EP2458111A2 - Ceiling boarding element and ceiling boarding system - Google Patents

Abstract

The drophead (10) has a lowerable support (12) provided for a ceiling framework panel and pivotable from a vertical projection of the framework panel around a horizontal pivot axis in such a manner that the framework panel is lowerable at the support. The support has a back taper (14) acting in a vertical direction, and another support (18) is lowerable around a distance that is different from a lowering distance of the former support. The support is made from metal or fiber-reinforced plastic, and a head plate (22) is provided as a stop for the framework panel. An independent claim is also included for a ceiling framework system comprising a drophead.

Description

TECHNICAL AREA

The invention relates to a slab formwork element and a slab formwork system.

In the field of construction, it is customary, especially in the construction of concrete floors, to place on columns a grid of carriers on which turn formwork panels are placed to pour after delineation of the ceiling edges of the concrete floor. In this case, special heads for props are also known between which formwork beams or elements can be attached.

STATE OF THE ART

For example, the DE 33 16 557 C1 a slab formwork system with a drop head and a drop piece, which can perform a certain tilting movement.

From the DE 10 2004 004 883 A1 is a Deckenschalungspaneel in which a support means at the end of the panel is so adjustable in position that the maximum dimension between two such support means can be reduced, so that the panel for stripping between the stationary columns can be removed.

The GB 337 111 A relates to the preamble of claim 1, and the DE 42 11 136 A1 relates to a drop head of a slab formwork with levers that swing out by their own weight and engage in openings of profiles.

The DE 101 35 664 B4 relates to a support for slab formwork with a drop head, which is divided into two parts, wherein the two parts are mounted differently lowered on the support, and a part is rotatable about the support.

PRESENTATION OF THE INVENTION

The invention has for its object to provide a slab formwork element and provided therewith a ceiling formwork system available, in which the slab formwork element can be arranged very safe and / or necessary in the context of switching on and Ausschalens work can be performed safely and efficiently.

The solution to this problem is the one by the ceiling formwork element described in claim 1. Accordingly, this has at least one support with at least one undercut, which is suitable to cooperate with an undercut on a support head, in particular a drop head.

Advantageously, thus provided on at least one support undercut with an undercut on at least one slab formwork element cooperate such that the slab formwork element is on the one hand secured against unwanted lifting and on the other hand when stripping of the undercut of the support can be disengaged, and finally can be removed past the pivoted bearing.

Preferred developments are described in the further claims.

In order to achieve a backup in all horizontal directions, it is currently preferred for at least one support, that this is sleeve-shaped. Such a shape forms a substantially vertically extending cavity into which a substantially vertical projection or pin of a counter-support, for example on a support, can be inserted. In particular, the cavity described is limited to at least three, preferably four sides in the horizontal direction and / or provided with a rounded contour, so that a particularly good interaction with round pins, such as a column head, is possible.

Preferably, the ceiling formwork element described herein further comprises at least one support described in more detail below or is such a support. However, the features described below with reference to a carrier can also be provided in another way on the formwork element according to the invention, in particular -paneel. It is preferred that this is provided at least at one end with at least two directed in the same (usually vertical) direction supports, which are arranged at different vertical heights that the carrier on at least two different horizontal levels on other elements of a slab formwork system can be placed , In this consideration, it is assumed that the formwork support is arranged substantially horizontally in use, but it is also conceivable that the use position of the formwork support is vertical, and thus that different positions are possible in the lateral direction. In this respect, the formwork support described herein is not necessarily always provided as a slab formwork support, but it can be used as any formwork support. In any case, directed in the same direction, at least two supports ensure that the formwork support is particularly versatile.

If this can be nailed, for example by means of a suitable wood insert, the supports directed in the same direction have the advantage that this nailability applies to the use on the two (or more) horizontal levels. The supports provided on at least two vertical heights can be used particularly well if a grid of several carriers is to be formed. By using the "higher" support, several formwork beams can be arranged at a first, lower level. Also, by using the higher support can be further formwork support, for example, transverse to the formwork supports mentioned above hang on this, and are then at the same vertical level, such as formwork beams, which are used immediately using their "lower" support, and thus are "higher". In particular, the slab formwork carrier can thereby be used as a "transitional support", for example to areas in which another slab formwork system is used, or as an "edge support", for example to existing walls, in order to produce the "correct" level of formwork.

It has been found to be advantageous for the handling of the slab formwork carrier when the higher support is arranged closer to the end of the slab formwork support, as the lower support. In other words, the "height" of the slab formwork carrier decreases towards the end, which is accompanied by the above-described change in shape of the support along its length, and moreover provides a simple procedure for laying on.

As materials for at least one support whose training at least partially made of metal, especially steel and / or a plastic, in particular fiber-reinforced, proved to be favorable in initial experiments. Particular advantages in terms of manageability, and in particular with regard to the flexible use are given in those preferred embodiments, in which below a first support a second support and can be folded away. In this embodiment, the length of the carrier does not change when using the various supports, so that favorable properties are achieved. In particular, the two supports in the closed state of the lower support are substantially aligned with each other.

Preferably, the ceiling formwork element described herein further comprises at least one support described in more detail below or is such a support. This preferably consists at least partially of metal, in particular steel, but may be any other suitable material, such as. As wood, aluminum or fiber reinforced plastic. In the case of steel beams, however, a particular challenge is to be able to continue to manipulate the carrier or a plurality of such carriers, which may be integrated into a formwork element. In other words, the carrier should save as much weight as possible while at the same time meeting the requirements imposed on the strength. This is achieved by one or more of the measures described below.

On the one hand, the carrier may be curved at least slightly in the direction of the concrete to be filled. This essentially means a certain "preload" in the direction of the load, which results in that the load can be absorbed particularly well. This is possible in particular without the risk of deflection against the curvature direction, which would lead to unwanted bulges or bulges at the bottom in the finished concrete pavement. The described curvature may be formed as a uniform curvature and may be of the order of a few Millimeters, depending on the length of the carrier, for example, about 4 millimeters.

On the other hand, the slab formwork support can have openings whose size and / or shape and / or orientation and / or distribution changes over the length of the support such that the support is less weakened in a middle area than in at least one end area. In this regard, it should be noted that such a support is usually mounted at its ends, and in its course a uniform line load is applied. This results in a load in middle areas, which is greater than in end areas. This is taken into account thereby, at the same time the possibilities of weight saving are used, that the carrier is provided with openings which are either increasingly smaller and / or less in the central region. In this case, the openings over the entire carrier can have a substantially constant shape, for example circular, but become smaller towards the middle. Alternatively or additionally, it is conceivable that the shape and / or orientation of the openings in the direction of the center changed in such a way that a smaller weakening occurs here. For example, it is possible to move from an ellipse shape in the zones near the edge to a circular shape in the middle region, and / or elliptical openings can be aligned horizontally instead of vertically. By the described measures or a combination thereof can be saved in particular on a steel beam extensive weight, and at the same time can meet the strength requirements in an advantageous manner.

This applies equally to the measure according to which the carrier itself is designed in terms of its dimensions over the length such that it is less weakened in a central region than in at least one end region. This can be done, for example accomplish that the carrier, which makes the impression of a "portrait" arrangement in a sectional view, in the middle region "higher" and thus more stable than in peripheral areas. This also makes it possible to ensure the strength over the entire length, in particular also in the middle region, and at the same time to save weight in particular at the edges.

With regard to the versatility of the slab formwork support, it has proven to be advantageous to design at least one opening such that at least one bracket can be suspended for supporting another, preferably a wooden formwork support. As a result, the compatibility with other slab formwork systems, which for example have wooden formwork beams, can be guaranteed. Furthermore, the described suspension for the particularly flexible embodiment of the edge region of the slab formwork system according to the invention is low. It should be noted that for the hanging of the described strap a regular arrangement, in other words a kind of grid, of possibly equal and / or uniform openings is conceivable. In particular, such an embodiment, optionally in combination with one or more of the features described above or below, as well as the use of at least one opening in a slab formwork carrier for hanging at least one bracket for receiving a further, preferably a timber formwork support as subject of the present application to watch. This applies equally to an attachable in an opening of a slab formwork bracket. This can be largely U-shaped with a bottom whose "width" (viewed from above) corresponds approximately to the width of a carrier (also viewed from above, measured perpendicular to the longitudinal extent of the carrier). At this bottom, two legs may be attached to different sides, so that they are in use largely vertical to different Extend sides of the formwork support. By mutually directed, but offset by the length of the soil projections or hooks of the bracket can be hung, for example, in two adjacent openings of a formwork support and used for placing one or more wooden formwork beams. It has heretofore been known to provide laterally strip-like projections over substantially the entire length of the carrier in the case of formwork carriers, which have an elevation at their end, so that the described brackets can be suspended. The measure described above, to use openings in the support for hanging ironing, on the other hand offers the advantage that there is a much lower risk of contamination than in the described strip-shaped projections.

As mentioned, the slab formwork carrier alone develops its advantages, but it can be advantageously integrated into a formwork element, in particular panel, and such an element can have several of the described slab formwork supports, so that the advantages described in a special way for a Use shuttering element.

For the slab formwork system according to the invention, a formwork element is furthermore preferred in which beams running transversely between edge supports are spaced less in a middle region of the panel than in end areas. As a result, the particularly loaded middle region can be reinforced in some way, while weight is saved in the end regions.

Finally, an embodiment of a formwork element has proved to be particularly favorable, in which any edge support are not curved, and this measure is used only for at least one particularly stressing cross member between the edge beams.

The invention further provides a slab formwork system with at least one slab formwork element according to the invention and a drop head which has at least one lowerable support for at least one slab form element which can be swiveled out of the vertical projection of the slab formwork element so that the slab formwork element can be lowered past the at least one pivotable support , In other words, the support or fall piece of the drop head according to the invention is pivotable such that a slab formwork element such. B. a Deckenschalungspaneel or a slab formwork carrier by a movement next to the support and along this can be lowered. The above-mentioned "vertical projection" is understood to mean that space which the ceiling formwork element in the position of use thus largely covers horizontally, in the vertical direction, that is, upwards and downwards.

From this space, the slab formwork element usually in the context of lowering, so the Ausschalens not emerge. The reason for this is that, in the context of the described Ausschalens Although described the slab formwork elements can be removed because the concrete is already cured to a certain extent at this time. However, the supports with the drop heads remain in such a way that the (not lowered) head plates of the supports support the concrete ceiling selectively until sufficient further curing. The possibility of removing the slab formwork elements is advantageous insofar as these elements can be brought early to another location, typically one to a floor higher ceiling. Here, these elements, which are subject to special stress and pollution due to the frequent and changing use, in the system according to the invention are not necessarily equipped with moving parts. Rather, these have only suitable bearings, which interact with the supports of the drop heads. The drop heads are with the described, pivotable supports provided, the swinging out, as described in more detail below, can be triggered in an advantageous manner from the ground and in the context of removal of the slab formwork elements in a simple manner. Since the supports can be swiveled out of the described vertical projection, the slab formwork elements can simply be lowered.

As mentioned, the drop head according to the invention has a (not lowerable) head plate, as well as a connection possibility to a prop. Further, a support member is preferably provided, which holds the lowerable support in a first position at a higher level, and in a second position, in which it has been moved, for example by a hammer blow, at a second, lower level. When the supports have been lowered, the ceiling formwork elements supported thereby can be removed in the manner described.

The pivoting out of the described vertical projection is particularly simple if a pivot axis of the support is arranged above the support. This means that the support can advantageously be initially pivoted upwards, for example by means of the undercut described below, by engagement with the ceiling formwork element, thereby disengaging from the ceiling formwork element. In the subsequent lowering movement, the support can be swung out of the vertical projection simultaneously.

In particular for safety in the position of use, in particular in the case of strong winds, it offers advantages if at least one support has at least one undercut acting in the vertical direction. The undercut essentially provides a projection below and on which a suitable portion of a Ceiling formwork element can be kept, so that this, which is quite possible in strong winds, can not be lifted. As described in more detail below, the undercut can also be used to the fact that when lifting the slab formwork element at the beginning of Ausschalvorganges also the support is slightly raised. In the arrangement of the pivot axis of the support above the described undercut moves away from the edge of the slab formwork element and thus comes out of engagement. As a result, the slab formwork element can subsequently be lowered, while the support is swung out of the vertical projection of the slab formwork element, for example by the pressure which the slab formwork element exerts on lowering it.

In the first tests, the formation of the same on a largely vertically oriented pin has also proved favorable for the concrete design of the undercut.

In certain applications, it may also be advantageous if the drop head has at least one second support that can be lowered by a distance that differs from a lowering distance of the first support. For example, ceiling formwork panels can be placed at the corners of typically a plurality of first, further lowerable supports. In this case, however, the surfaces immediately adjacent to the top plate of the drop head (on at least two sides) are to be closed by separate formwork elements. For this purpose, so-called cover strips or "small panels" have proven to be low, which can be lowered at stripping by a shortened path. This reduces the risk of damage. In the currently known slab formwork systems, it is customary to use cover strips or small panels, for example made of plastic, which each rest on the top plates of the drop heads. In other words, they form the Head plates themselves no part of the formwork. If, however, what is desired for economic reasons, as many components of a slab formwork system should be removed as early as possible, and the concrete is supported only selectively or in strips until complete curing, the cover strips described initially remain in place. If the supports are to be removed later, this is not possible for two supports at the same time, in order to also remove the cover strip resting on these two supports. Thus, first a support is removed, and the cover strip is no longer supported at one end, while it remains trapped at the other end between the stationary support and the concrete. In this situation, a break often occurs due to the dead weight of the cover strip. In the preferred embodiment of the invention described above, the small panels or cover strips may be removed after lowering the drop heads together with any larger formwork panels. This offers on the one hand economic advantages, because even the small panels or cover strips are used earlier in other floors. Furthermore, there is no longer the risk of breaking the cover strips or small panels. Finally, the described, comparatively narrow formwork elements, which were previously referred to as small panels or cover strips, easily ausschalbar, since they can be removed laterally from the lowered drop heads parallel to the freshly created concrete ceiling.

As a further elements of the slab formwork system, a bracket which can be suspended in at least one opening of a formwork support and suitable for placing at least one further formwork support, preferably a timber formwork support, one or more props and one or more slab formwork elements, in particular carrier or -paneele called ,

Finally, it should be mentioned that all above and below described individual elements of a slab formwork system, in particular also the bracket and the cover strip, alone, with any combinations of the features described herein and any combinations of the individual elements are to be regarded as the subject of the present application.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1

eine Perspektivansicht eines Fallkopfes;

Fig. 2

eine Seitenansicht des Fallkopfes mit einem bereits abgesenkten Deckenschalungspaneel;

Fig. 3

ein Detail von Fig. 2 beim Anheben des Deckenschalungselements;

Fig. 4

ein Detail von Fig. 2 beim Absenken des Deckenschalungspaneels;

Fig. 5

eine perspektivische Unteransicht einer Ecke eines Deckenschalungspaneels;

Fig. 6

eine perspektivische Ansicht eines Endes eines Deckenschalungsträgers;

Fig. 7

eine perspektivische Ansicht eines Stützenkopfes mit einem in einem ersten Zustand aufgelegten Träger gemäß Fig. 6;

Fig. 8

eine perspektivische Ansicht eines Stützenkopfes mit einem darauf in einem zweiten Zustand aufgelegten Träger gemäß Fig. 6;

Fig. 9

eine schematische Ansicht eines in ein Schalungspaneel integrierten Trägers;

Fig. 10

eine weitere Ausführungsform eines Trägers; und

Fig. 11

eine noch weitere Ausführungsform eines Trägers.

The invention will be explained in more detail with reference to an embodiment shown in the drawings. Show it:

Fig. 1

a perspective view of a drop head;

Fig. 2

a side view of the drop head with an already lowered Deckenschalungspaneel;

Fig. 3

a detail of Fig. 2 when lifting the slab formwork element;

Fig. 4

a detail of Fig. 2 when lowering the slab formwork panel;

Fig. 5

a perspective bottom view of a corner of a slab formwork panel;

Fig. 6

a perspective view of one end of a slab formwork carrier;

Fig. 7

a perspective view of a column head with a laid in a first state according to carrier Fig. 6 ;

Fig. 8

a perspective view of a column head with a laid on it in a second state according to carrier Fig. 6 ;

Fig. 9

a schematic view of an integrated in a shuttering panel carrier;

Fig. 10

another embodiment of a carrier; and

Fig. 11

a still further embodiment of a carrier.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT OF THE INVENTION

The in Fig. 1 shown drop head 10 has at its (in the use position shown) lower end substantially a pipe piece 20, with which it can be inserted into the upper end of a prop and fastened thereto. At its upper end of the drop head 10 is provided with a top plate 22, which can also be referred to as a stop plate and on the one hand serves as a tolerance limit and on the other hand limits the movement of the pivotable support described below, which in particular in the last row of panels, if only one of two in common hinged supports is useful. In particular, in this situation, namely the swing plates 24 described in more detail below namely the tendency to pivot completely downwards due to the one-sided load. In this case, there is a risk that the panel from the fully pivoted support disengages and falls. However, in the drop head according to the invention, the dimensions and positional relationships are preferably selected such that the top plate 22 serves as a stop for the panel 30. In particular, with one-sided load, the weight of the panel 30 causes (see. Fig. 2 ) pivoting the pivot plate 24 (according to the in Fig. 2 shown situation in the clockwise direction) is effected. Due to the Arrangement of the pivot point of the pivot plate 24 above the same moves a pivoting of the pivot plate 24, the shuttering panel 30 in the direction of the drop head 10. However, the shuttering panel 30 strikes the (largely vertically downwardly extending) side surfaces of the top plate 22, so that the pivoting movement of the pivot plate 24 is stopped. The formwork panel 30 can thus, as described in more detail below, first be held securely and then removed.

Somewhat below the top plate 22, a so-called second support 18 is provided in the embodiment shown, which serves in this embodiment for laying a cover strip (not shown) whose width substantially the width of the top plate (measured from bottom left to top right according to Fig. 1 ) corresponds.

The support 18 is lowered in the embodiment shown by a smaller distance than the support 12 described in more detail below.

In the embodiment shown, two opposite supports 12 are each formed on a common pivot plate 24, so that in each case the corners of two opposite (not shown) slab formwork panels can be placed on these supports. Between the two at the front, tilted drawn swivel plate 24 launched slab formwork panels located in the position of use, the lying on the support 18 cover strip.

In addition, according to the presentation of Fig. 1 behind the provided with reference numbers pivot plate 24 is another such pivot plate, so that two slab formwork panels on the left front side of the top plate 22 can be arranged with abutment against each other. In many arranged in this way slab panels and cover strips can be Concrete pavement to be poured. As part of the Ausschalens the securing member 26 is displaced in a substantially horizontal direction so that it is disengaged from a suitable portion of the drop head and falls down to the base plate 28. As a result, the pivot plates 24 and any lying thereon formwork panels are lowered.

This position is in Fig. 2 shown. The Deckenschalungspaneel is designated 30 and is still in the situation shown on the support 12. In the embodiment shown, the support 12 has a substantially vertical pin 16 which extends upwardly and an undercut 14 in the form of a (better in Fig. 3 recognizable) projection. This undercut acts with an undercut 32 (see. Fig. 3 ) on the slab formwork panel 30 together so that the slab formwork panel 30 is secured in the position of use in an advantageous manner against lifting. In this case, the projection of the undercut 14 projects substantially into the space formed above the undercut 32.

In Fig. 3 It is shown how the undercuts described now can be disengaged for lowering the slab formwork panel 30. This is advantageously possible because a pivot axis 34 (cf. Fig. 2 ) of the support 12 is located above it. As a result, when the slab formwork panel 30 is slightly raised from the ground, for example by means of a suitable bar, and the undercut 32 formed therein raises the pivot plate 24 of the support 12 via the undercut 14 formed on the pin 16, the undercut will rise 14 due to the above arranged rotational axis 34 (see. Fig. 2 ) Moved away from this, and thus gradually disengaged. In particular, the in Fig. 3 Movement shown so far continued without the slab formwork panel in shift horizontal direction that the undercuts completely disengage, and substantially the horizontally projecting plate which forms the undercut 32 on the Deckenschalungspaneel 30, above the pin 16 is arranged. This is especially true when the pivot plate 24 is stabilized, and is largely aligned horizontally.

Subsequently, the slab formwork panel, still from the ground, is supported by a worker with a suitable pole and lowered down so that, as in Fig. 4 shown, sections of the slab form panel on top of the pin 16 so that the pivot plate 24 is pivoted so that the support 12 is sufficiently pivoted out of the vertical projection of the ceiling formwork element 30. In other words, the support including the pin moves as shown in FIG Fig. 4 to the left, so that the vertical projection of the ceiling formwork element 30 below the same for stripping the slab formwork element and after carrying out the same process on the other side of its removal downwards is free. The undercut 32 of the Deckenschalungspaneels 30 and any, for example, sleeve-like elements, which are provided on the slab formwork panel for laying on the support, for example, on an integrated support of the slab formwork panel, which may be made of metal, in particular steel, may be provided.

In Fig. 5 is a corner of a formwork element in the form of a Deckenschalungspaneels 110 can be seen. The corner 112 thus forms an end in the sense of the preceding description. In particular at the edges and at the corners 112, the shuttering panel 110 has beams or profiles, preferably of metal, in particular steel, which in the case shown define a peripheral edge defining a (flat) space in which a formwork panel is inserted, the forms together with numerous other such formwork panels the actual formwork skin. In the position of use below this formwork skin, the shuttering panel on the described carrier, which can form a frame and can be provided as the frame reinforcing cross member.

In the in Fig. 5 shown corner 112 two supports 114, 116 are provided in accordance with the principles of the invention. In the case shown, both are largely sleeve-shaped, that is closed on at least three sides, and extend differently far from the end of the formwork element formed by the formwork panel (upper position in use position). As a result, the shuttering panel 110 can be placed at two different levels on suitable other elements of a slab formwork system, for example supports or their heads. In the case shown, the higher support 114 is closer to the corner 112 than the lower support 116, which provides handling benefits. Due to the sleeve-like shape of the two supports 114, 116, the supports can cooperate with suitable counter-elements, for example pins, and are thereby secured against displacement in all horizontal directions. Incidentally, the formwork panel 110 described above can be described with reference to FIGS Fig. 1 to 4 correspond to panel 30 described. In particular, the in Fig. 5 shown panel on at least one corner and in at least one support with reference to the Fig. 2 to 4 have described undercut.

The horizontal fuse is similar to the one in FIG Fig. 6 Shuttering element shown in the form of a formwork support 120 of the case, in which, however, a lower support 130 is switched on and away. The lower 130 and the upper supports 132 are in turn provided with a vertically extending cavity, which in this case is bounded on at least three sides and with a rounded Contour is provided. Thus, here can enter a pin or pin of a counter element to secure the formwork support against lateral displacement. As in Fig. 6 can be seen, the lower support 130 is pivotable about an axis 134 located below the support 132, so that it is effectively accommodated in the folded-away state in the web 136 of the carrier 120, and does not affect the operational capability of the upper support 132. At the in Fig. 6 Formwork support shown results in the particular advantage that the two supports 130, 132 are directed in the same direction. As a result, for example, a mounted on the top of the carrier 120 wood insert 138 for securing shuttering panels by means of nails when using both supports 130, 132 available. Thus, the formwork support 120 is an always flexible usable ceiling formwork element.

In Fig. 7 It is shown how the formwork support 120 can be placed using the lower support 130 on a support head 140, the support head 10 of Fig. 1 to 4 equivalent. In particular, the formwork support 120 can be placed on a journal of the same such that the upper edge of the formwork support 120 is level with the top plate 142 of the support head 140. As a result, formwork panels can be placed on the carrier 120 and the top plate 142. Alternatively, the dimensions may be chosen such that the upper edge of the formwork support 120 is located about the thickness of a formwork panel below the top plate 142 so that the created formwork skin is formed both by formwork panels laid on the support 120 and the top panel 142 itself. In particular, in this case, the formwork support 120 can be used as a so-called transition or edge support. As a transitional carrier, it forms the transition from a formwork system, the prefabricated formwork panels and largely strip-shaped small panels between each support heads 142 has, and a region, for example, by using a Holzschalungssystems with wood beams and individually tailored formwork panels is geschalt. In order to be able to place the shuttering panels on an element of this system not only on the described wooden beams, but also on the transition to the formwork system described above in the first place, the formwork support 120 shown can be used in an advantageous manner. In the situation described above with regard to the transition to another formwork system or the connection of elements of another formwork system can also be used in an advantageous manner the above-described hooked into an opening of a formwork support bracket. The advantageous use of the formwork support 120 applies in a similar manner at the edges of a formwork system having prefabricated formwork elements. At the edges, for example, towards walls, often individually tailored formwork panels or boards must be used, which can be placed in an advantageous manner on the formwork support 120 described, which then acts as edge support.

Furthermore, as in Fig. 8 shown by a plurality of formwork beams 120 a grid of yoke and cross members are formed. In order to bring in such an application, the Jochträger 122 on the respect to the top plate 142 "right" level, both the cross members 122 and the Jochträgern 124, the upper supports 132 are used. The yoke beams 124 are thus (compared with Fig. 7 ) at a lower level, and the transverse beams 122 placed on the yoke beams 124, as shown, then form the "right" level with respect to the top plate 142. This may, as described above, be the same level, so that formwork panels can be placed on the top plate 142 and the cross members 122 in cooperation. Alternatively, the cross beams 122 may be located about the thickness of a formwork panel below the top plate 142 so that the on the Crossmember 122 laid formwork panels form a consistent level with the top plates 142, and the formwork is a total of these two elements, in cooperation with each other, is formed.

In Fig. 9 is shown exaggerated in a side view and in terms of the curvature of an advantageous carrier 210 which is integrated in the example shown in a formwork element, of which, however, only edge profiles 212 are shown. In the final state is above the profiles 212 and the support 210, a formwork panel, is poured onto the concrete. The resulting line load loads the carrier in particular at its central region comparatively extensive, since it is supported at its edges on suitable supports. To counteract this load in the form of a kind of bias, the carrier according to the invention in the in Fig. 9 shown embodiment curved in the direction of the expected load. This vault is in Fig. 9 However, in practice, depending on the length of the carrier, in practice, a few millimeters. At the in Fig. 9 The carrier shown may in particular be one of possibly a plurality of such cross members, which are at least partially curved in the manner described, while this does not necessarily have to be provided for the edge supports or profiles 212. At the in Fig. 9 In addition, in the embodiment shown, openings 214 are shown which are unevenly distributed over the length of the carrier.

At the in Fig. 10 In the embodiment shown, such openings 214 are according to an alternative measure, but with the in Fig. 9 can be combined over the course of the support 220 in terms of their size changed. In particular, the openings become smaller towards the center and are completely omitted in the illustrated embodiment in the central area, so that this particularly loaded area is significantly less weakened than the end areas. As a result, the strength can be ensured over the entire course of the carrier, weight being saved especially in the less loaded end regions.

This applies equally to the in Fig. 11 shown third embodiment of a carrier 230, which is additionally designed in the end regions A (according to the position of use) less "high" than in a central region. Bearing 232 can be seen at the ends. Over the course of the carrier 230 is further provided with openings whose shape, orientation and distribution varies over the length of the carrier. In the example shown, openings are provided in the end regions in the form of a respective comparatively flat triangle whose corners are rounded with different radii. In the example shown, two sides of the triangle are substantially parallel to edges of the beam, namely to the top edge and the bottom edge inclined in this area. The radius of curvature is greatest towards the end of the beam and smallest at the top, toward the inside of the beam. Instead of the openings shown also oval or elliptical and rectangular openings may be provided with rounded portions at their ends and, for example, be aligned substantially parallel to the inclined in this area lower edge of the carrier. Elliptical or oval openings and / or openings in any of the shapes described above may be substantially vertically aligned with the center of the carrier as shown, and may be substantially horizontally aligned further toward the center. In the middle of the carrier are also found circular openings. Overall, it could be found for the example shown a special distribution, shape and orientation change of the openings that weight can be saved and at the same time the strength is ensured over the entire course of the wearer. The foregoing with reference to the Fig. 9 to 11 described measures on a carrier, for example, to the in Fig. 6 to 8 shown carriers are realized, and / or carrier with one or more of these measures can in a shuttering panel 30 of Fig. 2 to 4 or 110 of the Fig. 5 to get integrated.

1. 1. Fallkopf (10, 142) für ein Deckenschalungssystem mit zumindest einem absenkbaren Auflager (12) für ein Deckenschalungselement (30, 112, 120 bis 124), wobei das Auflager aus der vertikalen Projektion des Deckenschalungselements (30, 112, 120 bis 124) derart um eine weitgehend horizontale Schwenkachse (34) herausschwenkbar ist, dass das Deckenschalungselement (30, 112, 120 bis 124) an dem zumindest einen verschwenkbaren Auflager (12) vorbei absenkbar ist, und wobei die Schwenkachse (34) des Auflagers (12) oberhalb des Auflagers (12) angeordnet ist.
2. 2. Fallkopf nach 1,
   dadurch gekennzeichnet, dass zumindest ein Auflager (12) zumindest eine in vertikaler Richtung wirkende Hinterschneidung (14) aufweist.
3. 3. Fallkopf, nach 2,
   dadurch gekennzeichnet, dass die Hinterschneidung (14) an einem weitgehend vertikal ausgerichteten Stift (16) ausgebildet ist.
4. 4. Fallkopf nach einem der vorangehenden,
   ferner mit zumindest einem zweiten Auflager (18), das um eine Distanz absenkbar ist, die sich von einer Absenkdistanz des ersten Auflagers (12) unterscheidet.
5. 5. Deckenschalungssystem mit zumindest einem Fallkopf (10, 142) nach zumindest einem der vorangehenden Ansprüche.
6. 6. Deckenschalungssystem nach 5 und 2, ferner mit einem Deckenschalungselement (30), das eine mit der an dem Auflager (12) des Fallkopfes (10) ausgebildeten Hinterschneidung (14) zusammenwirkende Hinterschneidung (32) aufweist.
7. 7. Deckenschalungssystem nach 5 oder 6, ferner mit zumindest einem Deckenschalungsträger (210, 220, 230) bevorzugt aus Stahl, der zumindest geringfügig in Richtung des einzufüllenden Betons gewölbt ist und/oder Öffnungen (214) aufweist, deren Größe und/oder Form und/oder Ausrichtung und/oder Verteilung sich über die Länge des Trägers (210, 220, 230) derart verändert und/oder der Träger (210, 220 , 230) im Hinblick auf seine Abmessungen über die Länge derart gestaltet ist, dass der Träger (210, 220, 230) in einem mittleren Bereich weniger geschwächt ist als in Endbereichen (A).
8. 8. Deckenschalungssystem nach 7,
   dadurch gekennzeichnet, dass in zumindest eine Öffnung (214) zumindest ein Bügel zur Auflage eines weiteren, vorzugsweise eines Holz-Schalungsträgers einhängbar ist.
9. 9. Deckenschalungssystem nach 7 oder 8, dadurch gekennzeichnet, dass der Deckenschalungsträger in ein Schalungselement, insbesondere -paneel integriert ist.
10. 10. Deckenschalungssystem nach einem der 5 bis 9, ferner mit zumindest einem Deckenschalungselement (110, 120), das an zumindest einem Ende (112) mit zumindest zwei in die gleiche Richtung gerichteten Auflagern (114, 116, 130, 132) versehen ist, die bei weitgehend horizontaler Anordnung des Deckenschalungselements derart auf unterschiedlichen vertikalen Höhen angeordnet sind, dass das Deckenschalungselement (110, 120) auf zumindest zwei unterschiedlichen horizontalen Niveaus auf andere Elemente (142) eines Deckungsschalungssystems auflegbar ist.
11. 11. Deckenschalungssystem nach 10,
    dadurch gekennzeichnet, dass das höhere Auflager (114) näher zum Ende des Deckenschalungselements angeordnet ist, als das niedrigere Auflager (116).
12. 12. Deckenschalungssystem nach 10 oder 11,
    dadurch gekennzeichnet, dass zumindest ein Auflager (114, 116, 130, 132) zumindest bereichsweise aus Metall und/oder einem faserverstärkten Kunststoff ausgeführt ist.
13. 13. Deckenschalungssystem nach einem der 10 bis 12,
    dadurch gekennzeichnet, dass zumindest ein Auflager (114, 116, 130, 132) hülsenförmig ausgebildet ist.
14. 14. Deckenschalungssystem nach einem der 10 bis 13,
    dadurch gekennzeichnet, dass zumindest ein Auflager (130) unterhalb eines weiteren Auflagers (132) zu- und wegklappbar ist.
15. 15. Deckenschalungssystem nach einem der 5 bis 14, mit zumindest einem Deckenschalungselement mit mehreren Trägern, von denen zumindest zwei in einem mittleren Bereich des Schalungselements geringer beabstandet sind als in Endbereichen.
16. 16. Deckenschalungssystem nach 15, mit zumindest einem Schalungspaneel mit Randträgern und Querträgern zwischen den Randträgern, dadurch gekennzeichnet, dass lediglich zumindest ein Querträger gewölbt ist.
17. 17. Deckenschalungssystem nach einem der 5 bis 16, ferner mit zumindest einem Bügel, der in zumindest eine Öffnung (214) eines Schalungsträgers (210, 220, 230) einhängbar und zum Auflegen zumindest eines weiteren Schalungsträgers, bevorzugt eines Holz-Schalungsträgers geeignet ist.

The following items are also to be considered as objects of the application:

1. 1. head (10, 142) for a slab formwork system with at least one lowerable support (12) for a slab formwork element (30, 112, 120 to 124), wherein the support from the vertical projection of the slab formwork element (30, 112, 120 to 124) is swung out about a substantially horizontal pivot axis (34) that the slab formwork element (30, 112, 120 to 124) on the at least one pivotable support (12) is lowered over, and wherein the pivot axis (34) of the support (12) above of the support (12) is arranged.
2. 2. drop head according to FIG. 1,
   characterized in that at least one support (12) has at least one undercut (14) acting in the vertical direction.
3. 3. drop head, according to FIG. 2,
   characterized in that the undercut (14) is formed on a substantially vertically oriented pin (16).
4. 4. falling head according to one of the preceding,
   further comprising at least a second support (18) lowerable by a distance different from a lowering distance of the first support (12).
5. 5. slab formwork system with at least one drop head (10, 142) according to at least one of the preceding claims.
6. 6. slab formwork system according to 5 and 2, further comprising a slab formwork element (30) having a with the on the support (12) of the drop head (10) formed undercut (14) cooperating undercut (32).
7. 7. slab formwork system according to 5 or 6, further comprising at least one slab formwork support (210, 220, 230) preferably made of steel, which is at least slightly curved in the direction of the concrete to be filled and / or openings (214) whose size and / or shape and / or alignment and / or distribution over the length of the carrier (210, 220, 230) changed so and / or the carrier (210, 220, 230) is designed in terms of its dimensions over the length such that the carrier ( 210, 220, 230) is weakened less in a central region than in end regions (A).
8. 8. slab formwork system according to 7,
   characterized in that in at least one opening (214) at least one bracket for supporting a further, preferably a wooden formwork support is suspended.
9. 9. slab formwork system according to 7 or 8, characterized in that the slab formwork support is integrated in a formwork element, in particular -paneel.
10. 10. slab formwork system according to one of the 5 to 9, further comprising at least one ceiling formwork element (110, 120) which is provided at least one end (112) with at least two directed in the same direction supports (114, 116, 130, 132) the at largely horizontal Arrangement of the slab formwork element are arranged at different vertical heights that the slab formwork element (110, 120) on at least two different horizontal levels on other elements (142) of a cover formwork system can be placed.
11. 11. slab formwork system according to 10,
    characterized in that the higher support (114) is located closer to the end of the slab form member than the lower support (116).
12. 12. slab formwork system after 10 or 11,
    characterized in that at least one support (114, 116, 130, 132) is at least partially made of metal and / or a fiber-reinforced plastic.
13. 13. Slab formwork system according to one of the 10 to 12,
    characterized in that at least one support (114, 116, 130, 132) is sleeve-shaped.
14. 14. Ceiling formwork system according to one of the 10 to 13,
    characterized in that at least one support (130) below another support (132) and can be folded away.
15. 15. slab formwork system according to one of the 5 to 14, with at least one slab formwork element with a plurality of carriers, of which at least two are spaced less in a central region of the formwork element than in end regions.
16. 16. slab formwork system according to 15, with at least one shuttering panel with edge beams and cross beams between the edge beams, characterized in that only at least one cross member is curved.
17. 17 slab formwork system according to one of the 5 to 16, further comprising at least one bracket which is in at least one opening (214) of a formwork support (210, 220, 230) suspended and for laying at least one further formwork support, preferably a wooden formwork support suitable.

Claims (16)

Slab formwork element (30, 112, 120 - 124), in particular - panel (112) or support (30, 120 - 124) with at least one support (114, 116, 130, 132), which has an undercut (32) is suitable to cooperate with an undercut (14) on a column head, in particular a drop head (10). Ceiling formwork element, in particular according to claim 1, with at least one sleeve-shaped support (114, 116, 130, 132). Ceiling formwork element (110, 120) according to claim 1 or 2, which is provided on at least one end (112) with at least two directed in the same direction supports (114, 116, 130, 132), in such a substantially horizontal arrangement of the slab formwork element are arranged at different vertical heights that the slab formwork element (110, 120) on at least two different horizontal levels on other elements (142) of a cover formwork system can be placed. Slab formwork element according to claim 3,
characterized in that the higher support (114) is located closer to the end of the slab form member than the lower support (116). Ceiling formwork element according to one of the preceding claims,
characterized in that at least one support (114, 116, 130, 132) is at least partially made of metal and / or a fiber-reinforced plastic. Ceiling formwork element according to one of the preceding claims,
characterized in that at least one support (130) below another support (132) and can be folded away. Ceiling form carrier according to one of the preceding claims, preferably made of steel, which is arched at least slightly in the direction of the concrete to be filled and / or openings (214) whose size and / or shape and / or orientation and / or distribution over the length of the carrier (210, 220, 230) and / or the carrier (210, 220, 230) is designed in terms of its dimensions over the length such that the carrier (210, 220, 230) is weakened less in a central region as in end regions (A). Slab formwork support according to claim 7,
characterized in that in at least one opening (214) at least one bracket for supporting a further, preferably a wooden formwork support is suspended. Ceiling form carrier according to claim 7 or 8,
characterized in that it is integrated in a formwork element, in particular panel. Deckenschalungspaneel according to one of claims 1 to 6, with a plurality of carriers, preferably according to one of claims 7 to 9, of which at least two are spaced less in a central region of the formwork element than in end regions. Deckenschalungspaneel according to one of claims 1 to 6 and 10, with edge beams and cross members between the edge beams, preferably according to one of claims 7 to 9, characterized in that only at least one cross member is curved. Slab formwork system with at least one slab formwork element according to one of the preceding claims and a drop head (10, 142) with at least one lowerable support (12) for a slab formwork element (30, 112, 120 to 124), wherein the support consists of the vertical projection of the slab form element (30 , 112, 120 to 124) is pivotable about a substantially horizontal pivot axis (34) such that the slab formwork element (30, 112, 120 to 124) can be lowered past the at least one pivotable support (12), and wherein the pivot axis (34 ) of the support (12) is preferably arranged above the support (12). Slab formwork system according to claim 12,
characterized in that at least one support (12) of the drop head has at least one undercut (14) acting in the vertical direction. Slab formwork system according to claim 13,
characterized in that the undercut (14) is formed on a substantially vertically oriented pin (16). Slab formwork system according to one of claims 12 to 14,
further comprising at least a second support (18) on the drop head, which is lowered by a distance that differs from a Absenkdistanz of the first support (12). Ceiling formwork system according to one of claims 12 to 15, further comprising at least one bracket which is in at least one opening (214) of a formwork support (210, 220, 230) suspended and suitable for placing at least one further formwork support, preferably a wooden formwork support.

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