CN1923618A - Double gasbag buffer unit - Google Patents

Abstract

The invention discloses a double-chamber airbag cushioning device, which comprises an airbag body, and the airbag body is divided into independent airbag top chambers and airbag bottom chambers from top to bottom. The top air chamber of the airbag is a closed air chamber, and the bottom air chamber of the airbag is provided with vent holes for the bottom air chamber. The top air chamber of the airbag has the shape of an air chamber with a thin middle edge and thick edges, and the air chamber at the bottom of the airbag is thicker and has a larger volume. The invention is a double-chamber airbag cushioning device with simple structure, easy operation and low cost, which can effectively solve the problems of rebounding, overturning and direct contact of the equipment during the landing process of light precision airdrop equipment.

Description

Double-chamber airbag cushioning device

technical field

The invention mainly relates to the field of airbag buffer equipment, in particular to a double-chamber airbag buffer device that can effectively protect light precision airdrop equipment from landing safely.

Background technique

In the prior art, airbag buffer equipment is often used to effectively protect the safe landing of airdrop equipment. For example, cushioning and protective airbags are often used for the safe landing of light precision equipment such as unmanned reconnaissance aircraft. Prevent rebounding, overturning, and airdrop equipment directly touching the ground. Most of the existing airborne cushioning airbags use a single-chamber airbag device with a single structure. During the buffering process of this type of airbag device, there are always problems that the airdrop equipment directly touches the ground or rebounds or even overturns. Technical difficulties are mutual checks and balances. If a large exhaust is used to prevent a large rebound, it is easy to cause the airdrop device to touch the ground directly; if a small exhaust is used to prevent the airdrop device from touching the ground, it will often reduce the buffering effect and cause a large rebound or even overturn. When adopting the air bag of single air chamber, these two kinds of contradictions are often difficult to coordinate and solve.

Contents of the invention

The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a simple structure, easy operation, low cost, which can effectively solve the rebound, overturn and equipment during the buffer landing process of light precision airdrop equipment. Double-chamber airbag cushioning device for problems such as direct contact with the ground.

In order to solve the above-mentioned technical problems, the solution proposed by the present invention is: a double-chamber airbag cushioning device, which includes an airbag body, which is characterized in that: the airbag body is divided into independent airbag top chambers and airbag top chambers from top to bottom. The bottom air chamber of the airbag and the top air chamber of the airbag are closed air chambers, and the bottom air chamber of the airbag is provided with vent holes for the bottom air chamber.

The thickness L ₁ of the top chamber of the airbag is smaller than the thickness L ₂ of the bottom chamber of the airbag.

The shape of the top air chamber of the airbag is thin in the middle and thick in the edges.

The airbag top air chamber and the air bag bottom air chamber are respectively provided with a top air chamber cloth and a bottom air chamber cloth for adjusting the shape of the air bag body, and air chamber communication holes are opened in the top air chamber cloth and the bottom air chamber cloth.

Compared with the prior art, the present invention has the advantages of:

1. The airbag body of the present invention adopts the dual-chamber design of the top air chamber of the air bag and the bottom air chamber of the air bag, which combines rigidity and softness, and utilizes the joint action of the two air chambers. The volume of the two air chambers, the inflation pressure and the displacement and The exhaust speed can be optimized according to different airdrop equipment and airdrop tasks, which can well meet the buffer protection requirements of different airdrop equipment, especially suitable for the safe landing protection of light precision equipment such as unmanned reconnaissance aircraft;

2. The double-chamber airbag cushioning device of the present invention has simple structure, low cost, and is suitable for large-scale production and use. At the same time, the device occupies a small space before inflating, and is convenient for deflated storage after landing. The non-exhaust sealing feature on the top air chamber of the airbag is to always prevent the airdrop equipment from directly landing on the ground. The top air chamber of the airbag has a shape of an air chamber with a thin middle edge and a thick edge, which can prevent the airdrop equipment from overturning. The base air chamber of the airbag with a thicker air chamber and a larger volume realizes a large exhaust to the outside through the vent hole of the base air chamber during the buffering process and ensures the necessary buffering time, which not only plays an effective buffering role, but also prevents rebound. Therefore, the double-chamber airbag cushioning device of the present invention can effectively solve the key technical problems of the single-chamber cushioning airbag such as large rebound, overturning of airdrop equipment or direct ground contact.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic cross-sectional view at A-A in Fig. 1;

Fig. 3 is a schematic cross-sectional view at B-B in Fig. 1 .

illustration

1. Airbag top air chamber 2. Airbag bottom air chamber

3. Top air chamber pull cloth 4. Bottom air chamber pull cloth

5. Vent hole in the bottom air chamber 6. Connecting hole in the air chamber

7. Airbag body 8. Thickened edge

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, Figure 2 and Figure 3, the double-chamber airbag cushioning device of the present invention includes an airbag body 7, which is made of fiber cloth with a certain strength and good airtightness, without other mechanical Auxiliary parts or filling materials, only use low-cost and environmentally friendly air to effectively protect the airdrop equipment in all directions. According to the needs of actual working conditions, the airbag body 7 can be designed as a circle, a square, an ellipse or other shapes. The airbag body 7 is divided into independent airbag top air chamber 1 and airbag bottom air chamber 2 from top to bottom. The airbag top air chamber 1 is a closed air chamber that does not exhaust externally. The airbag bottom air chamber 2 is provided with a bottom air chamber vent hole. 5. A one-way exhaust valve can be provided at the vent hole 5 of the bottom air chamber, and the number and aperture of the bottom air chamber vent hole 5 can be optimally designed according to different airdrop tasks. The thickness L ₁ of the top chamber 1 of the airbag is smaller than the thickness L ₂ of the bottom chamber 2 of the airbag. In this embodiment, the shape of the top chamber 1 of the airbag is thin in the middle and thick at the edges, and its structural features have the function of preventing overturning. The thinner air chamber of the top air chamber 1 of the airbag, the smaller volume is to prevent obvious rebound, and its closed and non-exhaust sealing characteristics are to prevent the airdrop equipment from directly landing on the ground all the time. The air chamber of the bottom air chamber 2 of the airbag is thicker and has a larger volume. Its structural characteristics can solve the contradiction between large exhaust and short buffering time, and the key technology of large exhaust to prevent rebound and the necessary buffering time can ensure Buffering effect. The top chamber 1 of the airbag and the bottom chamber 2 of the airbag are connected but not connected, and the inflation quality of each can be optimally selected according to different working conditions to meet the actual needs of their respective tasks. The base air chamber 2 of the airbag is exhausted to the outside through the exhaust hole 5 of the base air chamber during the buffering process. In this embodiment, the top air chamber 1 and the bottom air chamber 2 of the airbag are respectively provided with the top air chamber cloth 3 and the bottom air chamber cloth 4 for adjusting the shape of the air bag body 7, the top air chamber cloth 3 and the bottom air chamber cloth The air chamber communication hole 6 is opened in the air chamber 4, and the gas chamber communication hole 6 enables the gas in each air chamber to flow freely. The inflated shapes of the airbag top chamber 1 and the airbag bottom chamber 2 are respectively controlled by the top chamber cloth 3 and the airbag chamber cloth 4, and the volumes of the airbag top chamber 1 and the airbag bottom chamber 2 are optimized according to actual working conditions design. During the landing buffer process of the airdrop equipment, since the airbag base air chamber 2 is exhausted externally through the one-way exhaust valve at the exhaust hole 5 of the base air chamber, at the moment of landing, the one-way exhaust valve is closed due to the increase in internal air pressure caused by the compression of the airbag. When the airbag is opened, the airbag is exhausted to the outside, which can quickly release the internal energy accumulated instantaneously due to the rapid compression of the gas, which can reduce the rigidity of the airbag, thereby enhancing the cushioning effect, and the optimized design of the exhaust volume and exhaust speed makes The bottom air chamber 2 of the airbag has the effect of preventing a large rebound. At this time, the closed airbag top chamber 1 acts as a joint buffer. The structure designed to prevent the airdrop equipment from overturning and its optimized thickness of the airbag top chamber 1 prevent the airdrop equipment from directly touching the ground. .

Claims (5)

1, a kind of double gasbag buffer unit, it comprises pneumatophore (7), it is characterized in that: described pneumatophore (7) is divided into separately independently air bag top air chamber (1) and air bag spirit chamber (2) from top to bottom, described air bag top air chamber (1) is a closed air chamber, offers spirit chamber deflation hole (5) on the air bag spirit chamber (2).

2, double gasbag buffer unit according to claim 1 is characterized in that: the thickness L of air bag top air chamber (1) ₁Thickness L less than air bag spirit chamber (2) ₂

3, double gasbag buffer unit according to claim 1 and 2 is characterized in that: described air bag top air chamber (1) be shaped as intermediate thin, the edge is thick.

4, double gasbag buffer unit according to claim 1 and 2, it is characterized in that: be respectively equipped with the top air chamber granny rag (3) and the spirit chamber granny rag (4) that are used for adjusting pneumatophore (7) shape on described air bag top air chamber (1) and the air bag spirit chamber (2), offer air chamber intercommunicating pore (6) in top air chamber granny rag (3) and the spirit chamber granny rag (4).

5, double gasbag buffer unit according to claim 3, it is characterized in that: be respectively equipped with the top air chamber granny rag (3) and the spirit chamber granny rag (4) that are used for adjusting pneumatophore (7) shape on described air bag top air chamber (1) and the air bag spirit chamber (2), offer air chamber intercommunicating pore (6) in top air chamber granny rag (3) and the spirit chamber granny rag (4).

Images