Ultrahigh-speed vacuum pipeline magnetic suspension dynamic model system

Abstract

The embodiment of the invention provides an ultra-high-speed vacuum pipeline magnetic suspension dynamic model system which comprises a model car and external equipment, the model car comprises a model car body shell, a model car body bottom plate and a model car body framework, the external equipment comprises a rotor and a Dewar assembly, the rotor is arranged below the model car body bottom plate and extends in the longitudinal direction, and the Dewar assembly is arranged below the model car body bottom plate. The mover is detachably and fixedly connected with the model vehicle body framework through the mover connecting device, and the Dewar assembly is located below the model vehicle body bottom plate and detachably and fixedly connected with the model vehicle body bottom plate and the model vehicle body framework; as the Dewar assembly is arranged below the bottom plate of the model car body, and the Dewar assembly and the bottom plate of the model car body are of a split structure, when different scale models need to be replaced, only the model car structure needs to be replaced, the mover, the Dewar assembly and other structures do not need to be replaced, and the same test bed can meet the test requirements of the different scale models.

Description

Technical Field

[0001] This application relates to the technical field of dynamic model systems, and specifically, to a hyper - speed maglev dynamic model system for a vacuum pipeline. Background Art

[0002] The construction goal of the "Polymorphic Coupling Rail Transit Dynamic Model Test Platform" is positioned as an innovative scientific research test platform that is the first in China and leading in the world. It is a hyper - speed vacuum pipeline traffic test platform with the most complete test functions, the highest test speed, the most complete suspension modes, adjustable operating environments, and variable model scales, and is an advanced example of "future transportation". After the test platform is completed, the environmental pressure can be adjusted between 0.005 and 1.0 atmospheres, and at the same time, the highest test speed can reach 1500 km / h.

[0003] The train model system, as one of the most important components of this test platform, plays a crucial role. There is a 1:8 scale dynamic model system, which is a conventional high - speed multiple unit. The car body, bogie cabin, and bogie are an integral whole, all at a 1:8 scale. When it is necessary to carry different scaled - down models on the same test bench, the entire dynamic model system and the test bench need to be replaced, resulting in high test costs and unable to meet the needs of different scaled - down models on the same test bench. Summary of the Invention

[0004] An embodiment of this application provides a hyper - speed maglev dynamic model system for a vacuum pipeline to solve the problem that the existing test bench cannot meet the needs of different scaled - down models.

[0005] To achieve the above object, this application provides the following technical solutions:

[0006] A hyper - speed maglev dynamic model system for a vacuum pipeline includes a model vehicle and external equipment;

[0007] The model vehicle includes a model vehicle body shell, a model vehicle body bottom plate, and a model vehicle body skeleton; the model vehicle body bottom plate is provided at the bottom end of the model vehicle body shell, and the model vehicle body shell and the model vehicle body bottom plate are fixedly connected to form a receiving space for receiving internal equipment; the model vehicle body skeleton is respectively connected to the model vehicle body shell and the model vehicle body bottom plate for carrying the loads of the model vehicle body shell and the model vehicle body bottom plate;

[0008] The external equipment includes a mover and a Dewar assembly. The mover is provided below the model vehicle body bottom plate and extends longitudinally. The top of the mover is detachably and fixedly connected to the model vehicle body skeleton through a mover connection device passing through the model vehicle body bottom plate; the Dewar assembly is located below the model vehicle body bottom plate and is respectively detachably and fixedly connected to the model vehicle body bottom plate and the model vehicle body skeleton.

[0009] Optionally, the Dewar assembly includes:

[0010] A Dewar mounting plate, located below the bottom plate of the model vehicle body, and detachably and fixedly connected to the bottom plate of the model vehicle body;

[0011] A plurality of Dewars, all located on the Dewar mounting plate, and superconductors are installed in the Dewars for generating levitation force when interacting with the permanent magnet track during the operation of the model vehicle.

[0012] Optionally, any one of the Dewars is fixed to the Dewar mounting plate by a threaded fastener;

[0013] A Dewar mounting groove is provided on the vehicle body frame, and a Dewar mounting interface corresponding to the Dewar is provided on the vehicle body shell.

[0014] Optionally, Dewars are provided at the four corner positions of the Dewar mounting plate.

[0015] Optionally, at least one mounting cavity is provided on the model vehicle body frame for fixing the mover connection device.

[0016] Optionally, the mover connection device includes:

[0017] A power connection member and a first connection member, a second connection member, and a third connection member connected in a Z shape in sequence;

[0018] One end of the power connection member is elastically hinged to the middle of the second connection member, and the other end is fixedly connected to the top of the mover;

[0019] Both ends of the second connection member are elastically hinged to the first connection member and the first end of the third connection member respectively, and the second ends of the first connection member and the third connection member both extend longitudinally and are elastically hinged to the opposite vertical side surfaces of the mounting cavity respectively.

[0020] Optionally, the model vehicle body shell includes:

[0021] Two streamline body shells and a straight section body shell, the two streamline body shells are respectively located at the longitudinal two ends of the straight section body shell, and the streamline body shells are detachably and fixedly connected to the straight section body shell.

[0022] Optionally, a first plug-in member and a second plug-in member that cooperate with each other are respectively arranged vertically on the model vehicle body shell and the model vehicle body frame, and the first plug-in member and the second plug-in member are plugged into each other to realize the connection between the model vehicle body shell and the model vehicle body frame.

[0023] Optionally, it further includes:

[0024] A sensor assembly, located on the model vehicle, is used to detect the body state parameters of the model vehicle during its operation;

[0025] A control device, connected to the sensor assembly, is used to upload the body state parameters of the model vehicle to a host computer.

[0026] Optionally, the sensor assembly includes one or more of a vibration sensor, an in-vehicle noise sensor, a suspension height sensor, and a lateral displacement sensor.

[0027] A high-speed vacuum pipeline maglev dynamic model system provided by an embodiment of the present application includes a model vehicle and external equipment; the model vehicle includes a model vehicle body shell, a model vehicle body bottom plate, and a model vehicle body skeleton; the model vehicle body bottom plate is arranged at the bottom end of the model vehicle body shell, and the model vehicle body shell and the model vehicle body bottom plate are fixedly connected to form an accommodation space for accommodating internal equipment; the model vehicle body skeleton is respectively connected to the model vehicle body shell and the model vehicle body bottom plate and is used to bear the loads of the model vehicle body shell and the model vehicle body bottom plate; the external equipment includes a mover and a Dewar assembly, the mover is arranged below the model vehicle body bottom plate and extends longitudinally, and the top of the mover is detachably and fixedly connected to the model vehicle body skeleton through a mover connection device penetrating the model vehicle body bottom plate; the Dewar assembly is located below the model vehicle body bottom plate and is respectively detachably and fixedly connected to the model vehicle body bottom plate and the model vehicle body skeleton.

[0028] When using the high-speed vacuum pipeline maglev dynamic model system provided by the embodiment of the present application, compared with the prior art, it has the following technical effects:

[0029] In the present application, the model system includes a model vehicle and external equipment, the model vehicle includes a model vehicle body shell, a model vehicle body bottom plate, and a model vehicle body skeleton, the external equipment includes a mover and a Dewar assembly, the mover is arranged below the model vehicle body bottom plate and extends longitudinally, the mover is detachably and fixedly connected to the model vehicle body skeleton through a mover connection device, and the Dewar assembly is located below the model vehicle body bottom plate and is respectively detachably and fixedly connected to the model vehicle body bottom plate and the model vehicle body skeleton; since the Dewar assembly is arranged below the model vehicle body bottom plate and the two are of a split structure, when it is necessary to replace different scaled models, only the model vehicle structure needs to be replaced, and there is no need to replace structures such as the mover and the Dewar assembly, so that the same test bench can meet the test requirements of different scaled models; at the same time, a new maglev dynamic model system is provided, breaking through the limitations of traditional dynamic model systems and improving the test speed; and the modular design method improves the test efficiency and provides test data for designers to explore the performance of high-speed maglev trains. Description of the Drawings

[0030] The accompanying drawings described herein are used to provide a further understanding of the present application and form a part of the present application. The schematic embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation of the present application. In the drawings:

[0031] Figure 1 It is a schematic structural diagram of a high-speed vacuum pipeline maglev dynamic model system provided by an embodiment of the present application;

[0032] Figure 2 It is a schematic structural diagram of a model vehicle body bottom plate provided by an embodiment of the present application;

[0033] Figure 3 It is a schematic cross-sectional structural diagram of a model vehicle provided by an embodiment of the present application;

[0034] Figure 4 It is a schematic structural diagram of a high-speed vacuum pipeline maglev dynamic model system provided by another embodiment of the present application;

[0035] Figure 5 It is a schematic structural diagram of a model vehicle body bottom plate provided by another embodiment of the present application;

[0036] Figure 6 It is a schematic cross-sectional structural diagram of a high-speed vacuum pipeline maglev dynamic model system provided by an embodiment of the present application;

[0037] Figure 7 It is a schematic structural diagram of a mover connection device provided by an embodiment of the present application.

[0038] The reference numerals in the drawings are as follows:

[0039] Model vehicle body shell 1, model vehicle body bottom plate 2, model vehicle body frame 3, mover 4, Dewar assembly 5, mover connection device 6, vibration sensor 7, in-vehicle noise sensor 8, suspension height sensor 9, lateral displacement sensor 10;

[0040] First plug-in part 11, second plug-in part 12;

[0041] Installation cavity 31;

[0042] Power connection part 61, first connection part 62, second connection part 63, third connection part 64. Detailed implementation manners

[0043] Embodiments of the present invention disclose a high-speed vacuum pipeline maglev dynamic model system to solve the problem that the existing test bench cannot meet the requirements of different scaled models.

[0044] To make the technical solutions and advantages in the embodiments of this application clearer and more understandable, the following further elaborates on the exemplary embodiments of this application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, rather than an exhaustive list of all embodiments. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other.

[0045] Please refer to Figure 1-7 , Figure 1 which is a schematic structural diagram of a hyper - speed vacuum pipeline maglev dynamic model system provided by an embodiment of this application; Figure 2 which is a schematic structural diagram of a model vehicle body bottom plate provided by an embodiment of this application; Figure 3 which is a sectional structural diagram of the model vehicle provided by an embodiment of this application; Figure 4 which is a schematic structural diagram of a hyper - speed vacuum pipeline maglev dynamic model system provided by another embodiment of this application; Figure 5 which is a schematic structural diagram of a model vehicle body bottom plate provided by another embodiment of this application; Figure 6 which is a sectional structural schematic diagram of a hyper - speed vacuum pipeline maglev dynamic model system provided by an embodiment of this application; Figure 7 which is a schematic structural diagram of a mover connection device provided by an embodiment of this application.

[0046] In a specific implementation manner, the hyper - speed vacuum pipeline maglev dynamic model system provided by this application includes a model vehicle and external equipment;

[0047] The model vehicle includes a model vehicle body shell 1, a model vehicle body bottom plate 2, and a model vehicle body frame 3; the model vehicle body bottom plate 2 is arranged at the bottom end of the model vehicle body shell 1, and the model vehicle body shell 1 and the model vehicle body bottom plate 2 are fixedly connected to form a receiving space for receiving internal equipment; the vehicle body frame is respectively connected to the vehicle body shell and the vehicle body bottom plate, and is used to bear the loads of the vehicle body shell and the vehicle body bottom plate;

[0048] The external equipment includes a mover 4 and a Dewar assembly 5. The mover 4 is arranged below the model vehicle body bottom plate 2 and extends longitudinally. The top of the mover 4 is detachably and fixedly connected to the model vehicle body frame 3 through a mover connection device 6 that penetrates the model vehicle body bottom plate 2; the Dewar assembly 5 is located below the model vehicle body bottom plate 2 and is respectively detachably and fixedly connected to the model vehicle body bottom plate 2 and the model vehicle body frame 3.

[0049] The model vehicle system consists of a model vehicle and external equipment; among them, the model vehicle is composed of a model vehicle body shell 1, a model vehicle body bottom plate 2, and a model vehicle body frame 3. The model vehicle body bottom plate 2 is located at the bottom end of the model vehicle body shell 1 and is preferably detachably fixedly connected to replace the model vehicle body shell 1 according to different vehicle body models to adapt to different train test requirements and improve the adaptability of the test system. A receiving space is formed between the model vehicle body shell 1 and the model vehicle body bottom plate 2 for placing internal equipment. The internal equipment includes monitoring equipment and test equipment, as well as structures such as a traction device, an equipment compartment, and a limit protection device. The model vehicle body frame 3 is respectively connected to the model vehicle body shell 1 and the model vehicle body bottom plate 2 to bear the loads of the model vehicle body shell 1 and the model vehicle body bottom plate 2.

[0050] The mover 4 and the cryostat assembly 5 are located outside the model vehicle. Specifically, the mover 4 is arranged below the model vehicle body bottom plate 2 and extends longitudinally. The mover 4 includes two mover 4 monomers connected by hinges. Each mover 4 monomer includes 10 permanent magnets. After the mover 4 monomer is subjected to a magnetic field force, it is transmitted to the mover connection device 6. The model vehicle is tightly connected to the mover 4 through the mover connection device 6 to achieve the traction and braking of the vehicle body. Further, the cryostat assembly 5 is arranged below the model vehicle body bottom plate 2 and is detachably fixedly connected to the model vehicle body bottom plate 2 and the model vehicle body frame 3 respectively. Thus, when replacing the model vehicle, there is no need to replace the external equipment as a whole, and only the model vehicle needs to be replaced. There is no need to replace structures such as the mover 4 and the cryostat assembly 5, so that the same test bench can meet the test requirements of different scaled models. For example, the external dimensions of the 1:3 model vehicle in length, width, and height are 12000 mm, 1000 mm, and 855 mm respectively, and the external dimensions of the 1:8 model vehicle in length, width, and height are 5000 mm, 400 mm, and 320 mm respectively. At the same time, a new maglev dynamic model system is provided to break through the limitations of the traditional dynamic model system and improve the test speed; and the modular design method improves the test efficiency and provides test data for designers to explore the performance of ultra-high-speed maglev trains.

[0051] In one embodiment, the cryostat assembly 5 includes:

[0052] A cryostat mounting plate, located below the model vehicle body bottom plate 2 and detachably fixedly connected to the model vehicle body bottom plate 2;

[0053] A number of cryostats, all located on the cryostat mounting plate. Superconductors are installed in the cryostats to generate levitation force when the model vehicle is running and interacting with the permanent magnet track.

[0054] The Dewar mounting plate is preferably located below the bottom plate 2 of the model vehicle body. The Dewar mounting plate and the bottom plate 2 of the model vehicle body can be fixed by screw fasteners such as screws. A number of Dewars are provided on the Dewar mounting plate. In one embodiment, there are 4 Dewars on the Dewar mounting plate. Each Dewar contains a superconductor, which is used to generate a levitation force when interacting with the permanent magnet track during the operation of the model vehicle. Specifically, any Dewar is fixed on the Dewar mounting plate by screw fasteners; there is a Dewar mounting groove on the vehicle body frame, and there is a Dewar mounting interface corresponding to the Dewar on the model vehicle body shell 1. The Dewar and the Dewar mounting plate are connected by screws, and the direction of the Dewar mounting plate is determined. At the same time, pay attention to the protrusion and depression of the screws. The Dewar is installed in place from the side through the Dewar mounting groove on the model vehicle body frame 3, and the Dewar pressing block is fixed by screws to prevent the Dewar from slipping out. The screws are not allowed to have protrusions and depressions.

[0055] Dewars are arranged at the four corner positions of the Dewar mounting plate to ensure more uniform cooling of the entire system, avoid local overheating or overcooling, and maintain the optimal working temperature of the superconducting material; at the same time, uniform cooling reduces thermal stress caused by uneven temperature, extends the service life of the system, and improves the stability and reliability of the system.

[0056] Specifically, there is at least one installation cavity 31 on the model vehicle body frame 3 for fixing the mover connection device 6; ensuring that the installation position of the mover connection device 6 is more accurate and stable, avoiding local stress concentration caused by improper installation, thereby improving the stability of the overall structure; making the mover connection device 6 closely combined with the vehicle body frame, reducing vibration during operation, and enhancing the smoothness of driving.

[0057] Furthermore, the mover connection device 6 includes:

[0058] A power connection member 61 and a first connection member 62, a second connection member 63, and a third connection member 64 connected in a Z - shape in sequence;

[0059] One end of the power connection member 61 is elastically hinged to the middle of the second connection member 63, and the other end is fixedly connected to the top of the mover 4;

[0060] Both ends of the second connection member 63 are elastically hinged to the first connection member and the first end of the third connection member respectively. The second ends of the first connection member 62 and the third connection member 64 both extend longitudinally and are elastically hinged to the opposite vertical sides of the installation cavity 31 respectively.

[0061] By setting elastic hinge points at multiple positions (one end of the power connecting member 61 is elastically hinged to the middle of the second connecting member 63, and both ends of the second connecting member 63 are elastically hinged to the first connecting member 62 and the third connecting member 64 respectively), the entire mover connecting device 6 has a certain flexibility, can better adapt to the small displacements caused by vibration, impact or temperature changes during the operation of the vehicle body, reduce stress concentration, and avoid structural damage. The Z-shaped connection method can evenly distribute the load on multiple connecting members, avoid excessive force on a single connection point, and improve the load-bearing capacity and stability of the system.

[0062] One end of the power connecting member 61 is fixedly connected to the top of the mover 4, and the other end is elastically hinged to the middle of the second connecting member 63, ensuring that power can be directly and efficiently transmitted from the mover 4 to the vehicle body frame. The elastic hinge setting method can absorb and buffer vibration while transmitting power, reducing the impact on the vehicle body.

[0063] In this embodiment, the model vehicle body shell 1 includes:

[0064] Two streamline vehicle body shells and a straight-section vehicle body shell. The two streamline vehicle body shells are respectively located at the longitudinal two ends of the straight-section vehicle body shell, and the streamline vehicle body shell is detachably and fixedly connected to the straight-section vehicle body shell. Thus, it can be replaced according to the different streamline structures of the simulated vehicle models to meet the replacement needs of different model vehicle bodies, providing a high-speed train model with geometric similarity, high strength, and light weight to the actual train for the test platform; providing test conditions for the aerodynamic performance test and research of the ultra-high-speed vacuum pipeline and the train. The shape of the model vehicle meets the placement requirements of the internal monitoring equipment and test equipment, and at the same time meets the aerodynamic performance of the ultra-high-speed train and the vehicle body strength requirement of 125 kPa for the aerodynamic load.

[0065] In this embodiment, a first plug-in member 11 and a second plug-in member 12 that cooperate with each other are respectively arranged vertically on the model vehicle body shell 1 and the model vehicle body frame 3. The first plug-in member 11 and the second plug-in member 12 are inserted into each other to realize the connection between the model vehicle body shell 1 and the model vehicle body frame 3; compared with the traditional bolt or welding connection method, the plug-in members can significantly reduce the assembly time, improve the production efficiency, ensure the accurate alignment between the vehicle body shell and the frame, and avoid structural instability caused by assembly errors. If it is necessary to maintain the interior of the vehicle body or replace components, the vehicle body shell can be quickly disassembled by simply pulling out the plug-in members without using special tools or destructive means.

[0066] On the basis of the above embodiments, the present application further includes a sensor assembly and a control device. The sensor assembly is located on the model vehicle and is used to detect the vehicle body state parameters during the operation of the model vehicle; the control device is connected to the sensor assembly and is used to upload the vehicle body state parameters of the model vehicle to the host computer.

[0067] The sensor assembly includes one or several of a vibration sensor 7, an in-vehicle noise sensor 8, a suspension height sensor 9, and a lateral displacement sensor 10. Preferably, high-speed cameras, an in-vehicle noise sensor 8, a vibration sensor 7, a suspension height sensor 9, a lateral displacement sensor 10, a multi-functional collector, a Dewar serial server, etc. are symmetrically arranged at both ends of the vehicle body. It also includes a wireless AP, a PTC, a switch, a network IO, a vehicle-mounted power supply, and a trigger controller. Vertical acceleration sensors, longitudinal acceleration sensors, infrared temperature sensors, and lateral acceleration sensors are respectively arranged at both longitudinal ends of the mover 4.

[0068] In a specific embodiment, the ultra-high-speed maglev dynamic model system provided by the present application is suspended on a permanent magnet track. Below are two movers 4 hinged together. Each mover 4 includes 10 permanent magnets. After the mover 4 is subjected to magnetic force, it is transmitted to the mover connection device 6. The model vehicle is tightly connected to the mover 4 through the mover connection device 6 to achieve the traction and braking of the model vehicle. The permanent magnet track, the mover 4, the Dewar, and the magnetic steel are several major components of the traction system. Using a motor, a drive power supply, an energy storage device, a position detection system, and a drive control system, the operating speed of 700 km / h under normal pressure is achieved, breaking through the speed limit of 400 km / h of the existing dynamic model system.

[0069] The model vehicle adopts a streamlined outer shape design. The streamlined length meets the aerodynamic requirements of high-speed trains, and other outer shapes can meet the installation space requirements of in-vehicle equipment. The length, width, and height of the 1:3 scale are 12000 mm, 1000 mm, and 855 mm respectively; the exterior coating of the vehicle body is simple. Except for the load-bearing structure made of aluminum alloy material, the rest are all made of carbon fiber reinforced composite materials. The outer surface of the model vehicle is sprayed with metallic paint, and the color and pattern are determined according to requirements. The model vehicle consists of a model vehicle body shell 1, a model vehicle body bottom plate 2, a model vehicle body skeleton 3, a Dewar connection device, a traction device, etc. Dewars, traction devices, equipment compartments, limit protection devices, etc. are provided on the vehicle body skeleton, and sufficient installation space is reserved for easy assembly and disassembly of corresponding components. Covers are provided outside the corresponding interfaces. The covers and the vehicle body shell are provided with corresponding interfaces to ensure the outer shape structure of the vehicle body.

[0070] It can withstand an acceleration ≥ 25g, a maximum deceleration ≥ 35g; the structure can withstand an impact acceleration ≥ 40g; it can withstand the traction and braking conversion time ≤ 3 ms; the decoupling requirements of the model vehicle and the mover connection device 6: lateral and vertical decoupling, the interference of the mover 4 on the model vehicle does not exceed 0.1g, and longitudinal vibration damping; it can withstand a maximum pneumatic pressure of 125 kPa.

[0071] Vehicle body assembly

[0072] The model vehicle body frame 3 (excluding the limit rod) is connected by fasteners. Attention should be paid to the straightness and perpendicularity requirements of the limit bracket, traction device, and Dewar installation groove, which are less than 0.2 mm, and the centering error between the Dewar and the traction device is less than 0.3 mm. When installing and wiring the detection equipment and the model vehicle body frame 3, it should be arranged as evenly as possible, and the center of gravity of the vehicle body should be close to the center line of the vehicle body. The model vehicle body shell 1 (excluding various covers) is positioned and connected to the model vehicle body frame 3 through the mounting bracket. The model vehicle body floor 2 is installed on the model vehicle body frame 3.

[0073] In the preparation stage of the polymorphic coupling rail transit dynamic model test platform, the assembled vehicle body is connected to the mover 4 through the connecting device, and the limit rod is installed. During assembly, support pads of appropriate height should be placed under the lower end of the vehicle body frame slider. The Dewar and the Dewar mounting plate are connected by screws, and there should be no protrusions or depressions. Pay attention to the direction of the mounting plate. Through the Dewar installation groove of the vehicle body frame, the Dewar is installed in place from the side, and the Dewar pressing block is fastened with screws to prevent the Dewar from slipping out. The screws should not have protrusions or depressions.

[0074] The model has a simple structure, and it is simple and convenient to replace the streamlined head shape. It has a high degree of modularization. During the test process, only one person is required to complete the head shape replacement, which greatly releases the personnel operation requirements. At the same time, the test cycle can be shortened by more than 1 day. The same test bench can meet the test requirements of different scale ratio models, breaking through the existing operating speed limit of 400 km / h and reaching 700 km / h.

[0075] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications to these embodiments once they know the basic creative concept. Therefore, the appended claims are intended to be construed as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0076] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these changes and modifications.

Claims

1. An ultra-high-speed vacuum pipeline magnetic levitation dynamic model system, characterized in that: Includes model car and external equipment; The model car comprises a model car body shell, a model car body bottom plate and a model car body frame; the model car body bottom plate is arranged at the bottom end of the model car body shell, the model car body shell and the model car body bottom plate are fixedly connected to form an accommodating space for accommodating internal equipment; the model car body frame is respectively connected to the model car body shell and the model car body bottom plate, and is used to bear the load of the model car body shell and the model car body bottom plate; The external device includes a mover and a dewar assembly, wherein the mover is arranged below the bottom plate of the model vehicle body and extends longitudinally, and the top of the mover is detachably fixedly connected to the model vehicle body frame via a mover connecting device penetrating the bottom plate of the model vehicle body; the dewar assembly is located below the bottom plate of the model vehicle body and is detachably fixedly connected to the bottom plate of the model vehicle body and the model vehicle body frame, respectively.

2. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 1 is characterized in that: The Dewar assembly includes: A Dewar mounting plate is located below the bottom plate of the model vehicle body and is detachably fixedly connected to the bottom plate of the model vehicle body; A plurality of dewars are all located on the dewar mounting plate. Superconductors are installed in the dewars for generating suspension force by interacting with the permanent magnetic track when the model car is running.

3. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 2 is characterized in that: Any of the dewars is fixed to the dewar mounting plate via threaded fasteners; The vehicle body frame is provided with a dewar installation groove, and the vehicle body shell is provided with a dewar installation interface corresponding to the dewar.

4. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 2 is characterized in that: The Dewars are arranged at the four corners of the Dewar mounting plate.

5. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 1 is characterized in that: The model vehicle body frame is provided with at least one mounting cavity for fixing the mover connecting device.

6. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 5 is characterized in that: The mover connection device comprises: A power connecting member and a first connecting member, a second connecting member and a third connecting member connected in sequence in a Z shape; One end of the power connecting member is elastically hinged to the middle part of the second connecting member, and the other end is fixedly connected to the top end of the mover; The two ends of the second connecting member are elastically hinged to the first ends of the first connecting member and the third connecting member respectively, and the second ends of the first connecting member and the third connecting member extend longitudinally and are elastically hinged to the two opposite vertical sides of the installation cavity respectively.

7. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 1 is characterized in that: The model vehicle body shell comprises: Two streamlined section body shells and a straight section body shell, the two streamlined section body shells are respectively located at the longitudinal ends of the straight section body shell, and the streamlined section body shell is detachably fixedly connected to the straight section body shell.

8. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 7 is characterized in that: A first connector and a second connector that match each other are respectively arranged vertically on the model vehicle body shell and the model vehicle body frame. The first connector and the second connector are plugged into each other to achieve the connection between the model vehicle body shell and the model vehicle body frame.

9. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to any one of claims 1 to 8, characterized in that: Also includes: A sensor assembly, located on the model car, for detecting body state parameters of the model car during operation; The control device is connected to the sensor assembly and is used to upload the body state parameters of the model car to the host computer.

10. The ultra-high-speed vacuum pipeline magnetic levitation dynamic model system according to claim 1, characterized in that: The sensor assembly includes one or more of a vibration sensor, an in-vehicle noise sensor, a suspension height sensor, and a lateral displacement sensor.

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