SUPPORT STRUCTURE FOR A FRAME FORMWORK PANEL

Abstract

A support structure for a frame formwork panel including a support structure and a formwork skin connected to the support structure, the support structure having two longitudinal edge girders and two transverse edge girders, wherein a corner connecting piece which is welded to the two respective edge girders is provided in at least some of the corner regions of the support structure where a longitudinal edge girder and a transverse edge girder come together.

Claims

1. A support structure for a frame formwork panel comprising a support structure and a formwork skin connected to the support structure, the support structure having two longitudinal edge girders and two transverse edge girders, wherein a corner connecting piece which is welded to the two respective edge girders is provided in at least some of the corner regions of the support structure where a longitudinal edge girder and a transverse edge girder come together.

2. The support structure according to claim 1, wherein the two longitudinal edge girders and the two transverse edge girders each have, on their rear side, a flange projecting toward the center region of the support structure; and for the corner connecting pieces, each welded to the two flanges of the two edge girders coming together at the respective corner of the support structure.

3. The support structure according to claim 2, wherein the respective corner connecting piece rests on the front sides facing the formwork skin side of the support structure or on the rear sides of the two flanges of the two respective edge girders facing away from the formwork skin side of the support structure.

4. The support structure according to claim 1, wherein the respective corner connecting piece is a metal piece with two legs that are perpendicular to each other.

5. The support structure according to claim 2, wherein in at least some of the corners of the support structure, at least one of the flanges of the two edge girders coming together there has a recess which can be welded to the corner connecting piece there.

6. The support structure according to claim 2, wherein in at least some of the corners of the support structure, at least one of the flanges of the two edge girders coming together there has a recess at its edge.

7. The support structure according to claim 2, wherein in at least some of the corners of the support structure, the referenced flange of the two edge girders coming together there comprises miter surfaces; and that a recess is provided on the miter surface of one of the flanges.

8. The support structure according to claim 1, wherein with at least one of the four edge girders, at least one positioning piece is provided at a point located between the two ends of this edge girder, which is welded to this edge girder and that is provided to improve the possibility of attaching a formwork prop there.

9. The support structure according to claim 8, wherein the at least one positioning piece is welded to said flange of this edge girder.

10. The support structure according to claim 1, wherein in at least one of the following weld connection positions a) a welded connection between the longitudinal edge girder and the corner connecting piece; b) a welded connection between the transverse edge girder and the corner connecting piece; c) a welded connection in the region of the miter surfaces of two edge girders coming together there a welded connection is configured as a plug weld connection or as a recess weld at least once.

11. The support structure according to claim 10, wherein in the case of the plug weld connection position(s) a) and b) the plug weld connection is formed with a hole in the flange of the respective edge girder.

12. The support structure according to claim 10, wherein the plug weld connection is formed with an elongated hole.

13. The support structure according to claim 1, wherein at least one of the corner connecting pieces has at least one positioning lug to facilitate the attachment of a formwork prop there.

14. The support structure according to claim 13, wherein at least one of the corner connecting pieces may comprise three positioning lugs, one each in the region of a leg of the corner connecting piece and one in the interior angle region of the two legs of the corner connecting piece.

15. The support structure according to claim 13, wherein at least one of the corner connecting pieces is formed in such a way that it is positioned, with the exception of its at least one positioning lug, behind the flange of the respective edge girder or behind the flanges of the respective two edge girders when facing the rear of the support structure as a whole.

16. The support structure according to claim 1, wherein the longitudinal edge girders and/or the transverse edge girders are extruded profiles made of aluminum.

17. A frame formwork panel, wherein it has a support structure according to one claim 1 and a formwork skin at the front of the support structure that is connected to the support structure.

18. A method for creating a support structure according to claim 1, wherein the longitudinal edge girders, the transverse edge girders, and the at least one corner connecting piece to be welded are placed in a welding device; and that the welded connections between the edge girders and the welded connections between said corner connecting pieces and the edge girders are fashioned from the rear of the support structure.

19. The method according to claim 18, wherein at least some of the welded connections are fashioned by a respective flange hole or through a respective flange recess.

20. A support structure for a frame formwork panel, fashioned with the method according to claim 18.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The invention and more specific embodiments of the invention are explained in more detail below on the basis of an exemplary embodiment shown in the drawings. The figures show the following:

[0034] FIG. 1 a support structure, in a perspective representation and looking obliquely from above onto the front of the support structure;

[0035] FIG. 2 the upper corner of the support structure in FIG. 1, on a larger scale;

[0036] FIG. 3 a top view of the rear of the support structure from FIG. 2, now not in a perspective view;

[0037] FIG. 4 a formwork panel containing a support structure according to FIG. 1, in a perspective representation and looking obliquely from above onto the formwork skin of the formwork panel;

[0038] FIG. 5 the formwork panel or its support structure from FIG. 4, in a perspective representation and looking obliquely from below onto the rear of the support structure or the formwork panel;

[0039] FIG. 6 a corner connecting piece, in a perspective representation and on a larger scale;

[0040] FIG. 7 a positioning piece, in a perspective representation and on a larger scale;

[0041] FIG. 8 a section of the support structure from FIG. 1, showing a corner region, in a perspective representation from obliquely below, with no welding having been performed yet;

[0042] FIG. 9 the same section of the support structure as in FIG. 8 but now after the welding has been performed.

DETAILED DESCRIPTION

[0043] The support structure 2 shown in FIG. 1 is constructed from two longitudinal edge girders 4, two transverse edge girders 6 and seven transverse intermediate girders 8. The transverse edge girders 6 are positioned perpendicular from the longitudinal edge girders 4. The transverse intermediate girders 8 run parallel to the transverse edge girders 6 and extend from one longitudinal edge girder 4 to the other longitudinal edge girder 4.

[0044] FIG. 1 furthermore shows a corner connecting piece 10 and a positioning piece 12. Three further corner connecting pieces 10 and a further positioning piece 12 are covered by the edge girders 4 and 6.

[0045] It can be seen that the longitudinal edge girders 4 and the transverse edge girders 6 each have, at the rear end, a flange 5 and/or 7 projecting towards the center region of the support structure 2.

[0046] FIG. 2 shows more clearly that the corner connecting piece 10 is a metal piece with two legs 14 running perpendicular to one another. At each end of a leg 14, the corner connecting piece 10 has a lug 16, which faces away from the member 18 of the edge girder 4 and/or 6 and projects toward the interior of the support structure 2 in relation to the respective leg 14. The corner connecting piece 10 has a further lug 20 in its interior angle region, from where the two legs 14 originate, which projects towards the interior of the support structure 2 in relation to the legs. The lugs 16 and 20 each project a little above the inner edge 22 of the respective flange 5 and/or 7. The corner connecting piece 10 is shown in FIG. 6 again, now detached from the edge girders 4 and 6.

[0047] The positioning piece 12 shown in FIG. 1 is partially covered by one of the transverse intermediate supports 8. FIG. 7 shows the entire positioning piece. It can be seen that the positioning piece 12 has an angular shape, a first leg 24 of the positioning piece 12 resting on the forward-facing surface of the flange 5 of the respective longitudinal edge girder 4, while the second leg 26 rests on the inside of the member 18 of the respective longitudinal edge girder 4. The first leg 24 has a lug 28 at each of its two ends, a part of which projects beyond the inner edge 22 of the flange 5 toward the interior of the support structure 2. In FIG. 7, the positioning piece 12 is drawn by itself, detached from the support structure 2.

[0048] FIG. 3 illustrates that there are a total of four corner connecting pieces 10 and two positioning pieces 12 for the support structure 2 in the illustrated exemplary embodiment. FIG. 3 shows again how the lugs 16 of the corner connecting pieces 10 and the lug 28 of the positioning pieces 12 project beyond the respective inner edge of the respective longitudinal edge girder 4 and/or the respective transverse edge girder 6.

[0049] FIG. 4 illustrates how a formwork skin 34 is arranged on the front side 30 of the support structure and fastened to the support structure 2. The support structure 2 and the formwork skin 34 together form a formwork panel 40. The rear side of the support structure is designated with the reference number 32.

[0050] FIG. 5 shows that an elongated hole 38 is provided in each of the four corner regions 36 of the support structure 2 in the flanges 5 and 7 of the two edge girders 4 and 6, which come together at the corner region 36. The elongated holes 38 are each present at a location that makes it possible for the corner connecting piece 10, positioned at the front of the respective flange 5 and/or 7, to cover the elongated hole 38 with its leg end region; also refer to FIGS. 8 and 9. A weld seam can be placed in each of these eight elongated holes 38, which substantially fills the respective elongated holes 38 and produces a weld between the respective corner connecting piece 10 and the respective flange 5 or 7.

[0051] Recesses, preferably edge recesses, can be provided in the flanges 5 and 7 instead of the elongated holes 38. Then it is possible to weld in the space formed by the respective recess up to the corner connecting piece 10.

[0052] FIGS. 8 and 9 show that there is a recess 42 in the flanges 5 and/or 7 at the four corners of the support structure 2 at the end of one of the two edge girders 4 and/or 6 that come together there. This recess 42 represents a free space in which a weld seam can be placed, which welds the ends of the two edge girders 4 and 6 coming together there at the flanges 5 and/or 7 and extends in depth to the inner angular region of the respective corner connecting piece 10.

[0053] FIG. 9 illustrates the state after the welding step described has been performed. It shows the weld seams 44 in the elongated holes 38 and the weld seam 46 in the recess 42. It can also be seen that weld seams 48 can additionally be fashioned from the rear side 32 of the support structure 2 at the transition between the lugs 16 and/or 20 and the respective end edge 22 of the respective flanges 5 and/or 7.

[0054] In the illustrated embodiment, the two positioning pieces 12 are not welded to the respective longitudinal edge girder 4 by means of a plug weld. Instead, there is a weld seam on the longitudinal edge 48 of the second leg 46 of the positioning piece 24, which lies against the member 18 of the respective longitudinal edge girder 4 and this member 18.

[0055] To carry out the welds between the edge girders 4 and/or 6 and the corner connecting pieces 10, the edge girders 4 and 6 and the corner connecting pieces 10 are inserted in a welding device rear side up in the correct position. To this purpose, one option is to insert the corner connecting pieces 10 first and to then position the edge girders 4 and 6 above them. Another option is to first insert the edge girders 4 and 6 rear side up and to then insert the corner connecting pieces 10 (rear side up) below the front sides of the flanges 5 and/or 7, with the welding device providing support surfaces for the front sides of the corner connecting pieces 10. The welds described can then be carried out on the one hand between the legs 14 of the corner connecting pieces 10 and the flanges 5 and/or 7 of the edge girders 4 and 6 and on the other hand between the end of the respective flange 5 and/or 7 with the recess 42 and the corner region of the corner connecting piece 10. The welds referenced can be conveniently carried out from above from the rear of the support structure 2. The support structure 2 does not have to be repositioned or turned for these welds.