Layer-blocking rigidizable inflatable structure for rapid construction in extreme environments

Abstract

A layer-blocking rigidizable inflatable structure for rapid construction in extreme environments includes a flexible skin structure adapted to be inflated and unfolded or deflated and folded to be adapted to be switched between a use configuration and a storage configuration, the flexible skin structure forming an inflatable structure body when inflated and unfolded, and a layer-blocking member adapted to block the flexible skin structure when inflated and unfolded. The flexible skin structure is suitable for sealing internal gas and bearing internal air pressure; and the layer blocking piece is arranged on the surface of the flexible skin structure, is suitable for generating rigidity change and is suitable for reinforcing and supporting the inflatable structure main body in a rigidity state so as to maintain the form of the inflatable structure main body. The layer blocking rigidizable inflatable structure can meet different requirements for the structure in the transportation, construction and service process, and is convenient to store and transport on the basis of light weight; and after stiffening, the bearing capacity is high, gas leakage collapse can be avoided, the safety and durability of the structure are improved, and the structure can be applied to extreme environments such as the lunar surface.

Description

Technical Field

[0001] The invention relates to the technical field of rapid construction, in particular to a layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments. Background Art

[0002] Rapid construction is often used in extreme environments or temporary tasks. Inflatable structures have many advantages, such as light weight, high packaging efficiency, high volume-to-mass ratio, convenient transportation, and less on-site materials required for construction. They are one of the most practical design solutions for rapid construction in extreme environments. However, air leakage in inflatable structures is inevitable, and there is a risk of collapse when air leaks. Conventional inflatable structures need to be continuously inflated to maintain structural rigidity, and their safety, durability, and repairability are limited. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the purpose of the present invention is to propose a layer-blocked rigid inflatable structure for rapid construction in extreme environments. The layer-blocked rigid inflatable structure can be folded or unfolded with variable rigidity, which can meet the different requirements of the structure during transportation, construction and service, and is easy to store and transport on the basis of light weight; and after rigidification, it has a high load-bearing capacity, which can avoid leakage and collapse, and improve the safety and durability of the structure; at the same time, the layer-blocked rigid inflatable structure can provide an inflatable and closed use space, which can be used in extreme environments such as the moon.

[0004] The present application proposes a layer-blocked rigid inflatable structure for rapid construction in extreme environments. The layer-blocked rigid inflatable structure includes a flexible skin structure and a layer-blocking member. The flexible skin structure is suitable for being inflated and expanded or deflated and folded, so as to be suitable for switching between a use form and a storage form. The flexible skin structure forms an inflatable structure body when inflated and expanded, and the flexible skin structure is suitable for sealing internal gas and bearing internal air pressure. The layer-blocking member is arranged on the surface of the flexible skin structure, and the layer-blocking member is suitable for undergoing a change in rigidity. In the rigid state, the layer-blocking member is suitable for providing reinforcement and support to the inflatable structure body to maintain The shape of the inflatable structure body is suitable for preventing the inflatable structure body from collapsing when the flexible skin structure leaks; the layer blocking piece includes a vacuum bag and a flexible material piece, the vacuum bag is arranged on the surface of the flexible skin structure, and the vacuum bag is suitable for vacuuming or releasing the vacuum; the flexible material piece is arranged in the vacuum bag, and the flexible material piece is constructed as a plurality of flexible material pieces and the plurality of flexible material pieces are stacked; when vacuuming in the vacuum bag, the interlayer friction between the multi-layer flexible material pieces increases to adapt to the increase in the stiffness of the layer blocking piece; when releasing the vacuum in the vacuum bag, the interlayer friction between the multi-layer flexible material pieces decreases to adapt to the decrease in the stiffness of the layer blocking piece.

[0005] The layer-blocked rigidifiable inflatable structure according to the present application has the following technical effects: First, the layer-blocked rigidifiable inflatable structure is lightweight and foldable, easy to transport, and can be used in environments that require rapid construction and extreme environments; second, the present application utilizes air pressure control, which is simple to control, reversible in process, and fast in control speed, which is conducive to a variety of repetitive and operable ground tests and multiple uses; third, the air extracted during the vacuum rigidification process of the layer-blocking components can be collected and used for pressurization inside the flexible skin structure. The recycling of this part of the air is crucial for airless environments such as the lunar surface; fourth, the construction process of the layer-blocked rigidifiable inflatable structure is simple, including the main steps of inflation and deployment, vacuum rigidification, and pressurization. No additional structural materials are required for construction, and the controllable automation level is high; fifth, during the service stage of the structure, the layer-blocking components can dissipate energy through interlayer friction, which can be used to resist impact dynamic loads, moonquakes and other dynamic excitations to maintain the stability and safety of the structure.

[0006] According to some embodiments of the present application, the flexible material piece is configured as a fiber fabric.

[0007] According to some embodiments of the present application, the layer blocking member is constructed as one and is coated on the surface of the flexible skin structure; or the layer blocking member is constructed as multiple layer blocking members, multiple layer blocking members are arranged at intervals on the surface of the flexible skin structure, and the layer blocking members are constructed as strips.

[0008] According to some embodiments of the present application, when the layer-blocked rigidifiable inflatable structure is in service in the lunar environment, a lunar soil covering layer may be optionally provided on the outer surface thereof, and the lunar soil covering layer covers the outer surface of the layer-blocked rigidifiable inflatable structure when the flexible skin structure is in the use form. The lunar soil covering layer is constructed from in-situ resources on the lunar surface, and has various forms such as compacted lunar soil, lunar soil bags or lunar soil bricks.

[0009] According to some embodiments of the present application, the layer stopper is disposed on the inner surface of the flexible skin structure or the outer surface of the flexible skin structure.

[0010] According to some embodiments of the present application, the flexible skin structure includes a sealing airbag layer, a reinforcement layer and a protective layer; the sealing airbag layer is suitable for sealing the gas inside the flexible skin structure; the reinforcement layer is arranged on the outer surface of the sealing airbag layer to be suitable for bearing the air pressure inside the flexible skin structure.

[0011] According to some embodiments of the present application, the sealing airbag layer is made of a single-layer or multi-layer film material.

[0012] According to some embodiments of the present application, the reinforcement layer is constructed of high-strength fiber fabric and has isotropy.

[0013] According to some embodiments of the present application, the reinforcement layer adopts a multi-directional woven fiber fabric or multiple layers of plain woven fabric laid at different angles.

[0014] According to some embodiments of the present application, the flexible skin structure further includes a protective layer, which is constructed as a molded coating with a certain thickness and is disposed on the outer surface of the reinforcement layer to protect the reinforcement layer and the sealing airbag layer.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic structural diagram of a layer-blocking rigidifiable inflatable structure provided with multiple layer-blocking members according to some embodiments of the present application;

[0018] Figure 2 is a schematic diagram of a layer blocking member and a flexible skin structure of a layer blocking rigidifiable inflatable structure according to some embodiments of the present application;

[0019] Figure 3 is a schematic diagram of a process for recycling a layer-blocked rigidifiable inflatable structure according to some embodiments of the present application;

[0020] Figure 4 It is a structural schematic diagram of a layer blocking rigidifiable inflatable structure provided with a layer blocking member according to some embodiments of the present application;

[0021] Figure 5 is a schematic diagram of a structure in which a covering soil layer is arranged outside a layer-blocking rigidifiable inflatable structure according to some embodiments of the present application;

[0022] Figure 6 is a schematic diagram of the forces acting on the inner surface of the flexible skin structure when a layer blocking member is disposed on the inner surface of the flexible skin structure according to some embodiments of the present application;

[0023] Figure 7 It is a schematic diagram of the forces acting on the outer surface of the flexible skin structure according to some embodiments of the present application when a layer blocking member is arranged on the outer surface of the flexible skin structure.

[0024] Reference numerals:

[0025] Layer blocking can rigidify inflatable structure 100;

[0026] Flexible skin structure 10; sealing airbag layer 11; reinforcement layer 12; protective layer 13;

[0027] Layer blocking member 20; vacuum bag 21; flexible material member 22;

[0028] Lunar soil cover layer 30. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] Reference below Figure 1-Figure 7 A layer-blocked rigidifiable inflatable structure 100 for rapid construction in extreme environments according to an embodiment of the present invention is described. The layer-blocked rigidifiable inflatable structure 100 of the present application is a temporary building or temporary structure that can be rapidly constructed and can be applied to a variety of extreme environments and to cope with some temporary construction tasks.

[0031] The present application proposes a layer-blocking rigidifiable inflatable structure 100 for rapid construction in extreme environments. The layer-blocking rigidifiable inflatable structure 100 includes a flexible skin structure 10 and a layer-blocking member 20. The flexible skin structure 10 is suitable for being inflated and expanded or deflated and folded so as to be suitable for switching between a use form and a storage form. The flexible skin structure 10 forms an inflatable structure body when inflated and expanded. The flexible skin structure 10 is suitable for sealing internal gas and bearing internal air pressure. The layer-blocking member 20 is arranged on the surface of the flexible skin structure 10. The layer-blocking member 20 is suitable for undergoing a change in rigidity. In the rigidified state, the layer-blocking member 20 is suitable for providing reinforcement and support to the inflatable structure body to maintain the inflatable structure. The shape of the main body is suitable for preventing the inflatable structure main body from collapsing when the flexible skin structure 10 leaks; the layer blocking piece 20 includes a vacuum bag 21 and a flexible material piece 22, the vacuum bag 21 is arranged on the surface of the flexible skin structure 10, and the vacuum bag 21 is suitable for vacuuming or releasing the vacuum; the flexible material piece 22 is arranged in the vacuum bag 21, and the flexible material piece 22 is constructed as a plurality of flexible material pieces 22 and a plurality of flexible material pieces 22 are stacked; when vacuuming in the vacuum bag 21, the interlayer friction between the multiple layers of flexible material pieces 22 increases to adapt to the increase in the stiffness of the layer blocking piece 20; when releasing the vacuum in the vacuum bag 21, the interlayer friction between the multiple layers of flexible material pieces 22 decreases to adapt to the decrease in the stiffness of the layer blocking piece 20.

[0032] According to the layer-blocked rigid inflatable structure 100 of the present application, the flexible skin structure 10 can switch between the use form and the storage form by inflation and deflation folding. The use form refers to the expansion form of the flexible skin structure 10 after inflation, that is, the form of the flexible skin structure 10 when in service. The flexible skin structure 10 forms the inflatable structure body after inflation and expansion; the storage form refers to the form of the flexible skin structure 10 after deflation and folding. The layer blocking member 20 can change its stiffness by evacuating and releasing the vacuum bag 21. In the low-rigidity state, since the vacuum bag 21 and the flexible material member 22 both have flexible characteristics, the layer blocking member 20 of the present application can be folded after releasing the vacuum. Therefore, the whole of the layer-blocked rigid inflatable structure 100 of the present application can be folded and unfolded, which can meet the different requirements of the structure during transportation, construction and service. The layer-blocked rigid inflatable structure 100 of the present application is small in size and light in weight in the folded state, which can meet the requirements of volume and weight during transportation and is convenient for storage and transportation.

[0033] According to the flexible skin structure 10 of the present application, the flexible skin structure 10 can maintain internal sealing to prevent internal gas leakage in the use state and can withstand internal gas pressure.

[0034] According to the layer blocking member 20 of the present application, Figure 2 As shown, the layer blocking member 20 includes a vacuum bag 21 and a flexible material member 22. The air pressure of the vacuum bag 21 can be changed by evacuating and releasing the vacuum. After evacuating, an air pressure difference will be formed inside and outside the vacuum bag 21. The confining pressure generated by the air pressure difference between the inside and outside will act on the flexible material member 22, so that the interlayer friction of the multi-layer flexible material member 22 is increased, and the interlayer shear resistance is improved, thereby increasing the bending stiffness of the layer blocking member 20. During the service period of the layer blocking rigidified inflatable structure 100, the vacuumed layer blocking member 20 has a certain bending stiffness. On the one hand, it can reinforce the main body of the inflatable structure, improve the bending resistance, and improve the bearing capacity of the structure; on the other hand, it can support the main body of the inflatable structure. When the flexible skin structure 10 leaks, the structure can withstand a certain pressure and maintain its shape without collapsing, which can provide time for the safe evacuation of personnel and facilitate subsequent repair. After repair, the flexible skin structure 10 can be re-inflated and pressurized to continue to serve, thereby greatly improving the safety and repairability of the structure.

[0035] The layer blocking member 20 and the flexible skin structure 10 of the present embodiment are both controlled by air pressure, which can be realized by an automated system in practice. The construction process can be automatically completed, which is convenient for improving the degree of automation of the construction process, simplifying the operation process, and realizing rapid construction. In extreme environments such as the lunar environment, the construction implemented by automated control has significant advantages.

[0036] In addition, since the layer blocking member 20 and the flexible skin structure 10 are both controlled by air pressure, the control process is reversible, the control method is simple, and the control speed is fast. On the one hand, it is helpful to conduct a variety of repetitive and operable ground tests and multiple uses, such as inflation deployment tests, rigidification tests, pressure resistance tests, air tightness tests, construction process demonstrations, etc., which is beneficial to study the performance of the layer-blocked rigidifiable inflatable structure 100; on the other hand, it enables the layer-blocked rigidifiable inflatable structure 100 of the present application to be recycled, which can improve the utilization rate of resources and play an important role in extreme environments such as the lunar environment.

[0037] like Figure 3 As shown, the recycling process of the layer-blocking rigidifiable inflatable structure 100 according to the present application is as follows: first, the flexible skin structure 10 is inflated and expanded to form an inflatable structure body. Specifically, if on the ground, the air pressure inside the flexible skin structure 10 is maintained at 150Pa-250Pa. Before vacuuming, the direct interlayer constraint of the multi-layer flexible material piece 22 is very small, and the vacuum bag 21 is relatively soft. It can be expanded into a shape that adapts to the surface of the flexible skin structure 10 as it is inflated; secondly, the layer blocking piece 20 is rigidified. Specifically, after vacuuming, due to the effect of the pressure difference, the static friction between the layers increases, so that the bending stiffness of the layer blocking piece 20 increases, thereby producing a rigidification effect. The rigidified structure can also prevent leakage when the flexible skin structure 10 leaks and the internal pressure is 0Pa. The main body of the inflatable structure collapses and maintains the structural shape, which greatly improves the safety of the structure. After the above steps, the layer-blocked rigid inflatable structure 100 is built and can be put into service. At this time, the flexible skin structure 10 is in a use state. Finally, the structure is disassembled after the service is over. Specifically, the external load is removed first during disassembly. In the case of no load-bearing requirements, the vacuum of the layer-blocking member 20 can be released first, and then the air pressure inside the flexible skin structure 10 can be released, and the structure can be folded and stowed. Alternatively, while maintaining the vacuum of the layer-blocking member 20, the air pressure inside the flexible skin structure 10 can be released first, and then the vacuum in the layer-blocking member 20 can be released, and the structure can be folded and stowed. At this time, the flexible skin structure 10 is in a storage state, and the layer-blocked rigid inflatable structure 100 is folded and stored for further movement and use.

[0038] Furthermore, during the service phase of the layer-blocked rigid inflatable structure 100, friction may occur between the multiple layers of flexible material pieces 22 due to external forces, and energy can be consumed through interlayer friction, thereby being able to resist impact loads, environmental vibrations, or other dynamic excitations. The present application can further improve the stability and reliability of the layer-blocked rigid inflatable structure 100.

[0039] In addition, after the flexible skin structure 10 is unfolded, a spacious space will be formed inside the inflatable structure body. This space can be sealed and has good airtightness and safety. It can maintain the atmospheric pressure required for human activities and can be used as a working space for personnel. It can be applied to extreme environments with a lack of air such as the lunar environment.

[0040] Furthermore, the gas in the layer blocking member 20 and the flexible skin structure 10 can be recycled. For example, the gas extracted from the layer blocking member 20 can be filled into the flexible skin structure 10 for pressurization and can be recycled. In extreme environments with a lack of air such as the lunar environment, gas resources can be saved and resource utilization can be improved.

[0041] The layer-blocked rigidifiable inflatable structure 100 according to the present application has the following advantages: First, the layer-blocked rigidifiable inflatable structure 100 is lightweight and foldable, easy to transport, and can be used in environments that require rapid construction and extreme environments; second, the present application utilizes air pressure control, which is simple to control, reversible in process, and fast in control speed, which is conducive to a variety of repetitive and operable ground tests and multiple uses; third, the air extracted during the vacuum rigidification process of the layer-blocking member 20 can be collected and used for pressurization inside the flexible skin structure 10. The recycling of this part of the air is crucial for airless environments such as the lunar surface; fourth, the construction process of the layer-blocked rigidifiable inflatable structure 100 is simple, including the main steps of inflation and expansion, vacuum rigidification, and pressurization. No additional structural materials are required for construction, and the controllable automation level is high; fifth, during the service stage of the structure, the layer-blocking member 20 can dissipate energy through interlayer friction, which can be used to resist impact dynamic loads, moonquakes and other dynamic excitations to maintain the stability and safety of the structure.

[0042] In some embodiments, the layer-blocked rigidifiable inflatable structure 100 may be in a spherical, hemispherical, cylindrical, or other shape.

[0043] According to some embodiments of the present application, the flexible material piece 22 is constructed as a fiber fabric. The fiber fabric described in this embodiment refers to a flexible product composed of fiber materials and yarns interwoven. Since the fiber materials and yarns are arranged in multiple directions and interwoven with each other, the fiber materials and yarns themselves have friction characteristics, and the surface of the fiber fabric has a high friction coefficient. In this embodiment, the flexible material piece 22 is constructed as a fiber fabric, so that it is easy to generate a large friction force between the flexible material pieces 22, which can effectively improve the rigidity of the layer blocking piece 20. At the same time, the fiber fabric has high flexibility and light weight, which can improve the deformation effect of the layer blocking piece 20 and reduce the load on the inflatable structure body.

[0044] According to some embodiments of the present application, the layer blocking member 20 is configured as one and is coated on the surface of the flexible skin structure 10; or the layer blocking member 20 is configured as multiple, and multiple layer blocking members 20 are arranged at intervals on the surface of the flexible skin structure 10, and the layer blocking member 20 is configured as a strip. The number and arrangement of the layer blocking members 20 of this embodiment depends on the size of the layer blocking rigidifiable inflatable structure 100.

[0045] In some embodiments, Figure 4 As shown, the layer blocking member 20 is constructed as one and is coated on the surface of the flexible skin structure 10. The layer blocking member 20 can be operated in one step to realize vacuuming or releasing vacuum, which can improve the folding and unfolding efficiency of the layer blocking rigidifiable inflatable structure 100, simplify the construction process, and realize rapid construction. In some embodiments, as Figure 1 As shown, the layer blocking member 20 is constructed in multiple layers, and multiple strip-shaped layer blocking members 20 are arranged at intervals on the surface of the flexible skin structure 10, which is equivalent to the stiffening ribs of the inflatable structure body. Parts of each layer blocking member 20 are connected to the flexible skin structure 10 in a close fit. The multiple layer blocking members 20 of this embodiment can disperse the restraining force applied to the flexible skin structure 10. The multiple layer blocking members 20 are independent of each other and can play an additional restraining effect, so as to avoid any layer blocking member 20 from affecting the stability of the structure after losing its rigidity, and can improve the reinforcement and support effect of the inflatable structure body.

[0046] According to some embodiments of the present application, Figure 5 As shown, when the layer-blocked rigidifiable inflatable structure 100 is in service in the lunar environment, the outer surface may be optionally provided with a lunar soil covering layer 30, and the lunar soil covering layer 30 covers the layer-blocked rigidifiable inflatable structure 100 when the flexible skin structure 10 is in the use form. In this embodiment, the lunar soil covering layer 30 is mainly used in the lunar environment and is constructed from lunar in-situ resources, such as compacted lunar soil, lunar soil bags or lunar soil bricks. The lunar soil covering layer 30 covers the layer-blocked rigidifiable inflatable structure 100 when the flexible skin structure 10 is in the use form, such as Figure 5 As shown, the constructed lunar soil covering layer 30 and the layer-blocking rigidifiable inflatable structure 100 can serve as a protective layer to play the role of heat preservation, heat insulation, protection against cosmic radiation, and protection against meteorite impact.

[0047] For the layer-blocked rigid inflatable structure 100 that needs to be covered with soil in the lunar environment, in addition to considering the performance in the static stage of service, attention is also paid to the safety of the structure during the dynamic construction process. During the construction process, before the lunar soil construction is completed, a self-supporting structure is not formed. The rigidized layer-blocked rigid inflatable structure 100 plays the role of supporting the unstructured external lunar soil components and construction templates, that is, it plays the role of bearing loads and templates; the rigidized layer-blocked rigid inflatable structure 100 can also withstand the pressure applied by the lunar soil protective layer during the construction process. Further, after the lunar soil cover layer 30 is built, an independent pressure-bearing structure can also be formed, which can be self-supporting and independently load-bearing, avoiding damage to the internal layer-blocked rigid inflatable structure 100. In addition, the lunar soil cover layer 30 is made on the moon using lunar in-situ resources, such as compacted lunar soil, lunar soil bags or lunar soil bricks, which improves the utilization rate of lunar in-situ resources. Further, the construction of the lunar soil cover layer 30 is mostly a repetitive task, which is mainly completed by construction robots.

[0048] According to some embodiments of the present application, the layer blocking member 20 is disposed on the inner surface of the flexible skin structure 10 or the outer surface of the flexible skin structure 10. Whether the layer blocking member 20 of this embodiment is disposed on the inner surface or the outer surface of the flexible skin structure 10, it can achieve the technical effect of providing reinforcement and support after rigidification. In practice, due to the vacuum environment on the lunar surface, the air pressure control of the layer blocking member will have a huge impact. The layer blocking member 20 is disposed on the inner surface of the flexible skin structure 10 or the outer surface of the flexible skin structure 10, and the adaptability to the lunar surface environment should be considered.

[0049] In some embodiments, Figure 6 As shown, the layer blocking member 20 is arranged on the inner surface of the flexible skin structure 10. The flexible skin structure 10 and the layer blocking member 20 are subjected to the internal air pressure F1. A tensile force F2 is generated inside the flexible skin structure 10. Since the layer blocking member 20 will squeeze the flexible skin structure 10 under the action of F1, the flexible skin structure 10 will generate a reaction force on the layer blocking member 20, so that the layer blocking member 20 is subjected to the squeezing force of the flexible skin structure 10 and the internal gas, and can achieve a force balance. In this case, since the layer blocking rigid inflatable structure 100 has reached a balance, the pressure F3 of the external covering layer on the layer blocking rigid inflatable structure 100 will offset part of the internal pressure, but the contribution to the squeezing effect of the layer blocking member 20 is limited. Therefore, when the layer blocking member 20 is arranged inside the flexible skin structure 10, the covering layer may not be arranged outside.

[0050] In some embodiments, Figure 7As shown, the layer blocking member 20 is arranged on the outer surface of the flexible skin structure 10. In this embodiment, the flexible skin structure 10 is subjected to the internal air pressure F1, and a tensile force F2 is generated inside the structure and a force balance is achieved. At the same time, under the ground environment, the layer blocking member 20 is subjected to the air pressure in the external environment; when the internal part of the layer blocking member 20 is evacuated, it is squeezed by the flexible skin structure 10 and the ambient air pressure and becomes rigid. If the layer blocking rigidifiable inflatable structure 100 is set in an extreme environment such as the lunar environment, the external layer blocking member 20 will not be squeezed due to insufficient ambient air pressure and can be deformed freely outward. In this case, if squeezing is desired, a lunar soil covering layer 30 needs to be added to the outer surface of the layer blocking member 20. The squeezing force on the layer blocking member 20 depends on the soil pressure F3 of the external lunar soil covering layer 30. Figure 5 shown.

[0051] According to some embodiments of the present application, the flexible skin structure 10 includes a sealed airbag layer 11 and a reinforcement layer 12. The sealed airbag layer 11 is suitable for sealing the gas inside the flexible skin structure 10; the reinforcement layer 12 is arranged on the outer surface of the sealed airbag layer 11 to be suitable for bearing the gas pressure inside the flexible skin structure 10. In this embodiment, the sealed airbag layer 11 has airtightness to prevent gas leakage; the reinforcement layer 12 is arranged on the outer surface of the sealed airbag layer 11, as a main structural layer to bear the internal gas pressure of the sealed airbag layer 11, and improve the bearing capacity of the inflatable structure body.

[0052] According to some embodiments of the present application, the sealing airbag layer 11 is made of a single layer or a multi-layer film material. Specifically, the thickness of the sealing airbag layer 11 is several millimeters, and the film material can be selected from polyurethane, polyethylene, polyamide and other materials, so that the sealing airbag layer 11 has the characteristics of flexibility, lightness and good air tightness, which can be used to prevent the layer from blocking the gas leakage in the rigidifiable inflatable structure 100; at the same time, it is easy to unfold or fold and compress, and is convenient for storage and transportation.

[0053] In some embodiments, the inner surface of the sealing airbag layer 11 is further provided with an anti-scratch layer, which may be made of materials such as aramid felt, etc., to protect the sealing airbag layer 11 from mechanical damage during use.

[0054] According to some embodiments of the present application, the reinforcement layer 12 is constructed as a high-strength fiber fabric and has isotropy. In this embodiment, the reinforcement layer 12 is constructed as an isotropic high-strength fiber fabric. On the basis of being light and flexible, the high-strength fiber fabric also has the characteristics of high specific strength, cutting resistance, wear resistance and high temperature resistance, and is widely used in space structures. The reinforcement layer 12 is constructed to be isotropic, which can make the reinforcement layer 12 have the same strength everywhere, can withstand the internal air pressure at all positions, has no weak points, and has high safety. In order to meet the requirements of light weight, high strength and flexibility, specifically, the reinforcement layer 12 can be made of aramid fiber, liquid crystal fiber, etc., can withstand the internal air pressure of the flexible skin structure 10, and provide effective protection for the sealed airbag layer 11.

[0055] Further, according to some embodiments of the present application, the reinforcing layer 12 adopts a multi-directional woven fiber fabric or multiple layers of flat woven fabric laid at different angles. In this embodiment, the reinforcing layer 12 adopts a multi-directional woven fiber fabric or multiple layers of flat woven fabric laid at different angles, that is, a multi-axial cloth or a ply design can be adopted. Specifically, the reinforcing layer 12 can be designed with a flexible aramid fiber composite coated fabric ply. This embodiment can ensure the isotropy of the reinforcing layer 12, ensure that the strength of the reinforcing layer 12 in all directions is the same, ensure that each position of the reinforcing layer 12 can withstand the internal air pressure, there is no weak point, and the safety is high. In some embodiments, multiple layers of fiber fabrics can be combined together by flexible resins, coating materials or flexible adhesives; among them, special coating materials, such as high phenyl silicone rubber and fluororubber, can be used to cope with the ultra-low temperature, large temperature difference and radiation aging protection requirements of the lunar surface, which can enhance the durability of the fabric.

[0056] According to some embodiments of the present application, the flexible skin structure 10 further includes a protective layer 13, which is disposed on the outer surface of the reinforcement layer 12 to protect the reinforcement layer 12 and the sealing airbag layer 11. In this embodiment, the protective layer 13 is disposed on the outer surface of the reinforcement layer 12, which can protect the sealing airbag layer 11 and the reinforcement layer 12, prevent the reinforcement layer 12 from being directly exposed to the environment, slow down the aging process of the reinforcement layer 12 and the sealing airbag layer 11, and protect them from scratches and wear. In some embodiments, the protective layer 13 can be constructed as a molded coating, which can improve the sealing performance and prevent the flexible skin structure 10 from being punctured and leaking, thereby improving the safety of the structure.

[0057] In some embodiments, the various layers of the flexible skin structure 10 are bonded together using adhesives, and specific functional layers can be increased or decreased according to usage conditions and environmental requirements.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0059] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0060] In the description of the present invention, "plurality" means two or more.

[0061] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0062] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments, characterized in that: include: A flexible skin structure, wherein the flexible skin structure is suitable for being inflated and expanded or deflated and folded, so as to be suitable for switching between a use configuration and a storage configuration; The flexible skin structure forms an inflatable structure body when inflated and expanded, and the flexible skin structure is suitable for sealing internal gas and bearing internal gas pressure; A layer blocking member, the layer blocking member is arranged on the surface of the flexible skin structure, the layer blocking member is suitable for undergoing a stiffness change, and the layer blocking member is suitable for providing reinforcement and support to the inflatable structure body in a rigidified state to maintain the shape of the inflatable structure body, and is suitable for preventing the inflatable structure body from collapsing when the flexible skin structure leaks air; The layer blocking member comprises: A vacuum bag and a flexible material piece, wherein the vacuum bag is arranged on the surface of the flexible skin structure, and the vacuum bag is suitable for vacuuming or releasing a vacuum; The flexible material piece is arranged in the vacuum bag, and the flexible material piece is structured as a plurality of flexible material pieces, and the plurality of flexible material pieces are arranged in a stacked manner; When the vacuum bag is evacuated, the interlayer friction between the multiple layers of the flexible material pieces increases to accommodate the increased stiffness of the layer blocking piece; when the vacuum is released, the interlayer friction between the multiple layers of the flexible material pieces decreases to accommodate the reduced stiffness of the layer blocking piece.

2. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 1, characterized in that: The flexible material piece is designed as a fiber fabric.

3. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 1, characterized in that: The layer blocking member is constructed as one and is coated on the surface of the flexible skin structure; or The layer blocking members are configured in a plurality, and the plurality of layer blocking members are arranged at intervals on the surface of the flexible skin structure, and the layer blocking members are configured in a strip shape.

4. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 1, characterized in that: When the layer-blocked rigidifiable inflatable structure is in service in a lunar environment, a lunar soil covering layer may be optionally provided on the outer surface thereof, and the lunar soil covering layer covers the outside of the layer-blocked rigidifiable inflatable structure.

5. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 1, characterized in that: The layer stopper is arranged on the inner surface of the flexible skin structure or the outer surface of the flexible skin structure.

6. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 1, characterized in that: The flexible skin structure comprises: A sealing airbag layer, wherein the sealing airbag layer is suitable for sealing the gas inside the flexible skin structure; A reinforcing layer is arranged on the outer surface of the sealing airbag layer to be suitable for bearing the air pressure inside the flexible skin structure.

7. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 6, characterized in that: The sealing airbag layer is made of a single-layer or multi-layer film material.

8. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 6, characterized in that: The reinforcement layer is constructed of high-strength fiber fabric and has isotropy.

9. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 8, characterized in that: The reinforcing layer is made of multi-directional woven fiber fabric or multiple layers of flat woven fabric laid at different angles.

10. The layer-blocking rigidifiable inflatable structure for rapid construction in extreme environments according to claim 6, characterized in that: The flexible skin structure also includes: A protective layer is arranged on the outer surface of the reinforcing layer to protect the reinforcing layer and the sealing airbag layer.

Images