Aircraft concave jacking airbag device suitable for rescue at belly of aircraft
By designing a concave lifting airbag device for rescue aircraft suitable for the belly of the aircraft, the problems of poor fit and poor stress performance of existing airbags during use are solved, and the safety effect of effectively lifting the accident aircraft is achieved.
Patent Information
- Application Number
- CN202421474301.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-26
AI Technical Summary
When used, existing aircraft lifting airbags are easily pressed or wrinkled, resulting in poor fit and poor stress performance, and unable to effectively lift the accident aircraft.
A concave airbag device for rescue aircraft suitable for airplane abdomen is designed, including a plurality of concave airbags and at least one flat airbag. After the concave airbag is inflated, the middle part is concave, and the flat airbag is inflatable, and the concave airbag is stacked on the flat airbag, and the curvature gradually increases after inflation to adapt to the curvature of the airbag.
The device is small in size, light in weight, low in cost, simple in structure, easy to use, and can effectively fit the surface of the airplane's belly to ensure the safety of the aircraft body during the lifting process.
Smart Images
Figure CN222572525U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of rescue equipment, and in particular relates to a concave lifting airbag device for rescue aircraft suitable for the belly of an aircraft. Background Art
[0002] Aircraft lifting airbags are currently one of the main equipment for emergency rescue at many airports. When an aircraft has an accident, rolls over, or the fuselage touches the ground, the lifting airbag is often used to lift the accident aircraft off the ground. Compared with traditional jacks, the biggest advantage of aircraft lifting airbags is that they have good stability and high flexibility, which can effectively reduce secondary damage to the aircraft body during the lifting and rescue process. The aircraft lifting airbags currently used in airports are flat-plate lifting airbags, and the aircraft's unique convex contour (especially on the fuselage) and large deadweight often result in poor fit between the aircraft body and the flat-plate lifting airbags, poor force-bearing performance, and the upper several plate airbags are easily compressed or wrinkled. Utility Model Content
[0003] In view of the existing problems, the utility model provides a concave lifting airbag device for rescue aircraft at the belly of the aircraft, which is small in size, light in weight, low in cost, simple in structure, easy to use, fits the surface of the belly of the aircraft, and ensures the safety of the aircraft body during the lifting process.
[0004] In order to achieve the above technical purpose, the technical solution adopted by the utility model is:
[0005] A concave lifting airbag device for a rescue aircraft at the belly of an aircraft comprises a concave airbag and a flat airbag. There are multiple concave airbags, and the middle part of the concave airbag is concave after being inflated. There is at least one flat airbag, and the concave airbag is stacked on the flat airbag. The concave airbags are stacked up and down, and different concave airbags have different curvatures after being inflated, and the curvature of the concave airbag located at the top is greater than that of the concave airbag located at the bottom. The curvature of the top concave airbag after being inflated is adapted to the curvature of the belly of the aircraft, and the flat airbag is in a flat plate shape after being inflated.
[0006] To optimize the technical solution, further improvements were made including:
[0007] The upper and lower surfaces of the above-mentioned concave airbags and flat airbags are both brushed cloth layers, and a plurality of yarn drawing wires matching the brushed cloth layers are arranged between the upper and lower surfaces of each concave airbag and flat airbag. The brushed yarns and the brushed cloth layers on the upper and lower surfaces of the concave airbags and flat airbags form a whole, ensuring that the shape of the airbag is stable when filled with gas and subjected to external loads.
[0008] At least one inflation nozzle is arranged on the side of each concave air bag and the flat air bag.
[0009] A floor mat is arranged below the flat airbag and is laid on the ground.
[0010] The longitudinal sections of the above-mentioned floor mat, concave airbag and flat airbag are rectangular, the edge of each concave airbag and flat airbag is arc-shaped, and the four corners of the edge of each concave airbag and flat airbag are rounded.
[0011] An inflation nozzle is respectively arranged on the front side of each concave airbag and the flat airbag, and the inflation nozzle is fixed on the corresponding concave airbag and the flat airbag by means of threaded connection.
[0012] A filter screen is arranged inside the inflation nozzle.
[0013] The number of the above-mentioned concave airbags is 5-9.
[0014] The length of the concave airbag located at the top is not greater than that of the concave airbag located at the bottom.
[0015] Compared with the prior art, the utility model has the following beneficial effects:
[0016] 1. When using the concave lifting airbag device of the utility model, it is only necessary to first place the flat-plate-shaped airbag after inflation on the ground under the belly of the aircraft, and then stack the airbags with different curvatures after inflation from low to high in the order of curvature from small to large, and then use the inflation device to inflate each airbag to lift the body of the accident aircraft, and cooperate with other rescue equipment to drag the aircraft away from the accident area. Therefore, the concave lifting airbag device for rescue aircraft at the belly of the aircraft of the utility model has the characteristics of small size, light weight, low cost, simple structure, easy use, fits the surface of the belly of the aircraft, and ensures the safety of the aircraft body during the lifting process.
[0017] 2. The upper and lower surfaces of the concave airbag and the flat airbag of the utility model are both brushed cloth layers, and a plurality of yarns matched with the brushed cloth layers are arranged between the upper and lower surfaces. The yarns are drawn and the upper and lower surface brushed cloth layers form a whole, ensuring that the shape of the airbag is stable when filled with gas and subjected to external loads.
[0018] 3. Each single-layer airbag is independent of each other and can be freely disassembled and stacked. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a schematic diagram of the use state of the utility model;
[0020] Figure 2 It is the front view of the utility model;
[0021] Figure 3 for Figure 2 A top view of
[0022] Figure 4 A top view of a schematic structural diagram of a single airbag of the utility model;
[0023] Figure 5 It is a front view of a single concave airbag of the utility model;
[0024] Figure 6 It is a front view of a single flat airbag of the utility model.
[0025] The reference numerals in the drawings are: concave airbag 1, flat airbag 2, yarn drawing 3, and inflation nozzle 4. DETAILED DESCRIPTION
[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated 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 application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.
[0027] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.
[0028] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.
[0029] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or units (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" / "several" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three relationships, for example, "A and / or B" can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.
[0030] The utility model of the rescue lifting airbag device includes a floor mat (not shown in the figure), on top of which are firstly stacked a plurality of flat airbags 2 which are flat after being inflated, the number of layers of the flat airbags 2 is N2 (where N2≥1), the number of layers can be reasonably adjusted according to the height requirements of the use site and the purpose of use, and the number of layers given here is 1. On top of the flat airbags 2, concave airbags 1 which are concave after being inflated are stacked in order from low to high in the order of curvature from small to large, the number of layers of the concave airbags 1 is N1 (where N1≥2), the number of layers is recommended to be 5 to 9 layers, and the number of layers given here is 7. Each single-layer airbag is independent of each other and can be freely disassembled and stacked. A plurality of yarn drawing 3 are connected between the upper and lower surfaces of the inner parts of the concave airbags 1 and the flat airbags 2. The surface of each concave airbag 1 and each flat airbag 2 is a drawing cloth layer. At least one inflation nozzle 4 is provided on the side of each concave airbag 1 and each flat airbag 2.
[0031] The cross-sectional shapes of the floor mat, the concave airbag 1 and the flat airbag 2 are rectangular bodies. The cross-sectional shapes around the edges of the concave airbag 1 and the flat airbag 2 are arc-shaped, and the four corners of the edges are rounded.
[0032] An inflation nozzle 4 is provided on the side of each concave airbag 1 and each flat airbag 2 for inflating or deflating the concave airbag 1 and the flat airbag 2. The inflation nozzle 4 is threadedly connected to the connecting piece on the concave airbag 1 or the flat airbag 2. A filter net (not shown in the figure) is provided in each inflation nozzle 4 for filtering the gas input into the concave airbag 1 or the flat airbag 2.
[0033] When the utility model is used, the aircraft concave lifting airbag device for rescue at the belly of the aircraft is firstly cleaned of debris on the ground below the aircraft body, and then a floor mat is placed on the ground below the aircraft body, and a flat airbag 2 which is inflated and inflated is stacked on the floor mat, and the number of layers of the flat airbag 2 is N2 (where N2≥1), and the number of layers can be reasonably adjusted according to the height requirements of the use site and the purpose of use. Then, the concave airbags 1 are stacked in order from low to high according to the order of curvature from small to large, and the number of layers of the concave airbags 1 is N1 (where N1≥2). The inflation nozzles 4 of each layer of airbags are opened, and each airbag is inflated by the inflation device, and the inflation order is from low to high, starting from the flat airbag 2 of the bottom layer. Each concave airbag 1 or flat airbag 2 should not be completely filled first, and after each concave airbag 1 or flat airbag 2 is filled with air, the accident aircraft body is lifted by replenishing air to the concave airbag 1 and the flat airbag 2, and the aircraft is towed away from the accident area by other equipment.
[0034] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.
Claims
1. A concave lifting airbag device for rescue aircraft at the belly of an aircraft, characterized in that: The invention comprises a concave airbag (1) and a flat airbag (2). The number of the concave airbag (1) is plural. The middle part of the concave airbag (1) is concave and the two sides are lifted after being inflated. The number of the flat airbag (2) is at least one. The concave airbag (1) is stacked on the flat airbag (2). The concave airbags (1) are stacked up and down. Different concave airbags (1) have different curvatures after being inflated. The curvature of the concave airbag (1) located at the top is greater than that of the concave airbag (1) located at the bottom. The curvature of the top concave airbag (1) after being inflated is adapted to the curvature of the belly of the aircraft. The flat airbag (2) is in the shape of a flat plate after being inflated.
2. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 1, characterized in that: The upper and lower surfaces of the concave airbag (1) and the flat airbag (2) are both brushed cloth layers, and a plurality of brushed yarns (3) matching the brushed cloth layers are arranged between the upper and lower surfaces of each concave airbag (1) and the flat airbag (2). The brushed yarns (3) and the brushed cloth layers on the upper and lower surfaces of the concave airbag (1) and the flat airbag (2) form a whole.
3. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 2, characterized in that: At least one inflation nozzle (4) is provided on the side of each concave airbag (1) and flat airbag (2).
4. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 3, characterized in that: A floor mat is arranged below the flat airbag (2), and the floor mat is laid on the ground.
5. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 4, characterized in that: The longitudinal sections of the floor mat, the concave airbag (1) and the flat airbag (2) are rectangular, the edges of each of the concave airbag (1) and the flat airbag (2) are arc-shaped, and the four corners of the edges of each of the concave airbag (1) and the flat airbag (2) are rounded.
6. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 4, characterized in that: An inflation nozzle (4) is respectively provided on the front side of each concave airbag (1) and flat airbag (2), and the inflation nozzle (4) is fixed to the corresponding concave airbag (1) and flat airbag (2) by means of threaded connection.
7. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 4, characterized in that: The inflation nozzle (4) is provided with a filter screen.
8. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 4, characterized in that: The number of the concave airbags (1) is 5-9.
9. The concave lifting airbag device for rescue of aircraft at the belly of an aircraft according to claim 1, characterized in that: The length of the concave airbag (1) located at the top is not greater than that of the concave airbag (1) located at the bottom.