Three-way prestress low-magnetic-resistance track beam

Abstract

The utility model discloses a three-way prestress low-magnetic-resistance track beam which comprises a first side beam, a second side beam, a first center beam, a second center beam, a main beam, a first auxiliary beam and a second auxiliary beam. The first center beam and the second center beam are arranged on the two sides of the main beam respectively, the first center beam and the first side beam are connected through the first auxiliary beam, and the second center beam and the second side beam are connected through the second auxiliary beam. Steel bars in the first side beam, the second side beam, the first center beam, the second center beam, the main beam, the first auxiliary beam and the second auxiliary beam are all low-magnetism steel bars, and the adjacent steel bars are bundled through insulating materials. According to the scheme, the reinforcing mesh in the track beam shaped like the Chinese character'chuan 'adopts a low-magnetic material and an insulating binding technology, so that a magnetic field generated by the track beam shaped like the Chinese character'chuan' can be effectively reduced, and interference to electronic equipment and a communication system in the surrounding environment is reduced. The operation energy consumption of the electromagnetic pry can be effectively reduced, the energy consumption is reduced, and the operation cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of track design technology, and in particular to a three-dimensional prestressed low magnetic reluctance track beam. Background Technology

[0002] The electromagnetic sled system is a new generation of ultra-high-speed ground dynamic test facility. It aims to use electromagnetic energy to replace chemical energy for propulsion, while using magnetic levitation technology to eliminate frictional resistance and vibration during acceleration, thereby accelerating the test load to the target speed and realizing the function of dynamic environment test.

[0003] Currently, low magnetic reluctance track beam design schemes are also applied in some high-tech R&D industries, such as ultra-high-speed low-vacuum pipeline maglev transportation systems. Regarding related technologies for low magnetic reluctance track beams, representative patents mainly cover the following aspects: Patent "A Track Fine-Tuning Frame" (Patent No. CN215925460U) can finely adjust the height, lateral, and longitudinal positions of the Type III joint of medium- and low-speed maglev trains, effectively improving the installation accuracy of the Type III joint. This fine-tuning frame is only applicable to "normal-conducting medium- and low-speed maglev transportation" systems, and its on-site fine-tuning accuracy is not ideal; it is also unsuitable for "superconducting electric maglev." Patent "A Prefabricated Slab-Type Maglev Composite Track Structure" (Patent No. CN109914163B) discloses a method for "precision control of normal-conducting high-speed maglev track structures," which can conveniently and accurately adjust the track geometry during construction and improve the integrity and stability of the high-speed maglev composite track structure. However, this device is only applicable to normal-conducting high-speed maglev track systems and cannot be applied to "superconducting electric maglev" systems. The patent “A Medium-Low Speed ​​Maglev Train Track” (patent number CN202222472553.X) discloses a medium-low speed maglev train track in which the end of each sleeper is fixedly connected to the end of the adjacent sleeper, so that all the sleepers are connected into a whole sleeper. This structure enhances the ability of the track panel to resist longitudinal and lateral resistance. However, due to the high correlation between the substructures in this structure, it is easy to produce chain reactions, which in turn affect the whole from the local. Moreover, the construction is relatively complex and costly.

[0004] Traditional electromagnetic booster systems employ a U-shaped structure integrating levitation and propulsion, which suffers from numerous practical engineering problems, including high magnetic drag, low load-bearing capacity, and low thrust density. To address these key issues, this patent proposes a "three-dimensional prestressed low magnetic drag U-shaped track beam design scheme," which aims to solve the aforementioned engineering challenges. Utility Model Content

[0005] The purpose of this invention is to provide a three-dimensional prestressed low magnetic resistance track beam that addresses the above-mentioned shortcomings, thus solving the problems of high magnetic resistance, low load-bearing capacity, and low thrust density of electromagnetic skid track beams in the prior art.

[0006] The present utility model is achieved through the following solution:

[0007] A three-way prestressed low magnetic resistance track beam, comprising a first side beam, a second side beam, a first central beam, a second central beam, a main beam, a first auxiliary beam and a second auxiliary beam; the first central beam and the second central beam are respectively arranged on both sides of the main beam, the first central beam and the first side beam are connected through the first auxiliary beam, the second central beam and the second side beam are respectively connected through the second auxiliary beam, and the steel bars in the first side beam, the second side beam, the first central beam, the second central beam, the main beam, the first auxiliary beam and the second auxiliary beam all adopt low magnetic steel bars, and adjacent steel bars are bundled with insulating materials.

[0008] Based on the structure of the above-mentioned three-way prestressed low magnetic resistance track beam, both ends of the first auxiliary beam are respectively connected to the lower ends of the first side beam and the first central beam, both ends of the second auxiliary beam are respectively connected to the lower ends of the second side beam and the second central beam, and the main beam is respectively connected to the lower ends of the first central beam and the second central beam.

[0009] Based on the structure of the above-mentioned three-way prestressed low magnetic resistance track beam, the first central beam, the first side beam and the auxiliary connecting beam form a left track groove, the second central beam, the second side beam and the auxiliary connecting beam form a right track groove, and the first central beam, the second central beam and the main beam form a central track groove; the left track groove, the right track groove and the central track groove form a "Chuan" character structure.

[0010] Based on the structure of the above-mentioned three-way prestressed low magnetic resistance track beam, a first lateral protrusion is provided at the end of the first side beam far from the first auxiliary beam; a second lateral protrusion is provided at the end of the second side beam far from the second auxiliary beam; the first lateral protrusion and the second lateral protrusion are symmetrically arranged along the center of the main beam.

[0011] Based on the structure of the above-mentioned three-way prestressed low magnetic resistance track beam, a first central protrusion is provided at the end of the first central beam far from the main beam; a second central protrusion is provided at the end of the second central beam far from the main beam; the first central protrusion and the second central protrusion are symmetrically arranged along the center of the main beam.

[0012] Based on the structure of the above-mentioned three-way prestressed low magnetic resistance track beam, a plurality of central through grooves are arranged along the length direction of the main beam; a plurality of side through grooves are arranged along the length directions of the first auxiliary beam and the second auxiliary beam; the central through grooves and the side through grooves are arranged in a matching manner.

[0013] Based on the structure of the above-mentioned three-way prestressed low magnetic resistance track beam, the width of the central through groove is not less than the width of the side through groove, and the length of the central through groove is the same as the length of the side through groove.

[0014] Based on the structure of the above-mentioned three-way prestressed low-magnetic-resistance track beam, in the beam structure composed of the first side beam, the second side beam, the first central beam, the second central beam, the main beam, the first auxiliary beam and the second auxiliary beam, there are three pouring units from bottom to top; at the bottom positions of the first side beam, the second side beam, the first central beam and the second central beam, and the overall structure formed by the main beam, the first auxiliary beam and the second auxiliary beam is the first pouring unit; at the upper positions of the first side beam and the second side beam, and the middle positions of the first central beam and the second central beam form the second pouring unit; at the top positions of the first central beam and the second central beam form the third pouring unit.

[0015] Based on the structure of the above-mentioned three-way prestressed low-magnetic-resistance track beam, transverse steel bars, vertical steel bars and longitudinal steel bars are arranged inside the first side beam, the second side beam, the first central beam, the second central beam, the main beam, the first auxiliary beam and the second auxiliary beam.

[0016] Based on the structure of the above-mentioned three-way prestressed low-magnetic-resistance track beam, the transverse steel bars, vertical steel bars and longitudinal steel bars intersect with each other to form a frame structure, and the cross points between adjacent steel bars are fixedly connected by insulating buckles.

[0017] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0018] 1. This solution proposes a Sichuan-shaped low-magnetic Sichuan-shaped track beam structure based on the "levitation propulsion decoupling" design. The low-magnetic-resistance track beam design technology is based on the principles of electromagnetic induction and magnetic force balance, enabling the electromagnetic sled to levitate above the track and operate smoothly. The middle of the Sichuan-shaped track beam is the propulsion / braking groove, and the electromagnetic propulsion force / braking force is provided for the system through the interaction of the propulsion magnet with the stator coils / braking plates on both sides; the two sides are the levitation grooves, and the electromagnetic propulsion force is provided for the system through the interaction of the levitation magnet with the levitation plates on both sides. The steel bar mesh in the Sichuan-shaped track beam adopts low-magnetic materials and insulation binding technology, which can effectively reduce the magnetic field generated by the Sichuan-shaped track beam itself and reduce the interference to electronic equipment and communication systems in the surrounding environment. It can effectively reduce the operating energy consumption of the electromagnetic sled, reduce energy consumption, and lower the operating cost.

[0019] 2. The pouring of the Sichuan-shaped track beam in this solution adopts a layered pouring method, which not only facilitates the on-site pouring and forming of the Sichuan-shaped track beam but also ensures the dimensional accuracy of each part of the Sichuan-shaped track beam.

[0020] 3. This solution designs the track section into a "Sichuan" shape (propulsion in the middle and levitation on both sides), which not only realizes three-directional force bearing but also greatly improves the thrust density of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic side view structure diagram of the whole of the present utility model;

[0022] Figure 2 This is a top view of the overall structure of this utility model;

[0023] Figure 3 This is a three-dimensional structural diagram of the entire utility model;

[0024] Figure 4 This is a diagram showing the arrangement of the internal reinforcing bars in this utility model;

[0025] Figure descriptions: 1. First side beam; 2. Second side beam; 3. First central beam; 4. Second central beam; 5. Main beam; 6. First secondary beam; 7. Second secondary beam; 8. Left track groove; 9. Right track groove; 10. Central track groove; 11. First lateral protrusion; 21. Second lateral protrusion; 31. First central protrusion; 41. Second central protrusion; 51. Central through groove; 61. Side through groove; 100. First casting unit; 200. Second casting unit; 300. Third casting unit; 201. Horizontal reinforcement; 202. Vertical reinforcement; 203. Longitudinal reinforcement. Detailed Implementation

[0026] All features disclosed in this specification, or all steps in all disclosed methods or processes, may be combined in any way, except for mutually exclusive features and / or steps.

[0027] Any feature disclosed in this specification (including any appended claims and abstract) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0030] Example 1

[0031] like Figures 1-4 As shown, this utility model provides a technical solution:

[0032] A three-way prestressed low magnetic resistance track beam, which at least includes but is not limited to a first side beam 1, a second side beam 2, a first central beam 3, a second central beam 4, a main beam 5, a first auxiliary beam 6 and a second auxiliary beam 7; the first central beam 3 and the second central beam 4 are respectively arranged on both sides of the main beam 5, the first central beam 3 and the first side beam 1 are connected by the first auxiliary beam 6, and the second central beam 4 and the second side beam 2 are respectively connected by the second auxiliary beam 7. The steel bars in the first side beam 1, the second side beam 2, the first central beam 3, the second central beam 4, the main beam 5, the first auxiliary beam 6 and the second auxiliary beam 7 all adopt low magnetic steel bars, and the adjacent steel bars are bundled with insulating materials.

[0033] Based on the above structure, in this solution, the steel bar grid adopts low magnetic steel bars. The low magnetic steel bars have excellent characteristics such as low magnetic resistance, good plasticity and high toughness. Moreover, the steel bars in the steel bar grid are insulated and tied to ensure that each part of the steel bar grid in the magnetic field environment will not form a closed loop, thereby avoiding the generation of eddy currents and finally minimizing the magnetic resistance.

[0034] As an example, the two ends of the first auxiliary beam 6 are respectively connected to the lower ends of the first side beam 1 and the first central beam 3, the two ends of the second auxiliary beam 7 are respectively connected to the lower ends of the second side beam 2 and the second central beam 4, and the main beam 5 is respectively connected to the lower ends of the first central beam 3 and the second central beam 4.

[0035] The first central beam 3, the first side beam 1 and the auxiliary connecting beam form a left track groove 8, the second central beam 4, the second side beam 2 and the auxiliary connecting beam form a right track groove 9, and the first central beam 3, the second central beam 4 and the main beam 5 form a central track groove 10; the left track groove 8, the right track groove 9 and the central track groove 10 form a "Chuan" character structure.

[0036] Based on the above structure, in this solution, the middle of the Chuan-shaped track beam is a propulsion / braking groove, and the electromagnetic propulsion force / braking force is provided for the system through the interaction of the propulsion magnet with the stator coils / braking plates on both sides; both sides are suspension grooves, and the electromagnetic propulsion force is provided for the system through the interaction of the suspension magnet with the suspension plates on both sides; thus, not only the three-direction force is realized, but also the thrust density of the system is greatly improved.

[0037] As an example, a first lateral protrusion 11 is provided at the end of the first side beam 1 far from the first auxiliary beam 6; a second lateral protrusion 21 is provided at the end of the second side beam 2 far from the second auxiliary beam 7; the first lateral protrusion 11 and the second lateral protrusion 21 are symmetrically arranged along the center of the main beam 5;

[0038] A first central protrusion 31 is provided at the end of the first central beam 3 far from the main beam 5; a second central protrusion 41 is provided at the end of the second central beam 4 far from the main beam 5; the first central protrusion 31 and the second central protrusion 41 are symmetrically arranged along the center of the main beam 5.

[0039] Based on the above structure, by setting lateral protrusions on the first side beam 1 and the second side beam 2, the propulsion magnets on both sides of the electromagnetic skid can be limited. At the same time, by setting central protrusions on the first central beam 3 and the second central beam 4, the propulsion magnet in the center of the electromagnetic skid can be limited.

[0040] As an example, multiple central through slots 51 are provided along the length of the main beam 5; multiple side through slots 61 are provided along the length of the first secondary beam 6 and the second secondary beam 7; the central through slots 51 and the side through slots 61 are arranged in a matching manner.

[0041] The width of the central through groove 51 is not less than the width of the side through groove 61, and the length of the central through groove 51 is the same as the length of the side through groove 61.

[0042] Based on the above structure, by setting the central through slot 51 and the side through slot 61, it is convenient to provide circuit accommodation space for the coils assembled in the left track slot 8, the right track slot 9 and the central track slot 10.

[0043] As an example, in the beam structure composed of the first side beam 1, the second side beam 2, the first central beam 3, the second central beam 4, the main beam 5, the first secondary beam 6, and the second secondary beam 7, there are three casting units from bottom to top; the bottom positions of the first side beam 1, the second side beam 2, the first central beam 3, and the second central beam 4, as well as the overall structure formed by the main beam 5, the first secondary beam 6, and the second secondary beam 7, constitute the first casting unit 100;

[0044] The upper positions of the first side beam 1 and the second side beam 2, as well as the middle positions of the first central beam 3 and the second central beam 4, form the second casting unit 200;

[0045] The top positions of the first central beam 3 and the second central beam 4 form the third casting unit 300;

[0046] Based on the above structure, this plan adopts a layered casting method for the Sichuan-type track beam, which facilitates the on-site casting and shaping of the track beam while ensuring the dimensional accuracy of each part of the track beam. Specifically, after the overall steel reinforcement mesh of the track beam is tied, the mold for the first casting unit 100 is erected, and the concrete for the first casting unit 100 is poured. After the concrete for the first casting unit 100 has set, the mold for the second casting unit 200 is erected, and the concrete for the second casting unit 200 is poured. After the concrete for the second casting unit 200 has set, the mold for the third casting unit 300 is erected, and the concrete for the third casting unit 300 is poured. After the overall casting of the track beam is completed, the curing period should, in principle, be no less than 21 days; the actual time needs to be determined based on the local climate.

[0047] As an example, the interiors of the first side beam 1, the second side beam 2, the first central beam 3, the second central beam 4, the main beam 5, the first secondary beam 6, and the second secondary beam 7 are all provided with transverse steel bars 201, vertical steel bars 202, and longitudinal steel bars 203; the transverse steel bars 201, vertical steel bars 202, and longitudinal steel bars 203 intersect to form a frame structure, and the cross points between adjacent steel bars are fixedly connected by insulating buckles.

[0048] Based on the above structure, the steel bars in the steel mesh are insulated and tied together to ensure that no part of the steel mesh will form a closed loop in the magnetic field environment, thereby avoiding the generation of eddy currents and ultimately minimizing magnetic resistance.

[0049] In this scheme, the grade of concrete can be selected for the track beam according to the different load-bearing requirements of the beam. Commonly used grades are C45, C50 and C55. The hole features of the concrete track beam in the feature perspective are not processed after the concrete is poured, but reserved features in the prefabrication process of the steel mesh.

[0050] All the low-magnetic steel raw materials used in the steel mesh frame in this design are widely available and can be directly purchased from the market. They possess excellent characteristics such as low cost, ease of processing and transportation, and good toughness. The concrete used in the track beam is also a common product on the market, possessing excellent characteristics such as low cost, abundant supply, and easy availability. All other components are also common products on the market.

[0051] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A three-way prestressed low-magnetic-resistance track beam, characterized in that: The beam body structure formed by the first side beam, the second side beam, the first center beam, the second center beam, the main beam, the first auxiliary beam and the second auxiliary beam comprises three pouring units from bottom to top.

2. The three-way prestressed low-magnetic-resistance track beam according to claim 1, characterized in that: The two ends of the first auxiliary beam are connected with the lower end portions of the first side beam and the first center beam respectively, and the two ends of the second auxiliary beam are connected with the lower end portions of the second side beam and the second center beam respectively.

3. A three-way prestressed low-magnetic-resistance track beam according to claim 2, characterized in that: The first center beam, the first side beam and the auxiliary connecting beam form a left track groove, the second center beam, the second side beam and the auxiliary connecting beam form a right track groove, and the first center beam, the second center beam and the main beam form a center track groove.

4. A three-way prestressed low-magnetic-resistance track beam according to claim 3, characterized in that: The end portion of the first side beam away from the first auxiliary beam is provided with a first lateral protrusion, and the end portion of the second side beam away from the second auxiliary beam is provided with a second lateral protrusion.

5. A three-way prestressed low-magnetic reluctance track beam as claimed in claim 4, characterized in that: The end portion of the first center beam away from the main beam is provided with a first center protrusion, and the end portion of the second center beam away from the main beam is provided with a second center protrusion.

6. A three-way prestressed low-magnetic reluctance track beam according to claim 5, characterized in that: A plurality of center through grooves are arranged along the length direction of the main beam, and a plurality of side through grooves are arranged along the length direction of the first auxiliary beam and the second auxiliary beam.

7. A three-way prestressed low-magnetic reluctance track beam according to claim 6, characterized in that: The width of the center through groove is not less than the width of the side through groove, and the length of the center through groove is the same as the length of the side through groove.

8. A three-way prestressed low-magnetic reluctance track beam according to claim 7, characterized in that: The beam body structure formed by the first side beam, the second side beam, the first center beam, the second center beam, the main beam, the first auxiliary beam and the second auxiliary beam comprises three pouring units from bottom to top.

9. A three-way prestressed low-magnetic reluctance track beam according to claim 8, characterized in that: The inside of the first side beam, the second side beam, the first center beam, the second center beam, the main beam, the first auxiliary beam and the second auxiliary beam is provided with transverse steel bars, vertical steel bars and longitudinal steel bars.

10. A three-way prestressed low-magnetic reluctance track beam according to claim 9, characterized in that: The transverse steel bars, the vertical steel bars and the longitudinal steel bars are interlaced to form a frame structure, and the cross points between adjacent steel bars are fixedly connected by insulation buckles.

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