A cushion airbag

Abstract

This invention relates to a buffer airbag, comprising an outer bladder and at least two inner bladders; one side wall of the outer bladder is a bearing surface that contacts the impacting object; at least two inner bladders are embedded within the outer bladder, and the at least two inner bladders are fixedly connected to the inner wall of the outer bladder away from the bearing surface. The buffer airbag of this invention is positioned between the impacting object and a bridge pier to buffer and block the impact force exerted on the bridge pier by the impacting object. By embedding the inner bladders within the outer bladder and defining their positions within the outer bladder, the outer bladder provides initial buffering of the impacting object, while the inner bladders provide secondary buffering: when the impacting object contacts the bearing surface of the outer bladder, compressing the outer bladder, the outer bladder provides initial buffering; when the outer bladder ruptures, deforms to a certain extent, or deflates, the impacting object directly or indirectly contacts the at least two inner bladders. The at least two inner bladders are smaller in volume than the outer bladder, allowing for more effective contact with the surface of the impacting object, thus providing secondary buffering.

Description

Technical Field

[0001] This invention belongs to the field of bridge protection technology, and specifically relates to a buffer airbag. Background Technology

[0002] Water transport plays a vital role in national economic and social development. However, with its rapid development, collisions between ships and bridges are becoming increasingly frequent. These accidents range from minor damage to vessels to severe damage to bridge piers, disrupting the normal use of the bridge.

[0003] Currently, most methods involve installing airbags on bridges to cushion ships.

[0004] However, existing airbag structures are simple, and given the large kinetic energy of ships, the cushioning effect is limited. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a buffer airbag that provides an initial buffer function for impacting objects through the outer bladder and a secondary buffer function through the inner bladder, thereby effectively reducing the damage to impacting objects and bridge piers.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A cushioning airbag includes an outer bladder and at least two inner bladders; one side wall of the outer bladder is a bearing surface that contacts an impacting object; at least two of the inner bladders are embedded in the outer bladder, and at least two of the inner bladders are fixedly connected to the inner wall of the outer bladder away from the bearing surface.

[0008] In the above scheme, at least two of the inner bladders form a V-shaped or arc-shaped buffer surface on the side near the bearing surface.

[0009] In the above scheme, the cross-sections of both the outer capsule and the inner capsule are elliptical, and at least two of the inner capsules are located on the arc-shaped inner wall pointed to by the minor axis of the outer capsule.

[0010] In the above scheme, at least two of the inner capsules are arranged sequentially along the route from the long axis of the outer capsule to the arcuate inner wall.

[0011] The above solution also includes a counterweight component, which is built into the outer bladder to adjust the center of gravity of the inner bladder.

[0012] In the above scheme, the counterweight component and the inner bladder are sequentially arranged in the outer bladder along the impact direction of the impactor, so that when floating on the water surface, the centers of at least two of the inner bladders are located on the same horizontal plane as the center of the outer bladder.

[0013] In the above scheme, the counterweight assembly includes a counterweight block and several elastic ropes. The counterweight block is built into the outer bladder, and one end of each of the several elastic ropes is fixedly connected to the counterweight block, while the other end of each elastic rope is fixedly connected to the inner wall of the outer bladder. When the outer bladder is inflated, the elastic ropes stretch, and when the outer bladder is deflated, the elastic ropes contract.

[0014] The above solution also includes an inflation assembly, the inflation end of which is connected to the outer bladder and at least two inner bladders for inflating the outer bladder and the inner bladders.

[0015] In the above scheme, the inflation assembly includes an inflation connector and at least two hoses. One end of the inflation connector is connected to an external air source, and the other end of the inflation connector extends into the outer bladder. At least two hoses are built into the outer bladder, one end of each of the at least two hoses is connected to the inflation connector, and the other end of each of the at least two hoses is connected to at least two inner bladders respectively.

[0016] In the above scheme, both the outer capsule and the inner capsule are made of UHMWPE composite material.

[0017] The beneficial effects of this invention are as follows:

[0018] 1. The present invention provides a buffer airbag positioned between the impactor and the bridge pier to buffer and block the impact force exerted on the bridge pier. An inner airbag is placed inside an outer airbag. By defining the position of the inner airbag within the outer airbag, the outer airbag provides initial buffering of the impactor, while the inner airbag provides secondary buffering. First, the impactor contacts the bearing surface of the outer airbag, compressing it and providing initial buffering. When the outer airbag ruptures, deforms to a certain extent, or deflates, the impactor directly or indirectly contacts at least two inner airbags. These inner airbags are smaller in volume than the outer airbag, allowing for more effective contact with the surface of the impactor, thus providing secondary buffering and effectively reducing the damage to both the impactor and the bridge pier.

[0019] 2. The inner bladder is designed with multiple inner bladders. The side of the multiple inner bladders closest to the bearing surface forms a V-shaped or arc-shaped buffer surface. On the one hand, it can increase the contact area with the bow of the ship, and on the other hand, it can better adapt to the shape of the bow of the ship. This allows the inner bladder to fit perfectly with the bow of the ship directly or indirectly, thereby reducing the pressure on the inner bladder by increasing the contact area.

[0020] 3. A counterweight component is designed and built into the outer bladder to adjust the center of gravity of the inner bladder, so that the inner bladder faces the impacting object. The counterweight component and the inner bladder are arranged sequentially in the outer bladder along the impact direction of the impacting object, so that when floating on the water surface, the centers of the two inner bladders and the center of the outer bladder are on the same horizontal plane. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0022] Figure 1 This is a schematic diagram of the overall internal structure of the buffer airbag provided in an embodiment of the present invention;

[0023] Figure 2 The cushioning airbag provided in the embodiments of the present invention Figure 1 Sectional view of plane AA;

[0024] Figure 3 This is an external schematic diagram of the overall structure of the buffer airbag provided in an embodiment of the present invention.

[0025] In the diagram: 100, outer bladder; 110, webbing loop; 200, inner bladder; 210, buffer surface; 300, counterweight assembly; 310, counterweight block; 320, elastic rope; 400, inflation assembly; 410, inflation connector; 420, hose; 500, pressure relief valve. Detailed Implementation

[0026] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the present invention provides a buffer airbag, including an outer bladder 100 and at least two inner bladders 200. Both the outer bladder 100 and the inner bladders 200 are inflatable airbag structures. One side wall of the outer bladder 100 is a bearing surface that contacts the impacting object. At least two inner bladders 200 are built into the outer bladder 100 and are fixedly connected to the inner wall of the outer bladder 100 away from the bearing surface.

[0028] In practice, the buffer airbag is placed between the impactor and the bridge pier to buffer and block the impact force F applied to the bridge pier by the impactor. First, the impactor contacts the bearing surface of the outer bladder 100 and compresses the outer bladder 100. The outer bladder 100 provides the initial buffer function for the impactor. When the outer bladder 100 ruptures, is compressed and deformed to a certain extent, or is deflated, the impactor comes into direct or indirect contact with at least two inner bladders 200. The at least two inner bladders 200 are smaller in volume than the outer bladder 100 and can more effectively contact the surface of the impactor, thereby providing a secondary buffer function for the impactor and effectively reducing the damage to the impactor and the bridge pier.

[0029] In this embodiment, the inner capsule 200 is built into the outer capsule 100. By limiting the position of the inner capsule 200 inside the outer capsule 100, the outer capsule 100 can provide initial cushioning for the impactor, and the inner capsule 200 can provide secondary cushioning for the impactor.

[0030] When the impacting object is a vessel, typically the bow of the vessel strikes the bridge pier. To ensure that the inner bladder 200 perfectly conforms directly or indirectly to the bow of the vessel, the contact area is increased to reduce the pressure borne by the inner bladder 200. In one embodiment, at least two inner bladders 200 form a V-shaped buffer surface 210 on the side near the bearing surface, which can mate with the bow of the vessel. Of course, in other embodiments, at least two inner bladders 200 may also form an arc-shaped surface or other shapes on the side near the bearing surface, preferably maximizing the contact area with the impacting object.

[0031] In one embodiment, both the outer capsule 100 and the inner capsule 200 have elliptical cross-sections, at least two inner capsules 200 are disposed on the arcuate inner wall pointed to by the minor axis of the outer capsule 100, and multiple inner capsules 200 are arranged sequentially along the route of the projection of the major axis of the outer capsule 100 onto the arcuate inner wall.

[0032] It should be noted that when the outer bladder 100 is squeezed and ruptured, the inner bladder 200 comes into direct contact with the ship. When the outer bladder 100 is squeezed and deformed to a certain extent or when the outer bladder 100 is deflated, the inner bladder 200 comes into indirect contact with the ship. Regardless of the contact method between the inner bladder 200 and the ship, the intent of the present invention can be achieved.

[0033] During implementation, the airbag needs to float on the water surface. Due to the positioning of the inner bladder 200, the entire airbag is off-center (usually the inner bladder 200 is below the outer bladder 100), preventing it from effectively facing the impacting object. To solve this problem, the airbag can be fixed to the bridge pier. Alternatively, the center of gravity of the airbag can be adjusted to ensure that the inner bladder 200 faces the impacting object.

[0034] For example, this embodiment also includes a counterweight component 300, which is built into the outer bladder 100 to adjust the center of gravity of the inner bladder 200. The counterweight component 300 and the inner bladder 200 are arranged sequentially in the outer bladder 100 along the impact direction of the impacting object, so that when floating on the water surface, the centers of the two inner bladders 200 and the center of the outer bladder 100 are located on the same horizontal plane.

[0035] like Figure 2 As shown, in one embodiment, the counterweight assembly 300 includes a counterweight block 310 and a plurality of elastic ropes 320. The counterweight block 310 is built into the outer bladder 100. One end of each of the plurality of elastic ropes 320 is fixedly connected to the counterweight block 310, and the other end of each of the plurality of elastic ropes 320 is fixedly connected to the inner wall of the outer bladder 100. When the outer bladder 100 is inflated, the elastic ropes 320 stretch; when the outer bladder 100 is deflated, the elastic ropes 320 contract.

[0036] To facilitate the recovery of the cushioning airbag, in one embodiment, an inflation assembly 400 is also included. The inflation end of the inflation assembly 400 is connected to the outer bladder 100 and at least two inner bladders 200 for inflating the outer bladder 100 and the inner bladders 200.

[0037] The inflation assembly 400 includes an inflation connector 410 and at least two hoses 420. One end of the inflation connector 410 is connected to an external air source, and the other end of the inflation connector 410 extends into the outer bladder 100. The at least two hoses 420 are both built into the outer bladder 100. One end of the at least two hoses 420 is connected to the inflation connector 410, and the other end of the at least two hoses 420 is connected to at least two inner bladders 200 respectively.

[0038] In order to deflate the outer bladder 100 and the inner bladder 200, in one embodiment, a pressure relief valve 500 is also included, which is connected to the outer bladder 100 and the inner bladder 200 for deflating the outer bladder 100 and the inner bladder 200.

[0039] In one embodiment, both the outer bladder 100 and the inner bladder 200 are made of UHMWPE composite material. UHMWPE composite material has both extremely high toughness and extremely high impact strength. It exhibits excellent mechanical properties under high pressure, provides good cushioning effect for collision protection, and has excellent sealing performance, making it an excellent airbag material.

[0040] like Figure 3 As shown, to facilitate the handling of uninflated airbags, multiple webbing loops 110 can be fitted around the outer ring of the airbag. The elasticity of the webbing loops 110 allows the airbag to shrink to a certain size after deflation for easy storage.

[0041] The buffer airbag of the present invention is disposed between the impactor and the bridge pier to buffer and block the impact force applied to the bridge pier by the impactor. First, the impactor contacts the bearing surface of the outer bladder 100 and compresses the outer bladder 100. The outer bladder 100 provides an initial buffering function for the impactor. When the outer bladder 100 ruptures, is compressed and deformed to a certain extent, or is deflated, the impactor comes into direct or indirect contact with at least two inner bladders 200. The at least two inner bladders 200 are smaller in volume than the outer bladder 100 and can more effectively contact the surface of the impactor, thereby providing a secondary buffering function for the impactor and effectively reducing the damage to the impactor and the bridge pier.

[0042] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A cushion airbag characterized by, The buffer airbag comprises an outer bag and at least two inner bags. One side wall of the outer bag is a load-bearing surface in contact with the impact object. The at least two inner bags are arranged in the outer bag, and the at least two inner bags are fixedly connected to the inner wall of the outer bag away from the load-bearing surface. One side of the at least two inner bags close to the load-bearing surface forms a V-shaped or arc-shaped buffer surface, which can be matched with the shape of the front end of the ship, so that the inner bag directly or indirectly adheres to the front end of the ship. The cross sections of the outer bag and the inner bag are both elliptical, and the at least two inner bags are arranged on the arc-shaped inner wall of the outer bag in the direction of the short axis of the outer bag. The projection of the at least two inner bags to the arc-shaped inner wall along the long axis of the outer bag is sequentially arranged. The buffer airbag further comprises a counterweight assembly arranged in the outer bag, which is used to adjust the center of gravity of the inner bag. The counterweight assembly and the inner bag are sequentially arranged in the outer bag in the direction of the impact of the impact object, so that the centers of the at least two inner bags and the center of the outer bag are located on the same horizontal plane when floating on the water surface.

2. The cushioning airbag of claim 1, wherein, The counterweight assembly comprises a counterweight block and a plurality of elastic ropes. The counterweight block is arranged in the outer bag. One end of each of the plurality of elastic ropes is fixedly connected to the counterweight block, and the other end of each of the plurality of elastic ropes is fixedly connected to the inner wall of the outer bag. When the outer bag is inflated, the elastic ropes are stretched, and when the outer bag is deflated, the elastic ropes are contracted.

3. The cushioning airbag of claim 1, wherein, The buffer airbag further comprises an inflation assembly. The inflation end of the inflation assembly is in communication with the outer bag and the at least two inner bags, and is used to inflate the outer bag and the inner bags.

4. The cushioning airbag of claim 3, wherein, The inflation assembly comprises an inflation connector and at least two hoses. One end of the inflation connector is connected to an air source, and the other end of the inflation connector extends into the outer bag. The at least two hoses are arranged in the outer bag. One end of each of the at least two hoses is in communication with the inflation connector, and the other end of each of the at least two hoses is in one-to-one correspondence with the at least two inner bags.

5. The cushioning airbag of claim 1, wherein, The outer bag and the inner bag are both made of UHMWPE composite material.

Images