CH714812A2 - Abschalwinkel and an extension element for a Abschalwinkel. - Google Patents

Abstract

The invention relates to a Abschalwinkel and an extension element for a Abschalwinkel. For the creation of corners on Deckenrandabschalungen two or more extension elements (1) with three receptacles (3, 5, 7) are pushed one above the other at a known Abschalwinkel. In the two outer receptacles (3, 5) footless support legs can be inserted. The conventional Abschalwinkel can now simultaneously position and hold two arranged at right angles to each other Abschalplatten.

Description

CH 714 812 A2

Description of the invention is a shuttering angle according to the preamble of claim 1 and an extension element for a shuttering angle according to the preamble of claim 3.

Formwork angles are used in huge numbers on construction sites when creating ceilings. They serve to hold the formwork panels positioned on the slab formwork and thereby form a slab edge formwork. In most cases, the shuttering angles consist of two profiles or profile tubes made of metal that are connected at right angles. These include a leg, to which spacers are attached, to keep the leg spaced from the surface of the cast ceiling. The adjoining support leg, which is at a right angle to the foot leg, also includes spacers in order to create a distance from the surface of the ceiling edge. Mostly, the support leg consists of a rectangular tube, the cross section of which is dimensioned such that a railing post can be inserted into the rectangular tube or a clamping tool can be inserted, with which the formwork panel can be pressed onto the support leg from the outside, to the forces of the liquid concrete mass to be able to take over until it solidifies.

The shuttering angle can also be made of plastic or a combination of plastic and metal. They are manufactured in large quantities and make it easier to build or form the edges of ceilings.

The previous use of the shuttering angles was essentially limited to the creation of straight ceiling edges. In the area of the corners the known ceiling edge shuttering angles can only be used to a limited extent. The shuttering angles are offset there on one side at a distance from the length of the leg of the foot to the corners forming abutting formwork panels and in the area of the formwork panels abutting at right angles by other means, e.g. nailed with additional boards to create a firm connection. This is expensive in terms of time and costs. In addition, the corner does not withstand the concrete pressure sufficiently, which often pushes out the ceiling edge in this area. The pressed area must then be sharpened and the front of the ceiling plastered again. Such shuttering angles are described, for example, in the following protective rights: EP 2 977 526 B1 and EP 2 678 493 B1.

An object of the present invention is to provide a device with which corner formwork for ceiling edges can be created in a simple, inexpensive and precise manner.

This object is achieved by a shuttering angle according to the features of claim 1 and by an extension element for a conventional or special shuttering angle manufactured for the creation of corners according to the features of claim 3. Advantageous embodiments of the extension element are described in the dependent claims.

With one or more extension elements according to the invention, an advantageous device for formwork in the corners of ceilings is generated without having to make improvisations with locally made solutions. By attaching at least one extension element to the support leg of a conventional shuttering angle, which is attached to the ceiling formwork at an angle between the two ceiling edges to be created, two auxiliary support legs made of profiled tubes can be made at an angle of e.g. Installed and held at 90 ° to each other. Formwork panels that run at right angles can then be attached and installed on the two support legs or profile tubes, which are at an angle of 90 ° to the support leg of the shuttering angle. These can be attached to the support legs via nail loops in a known manner and / or by means of clamping tools inserted into the two footless support legs, e.g. UNI-FIX clamps from Albanese. No additional fasteners and the like, which are not already present on the construction site, are necessary for this. The extension element can be placed on site on a shuttering bracket attached to the slab formwork and connected to the additional support legs or profile pipes. It is also possible to assemble the necessary formwork angles forming the corners outside the construction site, for example on the storage area, and then to fasten them as a whole to the ceiling formwork. Depending on the height or thickness of the ceiling to be cast, two or three extension elements are used on appropriately dimensioned support legs.

The extension elements are inexpensive to manufacture from a sheet metal or strip-shaped sheet. In a first embodiment of the extension element, its circumferential contour is punched out of the sheet metal plate or the sheet metal strip and, in the same punching / lifting process, the punch press can already be provided with folds for the tabs and the flanging. Of course, with a follow-up tool, the outer contour and the necessary recesses of the base body, which are located within the contour, can first be punched out and, in the subsequent step, the folding and / or flanging can take place. The extension element to be placed horizontally or parallel to the slab formwork can also have ribs and / or flanges to increase the strength while using less material, which leads to an increase in the bending strength. The folding and flap formation to produce a certain tubular section, which is pushed onto the supporting leg, is preferably not carried out with the formation of a right angle, but rather an angle deviating by a few degrees from the right angle. As a result, the flaps that form the pipe or a guide act as springs, so that the extension elements are not displaced along the support legs even by vibrations, such as occur when the concrete mass vibrates. Additional recesses with or without

CH 714 812 A2 all-round bunch in the slab material allows the liquid concrete to flow through if it is fed from above via pipes or buckets to the slab formwork.

In a further embodiment of the extension element, a band-shaped sheet metal strip is initially produced and provided with some tabs protruding from the edge of the band. This is followed by several bending operations with which three rectangular receptacles are formed from the band-shaped body. The previously U-shaped three receptacles are formed with the tabs into closed rectangular receptacles. The flaps can also be folded over after mounting on the support legs. These extension elements can be produced with a relatively low expenditure of material, but in contrast to the first exemplary embodiment, their multi-stage reshaping is more complex and must be carried out in at least three work steps. In order to achieve a clamping effect of the receptacles on the support legs used later, the two legs of the U-shaped sections are not formed in parallel, but tapering to a few degrees.

The use of the second embodiment corresponds to that of the first embodiment in which the extension elements are pushed onto the support leg of the shuttering angle and then at a right angle to it two further support legs, i.e. Profile tubes are inserted into the corresponding receptacles. These extension elements can also be used to create ceiling edge formwork on site or outside the construction site.

To avoid rust and the like, the extension elements can have a galvanized surface.

Of course, the two versions of expansion elements described could also be made of plastic.

In a further embodiment, not shown, of the shuttering angle, laterally projecting tabs or rods can be welded to the support arm of the shuttering angle, at the end of which plastic elements 33 are fastened with nail loops 37 and are arranged at the desired angle, usually at a right angle, to the support arm of the shuttering angle ,

In a further embodiment of the extension angle for shuttering angle made of plastic, at least the first receptacle is made larger in cross section so that it can be pushed onto the support leg. With this configuration of the extension angle, the shuttering angle coming below can be rotated by 180 °, i.e. with its knees removed from the support leg of the shuttering bracket. Two jaws of the receptacle grip over the foot leg and thus stabilize the two additional support legs spaced apart from the shuttering angle. The upper extension bracket is mounted on the support leg as in the previous examples.

The extension elements made of plastic allow use on shuttering angles made of plastic. The extension elements can be placed on the foot of the shuttering bracket and the additional support legs are then inserted into the sleeves. The sleeves are closed at the bottom so that no rust stains can appear on the underside of the ceiling to be created. The production of such extension elements is relatively inexpensive and, in particular, the displacement of these extension elements is simple and possible at a conventional shuttering angle without the need for noise.

In order to make it easy to install the extension elements even with steel shuttering angles, the support legs of the shuttering angle are no longer guided through them in a receptacle, but rather the extension element is rotated by 180 ° in the horizontal from below to the foot leg of the shuttering angle or pushed the shut-off angle foot leg is inserted into the extension element.

[0013] The invention is explained in more detail on the basis of illustrated exemplary embodiments. It shows:

1 is a perspective view of the extension element with the tab directed downward,

2 shows a perspective view of the extension element with the tabs pointing upwards,

3 shows a development of the extension element in perspective,

4 two extension elements attached to a shuttering bracket and two adjacent profile tubes as support legs,

5 a section of a ceiling edge formwork with a formwork angle used in the corner and expanded by two extension elements,

6 is a plan view of the illustration in FIG. 5,

7 is a perspective view of an extension element in perspective, corner side,

8 shows the extension element in FIG. 7 from a different point of view,

9 is a plan view of the extension element according to FIGS. 7 and 8,

CH 714 812 A2

10 is a development of the extension element,

11 shows a side view of a shuttering angle with extension elements of the second exemplary embodiment,

12 is a side view of a shuttering angle with a clamping tool attached, spaced apart from the shuttering angle,

13 is a side view of a shuttering angle with the clamping device pull on, shuttering angle moved up,

Fig. 14 is a perspective view of the formwork plate side of the clamping tool

15 is a perspective view of an extension element for shuttering angles made of plastic seen from above,

16 is a perspective view of an extension element for shuttering angles made of plastic seen from below,

17 shows a further embodiment of the extension element made of sheet metal,

18 the extension element according to FIG. 17 arranged at a shuttering angle between two formwork panels,

19 the extension element according to FIGS. 15 and 16 arranged at a shuttering angle between two formwork panels,

20 shows a further embodiment of the extension element and

Fig. 21, the extension element used on a formwork bracket made of plastic.

In the perspective view of the extension element 1, three receptacles 3, 5, 1 for passing profile tubes or support legs 23, 35 are visible. The first receptacle 3 in the middle is arranged in the knee of the V-shaped sheet metal strip 9. The two other receptacles 5, 7 are located in the region of the two ends of the metal strip 9. All three receptacles 3, 5, 7 have a rectangular, preferably square, cross section. Triangular tabs 11 are shown on the four side edges of the receptacles 3, 57, the contours of which are punched out of the sheet metal strip 9 and then bent upwards. Alternatively, instead of four triangular tabs 11, two rectangular tabs 11 lying opposite one another can also be formed. The mutually facing inner surfaces of the tabs 11 are not exactly perpendicular to the surface of the sheet metal strip 9, but are deflected with their tips 13 by a few angular degrees to the center of the respective receptacles 3, 5, 7. In other words, the mutual spacing of the tips 13 is smaller than the mutual spacing of the triangular tabs 11 at the base thereof in the transition from the tab 11 to the remaining sheet metal strip 9 which has been left unchanged. Openings 15 can be formed between the three receptacles 3, 5, 7 whose edges 17 are preferably folded like a flange. If such edges 17 are formed, they serve to stiffen the surrounding flat area of the sheet-metal strip 9 between the tabs 11. Optionally, tabs 19 can be formed in the area of the two outer receptacles 5, 7, in the center of which a hole 21 is made. The tabs 19 are preferably in the plane of the metal strips 9.

1 shows the extension element 1 as it leaves the punching and bending machine during manufacture, that is to say the tabs 11 are bent downward, after the outside contour and the contours of the tabs 11 have been punched, for example, and then directly or in an additional stroke, the tabs 11 and the edges 17 have been bent or bent downwards. 2, the extension element 1 is shown in a ready-to-install position. Thanks to the rounded edges in the transition between the sheet metal strips 9 and the tabs 11, the extension element 1 can first be easily pushed onto the support leg 23 of a shuttering angle. A shuttering angle 25, which is well known from the prior art, comprises, in addition to the supporting leg 23, a foot leg 27. The two legs 23, 27 are connected at right angles to one another, e.g. welded. The foot leg 27 is secured by one or more spacers 29, e.g. made of plastic or a cement material spaced from a bottom surface 31, e.g. the ceiling formwork. A plastic element is also attached to the lower end of the support leg 23 and holds the support leg 23 at a distance from the bottom surface 31.

In the illustrated first example in FIG. 4, two extension elements 1 are plugged onto the support leg 23 at a distance from one another. The first receptacle 3 wraps around the tube which is rectangular in the example and which forms the support leg 23. The extension element 1 is held on the support leg 23 with the tab 11.

In the two receptacles 5, 7 of the extension element 1, a footless support leg 35 is held in the form of a rectangular profile tube. The footless support legs 35 also preferably have plastic elements 33 at their lower ends.

CH 714 812 A2

On the support leg 23 of the shuttering angle 25 and on the two footless support legs 35, nail loops 37 are usually, but not necessarily, attached to sleeves 39 that can be pushed on. The nail loops 37 are tubular elements which are connected to the sleeve 39. In addition, support wings 41 can also be formed, the front ends of which lie in a common plane with the front ends of the nail loops 37 and are intended to lie or rest as a support or spacer for the formwork boards 43 which form the outer formwork of the ceiling edge. In the perspective view of the shuttering angle 25 in FIG. 5, two footless support legs 35 held by extension elements 1 are visible. Furthermore, it can be clearly seen from this figure that after the shuttering bracket 23 has been attached to its leg 27, for example with nails (nails not shown), the shuttering boards 43 or shuttering panels can be placed on the nail loops 37 on the shuttering 31 for the ceiling to be cast and be supported by them. 37 nails can be temporarily hammered into the formwork boards 43 through the nail loops. In order to hold the shuttering boards 43 with the support legs 23, 35 in the corners of the ceiling edge formwork and further shuttering angles 29 along the rectilinear ceiling edges against the pressure of the poured liquid concrete, conventional formwork clamps 51 are inserted into the support legs 23 and / or in a conventional manner from above 35 inserted and with their clampable jaws 53 the formwork boards 43 pressed from the outside onto the nail loops 37 (see FIGS. 12-14).

After the concrete for the ceiling has hardened, the formwork boards 43 and the formwork clamps 51 are removed and the support legs 23, 35 are then used to insert guardrail posts.

In a further embodiment of the extension element 1, the sheet metal strip 9 forming the extension element 1 does not lie in a horizontal plane (in the assembled state), but the sheet metal strip 9 is angled several times by approximately 90 °. In the central area, the first receptacle 3 is formed by two wall sections 3 'and 3.

In order to achieve a closed or approximately closed U-shaped cross section, a section 43 of the sheet metal strip 9 is folded over at the two lateral regions 3 ', 3 into the cross-sectional space between the regions 3', 3. The same takes place on the externally formed receptacles 5, 7. As in the first exemplary embodiment, tabs 19 with a hole 21 can also be formed in this embodiment. The holes 47 serve to fasten the extension element 1 with a nail.

11 shows, analogously to FIGS. 4 and 5 of the first exemplary embodiment, the arrangement of the extension elements 1 on the support leg 23 of a shut-off bracket 25 and the footless support legs 35 held by the pushed-on extension elements 1. First, the extension elements 1 are pushed onto the support leg 23 of the release bracket 25 and then the two footless support legs 35 can also be inserted into the receptacles 5 and 7, respectively. This shuttering angle 25 provided with extension elements 1 is displaced in the same way as in the first exemplary embodiment with the foot leg 27.

For a better understanding of the functioning of the shuttering angle 25 and support leg 35 equipped with extension elements 1, a shuttering clamp 51 is described in FIGS. 12-14 and attached to a shuttering angle 25. The formwork clamps 51 are pushed onto the two support legs 35 arranged on the side of the support leg 23 of the shuttering bracket 25 from above. The formwork clamps 51 comprise a holding leg 55 which runs vertically in the figures and an arm 57 which projects at right angles thereon, to the end of which is attached a sliding rail 59 which extends at an acute angle to the vertical. A pressure plate 61 lying parallel to the holding leg 55 is slidably mounted on this. The pressure plate 61 can be displaced via a sliding tube 63 which includes the sliding rail 59 and can thus be moved towards the supporting leg 35 or away from it.

In the initial position according to FIG. 12, the distance b between the support leg 35 and the pressure plate 61 is greater than in FIG. 13.

If a formwork plate 43 is inserted between the support leg 35 and the pressure plate 61, then the formwork plate 43 is clamped from the outside to the nail loops 37 by pushing the pressure plate 61 downwards. With two formwork clamps 51, the formwork plates 43 can be positioned accurately in the corner of a ceiling edge formwork arranged to absorb the pressure of the liquid concrete.

The expansion elements 1 shown in FIGS. 15 and 16 can also be used on shuttering angles made of plastic. Plastic angles generally have larger foot legs 27 and support legs 23. In addition, the nail loops are already part of the support leg 23 on the shuttering angles made of plastic and can therefore not be removed for pushing on the extension elements 1. The extension elements described below, which are also made of plastic, consequently replace the lowest-lying extension element 1. The extension elements made of plastic have an angular shape, with essentially known sleeves 39 being formed at the ends of the two angles, into which the lower end of the additional support legs 35, usually profile tubes, can be inserted and come to rest at a distance from the ceiling formwork through the sleeve 39 and consequently rust-through of concrete is prevented. The two sleeves 39 are connected to one another by an angle 65 made of plastic. Below the angle 65, two parallel plates 67 are formed. The distance between the plates 67 corresponds to the width of a conventional foot leg 27 of a shut-off angle 25. The extension element 1 according to FIGS. 15 and 16, as can be seen in FIG. 19, is placed on the foot leg 27 with the plates 67 facing downward. An expansion element 1 according to FIGS. 1 to 3 is pushed onto the support leg 23 from above and the two additional support legs 35 are inserted into the receptacles 5 and 7 of the support leg 23. The mirror-image arranged lower extension element 1 together with the extension element 1 arranged above results in a very rigid connection on which the

CH 714 812 A2

Formwork clamps 51 can be kept inserted from above and press the two formwork panels 43 firmly against the nail loops 37. The cohesion of the two formwork panels 43 in the area of the corner is thus optimal and opening of the contact point between the two formwork boards can be avoided (FIG. 19).

17, which is made of steel like the first-mentioned extension elements, has in the knee of the two mutually perpendicular legs with the receptacles 7 and 5, a U-shaped holding element 69, which is from the plane of the Recordings 5, 7 extends downwards and is intended to wrap around the foot leg 27, as shown in FIG. 18, below. This configuration also makes it possible to create a very rigid device in order to produce a corner formwork.

Fig. 20 shows a further embodiment of an extension element, in which the first exception 3 is no longer surrounded by four triangular tabs 11, but the material bent down between the rectangular frame forms two rectangular tabs which, like that triangular ones are not exactly parallel to each other, but their free edges are somewhat closer together than at the root of the lobes. As a result, a resilient clamping effect is achieved when the support leg 23 is inserted into the first exception 3. 21 it can be seen that the two folded-over rectangular tabs 11 clasp the foot leg 27 of the shuttering angle 25 from above and hold the widening angle 1. Carrying legs 35 are in turn inserted into the two receptacles 5 and 7 located at the ends of the legs and are held at the top by an expansion element 1 according to FIGS. 1 to 3.

Legend of the Reference Numbers [0020]

I extension element first shot

admission

admission

metal strip

II rag

sharpen

opening

edge

tabs

hole

supporting leg

Stopend

foot leg

spacer

slabs

Plastic element

supporting leg

nail loop

shell

support wings

Forming board

cloth

CH 714 812 A2

hole

formwork clamp

to bake

holding leg

poor

slide rail

pressure plate

sliding tube

angle

plates

retaining element

claims

Claims (13)

1. shuttering angle (25) for positioning and supporting formwork panels (43) in the manufacture of ceiling edge formwork in the area of two angularly abutting ceiling edges, the shuttering angle (25) a leg (27) for laying on a ceiling formwork (31) and one The first support leg (23) with nail loops (37) arranged perpendicular to it and connected to the foot leg (27), characterized in that the further support nail loops (37) are spaced apart and at a horizontal distance from the first support leg (23) and angled are aligned with each other. 2. shuttering angle according to claim 1, characterized in that the nail loops (37) are formed on second support legs (35) arranged parallel to the first support leg (23) and / or on the first support leg (23) and essentially perpendicular to it protruding arms are attached. 3. Extension element for a shuttering angle for positioning and supporting formwork panels (43) in the manufacture of ceiling edge formwork in the area of two angularly abutting ceiling edges, the shuttering angle (25) having a leg (27) for laying on a ceiling shuttering (31) and one The first support leg (23) with nail loops (37) arranged perpendicular to it and connected to the foot leg (27), characterized in that second support legs (35) are provided for fastening the nail loops (37) and are connected to an extension element (1) The extension element (1) comprises a first, centrally arranged receptacle (3) for the first support leg (23) and two second receptacles (5, 7) formed on the side of the first receptacle (3), which are arranged with respect to the first receptacle (3 ) are arranged at an angle to each other and are designed as second support legs (35) for inserting profile tubes. 4. Extension element according to claim 3, characterized in that the first receptacle (3) and the two second receptacles (5, 7) are arranged on an angular sheet metal plate (9) and are held in position by the latter. 5. Extension element according to one of the two claims 3 or 4, characterized in that the receptacles (5, 7) for the second support legs (23, 35) have a rectangular or square cross section. 6. Extension element according to one of claims 4 or 5, characterized in that the receptacles (3, 5, 7) are formed by punchings in the sheet metal plate (9). 7. Extension element according to claim 6, characterized in that the edges of the recesses for the recesses (3, 5, 7) are formed by crimping the sheet metal area punched out for the receiving cross section. 8. Extension element according to claim 7, characterized in that the opened areas of the sheet (9) form tabs (11) and are inclined at an acute angle to the center of the receptacles (3, 5, 7). 9. Extension element according to claim 8, characterized in that the tabs (11) lie at an acute angle to the surface of the sheet metal plate (9). 10. Extension element according to one of claims 3 to 9, characterized in that between the receptacles (3, 5, 7) openings (15) in the sheet metal plate (9) are arranged. 11. Extension element according to one of claims 4 or 5, characterized in that the receptacles (3, 5, 7) side walls (3 ', 3, 5', 5, 7 ', 7) have, which by a strip-shaped sheet metal plate ( 9) are formed, whereby CH 714 812 A2 the receptacles (3, 5, 7) are formed by folding the sheet metal strip several times to form three frame-shaped multiple corners. 12. Extension element according to claim 11, characterized in that the receptacles (3, 5, 7) are formed by three U-shaped sections which are connected to one another by two obtuse-angled connecting pieces, the three receptacles (3, 5, 7) are formed from sheet metal sections at right angles to one another. 13. Extension element according to claim 3, characterized in that the extension element (1) comprises an angular plate, on the two legs of which receptacles (5, 7) are formed and wherein the first receptacle for insertion on the leg (27) of a shuttering angle (25) is formed and that the two second receptacles (5, 7) are cup-shaped and act as a support leg (35) for inserting the lower ends of profile tubes.