DE1941827U - EVEN OR CURVED COMPONENT DESIGNED AS A FLAT STRUCTURE, IN PARTICULAR MADE OF GLASS FIBER REINFORCED PLASTIC. - Google Patents

Description

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made of glass fiber reinforced plastic.

The innovation concerns one made of plastic, mainly made of fiber-reinforced plastic A structural element designed as a planar structure with high static qualities is made up of the simplest basic elements that can be produced in a continuous process. Under A planar structure is to be understood as a planar structure, the bending and buckling loads, in other words, withstands loads such as occur in structural engineering within wide limits. the The design of the basic elements and their assembly to form a planar structure must therefore with careful consideration of the principles of statics.

The so-called composite or sandwich panels currently on the market, e.g. in the form of grid panels etc. can therefore not be viewed as surface structures in the sense indicated above will. They fulfill the task on which the innovation is based only to an inadequate extent and show significant deficiencies: they partly consist of different materials (e.g. from moisture-sensitive cardboard honeycomb) or off Materials with different elasticity characteristics (metal grid). You have to continue non-bendable intermediate layers and close like this the production of curved or curved Surfaces ™ structures and, moreover, show defective ones static properties, at least in one if not in all directions. Your structure can

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also not borrowed from basic elements that in the continuous process are a "factor that is economically important plays an essential role.

These disadvantages also occur, at least in the most important points, with composite panels that consist of two flat glass fiber plastic surfaces, which are connected to one another by longitudinal or transverse webs. More well-known Versions with spacing Profiled panels meet the structural requirements for the design in their overall structure a supporting structure, especially a framework, is only very imperfect and can be a Can not withstand comparison with the planar structure according to the innovation, which in its technical and static conception meets these requirements up to final consequence follows.

Such a structure built according to these strict static principles is the subject of Innovation.

This planar structure is designed in such a way that an intermediate plate eyi , which is only profiled in one direction, is firmly inserted between two, predominantly parallel, expediently planar plates, for example by gluing. The profile of this intermediate plate is designed in such a way that a section through the planar structure running transversely to the profile results in the image of a (flat) lattice girder. In particular

after the innovation, the cross-section should give the image of such a framework, its framework elements Form triangles (triangular mesh).

The purely technical structure of the subject of the innovation and details thereof are from the See the drawing, which is explained in detail below.

The drawing shows in detail;

Figure 1 is the perspective image of a

Planar structure after the innovation;

^ igur 2 a section across the profile of the structure (schematic);

Figure 3 shows the schematic sectional view of a double structure with a common intermediate plate;

Figure 4 shows a curved planar structure

according to the innovation with shaped plate (sectional view);

Figure 5 is a schematic sectional view the profile edge design;

FIG. 6 shows the schematic sectional illustration of a widening of the profile cards through adhesive material;

FIG. 7 shows the schematic sectional illustration of a widening of the profile edges through bars $

The basic structure of the new planar structure show in an example the figures 1 and 2,

Between two plates 1 and 2, which are expediently flat, i.e. designed flat and level, lies an intermediate plate that is only profiled in one direction 3. These recurring basic elements 1, 2, 3 are firmly connected to each other.

The connection is made with the plastic material used here (especially fiberglass) useful by gluing. The essential inventive feature is the design the profiled intermediate plate 3, the profile of which is designed so that a transverse to Profiling a running cut through the planar structure gives the image of a level truss. This means that the construction meets strict statics standards. Of the possible Examples that meet the basic rule according to the innovation is singled out and a special one is dealt with in detail below, namely the design of the profile of the intermediate plate 3 in such a way that the cross-section of a flat framework results, the framework elements of which are triangles form (triangular lattice). This embodiment can be seen particularly from FIG.

It can - and this is part of the further training of the control system - several superimposed and flat structures that are firmly connected to one another to create a greater overall profile height can be put together without the favorable static properties of the Single structure get lost. It deals

This is about a summation of the static elements and the strength of the overall structure increasing by the square of the profile height. With this combination, it appears appropriate to have two adjacent planar structures, for example the structures 4 · and 4, in FIG. 3

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the profile layers 3 and 3t »only one common

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the same plate 5 allot. It will also be beneficial if, in the case of two profiled intermediate plates 3 and 3-u, they

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be attached that their profile openings are facing each other, as shown in FIG reveals.

This principle can of course also be applied to more than two systems. It stays also the possibility (similar to the plywood structure), the profile directions to change, for example in such a way that in a three-tier system the middle tier is included is equipped with a profile running transversely to the outer layer profile directions,

So far, only flat surface structures have been dealt with. A great asset of the item The innovation is that curved or curved structures can also be produced, which in the final state have the same strength properties and the same static behavior like the flat structures described. Requirement for manufacture is a mold plate 7 (see Fig. 4) »to which the elements are applied individually and then glued together on the mold.

It can be seen that the initially free profile plate adapts to any curvature of the shape, provided that the profile course with the parallel surface lines of the Surface of curvature coincides.

To ensure sufficient adhesion of the profile edges (see Fig. 5) to the end plates 1 and 2 achieve, you can flatten these edges so that one is sufficient for the connection Adhesive surface is created. It can be seen that with it the static and strength advantages of the triangular lattice are not lost.

FIG. 6 shows another method for producing larger adhesive surfaces for the connection To achieve profile edge end plates. In general, it is already sufficient if an excess of adhesive material the acute dihedral angle between end plates 1/2 and profile leg fills.

This acute angle can also, as Figure 7 shows, with a (glued) Web 11 are filled, which increases the adhesive surface in this way.

It should be noted that in the manufacture of the innovation according to the plan and curved The surface structure has only two basic elements namely the end plate (s) and the profiled intermediate plate are output elements. These two basic elements can be used in the continuous process without much labor. The assembly of the starting parts to form the finished product can also be done by machine.

Claims (10)

_ 7 - 21.6-9.3.06 These favorable manufacturing conditions and the low cost of materials compared to similar panels make it possible to produce a planar structure that not only brings economic advantages, but also and that is the decisive factor - high static qualities and meets the highest strength requirements. These properties are particularly suitable for versatile use in the construction industry. .§. ^ LJLJLiL 1. Flat or curved structural element designed as a planar structure, in particular made of fiber-reinforced plastic _y, characterized in that an intermediate plate (3) profiled only in one direction is firmly inserted, for example by gluing, between two, mainly parallel, expediently planar plates (1/2) whose profile is designed in such a way that a section through the planar structure running transversely to the profiling results in the image of a truss, 2. planar structure according to claim 1, characterized in that the sectional view the of a flat construction, the framework elements of which form triangles (triangular network Fig »2) 3. planar structure according to claims 1 and 2, characterized by several superimposed and flat structures that are firmly connected to one another. 4. planar structure according to claim 3, characterized in that every two adjacent planar structures (4 AJ ₃ ) have an end plate (5) in common (Figure 3). 5. planar structure according to claims 3 and 4, characterized in that two profiled Intermediate plates (3/3-u) this way ει υ are attached to each other that their profile openings are facing each other (Fig. 3). 6. planar structure according to claims 3 and 4, characterized in that the profile directions the adjacent intermediate plates (3) (separated by the cover plate (s)) cross and are mainly separated by 90 » 7. Curved planar structure according to claims 1 to 5, characterized in that on a the curvature-determining shape (7) the elements are applied individually and then on the Shape are glued together that the profile course with the parallel surface lines the surface of curvature coincides (Fig. 4). 8. planar structure according to claims 1 to 7, characterized in that the to the end plates (1/2 Fig. 5) abutting edges (10) of the profiled intermediate plate (3) slightly, i.e. flattened so far that they are one for the connection with the End plates have sufficient adhesive surface o. "9 _ 9. planar structure according to claims 1 to 8, characterized in that the to the End plates (1/2, Pig. 6) abut Edges (9) of the profiled intermediate plate (3) enlarged adhesive surfaces for the connection obtained by having an excess of adhesive material between the acute surface angle The end plate (1/2) and profile leg fills (Fig. 6), 10. planar structure according to claims 1 to 9> characterized in that the tip Surface angle between the end plate (1/2) and profile leg (preferably continuous together with the manufacturing process) with a filling, enlarging the adhesive surface Web (11, Fig. 7) is provided.