SU1040079A1 - Device for casting slab ends - Google Patents

Description

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The invention relates to multi-layer structures of composite non-metallic materials, used in construction, aircraft building and shipbuilding.

Known site sealing the ends of the panels and shells of non-metallic material, such as fiberglass. The ends of the panels are covered with layers of fiberglass l.

However, when joining a panel or a shell with elements of a metal structure, the joint of fiberglass plastic with metal is more heavy than the all-metal joint due to the low compressive strength of the fiberglass plastic. The strength of a termination unit of this type is determined only by the strength of the sheath and the strength of the adhesive bonding of the filler end with fiberglass laminate. The filler himself does not take part in the transfer of efforts

Closest to the invention is a jig of the ends of the panels and shells containing outer skin and honeycomb, formed by interconnected flat and corrugated strips. At the end of the panel there is a sample of the filler and in the free space between the skins there is a metal insert of rectangular section, connected to the skins of the polymeric binder C2.

The disadvantage of such assemblies of the End panels - and shells is their low strength, since the aggregate itself is not constructively connected with liners and does not participate in the transmission of tensile forces.

The aim of the invention is to increase the strength of the sealing unit.

The goal is achieved by the fact that in the site of embedding the ends of the panel containing the plating and honeycomb with corrugated strips, including the metal insert, the metal insert is connected to the panel filler by means of closed weights, missed between

strips of filler and fixed on the liners, the liners are provided with teeth fixed to them and crackers, the inner surface of which corresponds to the inner surface of the weights.

The drawing shows the assembly site of the ends of a three-layer panel of metal material, general view.

The panel end fitting assembly includes the casing 1 and the feller consisting of corrugated tapes 2 and strands 3, which are fastened through crackers 4 to a metal insert 5 provided with teeth 6.

When exposed to the tension panel or compressive load, the forces are transmitted through the crackers 4 and the teeth 6 of the liner 5 on the filler weight 3, which are filled with unidirectional fibers of the composite material and have a high specific strength.

A power cylindrical shell with a diameter of 350 mm and a length of 770 mm was made for fastening the apparatus. On the ends of the shell, milled duralumin frames (liners) are embedded, the total thickness is 12 mm, the height is filled. 8 mm. The thickness of the skins is 2 mm. Thickness of the threads made of hardened fiberglass 1., 0 mm. The skins are made of fiberglass with radial winding of glass fibers at the connection between EF-32-301-16.

The present invention allows the construction of;., The embedding units of the ends of three-layer panels and shells of metallic materials with high bending strength, shear and especially breaking due to the connection of metallic liners and filler by means of weights and teeth of the liners through the crackers. .

By increasing the thickness of the shells, it is possible to significantly increase the strength of the end fitting assembly, without increasing the thickness of the casings and the height of the aggregate under the action of tensile loads.

Claims (1)

TERMINAL ASSEMBLY ASSEMBLY OF THE PANEL containing the casing and honeycomb core with corrugated strips, including a metal insert, characterized in that, in order to increase the strength of the seal assembly, the insert is connected to the panel filler by means of closed ropes passed between the filler strips fixed on the inserts, moreover, the liners are equipped with teeth fixed on them, and crackers, the inner surface of which corresponds to the inner surface of the strands.