SK284409B6 - Shuttering panel with edge struts made from a flat extruded section - Google Patents

Abstract

The shuttering panel (1) with edge struts (3) formed from a flat extruded section made of aluminium, an aluminium alloy or similar light metal, projected on its edges approximately at right angles to the shaping part of the shutter on which the edge struts (3) run the stop faces (5) at right angles to the shuttering lining (2). The edge strut (3) has a solid cross in the entire area of the groove (14) or channel and on their side of the channel (14) are the cavities (8) extend within the edge strut (3). The angle space (11) which receives the shuttering lining (2) is located at the edge (10) of the edge struts (3), which is proximate thereto, has bearing against the back of the shuttering lining (2) the integral strip (15) extended in cross section, which strip (15) is continuation of the wall (16) the cavity (8) near the shuttering lining and serves as the fastening flange for the shuttering lining (2).

Description

Technical field

BACKGROUND OF THE INVENTION The invention relates to a formwork panel with extruded extrusions of extruded aluminum, aluminum alloy or the like of light metal, standing at their edges approximately rectangular with respect to the formwork portion, on which end walls run rectangularly with respect to the formwork portion. the end faces of the adjacent formwork panels adjoin indirectly or immediately to the operating position, and clamp-shaped fasteners act on the rear sides of the opposite end faces to clamp adjacent edge bars, the extruded profiles having chambers or similar cavities longitudinally extending in the longitudinal direction , which are closed on all sides by walls, and wherein one edge of the outer partition has an angular space for attaching the formwork molding part, and parallel thereto, from the formwork molding side aside the lying edge is embraced by the clamp in the operative position, whereby the engagement point for the clamp is a groove or groove extending at the rear of the extreme cross-member, which is arranged approximately midway between the edges of the extreme cross-member.

BACKGROUND OF THE INVENTION

This formwork panel is already known from the MEVA GmbH leaflet "ALU STAR", Technische Anleitung, May 1992. The end bars formed as an extruded profile have a relatively large thickness, so that they have to be provided with reasonably large clamps and, due to their hollow cross-section, an additional crossbar must be formed to the internal reinforcement running parallel to the formwork section located in the groove or groove . The large cross-section in itself causes the respective weight, and in particular large clamps with a correspondingly high weight must be used to connect such formwork panels.

Although formwork panels are known from the practice, light metal is used for the production of the outer partitions, the cross-section being relatively flat. In order to have the required stiffnesses known in practice, the extruded cross-sections are likewise extruded with cavities. The known extruded profile has at its rear two engagement points on the clamp, which lies close to both edges of the extruded profile, however close to the edge located on the formwork section of the formwork and nevertheless close to the edge of this extreme partition lying away from it.

In this case, the engagement points extend beyond the cavities present in the extruded profile, so that with a high clamping force there is a risk that the hollow profile of the outer partition consisting of light metal is pushed through. In order to minimize this danger, the clamp extends up to the region of the end wall which is located immediately on the rear side of the formwork section, so that the attachment of the end wall must be located at the front edge of the formwork section. It is therefore necessary to ensure that the fastening means permeable in the region of the formwork part of the formwork do not make the abutment surfaces uneven and, in particular, leak-proof in this region.

The point of engagement of the clamp remote from the formwork section, seen in cross-section, is conical, so that a certain central action occurs, but at the same time a force component is formed across the bounding wall of the cavity of the extruded profile. Thereby, too, there can be no deformation in this region under high locking forces. If such deformation of the extruded profile is to be avoided in the region of its cavity boundary walls, the forces exiting the clamps must be limited, or the walls of the outer partition must be made reasonably strong, which in turn leads to a correspondingly greater weight of the formwork forming part.

While an appropriately wide contact surface of the formwork molding section is formed with an extruded profile relatively wide in cross-section, it must be taken into account that reasonably large clamps are required and formed with an embossed profile in a cross-sectional area at the edge of this extreme partition near the molding section. only a very small bearing surface.

In both cases, the fastening must therefore be introduced into the narrow side of the formwork forming part or, in the case of a wide extruded profile, must be inserted from the side of the formwork forming part facing the concrete. This represents either a less stable attachment or damage to the formwork portion of the formwork facing the concrete.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a formwork panel of the type in which clamping forces can be applied transversely to an edge bar outside the cavity walls, and in particular it can also be coupled to edge bars of flat steel material, in particular Improved attachment of the edge bar on the formwork forming part, relatively small clamps can also be used.

SUMMARY OF THE INVENTION

To accomplish this task, the formwork panel of this kind is characterized in that the end wall has a full cross-section over the entire extent of the groove or groove, that cavities are located on both sides of the groove, and that the angular space retaining the formwork wall has an edge a cross-section, elongated in one piece, close to the formwork section of the formwork, adjoining the rear side of the formwork section adjoining the wall which is a continuation of the boundary wall of the cavity of the close formwork section and serves as a mounting flange for the formwork section.

Because the edge bar is a flat embossed profile, relatively small clamps are sufficient to allow the edge bars of adjacent formwork panels to be captured. In this case, formwork panels whose outer partitions consist of a flat material of steel, as described in DE-A-41 03 775.8, can also be connected. There is thus a wide range of uses. It is advantageous here that the clamp acts on the groove approximately in the middle of the edge bar so that the edge bars can be pressed together.

Since a full cross-section is contemplated in this region and cavities are provided on both sides of the region having a groove or groove, these cavities and their walls are not affected by the clamps in the sense that they could be pushed through. If very large clamping forces are applied, no deformation of the walls delimiting the cavities can be expected. Since the clamp engages at a distance with respect to the formwork form part, there is also sufficient space in the region of the formwork form part to attach the formwork form part to the edge of the formwork, for example at the rear of the formwork form part.

It has the considerable advantage that the angular space retaining the formwork form part has, at the edge of the outermost partition near the formwork form part, an elongated, one-piece cross-section adjoining the rear side of the formwork form part which is a continuation of the boundary wall of the formwork form part. and serves as a mounting flange for the formwork portion. Thus, the bounding wall of the extruded profile cavity running close to the molding part of the formwork, parallel to it and the concrete surface, need not serve as additional support for the clamp and for clamping the clamping forces, since the engagement location for the clamp extends further outwards. Thereby, the wall may have a flange-like continuation which allows a good fit of the rear side of the formwork molding part and the fixing therein considered. The fastening elements are then located outside the mutual contact regions of the extreme partition walls of adjacent formwork panels. Also, the fastening element need not be introduced into the narrow side of the formwork forming part, but may act across the formwork forming part with a corresponding cross-section. Thus, an improved fastening of the formwork part of the formwork without damage is produced, with a possible clamping force when joining the extremity of the adjacent formwork panels.

In the region of the free edge of the edge bar, a solid material section and a reduction in cross-section may be provided next to the cavity arranged there, and the free edge may serve as a stop to the opposite stop on the clamp. As a result, the clamp, especially in the case of the clamping force, can also be used transversely to the formwork part of the formwork, to serve to align the two joined edge bars which engage at the opposite stop on the clamp and can be brought into the same and identical position relative to the clamp.

The thickness of the end wall can be approximately equal in the area of their parallel cavities on both sides of the groove, and the thickness of the cavities and the walls delimiting the cavities can also be approximately equal in particular. This results in an end wall of far unchangeable thickness, which is interrupted only at the rear by a groove or groove that corresponds to the notch at the end wall according to DE-41 03 775 and can also have its shape and effect. It is expedient in this case that if the groove has oblique boundaries, the bevel angle can be, for example, 45 degrees, so that they can interact with a correspondingly oblique clamp projection. This leads to the aforementioned alignment at the opposite stop of the clamp.

Also, the width of the cavities may be approximately equal across the plane formed by the formwork forming portion. Thereafter, cavities of approximately equally thick and equally wide cavities are formed on both sides of the engagement groove having approximately the same flexural strength. In this way, the clamping force can also be distributed uniformly on both sides of the clamping point.

The contact surface of the edge bar may have at least one flat recess between the two edges of the edge bar, so that there is a free space in the middle area when the two edge bars are adjacent. Under the action of the clamping force of the clamp, a possible slight elastic deformation is thereby permitted, which leads to a correspondingly firm compression of the contact surfaces and thus to a good tightness. Eventually, small impurities can be absorbed through the recess or through the space.

DE-OS 41 03 775 provides a connection with an end bar of a flat steel material with an embedded notch in that the groove groove or the like is arranged to engage the clamp at a distance relative to the formwork portion of the formwork or the free edge of the edge bar, in which, in the case of an outer partition formed from a flat material of steel, there are clamps for engagement, and that the width of the outer partition consisting of the flat material is in particular equal to the width of the outer partition formed from the extruded profile. Thereby, the abutment surfaces can also serve to align such edge bars made of different materials. This results in a high load-bearing capacity of the formwork panel, at the same time favorable or low weight, and a trouble-free connection with the frames of the known formwork panels with flat edge bars consisting of steel. In a preferred method, the corresponding matching clamps can be used, i.e. the owner of the formwork with edge formwork panels made of steel flat materials can obtain, as an alternative or additionally, an extrusion formwork formwork panel formed according to the invention, and use it together with other formwork panels. This also allows the owners of older formwork to convert it to new formwork panels without using the existing formwork panels.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will now be described in more detail with reference to the accompanying drawings, in which: FIG. 1 is a partial cross-sectional side view of the outer region of the formwork panel, the upper edge of which shows the cross-section of the extruded profile in accordance with the invention; FIG. 2 shows a cross-sectional view of two adjacent crossbeams according to the invention, for the sake of simplicity, without the formwork forming part, which is pressed by a clamp which acts in the central groove-provided region of the extreme crossbeam where this full cross-section has; 3 shows a representation corresponding to FIG. 2, wherein the extruded cross-section according to the invention is extruded from the extruded profile by means of a clamp with an extruded cross-section of a flat steel material with a groove-shaped notch, whereby for the sake of simplicity only the end-walls and not the complete formwork panels are shown.

DETAILED DESCRIPTION OF THE INVENTION

The overall formwork panel 1 has at its edges approximately rectangular with respect to its formwork part 2 the protruding edge bars 3 of a flat extruded profile of aluminum, aluminum alloy or other light metal. In addition, the formwork part of the formwork between these end walls 3 can be reinforced with further hollow sections 4 or similar structures.

At the end bars 3, the abutting stop surfaces 5 are provided, which are generally rectangular with respect to the form part 2, on which, as a rule, the abutment stop surfaces 5 of the adjacent shuttering panels 3 adjoin in the operating position. Second

On the rear sides 6 of the opposite abutment surfaces 5, according to FIG. 2 and FIG. 3 clamping means 7 in the form of clamps 7 for fastening the adjoining side walls 3 so that the side walls 3 and thus the formwork panels 1 are joined together by frictional contact. According to the exemplary embodiments, the extruded profiles forming the end walls 3 are disposed in the longitudinal direction of the chamber or cavity 8, which are closed on all sides by the walls 9. This leads to a reduction in weight while at the same time having a high rigidity.

One edge 10 of the outer partition 3, which is located in the region of the formwork molding part 2, has an angular space 11 for attaching this formwork molding part 2, one of the angles extending beyond the front surface of the formwork molding part 2 while the other angular arm 12 acts on the rear the side of the formwork section 2 facing away from the concrete surface.

Parallel thereto, from the formwork forming part 2, the side lying edge 13 of the outer partition 3 is in the operating position surrounded by a clamp 7, as shown in FIG. 2 and FIG. Third

The point of engagement of the clamp 7 is a groove 14 or a groove extending on the rear side 6 of the edge bar 3, which is arranged approximately midway between the edges 10 and 13 of the edge bar 3, so that the clamp 7 does not have to reach immediately to the molding section 2. The end wall 3 has a full cross-section in the region of the groove 14, so that the forces coming from the clamp 7 do not deform the cavities 8. These cavities 8 are located on both sides of the groove 14 inside the end wall 3 and also on both sides of the full cross-section. This arrangement is clearly shown in FIG. 1, but also in FIG. 2 and FIG. Third

The angular space 11 retaining the formwork forming part 2 at the edge 10 of the outer partition 3 close to the formwork forming part 2 has an elongated, one-piece cross-section 15 or flange adjoining the rear side of the formwork forming part 2 which is a continuation of the boundary wall 16 of the cavity 8. near the formwork forming part 2 running parallel to the formwork forming part 2 and the surface to be concreted. This crossbar 15 can serve as a fastening flange for the formwork molding part 2, which is highlighted by a dotted line indicating the screw 17. This creates enough space for the fastening element of almost any cross-section, so that much better attachment is possible than if this had to be In this case, the entire end wall 3 is further reinforced by this partition 15.

In the region of the free edge 13 of the end wall 3, next to the cavity 8 there is a solid material section 20 and a cross-section reduction 21 which can be captured by the screw 17 at the corresponding opposite stop 22, thus serving as a stop for aligning is seen in FIG. 2. According to FIG. 1 and FIG. 2, the abutment or contact surface 5 of the end wall 3 between the two edges 10 and 13 has a flat recess 23, so that there is a free space in this central region when two end walls 3 are adjacent. This space or recess 23 overlaps the regions of the cavities 8, so that the actual contact and the force transmission are always effected by the side of the cavities 8. Thus, reasonably strong compressive forces can be transmitted and absorbed in this region.

In this case, the thickness of the end wall 3 in the region of its parallel cavity 8 is approximately equal on both sides of the groove 14, and the thickness of the cavities 8 and the walls of the boundary cavity 8 is also approximately equal, so that thus the same compressive and bending strengths are the same. Also, the widths of the cavities 8 across the plane formed by the formwork forming part 2 are approximately the same.

The side surface 24 of the groove 14 is shown in FIG. 1 and FIG. 2 is oblique and runs at an angle of 45 degrees - seen in cross section - against the abutment surface 5 of the end wall 3. This can be acted upon by a suitably formed projection 25 of the terminal 7 and cause a force component also in the direction of the opposite stop 22 on the terminal 7. mentioned that the clamp 7 affects the end bars 3 only by its projections 25 inside the groove 14, and also in the clamped position according to FIG. 2 between the clamp jaws 26 and the rear side of the outer rungs 3, only a minimal space can remain. However, although clamping forces are also introduced and transferred, the cavities 8 between them cannot be pushed, since on both sides of these cavities 8 located between the clamp jaws 26, a sufficient cross-section of the support now provides sufficient support.

The groove 14 or groove can be operated by any clamp, for example according to DE-A-41 03 775 or - as shown in the embodiment - according to DE-42 36 070. It is assumed that the groove 14 is for engagement of this clamp 7 arranged at a distance with respect to the formwork molding part 2, possibly against the free edge 13 of the outer partition 3, while at the outer partition 3a of FIG. 3 of the flat steel material, a notch 14a for engaging the clamp 7 is located. The width of the edge bar 3a consisting of the flat material is equal to the width of the edge bar 3 formed from the extruded profile so that the two different edge bars 3 and 3a can be together according to FIG. 3 can be fastened without any problems by clamp 7. As a result, the formwork panels with such different edge bars can be easily combined. Thus, it has been possible to provide an extruded light metal bar made by extrusion, which allows good clamping of the clamp 7 at a location where the cavities 8 cannot be damaged by this compressive force of the clamp 7, whereby However, it can still be combined with an already existing and existing end wall so that the same clamp 7 can fasten the two different end walls 3 and 3a together. Thereby, the formwork panels according to an exemplary embodiment can be combined with such formwork panels having edge bars 3a.

The shuttering panel 1 has edge bars 3 of flat extruded aluminum, aluminum alloy or other light metal and thus low weight and high rigidity. The engagement points for the clamps 7 for fastening such end bars 3 of the adjacent formwork panels 1 to one another are spaced with respect to the formwork molding part 2 at the point where the end bars 3 have a full cross-section and the cavities 8 located on both sides of this engagement point. they are not jeopardized by deformation by the compressive force of the fastening clamp 7. In this case, the groove 14 or groove is considered as engagement for the clamp so that this point of engagement is also actually used. In this way, the same clamp 7 can also be used, which can also be used on the edge bars of the flat material provided with a central notch, thus the formwork panels with such edge bars of different materials can also be combined with one another.

Claims (7)

PATENT CLAIMS A formwork panel (1) with end bars (3) of a flat extruded profile of aluminum, aluminum alloy or the like light metal, standing at their edges approximately rectangular with respect to the formwork part of the formwork, on which end bars (3) run rectangularly with respect to the formwork (2) of the shuttering surface (5) on which, in the operating position, the stop surfaces (5) of adjacent edge panels (3) of adjacent shuttering panels adjoin indirectly or immediately, and act on the rear sides (6) of opposite stop surfaces (5) clamping means (7) interconnecting adjacent sidewalls (3), the extruded profiles having chambers or similar cavities (8) positioned in the longitudinal direction of the sidewalls, which are closed on all sides by walls, and one edge (10) ) the end wall (3) has an angular space (11) for connecting the form 4 of the formwork part (2), The edge (13) lying parallel to the formwork section (2) is embraced by the clamp (7) in the operating position, the point of engagement for the clamp (7) being on the rear side (6) of the end wall (3) (14) or a groove which is disposed approximately midway between the edges (10, 13) of the outer bar (3), characterized in that the outer bar (3) has a full cross-section over the entire area of the groove (14) or groove, and on both sides of the groove (14), cavities (8) are located inside the end wall (3), the angular space (11) receiving the formwork section (2) having an edge form (2) close to the formwork section (2) of the end wall (3) a cross-section, elongated in one piece, on the rear side of the formwork portion (2) of a formwork adjoining a partition (15) which is a continuation of the boundary wall (16) of the cavity (8) near the formwork formwork (2) and molding part (2) formwork. The formwork panel according to claim 1, characterized in that, in the region of the free edge (13) of the extreme partition (3), next to the cavity (8) arranged there, there is a solid material section (20) and a cross sectional reduction (21). the free edge is a stop for the opposite stop (22) on the clamp (7). The formwork panel according to claim 1 or 2, characterized in that the thickness of the end wall (3) is the same in the area of their parallel cavities (8) on both sides of the groove (14) and the thickness of the cavities (8) and the walls the cavity (8) bounding is also the same. Formwork panel according to claims 1 to 3, characterized in that the width of the cavities (8) is the same across the plane formed by the formwork forming part (2). Formwork panel according to one of Claims 1 to 4, characterized in that the stop or contact surface (5) of the end wall (3) has at least one flat recess (23) between its two edges (10, 13) to create a free space in this in the middle area, adjacent to each other two edge partitions (3). The shuttering panel according to claim 1 to 5, characterized in that the groove (14) or the like clamp engagement structure (7) is spaced from the formwork forming part (2), optionally against the free edge (13) of the extreme partition (3). whereas, in the case of an outer partition (3a) formed of flat steel material, the clamps (7) of the notches (14a) are engaged, the width of the outer partition (3a) consisting of the flat material being particularly equal to the width of the outer partition (3) from the extruded profile. Formwork panel according to claims 1 to 6, characterized in that the side surface (24) of the groove (14) extends at an angle of approximately 45 ° with respect to the stop surface (5) or with respect to the rear side (6) of the end wall (3). degrees.