Cabin suitable for low-vacuum single-suspension-frame aircraft

Abstract

The invention relates to the technical field of low-vacuum aircrafts, and discloses a cabin suitable for a low-vacuum single-suspension-frame aircraft. Wherein the cabin body comprises a sealing cover, a sealing unit and an equipment mounting unit, the sealing cover is connected with the equipment mounting unit through the sealing unit, the sealing cover comprises a metal cover body, a transverse reinforcing unit and a longitudinal reinforcing unit, and the transverse reinforcing unit and the longitudinal reinforcing unit are arranged outside the metal cover body; a groove is formed in the connecting position of the metal cover body and the equipment mounting unit and used for arranging the sealing unit, the equipment mounting unit comprises a metal upper cover plate and a metal framework, the metal framework is of a net-shaped framework structure formed by welding metal cross beams and metal longitudinal beams, and the metal upper cover plate is arranged above the metal framework. Therefore, the cabin for the low-vacuum superconducting vehicle can be provided, the cabin is connected with the equipment mounting unit in a matched mode through the sealing cover, and the cabin has the equipment sealing function while bearing is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of low-vacuum aircraft, and particularly to a cabin body applicable to a low-vacuum single-suspension aircraft. Background Art

[0002] The ultra-high-speed low-vacuum pipeline maglev transportation system combines superconducting electric suspension and low-vacuum pipeline technology to form a new type of transportation vehicle for ultra-high-speed operation. The superconducting electric suspension vehicle uses a cryogenic superconducting magnet as the motor rotor, and relies on the interaction between the magnetic field generated by the cryogenic superconducting magnet and the propulsion magnetic field of the ground propulsion coil to generate forward thrust, levitation force and guiding force. The whole vehicle runs in a low-vacuum pipeline, which can reduce the pipeline cross-section and solve the problems of aerodynamic drag and noise caused by ultra-high-speed operation.

[0003] As an important part of the aircraft structure, the cabin body structure provides an installation interface for in-cabin equipment, and bears the vibration load generated during the operation of the aircraft and the inertial load generated by the acceleration and deceleration of the equipment. Since the aircraft runs in a vacuum pipeline with extremely low air pressure, the cabin body structure needs to have a sealing function to provide a normal pressure environment for the in-cabin equipment installed inside, and to avoid the problem of insulation damage of the equipment due to the low air pressure environment.

[0004] In the prior art, a device installation mechanism made of aluminum alloy is proposed, which is a reticulated hollow structure formed by welding cross beams and longitudinal beams. The cross beams and longitudinal beams are arranged alternately, the longitudinal beams are non-disconnected beams, and the cross beams are welded between the longitudinal beams. According to the device installation requirements, plate members are welded on the cross beams and longitudinal beams for device installation.

[0005] However, this prior art only realizes the device bearing function. Since it does not have a sealing function, the device is exposed to a low vacuum, which will cause device damage. Summary of the Invention

[0006] The present invention provides a cabin body applicable to a low-vacuum single-suspension aircraft, which can solve the technical problems in the prior art.

[0007] The present invention provides a cabin body applicable to a low-vacuum single-suspension aircraft, wherein the cabin body includes a sealing cover, a sealing unit and a device installation unit. The sealing cover is connected to the device installation unit through the sealing unit. The sealing cover includes a metal cover body, a transverse strengthening unit and a longitudinal strengthening unit. The transverse strengthening unit and the longitudinal strengthening unit are arranged outside the metal cover body. A groove is provided at the position where the metal cover body is connected to the device installation unit for arranging the sealing unit. The device installation unit includes a metal upper cover plate and a metal skeleton. The metal skeleton is a reticulated frame structure formed by welding metal cross beams and metal longitudinal beams, and the metal upper cover plate is arranged above the metal skeleton.

[0008] Preferably, the metal housing is further provided with a ventilation opening, an electrical connection flange and an observation port.

[0009] Preferably, the metal upper cover plate is made of aluminum alloy plate and welded to the metal skeleton as a whole.

[0010] Preferably, through holes are provided around the equipment installation unit for cooperating with bolts to realize the connection with the sealing cover.

[0011] Preferably, the sealing unit is an O-ring seal.

[0012] Preferably, the metal skeleton further includes sill beams provided at both ends of the reticulated frame structure.

[0013] Preferably, the sill beam includes a rectangular vertical plate, an arc vertical plate and a lower cover plate. The two ends of the rectangular vertical plate are connected to the arc vertical plate and then arranged on the lower cover plate. Crescent-shaped stiffeners are provided inside the sill beam.

[0014] Preferably, the metal skeleton further includes a longitudinal skeleton strengthening unit connected to the metal cross beam.

[0015] Preferably, threaded blocks with internal threads are provided on the metal upper cover plate for installing on-board equipment.

[0016] Preferably, a reinforcing plate is provided between the metal upper cover plate and the metal longitudinal beam.

[0017] Through the above technical solutions, a cabin for a low-vacuum super-navigating vehicle can be provided. The cabin is connected by cooperating the sealing cover with the equipment installation unit, and can have the function of equipment sealing while realizing load bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings included are used to provide a further understanding of the embodiments of the present invention, and form a part of the specification, and are used to illustrate the embodiments of the present invention and, together with the written description, to explain the principles of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Shows a schematic diagram of a cabin suitable for a low-vacuum single-suspension frame vehicle according to an embodiment of the present invention;

[0020] Figure 2 Shows a schematic diagram of the structure of an equipment installation plate according to an embodiment of the present invention;

[0021] Figure 3 Shows a schematic diagram of the structure of a sealing cover according to an embodiment of the present invention;

[0022] Figure 4Shows a schematic diagram of the installation of a sealing ring according to an embodiment of the present invention. Detailed implementation

[0023] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps described in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and devices should be regarded as part of the authorized specification. In all the examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0026] As Figures 1-3As shown in the figure, an embodiment of the present invention provides a cabin suitable for a low-vacuum single-suspension frame vehicle. The cabin includes a sealing cover 1, a sealing unit 3, and an equipment installation unit 4. The sealing cover 1 is connected to the equipment installation unit 4 through the sealing unit 3. The sealing cover 1 includes a metal cover body 33, a transverse strengthening unit 31, and a longitudinal strengthening unit 32. The transverse strengthening unit 31 and the longitudinal strengthening unit 32 are arranged outside the metal cover body 33. A groove is provided at the position where the metal cover body 33 is connected to the equipment installation unit 4 for arranging the sealing unit 3. The equipment installation unit 4 includes a metal upper cover plate 21 and a metal skeleton. The metal skeleton is a reticular frame structure formed by welding metal cross beams 24 and metal longitudinal beams 23. The metal upper cover plate 21 is arranged above the metal skeleton.

[0027] Among them, both the transverse strengthening unit and the longitudinal strengthening unit are reinforcing ribs.

[0028] Through the above technical solution, a cabin for a low-vacuum super-navigation vehicle can be provided. The cabin is connected in cooperation with the equipment installation unit through the sealing cover, and can have the function of equipment sealing while realizing load bearing.

[0029] According to an embodiment of the present invention, the metal cover body 33 is further provided with a ventilation opening 34, an electrical connection flange 35, and an observation port.

[0030] For example, the sealing cover is an aluminum alloy welded structure, which is welded by a metal cover body and external transverse and longitudinal reinforcing rib units (reinforcing ribs). A trapezoidal groove is machined below the metal cover body for installing the sealing unit. Ventilation openings are provided at the front and rear of the metal cover body for heat dissipation of the equipment during ground operation; electrical connection flanges are provided on both sides for connecting cables between the equipment inside the cabin and external equipment; an observation port is provided on the sealed cabin for observing the operation status of the internal equipment.

[0031] According to an embodiment of the present invention, the metal upper cover plate 21 is made of an aluminum alloy plate and is welded to the metal skeleton as a whole.

[0032] For example, the equipment installation unit is an aluminum alloy welded structure. The upper cover plate is a whole aluminum alloy plate, which has good sealing performance; the metal skeleton is a reticular structure formed by welding cross beams and longitudinal beams, ensuring the overall stiffness and strength of the equipment installation unit. The upper plate is welded to the lower cross and longitudinal beams as a whole (i.e., the equipment installation plate) to realize the installation of the on-board equipment and bear the pneumatic pressure and the vibration and impact loads of the equipment.

[0033] According to an embodiment of the present invention, through holes are provided around the equipment installation unit 4 for cooperating with bolts to realize the connection with the sealing cover 1.

[0034] By arranging through holes around, it can be installed in cooperation with the sealing cover through bolts, ensuring the normal pressure environment inside the cabin and realizing the sealing function.

[0035] According to an embodiment of the present invention, the sealing unit 3 is an O-ring seal, as Figure 4 shown.

[0036] According to an embodiment of the present invention, the metal skeleton further includes a bolster 22, which is arranged at both ends of the reticulated frame structure.

[0037] According to an embodiment of the present invention, the bolster 22 includes a rectangular vertical plate, an arc vertical plate and a lower cover plate. The two ends of the rectangular vertical plate are connected to the arc vertical plate and then arranged on the lower cover plate. The inside of the bolster is provided with crescent-shaped stiffeners.

[0038] Thus, a bolster with higher stiffness can be obtained.

[0039] According to an embodiment of the present invention, the metal skeleton further includes a skeleton longitudinal strengthening unit 25, which is connected to the metal cross beam 24.

[0040] Among them, the skeleton longitudinal strengthening unit is a stiffener.

[0041] According to an embodiment of the present invention, a threaded block 26 with an internal thread is arranged on the metal upper cover plate 21 for installing the on-board equipment 2.

[0042] According to an embodiment of the present invention, a reinforcing plate 27 is arranged between the metal upper cover plate 21 and the metal longitudinal beam 23.

[0043] Thus, the deformation of the upper cover plate under air pressure can be reduced.

[0044] The following describes the cabin of the low-vacuum single-suspension frame vehicle according to the present invention with reference to examples. Among them, the cabin includes: 1 equipment installation plate, 1 sealing ring, 1 sealing cover. The equipment is installed inside the cabin structure and fixed on the equipment installation plate. When the vehicle is about to enter a low-vacuum environment, the sealing cover is buckled onto the equipment installation plate and fastened with bolts to complete the sealing.

[0045] The equipment installation plate is as Figure 2 shown, and includes 1 upper cover plate, 2 L-shaped longitudinal beams, 7 L-shaped cross beams, 16 longitudinal stiffeners, 40 reinforcing plates, 2 bolsters, and 24 threaded blocks. The upper cover plate has good sealing performance and is machined from a whole aluminum alloy plate. The L-shaped longitudinal beams, L-shaped cross beams and longitudinal stiffeners are welded into a load-bearing frame structure. The two side bolsters are formed by resistance welding of rectangular vertical plates, arc vertical plates and lower cover plates, and are internally provided with crescent-shaped stiffeners for improving the stiffness of the bolsters. Threaded blocks are welded on the upper cover plate, and their interiors are provided with threads for installing equipment. Reinforcing plates are arranged between the upper cover plate and the L-shaped longitudinal beams to reduce the deformation of the upper cover plate under air pressure.

[0046] The structure of the sealing cover is as Figure 3As shown, the sealing cover body is of an aluminum alloy welded structure, and 8 transverse reinforcing ribs and 5 longitudinal reinforcing ribs are welded on the outside of the cover body. A trapezoidal groove is opened at the bottom of the cover body, as Figure 4 shown, and an O-ring seal is used for sealing. The ventilation openings, electrical connection ports and observation ports can all be designed in the form of flange docking, and 10 screws can be used to fasten and install the ventilation flange.

[0047] The specific assembly process is as follows:

[0048] 1. Fix the in-cabin equipment to the equipment mounting plate through bolts, and lay the cables between the equipment;

[0049] 2. Lift the sealing cover above the equipment mounting plate, connect the in-cabin cables to the inside of the electrical connection flange of the sealed cabin, and connect the out-of-cabin cables to the outside of the electrical flange;

[0050] 3. After completing the connection of the cables passing through the cabin, snap the O-ring into the slot of the sealing cover, and press the sealing cover and the equipment mounting plate tightly through the M12 bolts around to achieve sealing.

[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom", etc. is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0052] For the convenience of description, spatial relative terms such as "above...", "above...", "on the upper surface of...", "above" etc. can be used here to describe the spatial positional relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional statements, these terms have no special meaning, and therefore should not be construed as limiting the scope of protection of the present invention.

[0054] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A cabin suitable for a low vacuum single suspension aircraft, characterized in that: The cabin body includes a sealing cover, a sealing unit and an equipment installation unit. The sealing cover is connected to the equipment installation unit through the sealing unit. The sealing cover includes a metal cover body, a transverse reinforcement unit and a longitudinal reinforcement unit. The transverse reinforcement unit and the longitudinal reinforcement unit are arranged on the outside of the metal cover body. A groove is arranged at the position where the metal cover body is connected to the equipment installation unit for setting the sealing unit. The equipment installation unit includes a metal upper cover plate and a metal frame. The metal frame is a mesh frame structure welded by metal cross beams and metal longitudinal beams. The metal upper cover plate is arranged above the metal frame.

2. The cabin according to claim 1, characterized in that: The metal cover is also provided with ventilation holes, electrical connection flanges and observation ports.

3. The cabin according to claim 2, characterized in that: The metal upper cover is made of aluminum alloy plate and is welded to the metal frame as a whole.

4. The cabin according to claim 1, characterized in that: Through holes are arranged around the equipment installation unit for cooperating with bolts to realize connection with the sealing cover.

5. The cabin according to claim 4, characterized in that: The sealing unit is an O-ring.

6. The cabin according to claim 5, characterized in that: The metal frame also includes pillow beams, which are arranged at both ends of the mesh frame structure.

7. The cabin according to claim 6, characterized in that: The bolster comprises a rectangular upright plate, an arc upright plate and a lower cover plate. The two ends of the rectangular upright plate are connected with the arc upright plates and are arranged on the lower cover plate. A crescent-shaped reinforcing rib is arranged inside the bolster.

8. The cabin according to claim 6, characterized in that: The metal frame also includes a frame longitudinal reinforcement unit connected to the metal cross beam.

9. The cabin according to claim 8, characterized in that: A threaded block with internal threads is provided on the metal upper cover plate for installing cabin equipment.

10. The cabin according to claim 9, characterized in that: A reinforcement plate is arranged between the metal upper cover plate and the metal longitudinal beam.

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