CN212097828U

CN212097828U - Light wood sandwich board

Info

Publication number: CN212097828U
Application number: CN201922368566.0U
Authority: CN
Inventors: 张旭鹏; 张磊; 陈刚
Original assignee: Jiangsu Lindeman New Material Technology Co ltd
Current assignee: Jiangsu Lindeman New Material Technology Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-12-08
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a balsawood battenboard, including panel, core and adhesive layer, core up end and lower terminal surface are respectively through adhesive layer bonding panel, and the core is the balsawood, designs for the round hole type balsawood core, and this sandwich layer can satisfy the strength requirement, can reduce density again, and the structure is made conveniently, with low costs, can extensively promote. The utility model discloses the structure is made conveniently, with low costs, can extensively promote.

Description

Light wood sandwich board

Technical Field

The utility model relates to a battenboard technical field specifically is a balsawood battenboard.

Background

The sandwich structure is a composite-constructed plate and shell structure, with both surfaces made of very thin sheet material, and a relatively light sandwich layer sandwiched therebetween. The former is called a panel, and is required to have high strength; the latter, called a sandwich, requires a light weight. In the second world war, in order to fully utilize wood resources, a full wood sandwich structure is adopted on British's mosquito bombers. Sandwich structures are commonly used for wings, empennages, fuselages, rocket bodies, arrowheads, speed reducers, nacelles, sound insulation, fire barriers, and the like. Compared with thin skin with thin-wall structure, the sandwich plate has much larger thickness, strong instability resistance, reduced weight, smooth surface and good pneumatic appearance. But the manufacturing process is complex, and the process quality is not easy to be checked, so the application is limited. The sandwich structure surface plate is made of aluminum alloy, stainless steel, titanium alloy and various composite materials. The sandwich material is light wood, foamed plastic, etc., and may be corrugated plate sandwich or honeycomb sandwich (honeycomb structure) of metal material or composite material. The interlayer and the surface plate are generally bonded together by glue, and can also be connected by fusion welding and welding to form a whole. In the overall stress analysis, it is believed that the upper and lower skins only bear the tensile, compressive and shear forces in the skins and are not able to bear the bending moments and torques, while the middle interlayer only bears the shear forces perpendicular to the mid-plane of the interlayer. The only difference between the sandwich structure and the common plate shell structure in stress analysis is that the deflection calculation considers the influence of shearing force besides the deflection generated by bending moment. The distance between the two surface plates of the sandwich structure is larger, so that the bending rigidity of the sandwich structure is much larger than that of a common plate shell structure, and the instability critical stress is obviously improved. The sandwich structure does not need rivets, avoids stress concentration caused by nail holes and improves the fatigue strength. The connection of the sandwich structure and the adjacent structure is complicated, the local contact strength of the sandwich itself is weak, and the concentrated force of the connection needs to be borne, so that the joint design must be properly carried out.

The sandwich structure is a plate shell structure, belongs to a composite structure, originates from bionics, and is filled by an upper surface and a lower surface which are made of two very thin plates and a lighter sandwich layer in the middle. The former is called a panel, and the required strength is relatively high; the latter is called a sandwich and requires a light weight. The structure form is equivalent to an H-Mingming structure, and the structure is formed by bonding an upper high-strength panel, a lower high-strength panel and a middle light core material by using a cementing agent. The sandwich plate has the advantages of high strength, light weight, smooth surface, good pneumatic appearance, high instability resistance and the like, and the sandwich structure has the advantages of sound insulation, heat insulation, shock resistance and the like. The sandwich structure is subjected to bending loads, tensile and compressive stresses being predominantly borne by portions of the face sheets, and shear stresses being predominantly borne by the core material. It is therefore known that, since the panels are subjected to a large part of the forces, the panels should be made of a material selected for its strength and rigidity. The most commonly used panel materials are mainly lead alloy plates, steel plates, laminated plates made of composite materials, glass fiber plates and the like. The selection of the sandwich material requires a material with light weight, and materials such as honeycomb, foam, balsa wood and the like are commonly used. The sandwich structure can be divided into the following structures according to different core materials: the sandwich structure in the forms of foam sandwich structure, honeycomb sandwich structure, balsa wood sandwich structure, paulownia wood sandwich structure and the like is an integral structure combined by different materials, but the sandwich structure is not simply superposed and combined by the materials, but has the novel characteristic of the composite effect peculiar to the sandwich structure compared with other traditional plate structures, and has a plurality of excellent characteristics, and the sandwich structure can be used for manufacturing sandwich plate structures meeting various requirements by reasonably selecting a panel and a core material and selecting a reasonable combination and connection mode, so that the sandwich plate structures can be widely applied to various fields, for example: the aerospace field, the transportation field, the power equipment field, the ships field, the building field and other fields.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a balsawood battenboard to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a balsawood sandwich board comprises a panel, a core material and an adhesive layer, wherein the upper end surface and the lower end surface of the core material are respectively bonded with the panel through the adhesive layer.

Preferably, the core material is balsa wood and is designed into a round hole type balsa wood core.

Preferably, the panel is made of polyester fiber board, steel plate, composite board or glass fiber board.

Preferably, the whole thickness of the light wood sandwich panel is 15mm-20 mm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of convenient structure manufacture, low cost and wide popularization; the sandwich layer can meet the strength requirement and reduce the density, and has the advantages of convenient structure manufacture, low cost and wide popularization.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a top view of the panel of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a balsawood sandwich board comprises a panel 1, a core material 2 and an adhesive layer 3, wherein the upper end surface and the lower end surface of the core material 2 are respectively bonded with the panel 1 through the adhesive layer 3; the whole thickness of the light wood sandwich board is 15mm-20 mm.

The utility model discloses in, core 2 is the balsa wood, designs for the light core of round hole type, and the core is the balsa wood, designs for the light core of round hole type, and this sandwich layer can satisfy the strength requirement, can reduce density again, and the structure is made conveniently, with low costs, can extensively promote.

The utility model discloses in, panel 1 adopts polyester fiber board, steel sheet, composite sheet or glass fiber board.

Firstly, processing balsawood with the thickness of 40 mm into round holes, wherein the diameter of each round hole is 10 mm, the distance between the centers of the round holes is 30 mm, and the distance between the center of the circle closest to the side and the edge of the wood board is 20 mm.

In conclusion, the utility model has the advantages of convenient structure and manufacture, low cost and wide popularization; the sandwich layer can meet the strength requirement and reduce the density, and has the advantages of convenient structure manufacture, low cost and wide popularization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A light wood sandwich board is characterized in that: the panel comprises a panel (1), a core material (2) and an adhesive layer (3), wherein the upper end surface and the lower end surface of the core material (2) are respectively bonded with the panel (1) through the adhesive layer (3).

2. The balsa wood sandwich board of claim 1, wherein: the core material (2) is balsa wood and is designed into a round hole type balsa wood core.

3. The balsa wood sandwich board of claim 1, wherein: the panel (1) is made of polyester fiber boards, steel plates, composite plates or glass fiber boards.

4. The balsa wood sandwich board of claim 1, wherein: the whole thickness of the light wood sandwich board is 15mm-20 mm.