Fastening system for large roof coverings or wall cladding made of metal

The invention relates to a fastening system for large-area roof coverings or

Wall cladding made of metal for fastening flat roof elements, sheet metal plates or sheet metal strips that can be arranged next to one another on roof or wall substructures, wherein the roof elements, sheet metal plates or sheet metal strips can be flat, corrugated or profiled.

In the case of laid sheet metal strips lying next to one another or large-area, laminated roof panels for roofing or wall cladding, fasteners penetrating the roof membrane should on the one hand be dispensed with, but on the other hand there is a risk that through

Suction effects from strong gusts of wind or hurricane-like storms a secure fastening of the roof cladding to the supporting substructures underneath is required. However, the individual neighboring roof panels must enable a complete covering of roofs or wall surfaces, some of which are very large, differently inclined and differently curved. With certain roof shapes, the curvature alone can increase this suction effect in individual areas. The interplay between positive and negative wind loads and temperature fluctuations create additional loads. The requirements for the

Roof fastening, the effects of positive wind loads (compressive forces), negative wind loads (tensile forces), expansion when heated and contraction when cooling (sliding and shear forces) must be controlled while ensuring tightness. A construction and laying method has therefore prevailed in which the individual sheet metal strips or

Sheet metal plates are held along spaced apart longitudinal ribs on the roof skin of the roof or wall substructure. There are a number of different ones

Roof fastenings are known in which fastening means are used for safety reasons, which penetrate the roof skin at different points, spaced from one another, which sooner or later always leads to sealing problems of such roof or wall coverings. This is therefore unsuitable for many roofs and wall arrangements and requires a high level of maintenance. Roof and wall coverings that do not have to penetrate the roof are therefore preferred. As a rule, differently designed, internally arranged holders are therefore used for fastening, which are intended to reliably fasten the roof skin. These are arranged at certain distances from one another, depending on the design. One sheet metal sheet overlaps the next in order to be able to establish the tightness.

Such a technical solution is known from EP 0 530 483 A1, in which the roof is clad by means of profiled sheet metal sheets arranged side by side, with an adjacent sheet metal sheet overlapping the next sheet metal sheet along an upwardly formed longitudinal rib on one side in one and the same direction . The sheet metal sheets are held on the roof substructure by different bending folds, which in a

hook-shaped holders are positively attached to ensure adequate attachment. However, this fastening solution requires differently preformed ones

Sheet metal. A hook-shaped holder, which is attached to the supporting substructure, is used for fastening. As is common practice, it is screwed to the substructure. The hook-shaped holder can be shaped differently. However, with this type of fastening, only a purely form-fitting fastening of the sheet metal webs with the internal screwed holding element is possible. However, due to the diverse forces acting on it, the form fit can bend up over longer periods of time and the strength can be so low that individual sheet metal tracks can be covered during hurricanes.

In EP 204 123 B1 a modular system for a wall structure is described where

Plate-shaped facade structures can be clicked into a holding element and with flanges on the left and right of each plate element being arranged at a certain angle, the free ends of which are bent over so that protrusions are formed at the end which engage in indentations of a holding element. The retaining element is screwed to the substructure. This solution has the disadvantage that this form-fitting connection can only withstand high negative wind loads to a limited extent and, moreover, this facade structure is not waterproof.

In DE 199 41 510 A1, another roof covering consisting of sheet metal strips lying next to one another is described, which are connected to one another on both sides in the assembly method via longitudinal ribs which are formed and which are also sealed. So-called retaining strips are screwed onto the roof substructure for attachment. On the left and right of the retaining bar there are protruding hooks, the head parts of which are bent over in the shape of a hook on one side. The sheet metal tracks have longitudinal ribs that protrude at right angles to the left and right. One side of the sheet metal web engages under the hook, while the other side also engages around the head part and the longitudinal rib that engages under it in a hook-shaped manner, and the form fit is also established over it. The purely positive connection is also disadvantageous here,

In another roof fastening according to US 2009/0094921 A1, a fastening system is also described in which the fastening is carried out via protruding longitudinal ribs with the roof substructure in that the ends of the protruding sheet metal legs of adjacent so-called pans engage around each other and a standing seam is formed. So that this form-fitting connection does not expand under load, clips are attached, which exert a kind of clamp effect. The problem here is that this type of fastening system does not sufficiently stabilize and fix the pans (sheet metal sheets) because they are only fixed at the upper end of the standing seams and the pans can therefore easily bend under the various forces acting on them. In some cases, the roof skin can deform considerably.

The object of the invention is to create a fastening system for large-area roof coverings or wall cladding made of metal for fastening flat roof elements, sheet metal plates or sheet metal strips that can be arranged next to one another on roof or wall substructures, which is structurally simple, consists of few parts, can be quickly installed and which is for high negative wind loads is suitable.

The object is achieved according to the invention by the features of the first patent claim. Further expedient refinements of the invention are the subject matter of the further dependent claims. The fastening system according to the invention for large-area roof coverings or wall cladding made of metal is for fastening two or as many as desired

Flat roof elements, sheet metal plates or sheet metal tracks that can be arranged next to one another on roof or wall substructures are suitable, the roof elements, sheet metal sheets or sheet metal sheets 1 being designed differently, such as flat, or corrugated or profiled. The

Attachment takes place within towering longitudinal ribs 2, which through on the sides

upstanding sheet metal legs 1 1 are formed. These sheet metal legs 11 are preferably bent at right angles, but other angles (obtuse or acute angled) are also conceivable. The longitudinal strips 2 can run parallel or obliquely to one another on the covering and are designed to be distributed over the roof covering or wall cladding. According to the invention, on the roof or wall substructure within the protruding longitudinal ribs 2, T-shaped ones running continuously or only in places (then referred to as base elements)

Base strips 3 arranged and fastened. The horizontal wide leg of the T-shaped

Base strips 3 (or base elements), referred to as foot legs 5, can be arranged downwards or upwards. In the T-shaped base bar 3, indentations 6 are formed on the left and right in the vertical limb of the T-shaped base bar 3, referred to as the middle limb 4, reaching into the foot limb 5. Specially designed formations 13 of the lateral sheet metal legs 11 of the roof elements, sheet metal plates or sheet metal sheets 1 engage in these recesses 6. These preformed formations 13 result in a form fit in connection with the press plates 9 that can be arranged on or on the center leg 4. The pressing plates 9 are attached in a suitable manner to the base strip head 7 in a form-fitting manner or, for example, screwed. However, a material connection is also possible for certain roof coverings. The

Press plates 9 are shaped in such a way that the press plates 9 overlap the formations 13 of the sheet metal legs 11 of the roof elements, sheet metal sheets or sheet metal strips 1 lying next to one another. This creates a durable, form-fitting connection by means of a T-shaped base strip 3 (or, if arranged in pieces, can be referred to as a base element), middle limb 4 and press plate 9 formed closed with a cover strip 12.

A particularly good durable, permanent, form-fitting connection between the roof elements, sheet metal plates or sheet metal strips 1 and the T-shaped base strip or the T-shaped one

Base element 3 with the middle legs 4 and leg legs 5 in the fastening system for large-scale roofing or wall cladding is achieved when the dimensions and shapes of the formations 13 in the sheet metal legs 1 1 with the dimensions and shapes of

Depressions 6 in the middle leg 4 and in the leg legs 5 correspond. The dimensions and shapes of the press plates 9 are also preferably based on the dimensions and shapes of the

Formings 13 matched.

It is of considerable advantage if, in the fastening system for large-area roof coverings or wall cladding, the two recesses 6 in the middle limb 4 and in the foot limbs 5 are symmetrical. Then the roof elements, sheet metal plates or sheet metal webs 1 with the upright prefabricated formations 13 and the sheet metal legs 11 left and right can be shaped identically (also symmetrically). This brings considerable time and cost advantages during their production of the preformed roof elements, sheet metal plates or sheet metal strips 1. In addition, the installation position is then not specified, which in turn has advantages when it comes to roof or wall mounting on site.

In the fastening system for large-area roof coverings or wall cladding, different shapes of the recesses 6 and associated recesses 13 can advantageously be used. So the two indentations 6 in the middle leg 4 and in the

Leg 5, taking into account the shape of the press plate 9 in the pressure area, can be dovetail-shaped or oval-shaped or round in cross-section.

In a simple manner, the security against negative wind loads can be hereditary improved if the fastening system for large-area roofing or

Wall claddings are additionally arranged in the formations 13 of the sheet metal legs 11 reinforcing rods 14. These reinforcing rods 14 are pushed laterally into the formations 13 or already inserted beforehand. The cross sections are preferred

Reinforcing rods 14 matched to the cross sections of the formations 13. This prevents the relatively thin-walled sheet metal roof elements, sheet metal plates or sheet metal webs 1 from deforming over time due to the forces acting and from being able to lose the form fit. However, it is also conceivable that the cross sections differ from one another. For example, triangular or square cross sections of the reinforcement rods 14 are also conceivable. The reinforcement rods create a non-positive connection that cannot be released by itself. Furthermore, the reinforcement rods 14 have the

Effect that the stability of the entire roof between the longitudinal ribs 2 is significantly improved. There are hardly any deformations in the entire roof membrane. The roof skin is mechanically strengthened and tensioned practically immediately above the roof or wall substructure and permanently retains its position and shape in relation to the

Roof substructure, as the form-fitting connection cannot be bent open.

The form-fitting connection in the case of the invention is the safest and most stable

Fastening system for large roofing or wall cladding, if the dimensions and the cross-sectional shape of the reinforcement rods 14 are precisely matched to the dimensions and cross-sectional shape of the formations 13 of the sheet metal legs 11 and also to the cross-sectional shape of the recesses 6.

Instead of a positive connection of the press plates 9 with the base strip head 7 in the fastening system for large-area roof coverings or wall cladding, the press plates 9 fastened to or on the center leg 4 can also be spaced at suitable intervals

non-positively screwed to the base strip head 7 by means of head screws 10, which are inserted at certain intervals depending on the load.

For reasons of strength, the T-shaped base strips 3 or the T-shaped base elements 3 can be used in the fastening system for large-area roof coverings or wall cladding

alternately or in pairs with the roof or wall substructure by means of appropriately dimensioned base screws 8.

It is advantageous if the T-shaped base strips 3 and / or the pressing plates 9 are designed as profile rails in the fastening system for large-area roof coverings or wall cladding. The T-shaped base strip 3 or the pressure plates 9 can be arranged in sections with a gap or even over the entire roof extension, ie extending without gaps, for reasons of strength and stability.

In the fastening system for large-scale roofing or wall cladding on top of the longitudinal ribs 2, continuous cover strips 12 are connected to the sheet metal legs 1 1 by means of a form-fitting folded joint to ensure a secure seal against the effects of the weather, in particular against any moisture.

For certain wider longitudinal rib designs, the inventive

Fastening system for large-area roofing or wall cladding, the T-shaped base strips 3 or T-shaped base elements 3 with the pressure plates 9 can be arranged in a reversed position and fastened to the roof or wall substructure by means of central through fastening screws 15.

Depending on the construction and material of the respective roof covering, the reinforcement rods 14 in the fastening system for large-area roofing or wall cladding can optionally be made of stainless steel, aluminum or various plastics, including rubber materials or fabric composites.

It can also be useful if the additional reinforcing rods 14 when

Fastening system for large-area roofing or wall cladding

different materials are formed. For example, a plastic jacket can compensate for different expansions and friction between reinforcement rods 14 made of metal and the roofing sheet.

In order to prevent the reinforcing rods 14 from slipping out of the formations 13, especially in the case of steep large-area roof coverings or vertical wall cladding

To prevent the fastening system, the reinforcing rods 14 can be fitted with linear,

helical or punctiform elevations 17 may be formed. This causes clawing into the surface within the formations of the respective roofing material.

It is also possible with the fastening system for large-area roof coverings or

Draw wall cladding instead of the inserted reinforcing rods 14 through ropes into the formations 13. These continuous ropes can be braced at the ends if necessary and the entire roof skin can thus be separately connected to the roof or

Wall construction can be lashed and fixed. Furthermore, ropes can also be drawn in under tension (stretched), with such ropes increasing again after the relaxation of the tension and the formation 6 being spatially fully filled. Both steel and other permanently weather-resistant rope designs are suitable here. So z. B. the ropes are made of plastics or carbon fibers, which can also be impregnated with curable synthetic resin impregnation.

The fastening system according to the invention for large roof coverings or

Wall cladding made of metal by means of protruding longitudinal ribs 2 ensures a secure, stable, storm-proof fastening of flat roof elements, sheet metal plates or sheet metal sheets 1 that can be arranged next to one another, both on roofs of various inclinations and curvatures as well as on inclined, vertical or overhanging wall structures and is also absolutely impervious to any climatic influences . It consists of a few structurally different ones

Individual elements, is cost-saving, quick to assemble and can be designed for very high negative wind loads In addition, the various tensile and shear forces, which are not inconsiderable in the case of large roofing, are reliably compensated for without damage, for example due to temperature expansion.

The invention is to be explained in more detail below in an exemplary embodiment with reference to FIGS. 1 to 4.

Fig. 1 shows the cross section through a fastening system according to the invention within a longitudinal rib 2 with paired screwing of the T-shaped base strip 3 on a roof or wall substructure (not shown)

2 shows a fastening system with inserted reinforcing rods 14

FIG. 3 shows a fastening system with screwing of the press plate 9 to a specially designed base element head 7

4 shows a broad, interchanged embodiment with a T-shaped base strip 3 which is screwed throughout and arranged at the top and a securing means by means of reinforcing rods 14 inserted in pairs and elevations 17 arranged thereon

1 shows the cross section through a preferred embodiment of a fastening system according to the invention within a longitudinal rib 2 with symmetrical paired screwing by means of two base screws 8 of the T-shaped base strip 3 on a roof or wall substructure, not shown in the drawing. The base strip head 7 as the end of the center leg 4 of the T-shaped base strip 3 is complementary to one

Connection recess with a T-shaped undercut in the press plate 9, also T-shaped. The T-shaped base strip 3 is screwed with its wide upper bar down onto the roof or wall substructure. The wide upper bar forms the left and right leg 5, which are formed in an almost semicircular shape. The center leg 4 is straight and the base bar head 7 is T-shaped. Instead of the T-shaped connection solution between the base strip head 7 and the press plate 9, a dovetail connection could also be implemented, for example. This has advantages during assembly, since the

Press plate 9 is pushed laterally over the base strip head 7. In the pressing plate 9, almost semicircular indentations are also formed on the left and right of the connection recess towards the bottom. In this way, an almost oval indentation 6 is created

Have been attached to the wall substructure, the two preformed roof elements, sheet metal plates or sheet metal strips 1 are inserted into the T-shaped base strips 3 on the left and right

provided, which are formed here following a double bend. This is advantageous so that the two flat parts of the left and right roof elements, sheet metal plates or sheet metal webs 1 can rest as completely as possible on the roof or wall substructure.

As a rule, these are beam, girder or strut structures, since roof coverings of this type are not laid on full-surface substructures. The shape and location of the formations

13 corresponds in its dimensions and in cross-section with the dimensions and cross-section of

Depressions 6. The roof elements, sheet metal plates or sheet metal webs 1 merge on the sides upwards into sheet metal legs 11 standing up at right angles. If the roof elements, sheet metal plates or sheet metal webs 1 are inserted into the T-shaped base strips 3 or base elements, the press plates 9 are pushed on from the side in a suitable manner. If the roof elements, sheet metal plates or sheet metal webs 1 are now fixed within the longitudinal ribs 2, a continuous cover strip 12 is finally fitted at the top of the upper end of the sheet metal legs 1 1 by means of folding. This is done automatically with a suitable folding machine. The longitudinal rib 2 is thus closed in a climate-safe manner and a permanent, mechanically secure attachment to the roof or wall substructure is established.

In FIG. 2, as already described above in FIG. 1, a similar embodiment of a fastening system for large-area roof coverings or wall cladding made of metal is shown. However, reinforcement rods are now also left and right in the formations 6

14 inserted or pushed in. For certain designs of the roof covering, it may be sufficient that a reinforcing rod 14 is inserted or pushed in on only one side. These reinforcing rods 14 are almost oval here and correspond in their dimensions and in cross section to the formations 13 of the roof elements, sheet metal plates or

Sheet metal tracks 1. This significantly improves the strength of the structure. Depending on

Dimensioning of the reinforcement rods 14, the mechanical stability can be adjusted as desired in the area of ​​the stable roof or wall substructure by inserting larger or smaller cross-sections beforehand or inserting them later. Thus, safety against negative wind loads is hereditarily improved. The cross sections of the reinforcing rods are preferably matched to the cross sections of the formations 13. This prevents the relatively thin-walled sheet metal roof elements, sheet metal plates or sheet metal strips from deforming over time as a result of the forces acting and from being able to lose the form fit. The reinforcement rods 14 create a non-positive, permanent connection directly in the area of ​​the flat roof skin (roof tile).

3 shows a fastening system for large-area roof coverings or wall cladding made of metal for fastening flat roof elements that can be arranged next to one another,

Sheet metal plates or sheet metal webs 1 in an embodiment with screwing of the pressure plate 9 to a base element head 7 specially designed for screwing. The

The base bar head 7 is specially reinforced and enlarged and a cavity is arranged inside so that the press plates 9, as here, for example, are simply connected to the T-shaped base bar 3 via the center leg 4 with a self-tapping head screw 10. This base bar is in turn fastened with two pairs of self-tapping base screws 8 in the roof or wall substructure, not shown. This advantageous embodiment can be assembled more quickly on site, since the press plates 9 do not have to be pushed in from the side, but can be placed and screwed on from above.

In Fig. 4 is a wider version of a fastening system for large areas

Roof or wall cladding shown. The T-shaped base strip 3 and the press plate 9 are arranged reversed compared to the arrangements described so far, ie the press plate 9 is positioned directly below on the roof or wall substructure inserted reinforcement rods 14, then the T-shaped base strip 3 and is inserted from above and this, including the pressure plate 9 arranged below, is screwed to the roof or wall substructure with a continuous fastening screw 15. To improve the stability of this wide roofing design, two reinforcing rods 14 are again inserted here on the left and right.

Formations 6 of the roof elements, sheet metal plates or sheet metal sheets 1 inserted. Thus, the negative wind loads or the other acting forces cannot cause any deformation of the roof skin and the roof tiles. Separate heirs 17 are arranged on the reinforcement rods 14, which here consist of two materials, which claw into the material of the roof elements, sheet metal plates or sheet metal strips 1 and permanently prevent the reinforcement rods 14 from slipping.

This technical solution described above is primarily used as a fastening system for large-area roof coverings or wall cladding made of metal

Can be used for fastening flat roof elements, sheet metal plates or sheet metal strips that can be arranged next to one another on roof or wall substructures.

List of reference symbols

1 roof elements, sheet metal plates or sheet metal sheets

2 longitudinal ribs

3 T-shaped base bars, base elements

4 middle legs

5 thighs

6 indentations

7 base bar header

8 base screws

9 press plates

10 cap screw

11 sheet metal legs

12 cover strips

13 shapes

14 reinforcement bars

15 continuous fastening screw

16 Seam connection

17 surveys

Claims

1. Fastening system for large-area roof coverings or wall cladding made of metal for fastening flat roof elements, sheet metal panels or that can be arranged next to one another

Sheet metal sheets on roof or wall substructures,

where the roof elements, sheet metal plates or sheet metal sheets are flat, or corrugated or profiled,

with a fastening by means of towering longitudinal ribs, which by upstanding

Sheet metal legs are formed and

the longitudinal strips run parallel or diagonally to one another and are distributed over the roofing or wall cladding,

characterized,

the T-shaped base strips (3) running longitudinally on the roof or wall substructure within the protruding longitudinal ribs (2) are arranged and fastened,

In the T-shaped base strips (3), indentations (6) are formed on the left and right in the middle limb (4) of the base limb (5),

in these recesses (6) formations (13) of the sheet metal legs (11) of the roof elements,

Engage sheet metal plates or sheet metal strips (1),

pressure plates (9) are attached to the middle leg (4),

wherein the pressing plates (9) overlap the formations (13) of the sheet metal legs (11) of the roof elements, sheet metal sheets or sheet metal sheets (1) lying next to one another and

the sheet metal legs (11) along the longitudinal ribs (2) at the end upwards with a

Cover strips (12) are formed closed.

2. Fastening system for large-scale roofing or wall cladding according to claim

1,

characterized,

that the dimensions and shape of the protrusions (13) in the sheet metal legs (11) correspond to the dimensions and shapes of the depressions (6) in the central limb (4) and in the foot limbs (5) of the T-shaped base strips (3).

3. Fastening system for large-area roofing or wall cladding according to claim 1 or 2,

characterized,

that the two indentations (6) in the middle leg (4) and in the foot leg (5)

are designed symmetrically.

4. Fastening system for large-scale roofing or wall cladding according to claim 1, 2 or 3,

characterized,

that the two recesses (6) in the middle limb (4) and in the foot limb (5) are dovetail-shaped or oval-shaped or round in cross-section.

5. Fastening system for large-scale roofing or wall cladding according to claim 1 or 2,

characterized,

that reinforcement rods (14) are additionally arranged in the formations (13) of the sheet metal legs (11).

6. Fastening system for large-area roofing or wall cladding according to claim 5,

characterized,

that the dimensions and the cross-sectional shape of the reinforcement rods (14) on the dimensions and

Cross-sectional shape of the formations (13) of the sheet metal legs (11) and the press plates (9) are matched.

7. Fastening system for large-area roofing or wall cladding according to claim

1,

characterized,

that on the middle leg (4) attached pressure plates (9) at suitable intervals with the

Base bar head (7) are screwed on using cap screws (10).

8. Fastening system for large roof or wall coverings according to claim

1,

characterized,

that the T-shaped base strips (3) alternately or in pairs with the roof or

Wall substructure is fastened using base screws (8).

9. Fastening system for large-scale roofing or wall cladding according to claim

1,

characterized,

that the T-shaped base strips (3) and / or the press plate (9) are designed as profile rails.

10. Fastening system for large-area roofing or wall cladding according to claim 1,

characterized,

that of the cover strip (12) with the sheet metal legs 11 by means of a form-fitting

Seam connection is connected.

11. Fastening system for large-area roofing or wall cladding according to

Claim 1,

characterized,

that the T-shaped base strips (3) with the pressure plates (9) are arranged reversed and both by means of central through fastening screws (15) with the roof or

Wall substructure are attached.

12. Fastening system for large-area roofing or wall cladding according to

Claim 1,

characterized,

that the reinforcement rods (14) made of stainless steel, aluminum, plastics or from

Rubber materials are made.

13. Fastening system for large-area roofing or wall cladding according to

Claim 1 or 12,

characterized,

that the reinforcement rods (14) are formed from different materials

14. Fastening system for large-scale roofing or wall cladding according to claim 1, 12 or 13,

characterized,

that the reinforcement rods (14) are designed with linear, helical or punctiform elevations (17).

15. Fastening system for large-area roofing or wall cladding according to claim 1, 12 or 13,

characterized,

that instead of the inserted reinforcement rods (14) in the formations (6) continuous ropes or ropes are drawn under tension and then arranged relaxed.