Cable net structure and pressure cabin

Abstract

The application discloses a cable net structure and a pressurized cabin. The cable net structure comprises a cable frame and a cable net, the cable net is arranged in the cable frame, and edges are connected with the inner side of the cable frame through quick-connection fixing pieces. The cable net is formed by weaving or 3D printing technology, uniform distribution of mesh holes is formed in the cable net, and the shape of the mesh holes is polygonal. The cable net structure and the pressurized cabin can realize quick installation, and the stress performance and durability of the cable net structure are good.

Description

Technical Field

[0001] This application relates to the field of demountable pressurized building technology, and in particular to a cable net structure and a pressurized chamber. Background Technology

[0002] Existing prefabricated pressurized buildings generally use aluminum alloy or even lighter fiberglass as the main structural material and double-layered laminated glass as the light-transmitting surface. Due to their heavy weight, they often cannot meet the load-bearing requirements of civil building floors, and have to reduce the design pressure by reducing the cross-sectional dimensions of the main structural profiles to reduce weight, which greatly limits the application scenarios of pressurized chambers.

[0003] Currently, the industry has developed pressurized buildings with cable-membrane structures, which can significantly reduce the overall weight of pressurized buildings while maintaining their design pressure. This is achieved by using transparent membrane materials inside the pressurized building to ensure airtightness while maintaining sufficient light transmission. The membrane material and cables work together to withstand the positive pressure inside the chamber. However, most current cable-membrane structures for pressurized buildings are designed for large-span buildings such as stadiums and exhibition centers. The design of cable-membrane structures is relatively complex and does not consider local stress conditions; therefore, they are not suitable for small-scale prefabricated pressurized buildings. Summary of the Invention

[0004] This application provides a cable net structure and a pressurization chamber to solve the problem that the existing pressurization building cable membrane structure design is complex and cannot be applied to pressurization buildings for miniaturized assembly.

[0005] The present invention solves the above-mentioned technical problems mainly through the following technical solutions: A cable net structure is provided, including a cable frame and a cable net. The cable net is disposed in the cable frame, and its edge is connected to the inner side of the cable frame by a quick-connect fastener. The cable net is formed by weaving or 3D printing technology, and the cable net has uniformly distributed mesh holes, the mesh holes being polygonal in shape.

[0006] In some embodiments, the cable net includes multiple main cables woven in a crisscross pattern, with rectangular mesh openings defined between the main cables. Each main cable has a quick-connect fastener at both ends, which is a buckle. The inner side of the cable frame has a slot for engaging with the buckle.

[0007] In some embodiments, the cable net further includes auxiliary cables woven into the main cables and distributed along the diagonal of each mesh defined between the main cables, wherein both the main cables and the auxiliary cables are made of stainless steel wire.

[0008] In some embodiments, the cable net is 3D printed from carbon fiber reinforced polyetheretherketone composite material, and multiple uniformly distributed honeycomb-shaped hexagonal meshes are formed within the cable net. The cross-sectional shape of each side of each hexagonal mesh is rectangular, and the quick-connect fastener is a bolt.

[0009] In some embodiments, the cable net includes a rectangular first cable net and a second cable net woven around the perimeter of the first cable net. Both the first and second cable nets are woven from Kevlar fiber. The first cable net has a plurality of evenly distributed rectangular first mesh openings, and the second cable net has a plurality of evenly distributed triangular second mesh openings. The size of the first mesh openings is larger than the size of the second mesh openings. The edge of the second cable net is provided with a reinforcing ring, which is fitted to the inner side of the cable net frame. The reinforcing ring is provided with a quick-connect fastener, which is a bolt.

[0010] In some embodiments, the cable net is woven from titanium alloy wires, with a first mesh area formed in the middle of the cable net and a second mesh area formed around the perimeter of the first mesh area, wherein the mesh size of the first mesh area is larger than that of the second mesh area.

[0011] In some embodiments, the mesh shapes of the first mesh area and the second mesh area are both rhomboid. The side length of the mesh in the first mesh area is at least twice the side length of the mesh in the second mesh area. The edge of the second mesh area is provided with the quick-connect fastener, which is a flange structure and is welded and fixed to the edge of the second mesh area. The quick-connect fastener is connected to the inner side of the cable frame by welding or bolts.

[0012] A pressurized chamber is also provided, comprising a chamber frame, a cable net structure, and a membrane structure. Each side wall of the chamber frame is provided with an installation area that is adapted to and hollowed out by the cable net structure. The cable frame of the cable net structure is fitted and fixed to the inner side of the boundary of each installation area. The membrane structure is disposed inside the cable net structure, and the edge of the membrane structure is sealed and fitted to the inner side of the cable frame.

[0013] In some embodiments, an inner protective net is also included, the edge of which is provided with a mesh frame, the mesh frame being attached and fixed to the inner side of the cable frame, and the edge of the membrane structure being sandwiched between the frame and the cable frame.

[0014] In some embodiments, the membrane structure includes a membrane body and sealing edges disposed around the periphery of the membrane body. The membrane body comprises a multilayer composite membrane. A heating element for melting the membrane body is disposed inside the membrane body. The pressurization chamber is equipped with a power source. The heating element is electrically connected to the power source via a circuit. A fire-fighting sensor is disposed inside the pressurization chamber. The fire-fighting sensor and the power source are respectively connected to a control system.

[0015] The beneficial effects of the cable net structure and pressurized chamber in this application are: The cable net structure is suitable for miniaturized pressurized buildings, and the cable net and cable frame can be installed quickly. The overall cable net structure has good load-bearing capacity and durability. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the following description of the embodiments will be briefly introduced. Obviously, the accompanying drawings described below are only one embodiment of the present invention.

[0017] Figure 1 This is a schematic diagram of one embodiment of the cable net structure provided in this invention; Figure 2 yes Figure 1 Design diagram of the node connection structure in the embodiment; Figure 3 This is a schematic diagram of another embodiment of the cable net structure provided in this invention; Figure 4 This is a schematic diagram of another embodiment of the cable net structure provided in this invention; Figure 5 This is a schematic diagram of another embodiment of the cable net structure provided in this invention; Figure 6 This is a schematic diagram of another embodiment of the cable net structure provided in this invention; Figure 7 This is a schematic diagram of the pressurization chamber provided in an embodiment of the present invention; Figure 8 This is a structural assembly diagram of the cable net structure, membrane structure, and inner protective net in the pressurization chamber provided in the embodiments of the present invention; Figure 9 This is a schematic diagram of a heating element installed inside a membrane structure in a pressurization chamber, as provided in an embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0021] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] The following disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0023] For details, please refer to Figures 1 to 5 This application provides a cable net structure, which includes a cable frame 1 and a cable net 2 disposed in the cable frame 1.

[0024] Among them, the border 1 is generally a rectangular border, but in some special use cases, it can also be designed with circular, oval or other shapes.

[0025] The cable net 2 adopts a shape that is compatible with the cable frame 1. The edge of the cable net 2 is quickly connected to the inside of the cable frame 1 through quick-connect fasteners, so as to achieve quick assembly of the two.

[0026] Cable net 2 can be woven from cables (or ropes) into a mesh, or integrally printed using 3D printing technology with suitable materials, forming multiple evenly distributed mesh openings within cable net 2. In practical applications, different mesh distributions and shapes are designed according to different usage scenarios (specifically, based on the varying loads between cable net 2 and the membrane of the pressurized building). The mesh openings can be designed to be of uniform size and shape, or with some areas having the same shape while others have different shapes. The mesh opening size can also be designed to be larger in the center and smaller at the edges, i.e., a "sparse in the middle, dense at the edges" distribution. The manufacturing process of cable net 2 is precisely configured according to the actual usage scenario, and specifically, a suitable manufacturing process can be selected based on the material of cable net 2. This significantly improves the cable net structure's load-bearing performance, durability, installation efficiency, and material utilization, thus enabling its widespread application in airtight frame-cable membrane systems for various types of prefabricated pressurized buildings.

[0027] In some embodiments, the cable net 2 adopts a uniform orthogonal rectangular design, as detailed below: The cable net 2 comprises multiple main cables 21, which are woven together in a crisscross pattern to form a net. The net 2 then defines multiple rectangular mesh openings arranged in an array. The spacing between the main cables 21, both longitudinally and laterally, is evenly distributed (e.g., the size of a single mesh opening can be designed to be 150mm × 150mm), forming a regular stress-bearing grid. The main cables 21 are woven from stainless steel wire into a cable body with a suitable diameter. The intersections (also called nodes) of the crisscrossing main cables 21 form an integrated woven structure.

[0028] Each main cable 21 has quick-connect fasteners at both ends, which are connected and fixed to the inner side of the cable frame 1. Specifically, the quick-connect fasteners can be columnar buckles of the existing technology with matching models. A slot is opened on the inner side of the cable frame 1, and the buckle is embedded in the slot. The two are engaged with each other. This design enables the quick assembly of the main cable 21 and the cable frame 1.

[0029] In this embodiment, see Figure 2 At the intersection of the two main cables 21, a first node fixing member 21a can be provided to prevent the main cables 21 from separating or shifting. The first node fixing member can be composed of two interlocking shells. The first node fixing member 21a has a cross-shaped through hole for the main cable 21 to pass through.

[0030] Taking a pressurized chamber as an example, the cable net structure 2 with its orthogonal rectangular uniform design is suitable for areas with uniform stress, such as the center of the frame sidewall of a pressurized chamber, or large-area planar pressurized chamber walls. It has advantages such as a simple force transmission path, low weaving process cost, and rapid flat positioning during installation, making it suitable for standardized mass production.

[0031] In some embodiments, see Figure 3 Based on the aforementioned orthogonal rectangular uniformly designed cable net 2, the cable net 2 also includes auxiliary cables 22. The auxiliary cables 22 are made of stainless steel wire woven into a cable body (or rope-like object) with an appropriate diameter. The auxiliary cables 22 are woven between the diagonals of the mesh formed between each main cable 21 in the cable net 2, so that the cable net 2 as a whole forms many uniformly distributed triangular meshes. The structural strength, flexibility and load-bearing capacity of the cable net 2 are effectively improved.

[0032] In some embodiments, see Figure 4 Cable net 2 features a honeycomb hexagonal design, as detailed below: The cable net 2 is formed entirely by 3D printing technology. The printing material is carbon fiber reinforced polyetheretherketone composite material. The printed cable net 2 forms multiple evenly distributed honeycomb-shaped hexagonal mesh holes inside. Multiple quick-connect fasteners are provided at intervals around the edge of the cable net 2. The edge of the cable net 2 is connected to the corresponding part of the inner side of the cable frame 1 through these quick-connect fasteners.

[0033] More specifically, in this embodiment, the quick-connect fastener uses a bolt of the appropriate type, and a screw hole corresponding to the bolt is provided on the inner side of the cable frame 1, and the bolt is installed in the screw hole.

[0034] The hexagonal mesh inside cable net 2 is typically designed with a side length of 120mm. Each corner node of the hexagonal mesh is a "Y"-shaped three-way intersection structure, achieving uniform stress distribution. Each cable interface in cable net 2 is rectangular, which significantly enhances the bending resistance of the cable.

[0035] Taking a pressurized cabin as an example, this cable mesh structure with hexagonal mesh openings is suitable for stress concentration areas such as the corners and edges of the cabin's frame sidewalls, or for parts subjected to localized impacts. The isotropic force characteristics of this hexagonal mesh structure can disperse concentrated loads. 3D printing eliminates the risk of loose nodes. Using non-metallic materials for printing effectively reduces weight and provides some corrosion resistance.

[0036] In some embodiments, see Figure 5 Cable net 2 adopts a triangular-rectangular combined topology cable net design, as detailed below: The cable net 2 is made using a woven process. The cable net 2 includes a rectangular first cable net 23 and a second cable net 24 woven around the edges of the first cable net 23.

[0037] Both the first cable net 23 and the second cable net 24 are woven from Kevlar fiber material (or rope-like material). The first cable net 23 has multiple evenly distributed rectangular first mesh openings. Specifically, the first cable net 23 is woven from multiple cables in a crisscross pattern, with the aforementioned rectangular first mesh openings formed between the cables. The second cable net 24 has multiple evenly distributed triangular second mesh openings.

[0038] More specifically, the size of the first mesh opening in the first cable net 23 is larger than the size of the second mesh opening in the second cable net 24. A reinforcing ring 241 is fixed around the edge of the second cable net 24. The material of the reinforcing ring 241 is flexibly selected according to actual needs. The reinforcing ring 241 itself is a rectangular frame structure that fits against the inner side of the cable frame 1. Multiple quick-connect fasteners are provided at intervals along the circumference of the reinforcing ring 241. The quick-connect fasteners use matching bolts, which pass through the reinforcing ring 241 and are assembled with matching screw holes on the inner side of the cable frame 1.

[0039] At each node within the first cable net 23 and the second cable net 24, a second node fixing member for preventing the separation of cable bodies (or ropes) that are intertwined with each other is provided. The second node fixing member adopts a design similar to the aforementioned first node fixing member 21a, except that the interior of the second node fixing member is provided with through holes for passing cables in a "cross" shape or a "rice" shape corresponding to different nodes, as Figure 5 a through hole with a "cross" shape is provided at the middle node c, and a through hole with a "rice" shape is provided at the node d.

[0040] Taking the pressurized cabin as an example, the design of the cable net 2 having the first cable net 23 and the second cable net 24 is applicable to scenarios where there are significant differences in the force on the edge and the center of the frame side wall of the pressurized cabin, such as at the cabin door of the pressurized cabin. The triangular second mesh hole design can enhance the edge shear resistance and torsional resistance, and the rectangular first mesh hole design in the middle can ensure uniform force transmission in the center. The entire cable net 2 presents a gradient design of "sparse in the middle and dense at the edge", which can effectively reduce material redundancy, reduce the overall weight by 15%, and effectively control the cost.

[0041] In some embodiments, referring to Figure 6 , the cable net 2 adopts a gradient design of variable density with intermediate-edge zoning, specifically as follows: The cable net 2 is woven and formed by using ropes woven from multiple titanium alloy wires. A first mesh area 2a is formed in the middle area of the cable net 2, and a second mesh area 2b is formed at the four peripheries of the first mesh area 2a. Among them, the mesh size of the first mesh area 2a is larger than the mesh size of the second mesh area 2b, thereby forming a gradient design of variable density from the inside to the outside and from sparse to dense.

[0042] More specifically, the mesh shapes of both the first mesh area 2a and the second mesh area 2b are designed as rhombuses, and the side length of the mesh in the first mesh area 2a is at least twice the side length of the mesh in the second mesh area 2b (in this embodiment, preferably, the side length of the mesh in the first mesh area 2a is twice or four times the side length of the mesh in the second mesh area 2b). The entire cable net 2 presents a whole-surface rhombic grid. The side length of the rhombic mesh in the first mesh area 2a with a larger size in the center area is designed to be 200 mm, and the side length of the rhombic mesh in the second mesh area 2b with a larger size at the edge is designed to be 100 mm. At the nodes of the ropes woven from multiple titanium alloy wires in the cable net 2, laser welding is used for fixing, and there is no additional structural design for node enhancement. At the same time, a plurality of quick-connect fixing members are arranged at intervals along the edge of the cable net 2, and are connected to the inner side of the cable frame 1 through the quick-connect fixing members.

[0043] In this process, a quick-connect fastener is installed at the edge of the second mesh area 2b (preferably at the end of the rope-like structure woven from titanium alloy wire). The quick-connect fastener adopts a conventional plate-shaped flange structure, which is welded and fixed to the end of the titanium alloy wire. The flange structure is connected to the inner side of the cable frame 1 by welding. Alternatively, the flange structure can be assembled to the inner side of the cable frame 1 by bolts of the appropriate type that pass through it. Specifically, a screw hole can be opened on the inner side of the cable frame 1, and the bolt can be embedded in the screw hole.

[0044] Taking a pressurized cabin as an example, the cable net 2 with its gradually varying density design in the middle and edge sections is suitable for scenarios where the sidewalls of the pressurized cabin frame are curved. Specifically, the center of this sidewall experiences low stress, while the edges experience high wind / air pressure loads. The cables (i.e., rope-like structures woven from titanium alloy wires) on each side of the diamond-shaped mesh transmit force obliquely to adapt to the curved surface stress, and the gradually varying density precisely matches the load gradient. Furthermore, the use of titanium alloy material provides both high strength and lightweight design, making it suitable for large-span, modular pressurized cabins.

[0045] The cable net structure of this embodiment can be applied to the specific design of a pressurized chamber as follows: See Figure 7 The pressurized chamber includes a cabin frame 3 and a cable net structure ( Figure 7 (A in the middle refers to) and membrane structure 4.

[0046] The cabin frame 3 is generally designed as a rectangular frame. Each side wall (up, down, left, right, front, and back) of the cabin frame 3 has a hollowed-out installation area adapted to the cable net structure. There can be one or more hollowed-out installation areas on each side wall. The cable frame 1 of the cable net structure is attached and fixed to the inner side of the boundary of each installation area (specifically, the cabin frame 3 has beams distributed at the boundary of each installation area, that is, the beams enclose the hollowed-out installation area, and the beams serve as the boundary of the installation area). The membrane structure 4 has the same shape as the cable net structure. The membrane structure 4 is set inside the cable net structure. The edge of the membrane structure 4 is sealed and attached to the inner side of the cable frame 1. The membrane structure 4 covers each hollowed-out installation area. The cable net structure set outside each membrane structure 4 bears the load of the membrane structure 4 under pressure and distributes the load evenly to the beams of the cabin frame 3.

[0047] Specifically, the cable frame 1 of the cable net structure is attached to the inner side of the boundary (beam) of the hollowed-out installation area, and an annular seal can be sandwiched between the two. The cable frame 1 is connected and fixed to the beam by bolts passing through it in multiple different directions.

[0048] In some embodiments, see Figure 8It also includes an inner protective net 5, which has a mesh surface and a mesh frame 51 of a certain thickness around its perimeter. The shape of the mesh frame 51 is basically the same as that of the cable frame 1. The mesh frame 51 is attached and fixed to the inner side of the cable frame 1. Specifically, the mesh frame 51 can be connected and fixed to the beam at the boundary of the installation area by bolts that pass through it and the cable frame 1. At the same time, the edge of the membrane structure 4 is sandwiched between the mesh frame 51 and the cable frame 1.

[0049] In some embodiments, see Figure 9 The membrane structure 4 includes a membrane body and sealing edges 41 around its perimeter. The membrane body is formed by multiple layers of laminated membranes. Heating elements 6 for fusing the membrane layers can be pre-embedded between adjacent membrane layers. These heating elements 6 are connected to power lines extending from the inner surface, outer surface, or edge of the membrane structure 4. A power source is located inside the pressurization chamber, and the heating elements 6 are electrically connected to this power source via the power lines. In emergency situations, the heating elements 6 can be heated to generate high temperatures that fuse the membrane body of the membrane structure 4 at its embedded location, creating a hole at the fusion point that connects the inside and outside of the membrane structure 4, thus enabling rapid depressurization inside the pressurization chamber.

[0050] In this embodiment, the heating element 6 includes, but is not limited to, using an appropriate type of heating wire.

[0051] In some embodiments, the pressurization chamber is equipped with a fire detection device, such as a smoke detector. The fire detection device and the power supply are respectively connected to the control system. The control system can use a controller of the appropriate model in the prior art. When the fire detection device detects a fire in the pressurization chamber, the control system immediately controls the power supply to supply power to the heating element 6. The heating element 6 quickly heats up and generates a temperature that can melt the membrane body of the membrane structure 4, thereby melting a hole on the surface of the membrane body of the membrane structure 4, and realizing rapid depressurization inside the pressurization chamber.

[0052] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0053] The cable net structure and pressurized chamber provided in the embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A cable net structure, characterized in that, include: Wire border (1); The cable net (2) is set in the cable frame (1) and its edge is connected to the inner side of the cable frame (1) by quick-connect fasteners. The cable net (2) is formed by weaving or 3D printing technology. The cable net (2) has uniformly distributed mesh holes. The mesh holes are polygonal in shape.

2. The cable net structure according to claim 1, characterized in that, The cable net (2) includes multiple main cables (21) woven together in a crisscross pattern. The main cables (21) define rectangular mesh openings. Each main cable (21) has a quick-connect fastener at both ends. The quick-connect fastener is a buckle. The inner side of the cable frame (1) has a slot for engaging with the buckle.

3. The cable net structure according to claim 2, characterized in that, The cable net (2) also includes a secondary cable (22), which is woven in the main cable (21) and distributed on the diagonal of each mesh defined between the main cables (21). Both the main cable (21) and the secondary cable (22) are made of stainless steel wire.

4. The cable net structure according to claim 1, characterized in that, The cable net (2) is formed by 3D printing of carbon fiber reinforced polyether ether ketone composite material. Multiple uniformly distributed honeycomb hexagonal mesh holes are formed in the cable net (2). The cross-sectional shape of each side of each hexagonal mesh hole is rectangular. The quick-connect fastener is a bolt.

5. The cable net structure according to claim 1, characterized in that, The cable net (2) includes a rectangular first cable net (23) and a second cable net (24) woven around the perimeter of the first cable net (23). Both the first cable net (23) and the second cable net (24) are woven from Kevlar fiber. The first cable net (23) has multiple evenly distributed rectangular first mesh holes, and the second cable net (24) has multiple evenly distributed triangular second mesh holes. The size of the first mesh holes is larger than the size of the second mesh holes. The edge of the second cable net (24) is provided with a reinforcing ring (241). The reinforcing ring (241) is attached to the inner side of the cable frame (1). The reinforcing ring (241) is provided with a quick-connect fastener, which is a bolt.

6. The cable net structure according to claim 1, characterized in that, The cable net (2) is woven from titanium alloy wire. The middle area of ​​the cable net (2) forms a first mesh area, and the periphery of the first mesh area forms a second mesh area. The mesh size of the first mesh area is larger than that of the second mesh area.

7. The cable net structure according to claim 6, characterized in that, The mesh shapes of the first mesh area and the second mesh area are both rhomboid. The side length of the mesh in the first mesh area is at least twice the side length of the mesh in the second mesh area. The edge of the second mesh area is provided with the quick-connect fastener. The quick-connect fastener is a flange structure and is welded and fixed to the edge of the second mesh area. The quick-connect fastener is connected to the inner side of the cable frame (1) by welding or bolts.

8. A pressurization chamber, characterized in that: The device includes a cabin frame (3), a cable net structure and a membrane structure (4) as described in any one of claims 1 to 7, wherein each side wall of the cabin frame (3) is provided with an installation area that is adapted to and hollowed out by the cable net structure, the cable frame (1) of the cable net structure is fitted and fixed to the inner side of the boundary of each installation area, the membrane structure (4) is disposed on the inner side of the cable net structure, and the edge of the membrane structure (4) is sealed and fitted to the inner side of the cable frame (1).

9. The pressurization chamber according to claim 8, characterized in that: It also includes an inner protective net (5), the edge of which is provided with a mesh frame (51), the mesh frame (51) is attached and fixed to the inner side of the cable frame (1), and the edge of the membrane structure (4) is sandwiched between the mesh frame (51) and the cable frame (1).

10. The pressurization chamber according to claim 8, characterized in that: The membrane structure (4) includes a membrane body and a sealing edge (41) disposed around the periphery of the membrane body. The membrane body includes a multi-layer composite membrane. A heating element (6) for melting the membrane body is provided inside the membrane body. The pressurization chamber is provided with a power source. The heating element (6) is electrically connected to the power source through a line. A fire-fighting sensor is provided inside the pressurization chamber. The fire-fighting sensor and the power source are respectively connected to the control system.

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