CN214983822U

CN214983822U - Wood-based double-layer dot matrix sandwich structure

Info

Publication number: CN214983822U
Application number: CN202120764627.XU
Authority: CN
Inventors: 王立峰; 胡英成; 李帅; 张兴成
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2021-04-12
Filing date: 2021-04-12
Publication date: 2021-12-03
Anticipated expiration: 2031-04-12

Abstract

The utility model discloses a double-deck dot matrix sandwich structure of wooden base belongs to wooden engineering material design field. The utility model discloses a place an intermediate lamella in the middle of ordinary dot matrix sandwich structure's sandwich layer, form a double-deck sandwich structure, the intermediate lamella has shortened the distance between the upper and lower panel, can restrain the deformation that the core takes place when accepting the concora crush, has increased the compressive property of structure. The wood-based double-layer lattice sandwich structure comprises an upper panel, a middle plate, a lower panel and a lattice sandwich layer, wherein the lattice sandwich layer can be designed into different topological configurations, the upper panel, the middle plate and the lower panel are made of birch plywood, the lattice sandwich layer is made of birch round bar tenons, and the upper panel, the middle plate, the lower panel and the lattice sandwich layer are connected through an inserting-gluing method. The utility model discloses from wooden engineering material design angle, come in being applied to wooden sandwich structure's design with lattice structure, prepare out wooden basic dot matrix sandwich structure of low carbon, environmental protection, high strength, have important research value and application prospect.

Description

Wood-based double-layer dot matrix sandwich structure

Technical Field

The utility model belongs to wooden engineering material design field, more specifically say, relate to a double-deck dot matrix sandwich structure of wooden base.

Background

The lattice sandwich structure consists of upper and lower surface plates and panel plates with rods arranged periodically, and compared with other light material, the lattice sandwich structure has the advantages of high specific strength and specific rigidity, large porosity of the core layer, etc. and can realize the integrated design of material, structure and function. The wood is used as a low-carbon, environment-friendly and renewable biomass material and is widely applied to the fields of buildings and structures all the time. From the design angle of novel wood engineering materials, the dot matrix sandwich structure is applied to the design of a wood sandwich structure to prepare a low-carbon, environment-friendly and high-strength wood base dot matrix sandwich structure, and has important research value and application prospect.

SUMMERY OF THE UTILITY MODEL

When the relative density of the core layer of the lattice sandwich structure is low, the middle position of the core is easy to generate buckling failure. To this kind of condition, the utility model designs a novel lattice structure places a intermediate lamella promptly in the middle of ordinary lattice sandwich structure's sandwich layer, has formed a double-deck sandwich structure, and the intermediate lamella has shortened the distance between the upper and lower panel, can restrain the deformation that the core takes place when accepting the concora crush, has increased the compressive property of structure.

A wood-based double-layer lattice sandwich structure comprises an upper panel (1), a middle plate (2), a lower panel (3) and a lattice sandwich layer (4), wherein the upper panel (1), the middle plate (2), the lower panel (3) and the lattice sandwich layer (4) are connected through an inserting-gluing method, the lattice sandwich layer (4) can be designed into different topological configurations, the upper panel (1), the middle plate (2) and the lower panel (3) are made of birch plywood, and the lattice sandwich layer (4) is made of birch round-bar tenons. A wood-based double-layer lattice sandwich structure is realized by the following technical scheme:

1. designing the size and variable parameters of the dot matrix sandwich structure, including the center distance of adjacent drill holes, the depth of the drill holes, the inclination angle of the core, the height of the core, the diameter of the core, the thickness of an upper panel, the thickness of a middle panel, the thickness of a lower panel, the length of a panel, the width of the panel and the like.

2. The preparation work is completed by veneer sawing, scribing and core preparation and adhesive preparation.

3. Punching on the panel, assembling an upper panel, an intermediate plate, a lower panel and a core, connecting the panel and the core through an adhesive, standing the test piece until the adhesive is solidified, and then performing surface planing treatment on the test piece.

Adopt the technical scheme provided by the utility model, compare with existing well-known technique, have following apparent effect:

1. the utility model adopts the insertion-gluing method to prepare the sandwich structure test piece, the operation process is relatively simple and easy to realize.

2. The utility model discloses can adopt the inferior timber of path, artifical fast-growing forest as panel material, convenient for material collection, it is with low costs.

3. The utility model provides a double-deck dot matrix sandwich structure of wooden base is applied to the dot matrix structure in the design of wooden engineering material, overcomes traditional wooden sandwich material and is from great, and the sandwich layer seals etc. not enough.

4. The utility model discloses a double-deck dot matrix sandwich structure of wooden material preparation, the green of drawing materials, structure specific strength and specific rigidity are high, can be applied to in the wooden structure building field.

Drawings

FIG. 1 is a front view of the present invention

FIG. 2 is a side view of the present invention

FIG. 3-core layout diagram of the present invention

Fig. 4-the utility model discloses the top panel schematic diagram that punches

The reference numerals in the schematic drawings illustrate:

1. an upper panel; 2. a middle plate; 3. a lower panel; 4 lattice core layer.

Detailed Description

For a further understanding of the present invention, reference will be made to the following detailed description taken in conjunction with the accompanying drawings and examples.

A wood-based double-layer lattice sandwich structure comprises an upper panel (1), a middle plate (2), a lower panel (3) and a lattice sandwich layer (4), wherein the upper panel (1), the middle plate (2), the lower panel (3) and the lattice sandwich layer (4) are connected through an inserting-gluing method. The lattice core layer (4) can be designed into different topological configurations, the upper panel (1), the middle panel (2) and the lower panel (3) are made of birch plywood, the upper panel and the lower panel are 9mm in thickness, the middle panel is 5 or 9mm in thickness, the core layer is 45mm in height, and the middle position of the core layer is placed on the middle panel. The dot matrix core is made of birch round bar tenons with the length of 90mm and the diameter of 6mm, the birch round bar tenons penetrate through the upper, middle and lower panels, and the included angle between the core and the upper and lower panels is 45 degrees. The adhesive is epoxy resin, and the mass ratio of the epoxy resin to the curing agent to the diluent is 10:6: 1.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A wood-based double-layer lattice sandwich structure is characterized by comprising an upper panel (1), a middle panel (2), a lower panel (3) and a lattice sandwich layer (4), wherein the upper panel (1), the middle panel (2), the lower panel (3) and the lattice sandwich layer (4) are connected through an inserting-gluing method.

2. The wood-based double lattice sandwich structure according to claim 1, characterized in that the lattice core layer (4) can be designed in different topological configurations.

3. The wood-based double-layer lattice sandwich structure according to claim 1, wherein the upper panel (1), the middle panel (2) and the lower panel (3) are made of birch plywood.

4. The wood-based double-layer lattice sandwich structure according to claim 1, characterized in that the lattice core layer (4) is made of birch round tenons.