Car body structure of a maglev vehicle

Abstract

The present invention discloses a car body structure of a maglev vehicle, belonging to the technical field of maglev rail transit. It includes a shell, a framework, a bottom plate and at least one dewar. Among them, the shell and the bottom plate are connected to form a car body space. The framework is arranged in the car body space, and the framework is fixedly connected to the shell and the bottom plate respectively, and is used to bear the loads of the shell and the bottom plate. The top surface of at least one dewar is fixedly installed on the framework, and its side surface is fixedly installed on the inner side wall, so as to realize the stable connection between the dewar and the car body. And by arranging a superconductor in the dewar, the stable suspension during the operation of the maglev vehicle is realized. The car body structure of the maglev vehicle provided by the present invention can effectively reduce the weight of the car body structure on the premise of ensuring the strength of the car body, realize the lightweight design of the car body, and ensure that the suspension acting force of the car body can be stably and continuously transmitted to the car body, ensuring that the car body can achieve self-stability of suspension and guidance, so that the maglev vehicle can adapt to the ultra-high-speed operation environment.

Description

Technical Field

[0001] The present invention belongs to the technical field of maglev rail transit, and particularly relates to a car body structure of a maglev vehicle. Background Art

[0002] With the rapid development of China's social economy, people's living standards and consumption demands have gradually increased. Correspondingly, people's life rhythms have become more compact, and more convenient travel methods and faster travel speeds have gradually become the core demand points that people focus on when traveling. Although the existing traffic methods can achieve a relatively high traffic speed, they obviously cannot meet the travel needs of ultra-long distances in a short time. Therefore, in order to meet the above needs, due to its high speed, the maglev rail transit industry has been in a booming development stage in recent years in the related technical fields of maglev rail transit.

[0003] In the technical field of maglev rail transit, the high-temperature superconducting maglev technology uses the diamagnetism of high-temperature superconductors to suspend the model vehicle above the permanent magnet track, has self-guiding performance, and can achieve self-stability of suspension and guidance, enabling the high-temperature superconducting maglev technology to achieve ultra-high-speed operation. The high-temperature superconducting maglev uses a Dewar structure installed on the car body to overcome the gravity of the car body and its attached equipment to achieve suspension. The control of the car body weight is related to the suspension height of the car body. Therefore, when designing the car body, while ensuring that the car body has sufficient stiffness and strength, the weight of the model vehicle system is minimized as much as possible. However, the conventional maglev car bodies in the prior art cannot meet the above requirements, and there is a gap in the field of superconducting maglev lightweight car body technology in the prior art. Summary of the Invention

[0004] In view of one or more of the above defects or improvement requirements of the prior art, the present invention provides a car body structure of a maglev vehicle, which can effectively reduce the weight of the car body structure on the premise of ensuring the strength of the car body, realize the lightweight design of the car body, and ensure that the suspension acting force of the car body can be stably and continuously transmitted to the car body, ensuring that the car body can achieve self-stability of suspension and guidance, so that the maglev vehicle can adapt to the ultra-high-speed operation environment.

[0005] To achieve the above object, the present invention provides a car body structure of a maglev vehicle, including: a shell, a framework, a bottom plate, and at least one Dewar; wherein,

[0006] The shell and the bottom plate are connected to form a car body space, the framework is longitudinally arranged in the car body space, and the framework is fixedly connected to the shell and the bottom plate respectively, and is used for bearing the loads of the shell and the bottom plate;

[0007] The at least one Dewar is disposed between the framework and the bottom plate, and its top end face is fixedly installed on the bottom end face of the framework through a connecting plate, and the lateral side wall of the Dewar is fixedly connected to the inner side wall of the housing; and

[0008] At least one accommodation cavity is arranged inside the Dewar, and a superconductor is fixedly installed in the accommodation cavity, which is used to generate a stable levitation force when interacting with the magnetic track during the operation of the maglev vehicle to maintain the levitation state of the vehicle body.

[0009] As a further preference of the present invention, at least one framework insertion member is arranged on the end face of the framework facing away from the bottom plate, and a corresponding housing insertion member is arranged on the inner side of the housing, and the framework insertion member and the housing insertion member are inserted and matched with each other.

[0010] As a further preference of the present invention, the housing includes an outer layer plate, an interlayer plate and an inner layer plate. The outer layer plate and the inner layer plate are made of CFRP / t1 material, and the interlayer plate is made of PET / t8 material.

[0011] As a further preference of the present invention, the outer layer plate and the inner layer plate are 4-layer carbon fiber prepreg composite plates.

[0012] As a further preference of the present invention, at least one end of the head and tail of the housing is in a water droplet-shaped structure.

[0013] As a further preference of the present invention, the framework is a hollowed-out bracket arranged along the running direction of the vehicle.

[0014] As a further preference of the present invention, the framework and the bottom plate are fixedly connected by arranging at least one trapezoidal bracket and / or symmetrically arranging at least a pair of U-shaped brackets.

[0015] As a further preference of the present invention, the bottom plate is made of CFRP / t1 material.

[0016] As a further preference of the present invention, a plurality of embedded bolts are arranged longitudinally along the transverse sides of the bottom plate. Correspondingly, L-shaped empty grooves with through holes are arranged on the transverse sides at the bottom end of the housing, and the housing and the bottom plate are fixedly connected by means of bolt connection.

[0017] As a further preference of the present invention, the framework is made of aluminum alloy material.

[0018] As long as the above-mentioned improved technical features do not conflict with each other, they can be combined with each other.

[0019] Generally speaking, compared with the prior art, the beneficial effects of the above technical solutions conceived by the present invention include:

[0020] (1) The car body structure of a maglev vehicle according to the present invention constructs a car body space by using a shell and a bottom plate, and realizes an integrated structure of the shell, the bottom plate, and the skeleton by arranging a skeleton fixedly connected to both of them. At the same time, through a Dewar fixedly connected to the skeleton, the levitation force generated between the Dewar and the track magnetic rail is continuously and stably transmitted to the car body structure through the skeleton structure, so that the car body structure can bear the loads generated during high-speed movement, and the stability of the car body structure during high-speed operation is improved.

[0021] (2) The car body structure of a maglev vehicle according to the present invention prepares the outer layer plate and the inner layer plate of the shell by using CFRP / t1 material, and prepares the sandwich plate of the shell by using PET / t8 material. The shell with a three-layer structure is not only relatively light in overall weight, realizing the lightweight of the car body, but also has excellent structural strength and stiffness under high-temperature conditions, ensuring that the shell can bear the loads generated during high-speed operation. At the same time, the shell has good airtightness, avoiding the leakage of gas inside the car body from damaging the operation environment of the maglev vehicle.

[0022] (3) The car body structure of a maglev vehicle according to the present invention realizes the integration of the skeleton, the shell, and the bottom plate by using an aluminum alloy rectangular skeleton with a hollow structure. The skeleton can reduce the structural weight as much as possible on the premise of ensuring the structural strength, realizing the lightweight of the car body structure. At the same time, through the plug-in connection method between the skeleton and the shell, the load of the shell can be stably transmitted to the skeleton, reducing the fasteners arranged between the skeleton and the shell, effectively reducing the weight of the car body structure, and further realizing the lightweight of the car body structure.

[0023] (4) The car body structure of a maglev vehicle according to the present invention has a simple structure and high reliability. By adopting a combination of technical means such as preparing the shell and the bottom plate with lightweight materials, fixedly connecting the shell and the bottom plate to the hollow skeleton, plug-in connection between the shell and the skeleton, and fixed connection between the Dewar and the skeleton, the skeleton can stably transmit the levitation force generated by the Dewar to the car body structure, ensure that the car body has excellent structural strength, realize the lightweight of the car body structure at the same time, facilitate the control of the levitation of the car body structure, ensure the stable operation of the maglev vehicle, and has excellent economic benefits and promotion value. Description of the Drawings

[0024] Figure 1 is a longitudinal partial sectional view of the car body structure of a maglev vehicle in the present invention;

[0025] Figure 2 is a sectional view taken along line A-A of the car body structure of a maglev vehicle in the present invention.

[0026] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0027] 1. Housing; 11. Housing plug-in member; 12. Mounting plate;

[0028] 2. Skeleton; 21. Skeleton plug-in member; 22. Trapezoidal bracket; 23. U-shaped bracket;

[0029] 3. Bottom plate; 4. Dewar. Detailed implementation mode

[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", 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 the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present invention, unless otherwise clearly specified and defined, the terms "mount", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0035] Embodiment:

[0036] As Figure 1 、 Figure 2 As shown in , the car body structure of the maglev vehicle in the preferred embodiment of the present application can achieve the light weight of the car body structure on the premise of ensuring its own structural strength, and can continuously and stably transmit the levitation force to the car body, realizing the stability of the car body suspension and self-guidance, and further enabling the maglev vehicle to adapt to the ultra-high-speed operation environment.

[0037] Specifically, in the preferred embodiment of the present application, the car body structure includes a housing 1, a framework 2, a bottom plate 3 and at least one dewar 4. Among them, the housing 1 and the bottom plate 3 are correspondingly connected to form a car body space for accommodating the structures and equipment required for the stable operation of the vehicle. The framework 2 is arranged in the car body space, and the framework 2 is fixedly connected to both the housing 1 and the bottom plate 3 at the same time, so that all the loads of the car body and the bottom plate 3 during operation or prohibition can be stably transmitted to the framework 2. At least one dewar 4 is arranged between the framework 2 and the bottom plate 3, the top surface of which is fixedly installed on the bottom surface of the framework 2 through a connecting plate arranged, and the lateral side walls are fixedly connected to the inner side wall of the housing 1 to realize the installation and fixation of the dewar 4. At the same time, at least one accommodating cavity is arranged inside the dewar 4, and a superconductor is installed in the accommodating cavity for generating a stable levitation force with the magnetic track during the operation of the maglev vehicle to maintain the suspended state of the car body.

[0038] It should be noted that the vehicle running direction and the track extension are longitudinal, the vehicle horizontal width direction is transverse, and the direction perpendicular to the track horizontal plane is vertical.

[0039] Furthermore, the overall structure of the housing 1 is a cylindrical structure arranged longitudinally on the track, and an opening is provided on the side end surface of the cylindrical structure facing the track for installing the bottom plate 3, thereby forming the car body space. Preferably, at least one end of the longitudinal two ends (i.e., the head and tail ends) of the cylindrical structure is integrally in a water droplet shape, so that the air resistance received by the car body can be reduced as much as possible when the car body is running at high speed.

[0040] More specifically, in a preferred embodiment of the present application, the housing 1 is preferably a three-layer structure, which from the outside to the inside along the radial direction of the housing 1 are an outer layer plate, an interlayer plate, and an inner layer plate. Among them, both the outer layer plate and the inner layer plate are made of CFRP / t1 material (i.e., carbon fiber reinforced polymer matrix composite material) or CFRP / ti material (carbon fiber reinforced composite material / titanium alloy laminated structure). This CFRP / t1 material or CFRP / ti material not only has a low density but also has excellent tensile strength and stiffness, and can maintain its own mechanical properties unchanged in a high-temperature environment, so that the outer layer plate and the inner layer plate prepared with this material can adapt to the loads and temperatures generated during the high-speed maglev movement. Preferably, in order to ensure the structural strength of the outer layer plate, the outer layer plate is made of a 4-layer carbon fiber prepreg composite plate. Of course, the inner layer plate can also be made of this 4-layer carbon fiber prepreg composite plate. Further preferably, the interlayer plate is preferably made of PET / t8 material (polyethylene terephthalate), which also has relatively good mechanical properties and can achieve the function of gas blocking, so that when the maglev vehicle runs in a hollow pipeline, the air inside the housing 1 will not leak out into the vacuum pipeline and damage the hollow environment inside the hollow pipeline.

[0041] In order to achieve a lightweight connection between the housing 1 and the framework 2, in a preferred embodiment of the present application, at least one housing insertion member 11 is provided on the inner side of the housing 1. Correspondingly, a framework insertion member 21 is also provided at the corresponding position on the end face of the framework 2 facing away from the bottom plate 3. The connection between the housing 1 and the framework 2 is achieved through the insertion between the two, so that the housing 1 can stably transfer the vertical load to the framework 2 without using fastening connectors and stably transmit the driving force of the framework 2 to the housing 1. Preferably, the housing insertion member 11 is a vertically extending rod structure, which is arranged at intervals along the longitudinal direction at the top inside the housing 1. Correspondingly, the framework insertion member 21 is a vertically extending slot structure, which is also arranged at intervals along the longitudinal direction at the position corresponding to the housing insertion member 11 on the end face of the framework 2 facing away from the bottom plate 3. In actual use, the rod structure will directly insert into the slot structure, thereby realizing the stable insertion between the rod and the slot, reducing the weight of the connection structure between the housing 1 and the framework 2, and reducing the weight of the entire vehicle body structure.

[0042] Furthermore, in a preferred embodiment of the present application, horizontal mounting plates 12 extending transversely are provided on both lateral sides of the opening of the housing 1, such that an L-shaped empty groove is formed between the mounting plate 12 and the bottom end surface of the housing 1. During the actual fixed installation process, the bottom plate 3 is laid in the symmetrically arranged L-shaped empty groove and is fixedly connected to the housing 1 through bolt connection. Preferably, a plurality of embedded bolts are arranged longitudinally along the lateral side of the bottom plate 3. Correspondingly, through holes are provided at the corresponding positions of the mounting plate 12 of the housing 1. After the corresponding matching of the bottom plate 3 and the mounting plate 12 of the housing 1 is completed, the fixed connection between the housing 1 and the bottom plate 3 is realized through the internal bolts, avoiding the influence on the airtightness of the vehicle body structure caused by opening screw holes on the bottom plate 3.

[0043] Further preferably, a number of equipment mounting holes are provided on the bottom plate 3, such that equipment that needs to extend out of the vehicle body space can pass through the equipment mounting holes and be fixedly connected to the framework 2. For example, the mover connection mechanism needs to pass through the equipment mounting holes and be fixedly connected to the framework 2, so that the mover connection mechanism can stably transmit the mover driving force to the framework 2, thereby driving the movement of the vehicle body structure. In order to ensure the airtightness of the vehicle body space, preferably, mounting covers are also provided at the corresponding positions of the equipment mounting holes. After the equipment installation is completed, the equipment mounting holes are sealed through the mounting covers, avoiding the leakage of gas in the vehicle body space through the equipment mounting holes.

[0044] More specifically, in a preferred embodiment of the present application, the bottom plate 3 and the housing 1 have the same structure and material, that is, the bottom plate 3 adopts a three-layer structure, which, from outside to inside, successively adopts CFRP / t1 material or CFRP / ti material, PET / t8 material, CFRP / t1 material or CFRP / ti material, such that the bottom plate 3 can, like the housing 1, have excellent structural strength and airtightness to meet the requirements of high running speed and high vacuum degree of the superconducting maglev train.

[0045] Further, in a preferred embodiment of the present application, the framework 2 includes at least one hollow rectangular bracket (i.e., a hollow rectangular bracket) longitudinally arranged in the vehicle body space. The structure of the hollow rectangular bracket can reduce the weight of the framework 2 as much as possible while ensuring its own structural strength. Preferably, at least one trapezoidal bracket 23 and / or at least a pair of symmetrically arranged U-shaped brackets 23 are provided between the framework 2 and the bottom plate 3 to achieve a fixed connection between the framework 2 and the bottom plate 3. For example, two trapezoidal brackets 23 are symmetrically arranged at the longitudinal ends of the rectangular bracket, and several pairs of U-shaped brackets 23 are symmetrically arranged along the longitudinal central axis on the transverse sides of the rectangular bracket to ensure a stable connection between the framework 2 and the bottom plate 3. Preferably, the open end of the U-shaped bracket 23 faces the vehicle body space, and at the same time, the U-shaped bracket 23 and the mounting plate 12 of the housing 1 share bolts provided on the bottom plate 3 to realize the integrated fixed installation of the U-shaped bracket 23, the bottom mounting plate 12 of the housing 1, and the bottom plate 3, thereby reducing the occupation of the space at the bottom of the framework 2 by the U-shaped bracket 23 and facilitating the installation of the equipment inside the vehicle body.

[0046] Further preferably, in a preferred embodiment of the present application, at least one Dewar 4 is arranged on the end face of the framework 2 facing the bottom plate 3. Preferably, the Dewar 4 extends longitudinally and is symmetrically arranged along the longitudinal central axis of the framework 2. In order to ensure that the Dewar 4 can be accurately aligned with the track magnetic rail while being stably fixed on the framework 2 with a small transverse dimension, preferably, a connecting plate is provided between the Dewar 4 and the framework 2. The Dewar 4 is first fixedly installed on the fixing plate, and then the fixing plate is installed on the framework 2, thereby realizing the fixed installation between the Dewar 4 and the firmware.

[0047] Here, since conventional metal materials will be affected by magnetic structures such as track magnetic rails, in order to avoid the interaction between components in the vehicle body structure and magnetic structures, in a preferred embodiment of the present application, the framework 2, the trapezoidal bracket 23, the U-shaped bracket 23, the connecting plate, and the bolts and nuts are all made of aluminum alloy material, which can not only avoid the interaction with the track magnetic rail, but also have the characteristics of low density and high strength, making the vehicle body structure lighter.

[0048] The vehicle body structure of a maglev vehicle in the present invention has a simple structure and high reliability. By adopting a combination of technical means such as preparing the housing 1 and the bottom plate 3 with lightweight materials, fixedly connecting the housing 1 and the bottom plate 3 to the hollow framework 2, inserting and connecting between the housing 1 and the framework 2, and fixedly connecting the Dewar 4 and the framework 2, the framework 2 can stably transfer the levitation force generated by the Dewar 4 to the vehicle body structure, ensure that the vehicle body has excellent structural strength, and at the same time realize the lightweight of the vehicle body structure, which is beneficial to controlling the levitation of the vehicle body structure and ensuring the stable operation of the maglev vehicle, and has excellent economic benefits and promotion value.

[0049] Those skilled in the art can easily understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The car body structure of a maglev vehicle, characterized in that include: A shell, a frame, a bottom plate and at least one Dewar; wherein, The shell and the bottom plate are connected to form a vehicle body space, the frame is arranged in the vehicle body space along the longitudinal direction, and the frame is fixedly connected to the shell and the bottom plate respectively, and is used to bear the load of the shell and the bottom plate; The skeleton is provided with at least one skeleton plug-in component on the end surface facing away from the bottom plate, and a shell plug-in component is correspondingly provided on the inner side of the shell, and the skeleton plug-in component and the shell plug-in component are matched and plugged; The frame includes at least one hollow rectangular bracket arranged in the vehicle body space along the longitudinal direction; At least one trapezoidal bracket and at least one pair of symmetrically arranged U-shaped brackets are provided between the frame and the bottom plate; the open end of the U-shaped bracket faces the vehicle body space, and the U-shaped bracket and the mounting plate of the shell share a bolt provided on the bottom plate, which is used for the integrated fixed installation of the U-shaped bracket, the mounting plate and the bottom plate; The at least one dewar is disposed between the frame and the bottom plate, and its top end surface is fixedly mounted on the bottom end surface of the frame through a connecting plate, and the transverse side wall of the dewar is fixedly connected to the inner side wall of the shell; and At least one accommodating cavity is arranged inside the dewar, and a superconductor is fixedly installed in the accommodating cavity for generating a stable suspension force by acting with the magnetic track during the operation of the maglev vehicle to maintain the suspension state of the vehicle body.

2. The car body structure of the maglev vehicle according to claim 1, wherein, The shell comprises an outer plate, a sandwich plate and an inner plate. The outer plate and the inner plate are made of CFRP / t1 material, and the sandwich plate is made of PET / t8 material.

3. The car body structure of the maglev vehicle according to claim 2, wherein, The outer layer plate and the inner layer plate are four-layer carbon fiber prepreg composite plates.

4. The car body structure of the maglev vehicle according to claim 1, wherein, At least one end of the shell has a water drop-shaped structure.

5. The car body structure of the maglev vehicle according to any one of claims 1 to 4, wherein, The base plate is made of CFRP / t1 material.

6. The car body structure of the maglev vehicle according to any one of claims 1 to 4, wherein, A plurality of embedded bolts are arranged longitudinally on both sides of the bottom plate, and correspondingly, L-shaped slots with through holes are arranged on both sides of the bottom end of the shell, and the shell and the bottom plate are fixedly connected by bolt connection.

7. The car body structure of the maglev vehicle according to any one of claims 1 to 4, wherein, The frame is made of aluminum alloy.

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