CN211526059U - Force bearing structure - Google Patents

Abstract

The application belongs to aircraft structural design field, in particular to load structure, include: at least two flexible inner layers which are arranged in an up-down stacked manner; the outer layer flexible sealing coating layer is internally coated with the at least two flexible inner layers in a first vacuum inner cavity, and an external vacuum-pumping valve is arranged at a first opening end of the outer layer flexible sealing coating layer; wherein each layer of flexible inner layer comprises: the inner layer flexible sealing coating layer is provided with a light filling material in a second vacuum inner cavity, and an internal vacuum pumping valve is arranged at a second opening end of the inner layer flexible sealing coating layer. The application discloses bearing structure can solve the technical defect that traditional bearing structure weight is big, with high costs for bearing structure's weight is lighter, the cost is lower, and possesses certain bending resistance, anti striking ability.

Description

a load bearing structure

technical field

The present application belongs to the field of aircraft structure design, and particularly relates to a load-bearing structure.

Background technique

At present, the anti-bending and anti-collision structures on airplanes or automobiles need to be made of high-modulus elastic materials such as metal or composite materials, but the process is complicated, the structure is heavy, and the cost is high.

Utility model content

In order to solve at least one of the above technical problems, the present application provides a load-bearing structure.

The application discloses a load-bearing structure, comprising:

At least two flexible inner layers arranged one above the other;

The outer flexible sealing cladding layer has a first vacuum inner cavity formed inside, the first vacuum inner cavity is clad with the at least two flexible inner layers, and the outer flexible sealing cladding layer has the same characteristics as the a first open end that communicates with the vacuum inner cavity, and an external vacuum valve is arranged at the first open end; wherein

Each of the flexible inner layers includes:

The inner flexible sealing cladding layer is internally formed with a second vacuum inner cavity, the second vacuum inner cavity is clad with a light-weight filling material, and the inner flexible sealing cladding layer has the same inner diameter as the second vacuum inner cavity. A second open end that communicates with the cavity, and an internal vacuum valve is arranged at the second open end.

According to at least one embodiment of the present application, the lightweight filling material is selected from one of lightweight foam, honeycomb, and inflatable pellets.

According to at least one embodiment of the present application, the lightweight filler material is discrete particles.

According to at least one embodiment of the present application, each layer of the flexible inner layer further comprises:

The isolation net is arranged in the second vacuum inner cavity, and is used for isolating the discrete particles located on the left and right sides thereof.

According to at least one embodiment of the present application, each layer of the flexible inner layer further comprises:

A fiber-reinforced mesh is provided on the inner surface of the inner flexible sealing coating.

According to at least one embodiment of the present application, the at least two flexible inner layers arranged one above the other are connected by means of bonding.

This application has at least the following beneficial technical effects:

The load-bearing structure of the present application can solve the technical defects of heavy weight and high cost of the traditional load-bearing structure, so that the load-bearing structure is lighter in weight and lower in cost, and has certain bending and impact resistance capabilities.

Description of drawings

Fig. 1 is the structural sectional view of the bearing structure of the present application;

FIG. 2 is a schematic diagram of the inner layer structure of the inner layer flexible sealing cladding layer of the load-bearing structure of the present application.

Detailed ways

In order to make the implementation purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements or elements having the same or similar functions. The described embodiments are some, but not all, of the embodiments of the present application. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to be used to explain the present application, but should not be construed as a limitation to the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application. The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

The load-bearing structure of the present application will be described in further detail below with reference to Fig. 1 and Fig. 2 .

The present application discloses a load-bearing structure, which may include an outer flexible sealing cladding layer 5 and a flexible inner layer 11 clad in the inner layer.

The flexible inner layer 11 includes at least two layers, and the specific number can be appropriately selected according to needs; as shown in FIG. 1 , in this embodiment, it is preferably three layers; the three layers of flexible inner layers 11 are stacked in sequence from top to bottom, And further preferably, the flexible inner layers 11 arranged on top of each other are connected by bonding.

A first vacuum inner cavity is formed inside the outer flexible sealing cladding layer 5, and the first vacuum inner cavity is clad with at least two (3 layers in this embodiment) flexible inner layers 11 described above; in addition, the outer flexible sealing The cladding layer 5 has a first open end that communicates with the vacuum inner cavity, and an external vacuum valve 6 is provided at the first open end, so as to evacuate the interior of the outer flexible sealing cladding layer 5 to form a first vacuum inner cavity .

Further, each of the above-mentioned flexible inner layers 11 may further comprise an inner flexible sealing coating layer 1 , a lightweight filling material 2 and an internal vacuum valve 3 .

Specifically, a second vacuum inner cavity is formed inside the inner flexible sealing coating layer 1, and the second vacuum inner cavity is coated with a lightweight filling material 2; in addition, the inner flexible sealing coating layer 1 has the same The second open end that communicates with the inner cavity is provided with an internal vacuum valve 3 at the second open end, which is also convenient for vacuuming to form a second vacuum inner cavity. It should be further noted that, the lightweight filling material 2 can be laid in various suitable shapes, such as a straight plate shape, a curved plate shape, and the like, inside the inner flexible sealing cladding layer 1 as required.

Likewise, the lightweight filling material 2 can be appropriately selected according to the needs, for example, it can be a lightweight foam, honeycomb, air-filled pellets, and also discrete particles.

Wherein, when the lightweight filling material 2 is selected as discrete particles, each of the above-mentioned flexible inner layers 11 may also include an isolation net 4; discrete particles.

Further, in the load-bearing structure of the present application, each flexible inner layer 11 may further include a fiber-reinforced mesh 7 , which is disposed on the inner surface of the inner flexible sealing coating layer 1 .

Further, the installation steps of the load-bearing structure of the present application are as follows:

First, the inner flexible sealing coating layer 1 and the lightweight filling material 2 are prefabricated into a certain structural shape, and the lightweight filling material 2 is placed inside the inner flexible sealing coating layer 1 through the second open end, and passes through the inner flexible sealing coating layer 1. The vacuum valve 3 evacuates the inner flexible sealing coating 1, and under the action of atmospheric pressure, the inner flexible sealing coating 1 and the lightweight filling material 2 are tightly attached together, so that the inner flexible sealing coating The layer 1 and the lightweight filling material 2 together form a bending-resistant load-bearing structure with a certain rigidity. At this time, the vacuuming is stopped, and the internal vacuuming valve 3 is closed. Then a plurality of evacuated inner flexible cladding layers 1 are connected, and placed in the outer flexible sealing cladding layer 5 through the first open end, and then the outer vacuum valve 6 is evacuated, and the outer layer is flexibly sealed. When the cladding layer 5 is in close contact with the topmost and bottommost inner flexible sealing cladding layers 1 , the vacuuming is stopped and the external vacuuming valve 6 is closed.

To sum up, the load-bearing structure of the present application can solve the technical defects of heavy weight and high cost of the traditional load-bearing structure, so that the load-bearing structure is lighter in weight and lower in cost, and has certain anti-bending and anti-collision capabilities. .

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, All should be covered within the scope of protection of this application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (6)

1. A force-bearing structure, comprising:

at least two layers of flexible inner layers (11) which are arranged in an up-down stacked manner;

the outer-layer flexible sealing coating layer (5) is internally provided with a first vacuum inner cavity, the at least two flexible inner layers (11) are coated in the first vacuum inner cavity, the outer-layer flexible sealing coating layer (5) is provided with a first opening end communicated with the vacuum inner cavity, and an external vacuum pumping valve (6) is arranged at the first opening end; wherein

Each of the flexible inner layers (11) comprises:

inner flexible sealed coating (1), inside is formed with second vacuum inner chamber, the cladding has light filling material (2) in the second vacuum inner chamber, inner flexible sealed coating (1) have with the second open end of second vacuum inner chamber intercommunication, second open end department is provided with inside evacuation valve (3).

2. The force-bearing structure according to claim 1, wherein the lightweight filling material (2) is selected from one of lightweight foam, honeycomb, and gas-filled beads.

3. The force-bearing structure according to claim 1, characterized in that the lightweight filling material (2) consists of discrete particles.

4. The force-bearing structure according to claim 3, wherein each of the flexible inner layers (11) further comprises:

and the isolation net (4) is arranged in the second vacuum inner cavity and is used for isolating the discrete particles positioned on the left side and the right side of the second vacuum inner cavity.

5. The force-bearing structure according to claim 1, wherein each of the flexible inner layers (11) further comprises:

and the fiber reinforcing net (7) is arranged on the inner surface of the inner layer flexible sealing coating layer (1).

6. The force-bearing structure of claim 1, wherein the at least two flexible inner layers (11) which are stacked up and down are connected by bonding.

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