SU975961A1 - Panel - Google Patents

Description

The invention relates to the construction and can be used

when equipping industrial and

civilian buildings and structures

also aircraft fuselages.

Known construction panel,

including two flat parallel

each other plating between which

the spatial system of zigzag stripes is located, isolated from each other and connected

with both skins (1].

The disadvantage of this design is its low rigidity, due to the low stability of the elements

zigzag stripes with bending

effort.

Known construction panel,

including profiled in one

direction one piece plate

screen, enclosed between parallel flat skins [2].

The disadvantage of this panel is low stiffness in the direction perpendicular to profiling,

since in this direction the profiled screen does not resist bending forces. In this intense

both panel skins work. One

25

thirty

2

of these, it works in tension, and the other = "gaya - in compression. The reliability of the entire panel will be determined by the stability of the flat plating, working in compression, and this resistance will be low due to the small thickness of the plating.

Closest to the invention is a panel comprising a skin and an embossed screen sandwiched between them, containing zigzag strips of parallelogram-shaped plates and connected to the skin with contact ribs [3}.

However, the known panel is not sufficiently rigid and not technological, since it cannot be made by the method of cold bending from a flat scan.

The aim of the invention is to increase the rigidity of the panel, increasing the reliability of its work in the perception of bending forces.

This goal is achieved by the fact that in a panel that includes a skin and an embossed screen between them, containing zigzag stripes of parallelogram plates and connected to the skin with contact ribs, the screen

3

975961

four

formed by a flat sheet scan, profiled in two mutually perpendicular directions, with the strips of plates in the form of a parallelogram connected by strips of equal-size rectangular plates.

In addition, the angle between the rectangular plates ranges from 60 60 to 110 °.

FIG. 1 shows a diagram of a panel with a partially removed upper skin; in FIG. 2 - relief promet · yasutochny screen; in fig. 3 - the same, a fragment of its flat scan.

The panel consists of flat parallel casings 1 and 2, between which is embossed an intermediate screen 3 consisting of alternating longitudinal zigzag stripes 4 and 5, including equal-sized rectangular plates 6 and 7 inclined to each other and parallelogram, intersecting along edges 8 and 9.

Ribs 8 and 9 form a wave-like. These belts run in the transverse direction and lie in parallel planes, along which the relief screen 3 is joined to the skins 1 and 2. The optimum angle of inclination of the component plates 6 and 7 to each other is within the range of 60–110 °. When the angle of inclination is more than 110 °, the resistance of the intermediate screen 3 to the bending forces decreases, since its relief decreases. At an angle of less than 60 °, there is an overrun of the material and the screen weight increases.

The shells 1 and 2 can be made of an elastic rigid sheet material of small thickness, for example, of metal. The relief intermediate screen 3 is made of a similar material by the method of stamping or bending of a flat sheet blank. The skins 1 and 2 are fixed to the relief intermediate screen 3 by one of the known methods, for example, by welding.

The application of the proposed panel will allow to increase its rigidity by 25-35% due to the fact that the intermediate relief screen of the panel is an independent rigid system, and flat plating only stabilize it and exclude the relative movement of the screen points while perceiving the load.

In addition, the relief intermediate panel screen has a flat sheet reamer, which, as research shows, allows for simple and economical production methods (punching, bending) to get screens with minimal plastic deformations and material extraction at the folds of the flat sheet. This will increase the reliability of the panel and reduce its cost.

'

Claims (2)

Claim 1. A panel comprising claddings and an embossed screen between them, containing zigzag strips of parallelogram plates and connected to claddings with contact ribs, characterized in that, in order to increase the rigidity of the panel, the screen is formed from a flat sheet scanned profiled two mutually per- * pendicular directions, with strips of plates in the form of a parallelogram connected by strips of equal-size rectangular plates. 2. The panel according to claim 1, about t l and c with the fact that the angle between rectangular plates ranges from 60 to 110 °.