the shape of an "A", and is mainly composed of a first oblique support tube 23 located on one side and a second oblique support tube 24 located on the other side. The first oblique support tube 23 and the second oblique support tube 24 are arranged symmetrically on the left and right, and a transverse reinforcement beam 25 is provided therebetween. The tops are connected to each other through a transverse support tube 26. The lower ends of the first oblique support tube 23 and the second oblique support tube 24 are respectively provided with supporting feet 27 so as to be connected to a frame further arranged below or a frame in the foundation.

[0032] In order to further improve the structural strength of the movable steel track beam, an oblique reinforcement beam 28 may be provided between adjacent support beams.

[0033] The cross-section of the first oblique support tube 23, the second oblique support tube 24 and the transverse support tube 26 is a hollow rectangular shape, and the front and rear panels of the first oblique support tube 23, the second oblique support tube 24 and the transverse support tube 26 are an integrated structure, and the inner top of the transverse support tube 26 is provided with a support rib 29.

[0034] The inner cavities of the first oblique support tube 23 and the second oblique support tube 24 are provided with staggered damping plates 210 on both sides, and in the length direction of the first oblique support tube 23 and the second oblique support tube 24, the projections of the damping plates 210 at least partially overlap.

[0035] By designing staggered damping plates 210 inside the first oblique support tube 23 and the second oblique support tube 24, a blocking effect can be achieved when the fluid medium vibrates, thereby making full use of the flow characteristics of the fluid medium to produce a damping effect, which can better meet the design requirements of the present invention.

[0036] The fluid medium injection port 21 is located on the front panel of the horizontal support tube 26, and the inner sides of the first oblique support tube 23 and the second oblique support tube 24 are respectively provided with fluid medium discharge ports 22 near the bottom. The fluid medium injected into the inner cavity of the pipeline can be liquid or solid, such as water or sand.

[0037] Taking water as a fluid medium as an example, water is injected into the inner cavity of the pipeline of the movable steel track beam through a water pump, which can increase or decrease the overall mass of the movable steel track beam, thereby changing the characteristics of the movable track beam. In this way, when the maglev vehicle passes through the movable steel track beam, the water in the movable steel track beam interacts with its internal structure to produce a damping effect, reduce the self-vibration of the movable steel track beam, and avoid coupling resonance with the maglev vehicle system.

[0038] By draining the water from the inside of the movable steel track beam, the movable steel track beam can be moved, and then the peripheral equipment such as the guide electromagnet and the guide gap sensor can be inspected and maintained in the vacated space.

[0039] Moreover, when the characteristics of the movable steel track beam change so that the two are no longer in coupling resonance, the mass of the movable track beam can be detected, its characteristics can be deduced, and the corresponding parameters obtained can serve as an important basis for guiding engineering applications.

[0040] The movable steel track beam is light and movable, easy to maintain, and has adjustable configuration parameters. Therefore, it can be applied to various different maglev trains to achieve multiple uses of one beam. By using the track beam, the coupling vibration coefficient can be effectively avoided. At the same time, the characteristics of the track beam can be fed back to guide engineering application construction, effectively configure, and reduce costs.

[0041] The above embodiments are only preferred solutions of the present invention, and are not limited thereto. On this basis, targeted adjustments can be made according to actual needs to obtain different implementation methods. For example, the cross-sections of the first oblique support tube 23, the second oblique support tube 24, and the transverse support tube 26 are designed to be circular, or the first oblique support tube 23 and the second oblique support tube 24 are designed to be H-shaped, etc. Since there are many possible implementation methods, they will not be described one by one here.

[0042] In addition to the above-mentioned movable steel track beam, the present invention also provides a movable steel track beam adjustment system, including a medium storage box, a filling device and the movable steel track beam described above. The medium storage box is used to store fluid medium and can be arranged nearby the side of the movable steel track beam.

[0043] If the fluid medium is water, the filling device can be a water pump. The input end of the water pump is connected to the medium storage tank, and the output end of the water pump is connected to the fluid medium injection port of the movable steel track beam. The water in the medium storage tank can be injected into the pipeline cavity of the movable steel track beam through the water pump. During the injection process, it is easy to read the amount of water increase or decrease, so as to obtain the overall quality and characteristic parameters of the movable steel track beam.

[0044] It should be noted here that the volume of the medium storage box should be greater than or equal to the volume of the pipeline inner cavity of the movable steel track beam so as to be able to store enough fluid medium to meet the actual regulation needs.

[0045] This adjustment system can solve the current problem of vehicle-track coupling vibration under the premise of ensuring that the steel beam is movable and that the maglev vehicle can be inspected and repaired off-board. Through this system, the movable steel track beam can be applied to various maglev vehicles, and the vehicle-track coupling vibration coefficient can be detected to guide engineering construction.

[0046] The movable steel track beam and its adjustment system provided by the present invention are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the core idea of ​​the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A movable steel track beam, characterized in that: The invention comprises a load-bearing beam (10) located at the top and a plurality of vertical support beams (20) supporting the load-bearing beam (10); each of the support beams (20) is a pipeline structure, the inner cavities of the pipelines are connected and a fluid medium injection port (21) is provided at the top and a fluid medium discharge port (22) is provided at the bottom; the overall mass of the movable steel track beam can be increased by injecting fluid medium into the inner cavity of the pipeline from the fluid medium injection port (21); and the overall mass of the movable steel track beam can be reduced by discharging the fluid medium in the inner cavity of the pipeline from the fluid medium discharge port (22).

2. The movable steel track beam according to claim 1, characterized in that: Each of the support beams (20) is in an "A" shape, and comprises a first oblique support tube (23) located on one side and a second oblique support tube (24) located on the other side; the first oblique support tube (23) and the second oblique support tube (24) are arranged symmetrically on the left and right, and their tops are connected to each other via a transverse support tube (26).

3. The movable steel track beam according to claim 2, characterized in that: The inner cavities of the first oblique support tube (23) and the second oblique support tube (24) are provided with staggered damping plates (210) on both sides, and in the length direction of the first oblique support tube (23) and the second oblique support tube (24), the projections of the damping plates (210) at least partially overlap.

4. The movable steel track beam according to claim 3, characterized in that: The cross-sections of the first oblique support tube (23), the second oblique support tube (24) and the transverse support tube (26) are in the shape of a hollow rectangle.

5. The movable steel track beam according to claim 4, characterized in that: The front panel and the rear panel of the first oblique support tube (23), the second oblique support tube (24) and the transverse support tube (26) are an integrated structure.

6. The movable steel track beam according to claim 5, characterized in that: A supporting rib plate (29) is provided on the inner top of the transverse support tube (26).

7. The movable steel track beam according to claim 6, characterized in that: The first oblique support tube (23) and the second oblique support tube (24) are respectively provided with fluid medium discharge ports (22) on their inner sides near the bottom.

8. The movable steel track beam according to claim 7, characterized in that: The fluid medium is water or sand.

9. A movable steel track beam adjustment system, characterized in that: It comprises a medium storage box, a filling device and a movable steel track beam as described in any one of claims 1 to 8, wherein the medium storage box is used to store fluid medium, the input end of the filling device is connected to the medium storage box, and the output end of the filling device is connected to the fluid medium injection port of the movable steel track beam so as to inject the fluid medium in the medium storage box into the pipeline cavity of the movable steel track beam.

10. The movable steel track beam adjustment system according to claim 9, characterized in that: The volume of the medium storage box is greater than or equal to the volume of the pipeline inner cavity of the movable steel track beam.

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