LT3939B - Joint structure - Google Patents

Abstract

The invention is used in civil engineering and describes the method for connecting the three layer shields, which consist of a core (1) of mineral wool, which is covered by plates (2) from both sides. The covering plates (2) are glued to the core (1) of the mineral wool. The core (1) of the mineral wool is left uncovered at the edge of the connection of a tenon-groove (3, 3<1>) of the covering plates (2). In order to ensure the tightness of the connection, the core of the mineral wool is pressed more at the zone of the tenon-groove connection.

Description

The present invention relates to the construction industry and describes the joining of structural three-layer panels with a core of mineral wool coated on both sides with cover sheets. The covering sheets of these panels are made of mineral wool core, made of solid structural mineral wool, its metal and the core consists of a shear strength of 25-100 kN / cm ² during installation. The core and cover sheet are glued together.

The edges of the panels have a tongue-and-groove structure made of cover sheets, which facilitates the connection of the panels. To ensure the integrity of the thermal insulation at such a joint, the mineral wool core at the edges of the panels is not covered by cover sheets forming a tongue and groove.

The tongue-groove construction and the dimensions of the wool core are chosen so that the exposed edges of the mineral wool core face against each other when the panels are not covered. Such joint integrity is of paramount importance not only for thermal insulation but also for fire protection. The mineral wool core of the panel is non-flammable, but as a result of the compression or movement of the mineral wool, cracks may occur in the joint that reduce the fire resistance.

Very precise fittings must be used for the precise connection of the panel core sections to each other. In the past, panels were fixed to each other and protected against misalignment with respect to various reinforcements, e.g. bolt, help. Such a merger is given in EP application no. 289,096.

It is an object of the present invention to provide a joint having a resilient tolerance to panel size changes or small mutual displacements without affecting thermal insulation and fire resistance. Another object of the present invention is to fasten the panels to one another without the use of screws and other individual fasteners which affect the overall appearance of the panels and their ease of installation and cost.

The above-mentioned advantages of the present invention are achieved by separating the covering structure from at least one non-covered edge of the attachable cores for contact with another core edge at a distance equal to half the height of the tongue-groove joint.

Mineral wool is elastic. However, the structural mineral wool used for shield cores is highly resistant to compression. Because the wool is glued to the cover sheet over the edge of the tongue-and-groove structure, it is necessary to overcome not only the internal compression strength of the mineral wool core during panel assembly, but also its impact resistance against the cover sheet protecting the mineral wool.

According to the basic concept of the invention, the mineral wool forming the core of the panel is made capable of being compressed by pressing over the entire contact surface area of the joint. According to a specific embodiment of this concept, the joint contact surface has a separate mineral wool sealing strip which is more elastic (softer) than the shield core.

The elasticity of the mineral wool at the joint also facilitates the creation of a new type of bonding between the cover sheets thanks to the tongue-and-groove locking tabs / lugs.

According to the present invention, the shield core may be more compressible than previous shields and slightly protrude above the edges. At the edge of the panel core joint, cut-outs or recesses are made to the inside of the panel core. These notches or notches reduce the compression strength of the core of the cover sheet and thereby increase the elasticity of the panel core at the joint edge and reduce its impact resistance. At the same time, the notches or notches provide more space for compressing the mineral wool.

When the depth of the tongue-and-groove connection between the panels is approximately 15-20 mm, the depth of the notches or cuts may be 15-50 mm depending on the type of wool. the notches or notches may be made on only one edge of the contact or alternatively both. If the notches or notches are made at both edges of the joint contact, their depth may be less than if they were made at only one edge of the contact panels.

In the practice of the invention, when a different type of mineral wool is used in the connection strip, the mineral wool core of the panel is slightly shortened. It is truncated, for example, by cutting the strip off the cores of both contact panels or, alternatively, from the core of only one panel. The thickness of the strip removed from one panel or both shall be equal to the depth of the tongue-to-groove joint. The resulting gap is filled with a slightly thicker, more elastic mineral wool strip than the shield core mineral wool.

The invention will now be described in more detail with reference to the accompanying drawings, in which:

Fig. 1 is a cross-sectional view of the contact edges of two interconnecting panels, these edges having two alternative structural details according to the invention.

Fig. 2 is a perspective view of the implementation of the interconnection of side panels of two interconnecting panels.

Fig. 3 is a perspective view of an alternative interconnection embodiment.

Figure 4 is a further perspective view of an alternative embodiment of joining the cover sheets to one another.

Figure 5 is a further perspective view of an alternative embodiment of joining the cover sheets to one another.

Figure 6 is a cross-sectional view.

of an alternative embodiment of Fig.l

Fig. 1 shows the bottom and top edges of two conventional three-layer panels, the contours of both edges for contact connection. The panels are made of mineral wool, both of which have a core 1, half coated

2. Coating sheets are the conventional tongue-to-groove cover sheet glued to the edges of the panel, forming sheets 3, 3 *.

The edges of the panel at the tongue-and-groove joint are not covered, leaving the surface of the mineral wool exposed. When the panels are tightened during installation, these mineral wool core 1 surfaces are easily pressed against one another.

As shown in Fig. 1, the portion of mineral wool core 1 at the bottom edge of the panel panel is separated by notches 4 made from the open surface of the core to the interior of the panel core parallel to the panel panel edge. These notches are required to separate the mineral wool core portion from the mineral wool core portion that is attached to the cover sheets 2. In this way, the panel coating is detached from the compressible core and can not resist the mineral wool core notches to a depth of 20-50 mm. and they are made on one or both edges of the shields to be joined. Instead of the notches 4 in the mineral wool, narrow notches can be made to give the wad core more space for compression, the elastic connection is illustrated in the top panel where the strip cut from the mineral wool core at the bottom edge is replaced by a separate mineral wool sealing strip. If this strip of mineral wool is easier to compress than to compress. these depend on the mineral

Next to the shield cores, it provides better elastic bonding than just shield cores alone.

In Fig. 6, narrow wedges 5 and 6 are made in the mineral wool core 1 at an angle to its plane. They may be directed from the joint surface either to the center of the core or to the panel surface.

The number of slots 4 or slots 5, 6, 6 'can be varied but does not reduce the overall joint strength required. Notches and notches can be made at different angles to each other and have different depths.

Suitable bonding is also achieved by forming an initial mineral wool forming the core, making the wool more elastic and easier to compress. This feature of mineral wool is obtained by weakening the interconnection of mineral fibers. This is done by sufficiently strong compression of mineral wool over the entire length of the joint, using, for example, a reciprocating press. This process reduces the interconnection of the fibers and increases the friability of the mineral wool. At the same time, the volume of the treated wool is increased, thus forming a suitable sealing strip of elastic wool. This machining method can be applied to both joint edges, with or without the above-described separation notches.

It has been observed that the above modification of the joint significantly improves the fire performance of the shields, since even when the shields move or tilt significantly, the modified joint does not cause cracks. Other useful results may be obtained by modifying the panel coating sheets. Such modifications are intended to increase the reliability of panel interconnection, e.g. in the event of a fire, the displacement between them is less than that of a normal joint.

Fig. 2 shows a cover plate locking device adapted for this connection. At the top of the panel

Such a reliable edge and, accordingly, at its lower edge, the cover sheets 2, 2 'are folded so as to form a tongue groove connection with the flanges 2a, 2b, perpendicular to the panel plane, which exactly fits with one another when the panels are tightened. Each flange has a locking notch 5, 5 '. The notch 5 in the upper flange 2a of the panel is made either by completely cutting the flange portion or by cutting the slit (Fig. 3, 5 '' '). Accordingly, the cut-out portion 5 'of the bottom flange 2b of the panel is folded inward to form a clamp 5' '. this clamp is depressed during slab assembly and slides beneath the lower edge of the notch 5 in the flange 2a of the lower edge of the panel. Compressed elastic mineral wool pushes the connecting members apart, so that the clamp 5 '' is locked in the flange 2a.

locking the panels is especially so as to maximize the movement or distortion of the panels relative to each other as compared to panels with normal joints.

The flanges may also be interconnected using other embodiments of the notch / tab shown in Figures 4 and 5. In these embodiments, the edges of the notches 5 are locked to each other by tabs cut from the sheet at the notch, the tabs being moved relative to one another direction.

in the event of fire,

Ί

Claims (8)

DEFINITION OF INVENTION 1. A three-layer panel consisting of a structural mineral wool core (1), coated on both sides with metal-bearing core-wide sides attached to the core, and over the panel structure by cover sheets (2) protruding from the exposed surface of the tongue-groove (1). forming a joint (3, 3 ') for the force of the core-coating sheet, characterized in that at least one portion of the uncoated edge of the press-core (1) is separated by a notch approximately half of the tongue-groove joint (3, 3 ') in height. Joining according to Claim 1, characterized in that the mineral wool core is separated from the shielding sheet by cuts made in the mineral wool core parallel to the shield plane. 3. Joining according to claim 1, characterized in that the mineral wool core is separated from the shielding sheet by incisions made at an angle to the shield plane. Joining according to claim 3, characterized in that these slots are directed diagonally from the joining surface to the panel surface. Joining according to Claim 3, characterized in that these notches are directed away from the joining surface diagonally to the center of the panel core plane. Joining according to any one of claims 2 to 5, characterized in that a plurality of notches having the same role as the notch separating the mineral wool core from the cover sheet are made in the mineral wool core. Joining according to claims 1-6, characterized in that the mineral wool core is separated from the cover sheet by removing a portion of the core material. 8. Connection according to claim 7, characterized in i s k i r i a n- s that removed from the core mineral wool is modified easier to compress Mineral wool. 9. Connection according to claim 1, 2 or 3, Come on s k i- characterized in that the core bonding surface is specially machined to reduce the bonding and, at the same time, adhesion to the coating sheet of the fibers of the mineral wool core (1). 10. Connection according to. Claims 1-9, characterized in that the connection of the cover sheets (2, 2 ') consists of a panel perpendicular to the panel and parallel flanges (2a, 2b) having locking notches (5, 5') and that at least one cover sheet is a locking tab made by a partial cut-out of the cover sheet.