Magnetic levitation traffic track structure and construction method thereof

Abstract

The invention provides a maglev traffic track structure and a construction method thereof. The maglev traffic track structure comprises a bridge deck, a maglev track assembly and an induction plate assembly. The magnetic levitation rail assembly comprises a magnetic levitation rail, a hexagon nut, a gasket, a thin nut and a screw. The induction plate assembly comprises an iron core, an aluminum plate, shear nails and screws. The iron core is vertically welded and fixedly connected with the shear nails, the shear nails and the bridge deck are cast and anchored into a whole, the iron core is arranged on the upper end face of the bridge deck, and the aluminum plate is installed on the upper end face of the iron core through screws; the construction method comprises the steps that the prefabricated bridge deck slab is modularly poured in a factory, the magnetic levitation rail is installed, adjusted and locked in the factory, the levelness and straightness of the magnetic levitation rail are measured again, and the bridge deck slab is installed on a construction site. According to the invention, high-precision, high-efficiency and low-cost installation of the maglev traffic track is realized.

Description

Technical Field

[0001] The present invention belongs to the technical field of magnetic levitation or suspension train tracks, and in particular relates to a magnetic levitation transportation track structure and a construction method thereof. Background Art

[0002] As the core infrastructure of a maglev system, the performance of railroad tracks directly impacts the smooth operation, safety, and construction and operating costs of the entire system. Japan boasts advanced manufacturing processes and quality control, producing high-precision, highly stable railroad tracks. Its unique connection and fixing techniques ensure seamless connections and overall stability. South Korea prioritizes innovation and practicality, exploring solutions tailored to its national conditions. Research has been conducted on anti-corrosion and rust treatments for railroad tracks, enhancing their durability. German railroad tracks enjoy a high reputation in the maglev industry, offering reliable quality and excellent performance. Their design and manufacturing fully consider the operational characteristics of trains. By optimizing design and manufacturing processes, improving electromagnetic and mechanical properties, and conducting research on green manufacturing, they reduce energy consumption and pollution.

[0003] However, the high cost of raw materials, complex structures, and the need to achieve high-precision connections have led to high track costs, seriously restricting the large-scale promotion and application of medium- and low-speed maglev transportation systems. In response to this, the following improved technical solutions are proposed. Summary of the Invention

[0004] The present invention solves the technical problem of providing a maglev transportation track structure and a construction method thereof, so as to solve the technical problem of how to achieve high-precision, high-efficiency and low-cost installation of the maglev transportation track.

[0005] The technical solution adopted by the present invention is: a maglev transportation track structure, including a bridge deck, a maglev track assembly, and an induction plate assembly; the induction plate assembly is arranged on the top of the bridge deck, and the maglev track assembly is arranged on the bottom of the bridge deck. It should be understood that: the maglev track assembly provides suspension force and guiding force for the maglev train, and the induction plate assembly provides traction and braking force for the maglev train.

[0006] The improvement of the present invention lies in that: the magnetic levitation rail assembly comprises a magnetic levitation rail, a hexagonal nut, a washer, a thin nut, and a screw; and the induction plate assembly comprises an iron core, an aluminum plate, a shear nail, and a screw.

[0007] The iron core is vertically welded to the shear nails, and the shear nails are cast and anchored to the bridge deck as a whole. The iron core is arranged on the upper end surface of the bridge deck, and the upper end surface of the iron core is installed with an aluminum plate by screws.

[0008] The embedded sleeve is cast and fixedly connected to the lower part of the bridge deck as a whole, the embedded sleeve is rotatably connected to the upper end of the screw, and the lower end of the screw can be adjusted in height and level to install the magnetic levitation rail through a thin nut, a washer, and a hexagonal nut.

[0009] Preferably: a thin nut and a washer are installed at the lower end of the screw first and then; after the lower end of the screw is aligned with the bolt hole of the magnetic levitation rail and inserted, a washer and a hexagonal nut are installed at the lower end of the screw first and then; the thin nut and the hexagonal nut are rotated and adjusted to level and heighten the magnetic levitation rail; the thin nut and the hexagonal nut simultaneously apply torque to the magnetic levitation rail to lock the magnetic levitation rail.

[0010] Furthermore, the magnetic levitation track is an inverted U-shaped structure; the magnetic levitation track with the inverted U-shaped structure is an integrated structure, or the magnetic levitation track with the inverted U-shaped structure is formed by bending and stacking multiple steel plates and assembling them together.

[0011] Furthermore, the magnetic levitation track is provided with a groove, and the hexagonal nut is submerged into the groove.

[0012] Preferably, the embedded sleeve has a cone structure with a larger upper portion and a smaller lower portion. The inner wall of the embedded sleeve is provided with an internal thread, which is used to screw and fit a mounting screw, and the screw is used to adjust the installation height and levelness of the magnetic levitation rail.

[0013] Preferably, the bridge deck is an "I"-shaped structure, the bridge deck is modularly fixedly installed on the top of the concrete bridge, and the bridge deck and the concrete bridge form a "T"-shaped structure.

[0014] A construction method for a maglev transportation track structure, wherein the maglev transportation track structure is any of the novel maglev transportation track structures described above; the construction method comprises the following steps:

[0015] S1. Modular prefabricated bridge deck cast in factory: The prefabricated bridge deck has shear studs, iron core and embedded sleeves integrally cast therewith.

[0016] S2. Install, adjust, and lock the maglev track 2-1 in the factory: Install and adjust the maglev track 2-1 in the maglev track assembly 2 at the bottom of the bridge deck 1-2, and lock the position of the maglev track 2-1 after adjusting its height and levelness.

[0017] S3. Re-measure the horizontality and straightness of the magnetic levitation track 2-1 in the magnetic levitation track assembly 2 and the installation accuracy with the induction plate assembly 3 to ensure that it meets the vehicle-track dynamic matching requirements.

[0018] S4. Installing the bridge deck 1 - 2 at the construction site: installing the bridge deck 1 - 2 to the concrete bridge 1 .

[0019] Furthermore, the method further includes step S5 , installing the aluminum plate 3 - 2 : using screws 3 - 4 to install the aluminum plate 3 - 2 on the upper end surface of the iron core 3 - 1 , thereby completing the assembly of the induction plate assembly 3 .

[0020] Further: Step S1 includes the following steps:

[0021] S101. Before pouring, the shear studs 3-3 in the induction plate assembly 3 are pre-positioned vertically and welded to the iron core 3-1 in the factory; the embedded sleeve 1-1 is positioned and screwed to fit the positioning bolts pre-installed on the upper plate of the mold.

[0022] S102. Before pouring, turn the iron core 3-1 upside down, and make the shear nails 3-3 of the iron core 3-1 face vertically upwards. Place the iron core 3-1 in the lower mold and fix it. Place the steel cage in the mold and fix it.

[0023] S103, pouring concrete in the lower mold to the required thickness of the bridge deck 1-2, turning over and pressing the upper plate of the mold, so that the pre-installed embedded sleeve 1-1 on the upper plate of the mold is pressed vertically downward into the concrete, so that the embedded sleeve 1-1 is pre-embedded with the concrete as a whole.

[0024] S104. After the concrete solidifies, the mold is disassembled, the positioning bolts between the embedded sleeve 1-1 and the upper plate of the mold are removed, and the formed bridge deck 1-2 is taken out. The formed bridge deck 1-2 has the shear studs 3-3, the iron core 3-1 and the embedded sleeve 1-1 integrally cast therewith.

[0025] Further: Step S2 includes the following steps:

[0026] S201. Pre-install the screw rod 2-5 to support the bridge deck 1-2, and then screw the upper end of the screw rod 2-5 into each embedded sleeve 1-1 of the bridge deck 1-2.

[0027] S202, pre-installing the magnetic levitation track 2-1: screwing the thin nut 2-4 into the lower end of the screw 2-5, placing the washer 2-3, and then aligning the bolt hole of the magnetic levitation track 2-1 with the screw 2-5 and inserting it.

[0028] S203. Adjust the height of the maglev track 2-1: Place an adjustable support platform under the maglev track 2-1, use a measuring tool to measure the distance between the induction plate assembly 3 and the lower surface of the maglev track 2-1 to the required size, and then adaptively adjust the adjustable support platform to stabilize the height and position of the maglev track 2-1 and meet the size and position requirements.

[0029] S204, positioning the magnetic levitation track 2-1: rotating the thin nut 2-4 to press the magnetic levitation track 2-1 with the adjusted height onto the upper surface of the adjustable support platform.

[0030] S205. Lock the magnetic levitation track 2-1: Install the washer 2-3 at the lower end of the screw 2-5 of the magnetic levitation track 2-1, screw in the hexagonal nut 2-2 and tighten the hexagonal nut 2-2. Apply torque to the thin nut 2-4 and the hexagonal nut 2-2 at the same time to complete the assembly of the magnetic levitation track 2-1, and withdraw the adjustable support platform.

[0031] Furthermore, if the retest in step S3 finds that the straightness of a certain section of the magnetic levitation track 2-1 is out of tolerance, the following steps are performed to correct it:

[0032] S301. Loosen the hexagonal nut 2-2 and the thin nut 2-4 in the corresponding section.

[0033] S302, fine-tune the height of the adjustable support platform and readjust the height of the magnetic levitation track 2-1 supported by it.

[0034] S303. Re-tighten the thin nut 2-4 and the hexagonal nut 2-2 in sequence and retest until all indicators meet the standards.

[0035] The advantages of the present invention compared with the prior art are:

[0036] 1. The structure of the present invention mainly adopts modular cast prefabricated bridge deck, and the bridge deck integrates shear studs, iron core and embedded sleeves; during assembly, the operation is simple, and high-precision, high-efficiency and low-cost installation of maglev transportation track is achieved, which greatly improves construction efficiency, helps to reduce the cost of medium and low-speed maglev rail transportation system, and realizes large-scale promotion and application.

[0037] 2. The thin nut and the hexagonal nut in the structural solution of the present invention work together to clamp, tighten, and fix the magnetic levitation rail, greatly improving the anti-vibration and anti-loosening capabilities.

[0038] 3. The embedded sleeve in the structural solution of the present invention is a vertebral structure, which has an excellent anti-retraction effect and a stable structure.

[0039] 4. The overall structural solution of the present invention is light in weight and uses less materials, which further reduces and controls the construction cost of the magnetic levitation track.

[0040] 5. The construction method of the present invention is simple, and in particular, the height and levelness of the magnetic levitation track can be adjusted, which not only ensures installation accuracy but also can be expanded to various magnetic levitation track fields, with ideal versatility.

[0041] 6. The construction method of the present invention uses a factory-molded prefabricated bridge deck with high mold positioning accuracy, thereby ensuring the matching accuracy between the bridge deck and the magnetic levitation rail assembly and the induction plate assembly, while reducing the difficulty of subsequent assembly and simplifying the construction steps. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a three-dimensional diagram of the magnetic levitation transportation track structure after construction of the present invention is completed;

[0043] Figure 2 For the present invention Figure 1 The main view;

[0044] Figure 3 For the present invention Figure 2 A magnified detail of Part I;

[0045] FIG4( a ) is a perspective view of the sensor plate assembly of the present invention;

[0046] Figure 4(b) is a front view of Figure 4(a);

[0047] Figure 5 This is a front view of the magnetic levitation track assembly of the present invention;

[0048] Figure 6 A three-dimensional diagram of the magnetic levitation track in the magnetic levitation track assembly of the present invention;

[0049] Figure 7 A front perspective view of a preferred embodiment of the embedded sleeve of the present invention;

[0050] Figure 8 for Figure 7 A three-dimensional outline diagram of a preferred embodiment of the embedded sleeve;

[0051] FIG9( a ) is a perspective view of the cast bridge deck before the embedded sleeve is pressed into place in step S102 ;

[0052] FIG9( b ) is a perspective view of the cast bridge deck after the embedded sleeve is pressed in step S103 ;

[0053] FIG9( c ) is a perspective view of the installation and adjustment of the locking magnetic levitation rail in the factory in step S2 ;

[0054] Figure 10 Flow chart of the construction method of the present invention;

[0055] In the figure: 1-concrete bridge, 1-1 embedded sleeve, 1-2 bridge deck; 2-magnetic levitation track assembly, 2-1 magnetic levitation track, 2-2 hexagonal nut, 2-3 washer, 2-4 thin nut, 2-5 screw; 3-induction plate assembly, iron core 3-1, aluminum plate 3-2, shear nail 3-3, screw 3-4. DETAILED DESCRIPTION

[0056] The following is a combination of the embodiments of the present invention Figure 1-10 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0057] (like Figure 1 、 Figure 2 (As shown) A maglev transportation track structure includes a bridge deck 1-2, a maglev track assembly 2, and an induction plate assembly 3; the induction plate assembly 3 is arranged on the top of the bridge deck 1-2, and the maglev track assembly 2 is arranged on the bottom of the bridge deck 1-2. It should be understood that: the maglev track assembly 2 provides suspension force and guiding force for the maglev train, and the induction plate assembly 3 provides traction and braking force for the maglev train.

[0058] (like Figure 3 、 Figure 5 (As shown) The improvement of the present invention is that: the magnetic levitation track assembly 2 includes a magnetic levitation track 2-1, a hexagonal nut 2-2, a washer 2-3, a thin nut 2-4, and a screw 2-5; the induction plate assembly 3 includes an iron core 3-1, an aluminum plate 3-2, a shear nail 3-3, and a screw 3-4.

[0059] (like Figure 3 As shown), the iron core 3-1 is vertically welded to the shear nail 3-3, and the shear nail 3-3 is cast and anchored to the bridge deck 1-2 as a whole. The iron core 3-1 is arranged on the upper end surface of the bridge deck 1-2, and the aluminum plate 3-2 is installed on the upper end surface of the iron core 3-1 through screws 3-4.

[0060] It should be noted that: the aluminum plate 3-2 is generally made of aluminum alloy (density is only 1 / 3 of steel. Screws 3-4 are used to achieve a rigid connection between the aluminum plate 3-2 and the iron core 3-1 through pre-drilled holes (such as M6 threaded holes) to avoid thermal stress concentration caused by welding. The aluminum plate 3-2 and the iron core 3-1 are connected by multiple M6 screws 3-4.

[0061] (like Figure 3 As shown) the embedded sleeve 1-1 is cast and fixedly connected to the lower part of the bridge deck 1-2 as a whole, the embedded sleeve 1-1 is rotatably connected to the upper end of the screw 2-5, and the lower end of the screw 2-5 can be adjusted in height and level to install the magnetic levitation rail 2-1 through a thin nut 2-4, a washer 2-3, and a hexagonal nut 2-2.

[0062] Regarding the optimized structure for achieving height and leveling adjustment: Preferably, the lower ends of the screw rod 2-5 are first and then installed with the thin nut 2-4 and washer 2-3. After the lower end of the screw rod 2-5 is aligned with the bolt hole of the magnetic levitation track 2-1 and inserted, the washer 2-3 and hexagonal nut 2-2 are first and then installed on the lower ends of the screw rod 2-5. The thin nut 2-4 and hexagonal nut 2-2 are rotated and adjusted to level and height the magnetic levitation track 2-1. The thin nut 2-4 and hexagonal nut 2-2 simultaneously apply torque to the magnetic levitation track 2-1 to lock the magnetic levitation track 2-1. Note: For details on the specific adjustment method, please refer to the steps described in the construction method below.

[0063] It should be noted that the double-nut locking system on the upper and lower clamps allows for fine-tuning of the maglev track height (within a range of ±10mm) during operation without dismantling the track structure. If the track moves due to settlement or temperature changes, it can be quickly reset by loosening hexagonal nut 2-2 and adjusting thin nut 2-4.

[0064] The double-nut locking system of the upper and lower clamps forms a self-locking effect through the preload force rectangle, which can resist the dynamic load generated by the train operation.

[0065] The embedded sleeve 1-1 serves as a standardized interface, compatible with various maglev track assemblies (e.g., medium- and low-speed maglev and high-speed maglev), reducing track system upgrade costs. Furthermore, the sleeve's internal threads utilize standard specifications, adapting to mainstream adjusting screws in the market and reducing spare parts inventory.

[0066] The threaded connection of the embedded sleeve and the screw 2-5, the axial compression of the thin nut 2-4, and the lateral locking of the hexagonal nut 2-2 form a triple fixing system.

[0067] In addition, the bridge deck 1-2 integrates the iron core 3-1, shear studs 3-3, and embedded sleeves 1-1. The use of prefabricated bridge decks 1-2 reduces the complexity and time cost of on-site construction. Later on-site, only the installation and connection of the modular bridge decks 1-2 need to be carried out, which greatly simplifies the on-site construction process and difficulty and shortens the construction period. At the same time, the standardized production of prefabricated bridge decks 1-2 also facilitates transportation and storage, reducing logistics costs. Therefore, the integrated cast bridge deck 1-2 structure reduces connection points and potential failure points, reducing the cost and difficulty of subsequent maintenance. At the same time, the controllable quality of the prefabricated bridge decks 1-2 also reduces the need for repairs and replacements due to quality issues.

[0068] The design of the embedded sleeve 1-1 facilitates subsequent track installation and adjustment, enhancing construction adaptability and flexibility. The factory-prefabricated bridge deck 1-2 reduces on-site wet work and dust pollution, aligning with the concept of green construction. Furthermore, the reusability of the prefabricated bridge deck 1-2 reduces resource consumption and waste generation, contributing to improved environmental sustainability.

[0069] Furthermore: the magnetic levitation track 2-1 is an inverted U-shaped structure; the magnetic levitation track 2-1 of the inverted U-shaped structure is an integrated structure, or the magnetic levitation track 2-1 of the inverted U-shaped structure is assembled by bending and stacking multiple steel plates (such as Figure 6 Example).

[0070] about Figure 6 It should be noted that the one-piece magnetic levitation rail 2 - 1 is formed by rolling or forging in one step, thereby avoiding stress concentration caused by welds.

[0071] In addition to the above embodiments, the following embodiments are further included: the magnetic levitation track 2-1 of the inverted U-shaped structure is assembled by bending and stacking multiple steel plates. Figure 7 、 Figure 8 In the embodiment, specifically, the magnetic levitation track 2-1 in this embodiment is made of three steel plates, namely, steel plate A2-1-1, steel plate B2-1-2, and steel plate C2-1-3, which are bent, stacked, and assembled together.

[0072] It should be noted that steel plate A 2-1-1, steel plate B 2-1-2, and steel plate C 2-1-3 are made of ordinary carbon steel and bent separately, and the material cost is reduced by about 30% compared with the integrated type.

[0073] Furthermore, the magnetic levitation rail 2-1 is formed with a groove, and the hexagonal nut 2-2 is submerged into the groove.

[0074] It should be noted that the sunken installation of hexagonal nut 2-2 allows it to be fully embedded in the groove of magnetic levitation track 2-1, eliminating the interference of traditional exposed nuts in the space below the track and improving the overall compactness of the structure. In narrow areas under the bridge deck 1-2 or in scenarios requiring high-precision gap control, the sunken hexagonal nut 2-2 ensures that the gap between magnetic levitation track 2-1 and sensor plate assembly 3 is not affected by the protrusion of the hexagonal nut 2-2, meeting millimeter-level accuracy requirements.

[0075] (As shown in Figure 9, Figure 10 (As shown) Preferably: the embedded sleeve 1-1 has a cone structure with a larger upper portion and a smaller lower portion; the inner wall of the embedded sleeve 1-1 is provided with an internal thread, and the internal thread is used to screw and fit the mounting screw 2-5, and the screw 2-5 is used to adjust the installation height and levelness of the magnetic levitation rail 2-1.

[0076] It should be noted that the embedded sleeve 1-1 is designed as a conical structure with a larger top and smaller bottom. It is used to accommodate the screw 2-5, enabling high-precision height and level adjustment of the magnetic levitation track 2-1. This technology overcomes the bottlenecks of traditional solutions by enhancing mechanical strength, fine-tuning accuracy, and ease of construction. The conical design of the embedded sleeve 1-1, with its larger top and smaller bottom slope, creates a mechanical bond with the concrete, increasing its pullout resistance by 3-5 times compared to traditional straight sleeves.

[0077] The screw 2-5 can independently adjust the vertical height (±10mm) and horizontality (±0.05°) of the magnetic levitation track 2-1 by rotating forward and reverse, which is 10 times more accurate than traditional gasket adjustment.

[0078] In addition, the embedded sleeve 1-1 is formed at one time during concrete pouring, avoiding the process of secondary grouting of reserved holes in traditional solutions, and shortening the construction time of a single span.

[0079] Preferably: the bridge deck 1-2 is an "I"-shaped structure, the bridge deck 1-2 is modularly fixedly installed on the top of the concrete bridge 1, and the bridge deck 1-2 and the concrete bridge 1 form a "T"-shaped structure.

[0080] It should be noted that the maglev transportation track structure realizes the decoupling design and system integration of suspension force, guiding force, traction force and braking force through the three-layer collaborative architecture of bridge deck 1-2 (top load-bearing), induction plate assembly 3 (top traction and braking), and maglev rail assembly 2 (bottom suspension and guidance). The technical advantages are reflected in the three dimensions of structural optimization, performance improvement, and operation and maintenance economy, and the construction cost is lower than that of traditional solutions.

[0081] The present invention claims a construction method for a maglev transportation track structure, wherein the maglev transportation track structure is any of the novel maglev transportation track structures described above; the construction method comprises the following steps (such as Figure 10 shown): S1. Modular casting of prefabricated bridge deck 1-2 in factory: The prefabricated bridge deck 1-2 is provided with shear studs 3-3, iron core 3-1 and embedded sleeve 1-1 integrally cast therewith.

[0082] S1. Modular casting of prefabricated bridge deck 1-2 in factory: The prefabricated bridge deck 1-2 is provided with shear studs 3-3, iron core 3-1 and embedded sleeve 1-1 integrally cast therewith.

[0083] Further: Step S1 includes the following steps:

[0084] S101. Before pouring, the shear studs 3-3 in the induction plate assembly 3 are pre-positioned vertically and welded to the iron core 3-1 in the factory; the embedded sleeve 1-1 is positioned and screwed to fit the positioning bolts pre-installed on the upper plate of the mold.

[0085] S102. Before pouring, turn the iron core 3-1 upside down, and make the shear nails 3-3 of the iron core 3-1 face vertically upwards. Place the iron core 3-1 in the lower mold and fix it. Place the steel cage in the mold and fix it.

[0086] S103, pouring concrete in the lower mold to the required thickness of the bridge deck 1-2, turning over and pressing the upper plate of the mold, so that the pre-installed embedded sleeve 1-1 on the upper plate of the mold is pressed vertically downward into the concrete, so that the embedded sleeve 1-1 is pre-embedded with the concrete as a whole.

[0087] S104. After the concrete solidifies, the mold is disassembled, the positioning bolts between the embedded sleeve 1-1 and the upper plate of the mold are removed, and the formed bridge deck 1-2 is taken out. The formed bridge deck 1-2 has the shear studs 3-3, the iron core 3-1 and the embedded sleeve 1-1 integrally cast therewith.

[0088] It should be noted that the modular casting of the prefabricated bridge deck 1-2 in the factory achieves standardization and automation of the production process, significantly improving production efficiency. Furthermore, stricter quality control in the factory environment ensures the accuracy and consistency of the bridge deck 1-2, reduces on-site construction errors, and improves overall project quality. The integrated casting design of the bridge deck 1-2, shear studs 3-3, iron core 3-1, and embedded sleeve 1-1 enhances the integrity and stability of the structure. This design approach can more effectively transfer and distribute loads, improve the bridge deck's bearing capacity and fatigue resistance, and extend its service life. Therefore, the factory-prefabricated bridge deck 1-2 in step S1 of the present invention improves efficiency and quality. The integrated casting design of the bridge deck 1-2, shear studs 3-3, iron core 3-1, and embedded sleeve 1-1 enhances structural stability, improves construction convenience, reduces maintenance costs, increases adaptability and flexibility, and is environmentally friendly and sustainable.

[0089] S2. Install, adjust, and lock the maglev track 2-1 in the factory: Install and adjust the maglev track 2-1 in the maglev track assembly 2 at the bottom of the bridge deck 1-2, and lock the position of the maglev track 2-1 after adjusting its height and levelness.

[0090] Further: Step S2 includes the following steps:

[0091] S201. Pre-install the screw rod 2-5 to support the bridge deck 1-2, and then screw the upper end of the screw rod 2-5 into each embedded sleeve 1-1 of the bridge deck 1-2.

[0092] S202, pre-installing the magnetic levitation track 2-1: screwing the thin nut 2-4 into the lower end of the screw 2-5, placing the washer 2-3, and then aligning the bolt hole of the magnetic levitation track 2-1 with the screw 2-5 and inserting it.

[0093] S203. Adjust the height of the maglev track 2-1: Place an adjustable support platform under the maglev track 2-1, use a measuring tool to measure the distance between the induction plate assembly 3 and the lower surface of the maglev track 2-1 to the required size, and then adaptively adjust the adjustable support platform to stabilize the height and position of the maglev track 2-1 and meet the size and position requirements.

[0094] S204, positioning the magnetic levitation track 2-1: rotating the thin nut 2-4 to press the magnetic levitation track 2-1 with the adjusted height onto the upper surface of the adjustable support platform.

[0095] S205. Lock the magnetic levitation track 2-1: Install the washer 2-3 at the lower end of the screw 2-5 of the magnetic levitation track 2-1, screw in the hexagonal nut 2-2 and tighten the hexagonal nut 2-2. Apply torque to the thin nut 2-4 and the hexagonal nut 2-2 at the same time to complete the assembly of the magnetic levitation track 2-1, and withdraw the adjustable support platform.

[0096] It should be noted that: Step S2 of the present invention realizes millimeter-level height adjustment (error ≤±0.5mm) and horizontality control (tilt angle ≤0.05°) of the magnetic levitation rail through a four-level adjustment system of embedded sleeve-screw-thin nut-hexagonal nut. The adjustable support platform is used as an intermediate reference, and the distance between the induction plate assembly 3 and the lower surface of the magnetic levitation rail 2-1 is measured with a measuring tool to form a dual-reference calibration system to ensure that the installation accuracy of the magnetic levitation rail 2-1 meets the design requirements and provide basic protection for the suspension stability of the train. The factory pre-installation of the embedded sleeve 1-1 shortens the on-site installation time to 1 / 3 of the traditional method, significantly improving construction efficiency. At the same time, the adjustable support platform has a rapid positioning function. Therefore, step S2 of the present invention can achieve high-precision assembly and stability control, the multi-stage adjustment mechanism ensures accuracy, the double-nut locking structure improves vibration resistance, and the construction is efficient and convenient for maintenance; modular prefabrication shortens the construction period, the reversible adjustment structure is convenient for maintenance, the structure has excellent adaptability, and is more economical. The embedded sleeve is a standardized structure that is compatible with magnetic levitation rail assemblies of different specifications, reducing production costs; the gasket's dispersed pressure and buffering effect reduce local stress concentration and extend equipment life; it is safer, more reliable and easier to maintain.

[0097] S3. Re-measure the horizontality and straightness of the magnetic levitation track 2-1 in the magnetic levitation track assembly 2 and the installation accuracy with the induction plate assembly 3 to ensure that it meets the vehicle-track dynamic matching requirements.

[0098] It should be noted that horizontal adjustment ensures the stability of the train's suspension posture, straightness adjustment prevents operational vibration and lateral forces, and installation precision control ensures the consistency of the electromagnetic suspension force. Dynamic matching requires retesting to simulate the vibration, thermal deformation, and other operating conditions of the train during high-speed operation to ensure that accuracy still meets the design threshold under dynamic conditions.

[0099] Furthermore, if the retest in step S3 finds that the straightness of a certain section of the magnetic levitation track 2-1 is out of tolerance, the following steps are performed to correct it:

[0100] S301. Loosen the hexagonal nut 2-2 and the thin nut 2-4 in the corresponding section.

[0101] S302, fine-tune the height of the adjustable support platform and readjust the height of the magnetic levitation track 2-1 supported by it.

[0102] S303. Re-tighten the thin nut 2-4 and the hexagonal nut 2-2 in sequence and retest until all indicators meet the standards.

[0103] It should be noted that the retesting of steps S301 to S303 and the bridge deck installation in S4 form a closed-loop quality control chain, ensuring that the geometric accuracy (such as straightness and gap) of the maglev track and the bridge deck meets the dynamic matching requirements, providing a basis for the train suspension stability.

[0104] S4. Installing the bridge deck 1 - 2 at the construction site: installing the bridge deck 1 - 2 to the concrete bridge 1 .

[0105] Furthermore, the method further includes step S5 , installing the aluminum plate 3 - 2 : using screws 3 - 4 to install the aluminum plate 3 - 2 on the upper end surface of the iron core 3 - 1 , thereby completing the assembly of the induction plate assembly 3 .

[0106] It should be noted that the aluminum plate 3-2 is installed in the last step to avoid scratches on the aluminum plate during construction. Screws 3-4 achieve a rigid connection between the aluminum plate and the iron core through pre-drilled holes (such as M6 threaded holes) to avoid thermal stress concentration caused by welding. Generally, the aluminum plate 3-2 and the iron core 3-1 are connected through multiple M6 screws 3-4. The modular assembly solution of aluminum plate + screws has achieved a performance breakthrough for the magnetic levitation system. The lightweight design and high conductivity work together to improve suspension efficiency and energy efficiency. The standardized interface and the rapid replacement and disassembly mechanism of the aluminum plate reduce the cost of the entire life cycle.

[0107] From the above description, it can be found that the structure of the present invention mainly adopts modular cast prefabricated bridge panels, and the bridge panels are integrated with shear nails, iron cores and embedded sleeves; during assembly, the operation is simple, and high-precision, high-efficiency and low-cost installation of magnetic levitation transportation tracks is achieved, which greatly improves construction efficiency, is conducive to reducing the cost of medium and low-speed magnetic levitation rail transportation systems, and realizes large-scale promotion and application.

[0108] The thin nuts and hexagonal nuts in the structural design work together to clamp and tighten the maglev track, significantly improving its resistance to vibration and loosening. The embedded sleeve in the structural design features a conical structure, providing excellent retaining effect and a stable structure. The overall structural design is lightweight and uses minimal materials, further reducing and controlling the construction costs of the maglev track.

[0109] The present invention's simple construction method allows for adjustable height and levelness of the maglev track, ensuring not only precise installation but also broad applicability across various maglev track applications, demonstrating excellent versatility. The factory-cast prefabricated bridge deck, using molds, achieves high mold positioning accuracy, ensuring precise matching between the deck, the maglev track assembly, and the induction plate assembly. This reduces the complexity of subsequent assembly and simplifies the construction process.

[0110] It should be understood that although this specification is described according to one embodiment, this embodiment does not only include one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in this embodiment can also be appropriately arranged and combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A magnetic levitation transportation track structure, comprising a bridge deck (1-2), a magnetic levitation track assembly (2), and an induction plate assembly (3); the induction plate assembly (3) is arranged on the top of the bridge deck (1-2), and the magnetic levitation track assembly (2) is arranged on the bottom of the bridge deck (1-2), characterized in that: The magnetic levitation track assembly (2) comprises a magnetic levitation track (2-1), a hexagonal nut (2-2), a washer (2-3), a thin nut (2-4), and a screw (2-5); the induction plate assembly (3) comprises an iron core (3-1), an aluminum plate (3-2), a shear pin (3-3), and a screw (3-4); The iron core (3-1) is vertically welded to a shear nail (3-3), the shear nail (3-3) is cast and anchored to the bridge deck (1-2) as a whole, the iron core (3-1) is arranged on the upper end surface of the bridge deck (1-2), and the aluminum plate (3-2) is installed on the upper end surface of the iron core (3-1) via screws (3-4); The embedded sleeve (1-1) is integrally connected to the lower part of the bridge deck (1-2) by casting, and the embedded sleeve (1-1) is rotatably connected to the upper end of the screw rod (2-5). The lower end of the screw rod (2-5) is installed on the magnetic levitation rail (2-1) in a height-adjustable and levelable manner via a thin nut (2-4), a washer (2-3), and a hexagonal nut (2-2).

2. The maglev transportation track structure according to claim 1, characterized in that: The lower end of the screw rod (2-5) is firstly installed with a thin nut (2-4) and a washer (2-3); after the lower end of the screw rod (2-5) is aligned with the bolt hole of the magnetic levitation track (2-1) and inserted, the washer (2-3) and the hexagonal nut (2-2) are firstly installed with the lower end of the screw rod (2-5); the thin nut (2-4) and the hexagonal nut (2-2) are rotated and adjusted to level and heighten the magnetic levitation track (2-1); the thin nut (2-4) and the hexagonal nut (2-2) simultaneously apply torque to the magnetic levitation track (2-1) to lock the magnetic levitation track (2-1).

3. The maglev transportation track structure according to claim 1, characterized in that: The magnetic levitation track (2-1) is an inverted U-shaped structure; the magnetic levitation track (2-1) with the inverted U-shaped structure is an integrated structure, or the magnetic levitation track (2-1) with the inverted U-shaped structure is formed by bending, stacking and assembling multiple steel plates.

4. The maglev transportation track structure according to any one of claims 1 to 3, characterized in that: The magnetic levitation rail (2-1) is provided with a groove, and the hexagonal nut (2-2) is submerged and inserted into the groove.

5. The maglev transportation track structure according to claim 1, characterized in that: The embedded sleeve (1-1) has an outer shape of a cone structure with a larger upper portion and a smaller lower portion. An internal thread is formed on the inner wall of the embedded sleeve (1-1). The internal thread is used for screwing and fitting a mounting screw rod (2-5). The screw rod (2-5) is used for adjusting the mounting height and horizontality of the magnetic levitation rail (2-1).

6. The novel magnetic levitation transportation track structure according to claim 1 is characterized in that: The bridge deck (1-2) is an "I"-shaped structure, and the bridge deck (1-2) is modularly fixedly installed on the top of the concrete bridge (1), and the bridge deck (1-2) and the concrete bridge (1) form a "T"-shaped structure.

7. A construction method for a maglev transportation track structure, characterized by: The magnetic levitation transportation track structure is the novel magnetic levitation transportation track structure according to any one of claims 1 to 6; the construction method comprises the following steps: S1. Modular casting of prefabricated bridge deck (1-2) in a factory: the prefabricated bridge deck (1-2) is provided with shear studs (3-3), an iron core (3-1) and a pre-embedded sleeve (1-1) integrally cast therewith; S2. Install and adjust the locking magnetic levitation track (2-1) in the factory: Install and adjust the magnetic levitation track (2-1) in the magnetic levitation track assembly (2) at the bottom of the bridge deck (1-2), and adjust the magnetic levitation track (2-1). After checking the height and level, the magnetic levitation track (2-1) is locked in position; S3, re-measure the horizontality and straightness of the magnetic levitation rail (2-1) in the magnetic levitation rail assembly (2) and the installation accuracy with the induction plate assembly (3) to ensure that it meets the vehicle-rail dynamic matching requirements; S4. Installing the bridge deck (1-2) at the construction site: installing the bridge deck (1-2) to the concrete bridge (1).

8. The construction method according to claim 7, characterized in that: The method further includes step S5, installing the aluminum plate (3-2): using screws (3-4) to install the aluminum plate (3-2) on the upper end surface of the iron core (3-1), thereby completing the assembly of the induction plate assembly (3).

9. The construction method according to claim 7 or 8, characterized in that: Step S1 includes the following steps: S101. Before pouring, the shear pins (3-3) in the induction plate assembly (3) are pre-positioned and welded to the iron core (3-1) in the factory to form a whole; the embedded sleeve (1-1) is positioned and screwed to fit the positioning bolts pre-installed on the upper plate of the mold; S102, before pouring, invert the iron core (3-1), and make the shear nails (3-3) of the iron core (3-1) face vertically upward, put the iron core (3-1) into the lower mold and fix it, put the steel cage into it and fix it; S103, pouring concrete in the lower mold to the required thickness of the bridge deck (1-2), turning over and pressing the upper plate of the mold, so that the embedded sleeve (1-1) pre-installed on the upper plate of the mold is pressed vertically downward into the concrete, so that the embedded sleeve (1-1) and the concrete are embedded as a whole; S104. After the concrete solidifies, the mold is disassembled, the positioning bolts between the embedded sleeve (1-1) and the upper plate of the mold are removed, and the formed bridge deck (1-2) is taken out. The formed bridge deck (1-2) is provided with shear studs (3-3) integrally cast with it, the iron core (3-1) and the embedded sleeve (1-1).

10. The construction method according to claim 9, characterized in that: Step S2 includes the following steps: S201, pre-installing the screw rod (2-5), supporting the bridge deck (1-2), and screwing the upper end of the screw rod (2-5) into each embedded sleeve (1-1) of the bridge deck (1-2); S202, pre-installing the magnetic levitation track (2-1): screwing a thin nut (2-4) into the lower end of the screw (2-5), placing a washer (2-3), and then aligning the bolt hole of the magnetic levitation track (2-1) with the screw (2-5) and inserting it; S203, adjusting the height of the magnetic levitation track (2-1): placing an adjustable support platform below the magnetic levitation track (2-1), measuring the distance between the induction plate assembly (3) and the lower surface of the magnetic levitation track (2-1) with a measuring tool to the required size, and then adaptively adjusting the adjustable support platform to stabilize the height and position of the magnetic levitation track (2-1) and meet the size and position requirements; S204, positioning the magnetic levitation rail (2-1): rotating the thin nut (2-4) to press the magnetic levitation rail (2-1) whose height position has been adjusted onto the upper surface of the adjustable support platform; S205, locking the magnetic levitation track (2-1): after installing the washer (2-3) at the lower end of the screw (2-5) of the magnetic levitation track (2-1), screw in the hexagonal nut (2-2) and tighten the hexagonal nut (2-2), apply torque to the thin nut (2-4) and the hexagonal nut (2-2) at the same time to complete the assembly of the magnetic levitation track (2-1), and withdraw the adjustable support platform.

11. The construction method according to claim 9, characterized in that: If the retest finds that the straightness of a certain section of the magnetic levitation track (2-1) is out of tolerance, the following steps are performed to correct it: S301. Loosen the hexagonal nut (2-2) and thin nut (2-4) of the corresponding section; S302, fine-tuning the height of the adjustable support platform, and re-adjusting the height of the magnetic levitation track (2-1) supported by the platform; S303. Re-tighten the thin nut (2-4) and the hexagonal nut (2-2) in sequence and retest until all indicators meet the standards.

Images