Cabin structure of emergency air bag and aircraft

Abstract

The cabin structure comprises the air bag, an air bag cabin body and an air inlet assembly, the air bag is arranged on the air bag cabin body, and the air bag cabin body is used for being connected with an aircraft body; the air inlet assembly communicates with the air bag. Connecting pieces are distributed on the air bag in the circumferential direction of the air bag, the air bag is connected with the air bag cabin through the connecting pieces, and the connecting pieces are used for restraining the air bag. Connecting belts are distributed on the air bag in the axial direction and / or the annular direction of the air bag and connected with the air bag cabin body. The buoyancy can be provided for the water surface emergency landing aircraft, then sufficient escape time is provided for a pilot, and therefore the survival success rate is increased.

Description

Technical Field

[0001] The invention relates to the technical field of lifesaving equipment, and in particular to a cabin structure of an emergency airbag and an aircraft. Background Art

[0002] When a helicopter is flying over the sea and a malfunction occurs and an emergency landing is required, an emergency flotation system is needed to provide buoyancy for the helicopter, thereby providing the pilot with sufficient escape time, thereby increasing the success rate of rescue. Summary of the invention

[0003] The purpose of the present invention is to provide a cabin structure of an emergency airbag and an aircraft, which can provide buoyancy for a helicopter making an emergency landing on the water surface, thereby providing the pilot with sufficient escape time, thereby improving the success rate of rescue.

[0004] The technical solution adopted by the present invention is: A cabin structure of an emergency airbag comprises an airbag, an airbag cabin and an air intake assembly, wherein the airbag is arranged on the airbag cabin, and the airbag cabin is used to be connected with an aircraft body; the air intake assembly is communicated with the airbag; The airbag is provided with connecting plates distributed along the circumference of the airbag, and the airbag is connected to the airbag cabin through the connecting plates, and the connecting plates are used to constrain the airbag; the airbag is provided with connecting belts distributed along the axial direction and / or the circumferential direction of the airbag, and the connecting belts are connected to the airbag cabin; the connecting belts are used to connect the important components of the airbag and the airbag cabin, and their main function is to bear and transfer loads. According to force analysis and installation requirements, connecting belts are provided in the axial direction and circumferential direction of the airbag, and are respectively connected to the corresponding installation interfaces of the airbag cabin.

[0005] Preferably, the airbag is provided with a safety valve and an inflation and deflation valve.

[0006] Preferably, the front end of the airbag is larger than the rear end of the airbag.

[0007] Preferably, the airbag is divided into a plurality of independent compartments, and the air intake assembly is connected to each compartment respectively.

[0008] Preferably, the air intake assembly mainly includes an air intake elbow, a high-pressure hose and a tee, and the air intake elbow is connected to each compartment of the airbag through the tee via the high-pressure hose.

[0009] Preferably, the airbag cabin comprises a cabin and a skin, the skin cover is arranged on the cabin, the skin is connected to the cabin via a breaking rope, and the skin is used to cover the airbag before inflation in the cabin.

[0010] Preferably, the cabin is made of aluminum alloy; The skin material is a flexible polyurethane coated fabric.

[0011] Preferably, a plurality of cabin mounting seats are distributed along the circumference of the cabin at the bottom of the cabin; and reinforcing ribs are transversely arranged on the cabin.

[0012] Preferably, a plurality of connection belt mounting seats are spaced apart on the cabin body along the circumference of the cabin body, and the connection belt mounting seats are used for connecting the connection belt of the airbag with the cabin body; The cabin body is provided with a plurality of connecting piece installation strips spaced apart along the circumference of the cabin body, and the connecting piece installation strips are used to connect the connecting piece of the airbag with the cabin body; Skin mounting strips are distributed on the hull along the circumference of the hull, and the skin is connected to the skin mounting strips through breaking ropes.

[0013] An aircraft, the bottom of the aircraft body is provided with a cabin structure of the emergency airbag as described above.

[0014] The beneficial effects of the present invention are: The present invention is connected with the body through the airbag cabin body, and the airbag and the airbag cabin body are effectively connected through the connecting piece and the connecting belt. It can adapt to various special-shaped airbags. The uninflated airbag is stored in the airbag cabin body before work, and is arranged in the airbag cabin body through the skin cover. When the aircraft, especially the helicopter, needs to make an emergency landing on the water due to a malfunction, the airbag is inflated to break through the skin and protrude out of the airbag cabin body, which can provide buoyancy for the helicopter making an emergency landing on the water surface, and further provide the pilot with sufficient escape time, thereby improving the success rate of rescue. It is particularly suitable for various types of helicopters and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of the emergency airbag cabin in an embodiment of the present invention.

[0016] Figure 2 yes Figure 1 Top view of the .

[0017] Figure 3 It is a schematic diagram of the structure of an airbag according to an embodiment of the present invention.

[0018] Figure 4 yes Figure 3 AA section view.

[0019] Figure 5 yes Figure 3 BB cross-sectional view.

[0020] Figure 6 Schematic diagram of the emergency airbag cabin structure in a sealed state according to an embodiment of the present invention.

[0021] Figure 7 Schematic diagram of the emergency airbag cabin structure in the deployed state according to an embodiment of the present invention.

[0022] Figure 8 Schematic diagram of the structure of the air intake assembly in an embodiment of the present invention.

[0023] Fig. 9Schematic diagram of an aircraft with a cabin structure of an emergency airbag in a sealed state according to an embodiment of the present invention.

[0024] Fig.10 Schematic diagram of an aircraft with a cabin structure of an emergency airbag in an inflated state according to an embodiment of the present invention.

[0025] In the figure: 1-aircraft, 2-airbag cabin, 3-air inlet assembly, 4-airbag, 5-connecting belt, 6-connecting plate, 7-safety valve, 8-charging and discharging valve, 9-cabin, 10-skin, 11-breaking rope, 12-cabin mounting seat, 13-reinforcement ribs, 14-connecting belt mounting seat, 15-connecting plate mounting strip, 16-skin mounting strip, 17-bilge bottom, 18-intake elbow, 19-high-pressure hose, 20-tee. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like are involved, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0028] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium. It can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] Example 1 A cabin structure of an emergency airbag, such as Figure 1 to Figure 8 As shown, it includes an airbag 4, an airbag cabin 2 and an air intake assembly 3, the airbag 4 is arranged on the airbag cabin 2, the airbag cabin 2 is used to be connected to the body; the air intake assembly 3 is connected to the airbag; the air intake assembly 3 is used to connect the air source device and the airbag.

[0030] A connecting piece 6 is distributed along the circumference of the airbag on the airbag, and the airbag 4 is connected to the airbag cabin body 2 through the connecting piece 6, and the connecting piece 6 is used to constrain the airbag; the airbag 4 is distributed along the axial direction of the airbag and / or the circumferential direction of the airbag, and the connecting piece 5 is connected to the airbag cabin body 2; the connecting piece is used to connect the important parts of the airbag and the airbag cabin body, and its main function is to bear and transfer the load. According to the force analysis and installation requirements, connecting pieces are provided in the axial direction and circumferential direction of the airbag, and are respectively connected to the corresponding installation interfaces of the airbag cabin body; through the airbag The capsule body is connected to the aircraft body, and the airbag is effectively connected to the capsule body through connecting plates and connecting belts. It can adapt to various special-shaped airbags. The uninflated airbag is stored in the airbag capsule before work and is arranged in the airbag capsule through the skin cover. When the aircraft, especially a helicopter, needs to make an emergency landing on water due to a malfunction, the airbag inflates and breaks through the skin to protrude out of the airbag capsule, which can provide buoyancy for the helicopter making an emergency landing on the water, and then provide the pilot with sufficient escape time, thereby improving the success rate of rescue.

[0031] The connecting belt distributed along the axial direction of the airbag is as follows (the axial direction of the airbag is the long axis direction of the capsule-shaped special-shaped airbag in this embodiment): the length direction of the connecting belt is arranged along the axial direction of the airbag, the connecting belt goes around the top of the airbag along the long axis of the airbag, and the two ends of the connecting belt hang down from the two ends of the airbag; The connecting belts distributed circumferentially along the airbag are: a plurality of connecting belts arranged circumferentially are distributed in sequence along the axial direction of the airbag at intervals, the connecting belts arranged circumferentially bypass the top of the airbag along the short axis of the airbag, and are arranged at the front and rear ends of the airbag respectively.

[0032] A connecting sleeve is distributed on the outer wall of the airbag, and the connecting belt passes through the connecting sleeve.

[0033] Furthermore, a safety valve 7 and an air charging and discharging valve 8 are provided on the airbag; the safety valve on the airbag realizes a pressure relief protection function, and the air charging and discharging valve realizes the air charging and discharging and sealing functions of the airbag.

[0034] Furthermore, the front end of the airbag 4 is larger than the rear end of the airbag 4, so that the airbag is formed into a special-shaped airbag, which is an irregular "capsule" shape with a small front end and a large rear end. The special-shaped airbag has the advantages of not interfering with other equipment of the aircraft when inflated and deployed, fitting closely to the belly of the helicopter, having good floating stability, a small drag coefficient, and good impact load, and has broad application prospects.

[0035] Furthermore, the airbag 4 is divided into a plurality of independent compartments, and the air intake assembly 3 is connected to each compartment respectively; if any compartment is damaged, the reliability of the airbag is ensured, and the total buoyancy can basically maintain the floating performance.

[0036] In a specific embodiment, the airbag 4 is divided into two independent compartments.

[0037] Furthermore, the air intake assembly mainly includes an air intake elbow 18, a high-pressure hose 19 and a tee 20. The air intake elbow 18 is connected to each compartment of the airbag through the tee 20 and the high-pressure hose 19; n compartments are equipped with n-1 tees (20).

[0038] When the number of compartments is 2, the number of tees is 1. The main function of the air intake assembly is to evenly supply the air source provided by the inflation assembly to each compartment of the airbag. The front airbag has two compartments. To ensure balanced air intake in the two compartments of the front airbag, the air intake assembly is designed as a three-way air intake method with a symmetrical structure.

[0039] Example 2 The airbag cabin is further limited on the basis of Example 1, and the performance of Example 2 after the limitation is better.

[0040] The airbag cabin 2 includes a cabin 9 and a skin 10 . The skin 10 is covered on the cabin 9 . The skin 10 is connected to the cabin 9 via a breaking rope 11 . The skin 10 is used to cover the airbag 4 before inflation in the cabin 9 .

[0041] Furthermore, the cabin body 9 is a cast aluminum part; the cabin body 9 is made of thickened aluminum alloy to ensure the overall strength of the cabin body; The skin is made of flexible polyurethane coated fabric, which is connected to the cabin body by a breaking rope. The flexible skin facilitates the folding and packaging of special-shaped airbags. The overall structure combines a flexible skin with a cast aluminum rigid cabin, which is convenient for folding and packaging of special-shaped airbags. The cabin is provided with mounting seats and mounting strips to achieve installation with special-shaped airbags and the fuselage.

[0042] Furthermore, a plurality of cabin mounting seats 12 are distributed along the circumference of the cabin at the bottom of the cabin 9; the cabin mounting seats 12 are used as reserved connecting ports of the cabin 9, and can be installed with the helicopter body; The cabin body is laterally provided with reinforcing ribs 13; on the one hand, the reinforcing ribs can enhance the overall structural strength of the cabin body, and on the other hand, an air intake assembly connection interface is provided, and the air intake assembly can be connected and fixed to the cabin body through a connecting rope.

[0043] Furthermore, a plurality of connecting belt mounting seats 14 are distributed at intervals along the circumference of the cabin body, and the connecting belt mounting seats 14 are used to connect the connecting belt of the airbag to the cabin body; the end of the connecting belt is divided into multiple connecting branch belts, and the connecting belt is connected to the corresponding connecting belt mounting seats on the cabin body through each connecting branch belt.

[0044] A plurality of connecting piece mounting strips 15 are distributed at intervals along the inner side edge of the cabin body in the circumferential direction of the cabin body, and the connecting piece mounting strips 15 are used to connect the connecting piece of the airbag with the cabin body; Skin mounting strips 16 are distributed along the circumference of the cabin body, and the skin is connected to the skin mounting strips 16 by breaking ropes; a plurality of holes are provided on the skin mounting strips along a circle of the cabin body, and the holes are used to pass the breaking ropes, and the cabin body and the skin can be connected and fixed by connecting ropes.

[0045] Furthermore, the air intake assembly is arranged at the bottom of the cabin 17 .

[0046] An aircraft, the bottom of the aircraft body is provided with a cabin structure of the emergency airbag as described above.

[0047] Furthermore, the aircraft may include helicopters, airplanes, and the like.

[0048] Working principle of the present invention: The emergency floating airbag is installed with the body through the threaded connection at the cabin mounting seat. The specific installation position is as follows: Fig. 9 As shown, the connection strength is reliable. Before working, the airbag is stored in the cabin and covered in the cabin by the skin. When the emergency float receives the start signal, the gas source device releases high-pressure gas, and the gas enters the two airbag compartments through the air supply pipeline and the diverter high-pressure hose of the air intake assembly. The airbag is inflated and deployed. When the expansion force of the airbag increases to a certain extent, the breaking rope connecting the skin and the cabin breaks, the skin separates from the cabin, and the airbag is thrown out. Finally, the airbag is inflated and formed to provide buoyancy for the aircraft that is forced to land on the water. Fig.10 shown.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A cabin structure of an emergency airbag, characterized in that: The airbag comprises an airbag (4), an airbag cabin (2) and an air intake assembly (3), wherein the airbag (4) is arranged on the airbag cabin (2), and the airbag cabin (2) is used to be connected to a machine body; the air intake assembly (3) is in communication with the airbag; A connecting piece (6) is distributed on the airbag along the circumference of the airbag, and the airbag (4) is connected to the airbag cabin (2) via the connecting piece (6), and the connecting piece (6) is used to constrain the airbag; a connecting belt (5) is distributed on the airbag (4) along the axial direction of the airbag and / or the circumference of the airbag, and the connecting belt (5) is connected to the airbag cabin (2); the connecting belt is used to connect the airbag and the airbag cabin.

2. The cabin structure of the emergency airbag according to claim 1, characterized in that: The air bag is provided with a safety valve (7) and an air charging and discharging valve (8).

3. The cabin structure of the emergency airbag according to claim 1, characterized in that: The front end of the airbag (4) is larger than the rear end of the airbag (4).

4. The cabin structure of the emergency airbag according to claim 1, characterized in that: The air bag (4) is divided into a plurality of independent compartments, and the air intake assembly (3) is respectively connected to each compartment.

5. The cabin structure of the emergency airbag according to claim 4, characterized in that: The air intake assembly comprises an air intake elbow (18), a high-pressure hose (19) and a tee (20). The air intake elbow (18) is connected to each compartment of the air bag through the tee (20) and the high-pressure hose (19).

6. The cabin structure of the emergency airbag according to claim 1, characterized in that: The airbag cabin (2) comprises a cabin (9) and a skin (10), wherein the skin (10) is covered on the cabin (9), the skin (10) is connected to the cabin (9) via a breaking rope (11), and the skin (10) is used to cover the airbag (4) before inflation in the cabin (9).

7. The cabin structure of the emergency airbag according to claim 6, characterized in that: The material of the cabin body (9) is aluminum alloy; the material of the skin is flexible polyurethane coated fabric.

8. The cabin structure of the emergency airbag according to claim 1, characterized in that: A plurality of cabin mounting seats (12) are distributed along the circumference of the cabin at the bottom of the cabin (9); and reinforcing ribs (13) are provided on the cabin.

9. The cabin structure of the emergency airbag according to claim 1, characterized in that: A plurality of connection belt mounting seats (14) are spaced apart on the cabin body along the circumference of the cabin body, and the connection belt mounting seats (14) are used for connecting the connection belt of the airbag to the cabin body; The cabin body is provided with a plurality of connection piece installation strips (15) spaced apart along the circumference of the cabin body, and the connection piece installation strips (15) are used for connecting the connection piece of the air bag to the cabin body.

10. An aircraft, characterized in that: The cabin structure of the emergency airbag as claimed in claim 1 is provided at the bottom of the aircraft body.

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