Composite material double-sandwich board

Abstract

The utility model relates to a composite material double-sandwich board which comprises a first composite layer board, a first foaming layer, a second composite layer board, a second foaming layer and a third composite layer board, an end panel is arranged at the end part of the composite material double-sandwich panel; a reinforcing angle section is fixedly arranged at the position of an included angle formed by the end face plate and the first composite layer plate, and an L-shaped reinforcing angle section is fixedly arranged below the position of an included angle formed by the end face plate and the third composite layer plate. According to the composite material double-sandwich board, the two foaming core layers are clamped by the three composite layer boards, so that the composite material double-sandwich board has a good heat preservation effect, the in-plane rigidity can be ensured, and meanwhile, the composite layer boards on the surface can be prevented from being wrinkled, unstable and damaged under internal pressure and overall stress. The end face plates can convert in-plane shear transmitted by the foam core into concentrated loads, and the double-sandwich plate can be connected with a peripheral structure through the end reinforcing angle materials.

Description

Technical Field

[0001] The utility model relates to a composite material double sandwich panel, belonging to the technical field of sandwich panels. Background Art

[0002] The transportation of live fish has always been one of the problems in the aquaculture industry, because live fish often die during transportation, causing economic losses. In the aquatic transport box used in the transportation of live fish, foam sandwich panels are the most suitable form considering weight and heat preservation. However, the strength of sandwich panels with a foam core layer is not enough to cope with the pressure, resulting in wrinkling and instability. How to prepare a composite sandwich panel that can have a heat preservation effect and maintain sufficient in-plane stiffness has become a problem to be solved. Utility Model Content

[0003] The utility model aims to provide a composite material double sandwich panel which adopts a three-layer two-core structure so that the sandwich panel can both keep warm and ensure in-plane rigidity.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved as follows:

[0005] The utility model relates to a composite material double sandwich panel, comprising a first composite layer, a first foaming layer, a second composite layer, a second foaming layer and a third composite layer; an end panel is arranged at the end of the composite material double sandwich panel; a reinforcing angle material is fixedly arranged at the angle formed by the end panel and the first composite layer, and an L-shaped reinforcing angle material is fixedly arranged at the angle formed by the end panel and the third composite layer.

[0006] On the basis of the above scheme and as a preferred scheme of the above scheme: the first foaming layer and the second foaming layer are PVC foaming material, polyurethane foaming material, EPP foaming material, EPS foaming material or polystyrene foaming material.

[0007] On the basis of the above solution and as a preferred solution of the above solution: the first composite layer, the second composite layer and the third composite layer are glass fiber reinforced composite materials or carbon fiber reinforced composite materials.

[0008] On the basis of the above solution and as a preferred solution of the above solution: two reinforcing angle bars are arranged inside the first foaming layer; and two reinforcing angle bars are arranged inside the second foaming layer.

[0009] On the basis of the above scheme and as a preferred scheme of the above scheme: the two reinforcing angle bars in the first foaming layer are arranged back to back; the two reinforcing angle bars in the second foaming layer are arranged back to back.

[0010] On the basis of the above scheme and as a preferred scheme of the above scheme: one side edge of the two reinforcing angle bars in the first foaming layer is connected to the first composite layer board, and the end of the other side edge is in contact with the second composite layer board; one side edge of the two reinforcing angle bars in the second foaming layer is connected to the third composite layer board, and the end of the other side edge is in contact with the second composite layer board.

[0011] The beneficial effects of the utility model are as follows: the composite material double sandwich panel involved in the utility model adopts three layers of composite layer boards sandwiched with two layers of foam core layers, has good thermal insulation effect, and can also ensure the in-plane stiffness, and can avoid the wrinkling and instability damage of the surface composite layer boards under internal pressure and overall stress. The end panel can convert the in-plane shear transmitted by the foam core into concentrated load, and the double sandwich panel can be connected to the surrounding structure through the end reinforcement angle material. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic structural diagram of a composite material double sandwich panel involved in Example 1;

[0013] Figure 2 It is a schematic structural diagram of a composite material double sandwich panel involved in the second embodiment.

[0014] The markings in the figure are as follows: 1-first composite layer; 2-first foaming layer; 3-second composite layer; 4-second foaming layer; 5-third composite layer; 6-end panel; 7-reinforced corner panel. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] Embodiment 1

[0017] Combination Figure 1 , this embodiment is described in detail. A composite double sandwich panel involved in this embodiment comprises a first composite layer 1, a first foaming layer 2, a second composite layer 3, a second foaming layer 4 and a third composite layer 5; an end panel 6 is provided at the end of the composite double sandwich panel; a reinforcing angle bar 7 is fixedly provided at the angle formed by the end panel 6 and the first composite layer 1, and an L-shaped reinforcing angle bar 7 is fixedly provided at the angle formed by the end panel 6 and the third composite layer 5.

[0018] The double sandwich panel with three layers and two cores can increase the thermal insulation effect, ensure the in-plane rigidity, and avoid the wrinkling and instability of the double sandwich panel under internal pressure and overall stress. The end panels 6 arranged at the four ends of the double sandwich panel can convert the in-plane shear of the first foam layer 2 and the second foam layer 45 into concentrated loads. The end panels 6 are made of metal, stainless steel or aluminum alloy, and in this embodiment, aluminum alloy is selected.

[0019] Furthermore, one of the functions of the reinforcing angle bar 7 is to strengthen the strength of the double sandwich panel, and another function is to connect with other structural members. The reinforcing angle bar 7 is made of metal material, stainless steel or aluminum alloy, and in this embodiment, aluminum alloy is selected.

[0020] Furthermore, the first foaming layer 2 and the second foaming layer 4 are made of PVC foaming material, polyurethane foaming material, EPP foaming material, EPS foaming material or polystyrene foaming material. In this embodiment, PVC foaming material is selected.

[0021] Furthermore, the first composite layer 1, the second composite layer 3 and the third composite layer 5 are glass fiber reinforced composite materials or carbon fiber reinforced composite materials, or other composite materials. In this embodiment, carbon fiber reinforced composite materials are selected.

[0022] Embodiment 2

[0023] Combination Figure 2 , this embodiment is described in detail. The composite double sandwich panel involved in this embodiment is different from the first embodiment in that: two reinforcing angle bars 7 are arranged inside the first foaming layer 2; and two reinforcing angle bars 7 are arranged inside the second foaming layer 4. The reinforcing angle bars 7 on the same side of the first foaming layer 2 and the second foaming layer 4 are located at the same position.

[0024] Furthermore, the two reinforcing angle bars 7 in the first foaming layer 2 are arranged in opposite directions; the two reinforcing angle bars 7 in the second foaming layer 4 are arranged in opposite directions. One side of the two reinforcing angle bars 7 in the first foaming layer 2 is connected to the first composite layer 1, and the end of the other side is in contact with the second composite layer 3; one side of the two reinforcing angle bars 7 in the second foaming layer 4 is connected to the third composite layer 5, and the end of the other side is in contact with the second composite layer 3.

[0025] That is, the four reinforcing angle bars 7 in the first foaming layer 2 and the second foaming layer 4 form an I-shaped structure as a whole, which can increase the strength of the double sandwich panel and can be connected to other double sandwich panels through the four reinforcing angle bars 7.

[0026] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A composite double sandwich panel, characterized in that: The composite double sandwich panel comprises a first composite layer (1), a first foaming layer (2), a second composite layer (3), a second foaming layer (4) and a third composite layer (5); an end panel (6) is arranged at the end of the composite double sandwich panel; a reinforcing angle bar (7) is fixedly arranged at the angle formed by the end panel (6) and the first composite layer (1), and an L-shaped reinforcing angle bar (7) is fixedly arranged below the angle formed by the end panel (6) and the third composite layer (5).

2. A composite double sandwich panel according to claim 1, characterized in that: The first foaming layer (2) and the second foaming layer (4) are made of PVC foaming material, polyurethane foaming material, EPP foaming material, EPS foaming material or polystyrene foaming material.

3. A composite double sandwich panel according to claim 1, characterized in that: The first composite layer (1), the second composite layer (3) and the third composite layer (5) are glass fiber reinforced composite materials or carbon fiber reinforced composite materials.

4. A composite double sandwich panel according to claim 1, characterized in that: Two reinforcing angle bars (7) are arranged inside the first foaming layer (2); and two reinforcing angle bars (7) are arranged inside the second foaming layer (4).

5. A composite material double sandwich panel according to claim 4, characterized in that: The two reinforcing angle bars (7) in the first foaming layer (2) are arranged opposite to each other; and the two reinforcing angle bars (7) in the second foaming layer (4) are arranged opposite to each other.

6. A composite material double sandwich panel according to claim 5, characterized in that: One side edge of the two reinforcing angle bars (7) in the first foaming layer (2) is connected to the first composite layer (1), and the end of the other side edge is in contact with the second composite layer (3); one side edge of the two reinforcing angle bars (7) in the second foaming layer (4) is connected to the third composite layer (5), and the end of the other side edge is in contact with the second composite layer (3).

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