EP3599323A1 - Bearing head comprising a clamping device and corresponding ceiling formwork system - Google Patents

Abstract

The invention relates to a slab formwork system with a formwork panel (10) which can be supported on at least one vertical support (12) via a bearing head (14). The invention is characterized in that the bearing head (14) has an anchoring crossbar which, in the assembled state, is oriented transversely to the vertical support, the length of the anchoring crossbar corresponding to at least one side length of the slab formwork panel to be supported, which means that the anchoring crossbar (16) the ends of which can be fixed on the side edges of the slab formwork panel.

Description

The invention relates to a bearing head as it is used on a vertical support for supporting a slab formwork panel for concreting purposes. The invention also relates to a slab formwork system consisting of slab formwork panel, bearing head and vertical support with anchoring element in combination.

Ceiling formwork systems are generally used in the construction of concrete ceilings for buildings, which create a receiving area for the flow concrete. After curing, this should form the desired ceiling structure. Now it is problematic in slab formwork systems with formwork elements or panels mounted on vertical supports that horizontally directed forces can act on the vertical supports or formwork elements, which can lead to an inclination of the entire slab formwork system and, in the worst case, even cause it to tip over.

In order to counteract this problem, it is known to provide clamping connections for the ceiling formwork between the ceiling formwork panel and the existing building. As a rule, these horizontal loads are derived in the formwork level via inclined tension members that are anchored to the floor, for example. At its opposite end they are fixed to the vertical support or the bearing head on which the slab formwork panel is supported. An anchoring system for slab formwork panels based on this model is, for example, based on the DE 10 2007 008 209 A shown and explained.

This construction also inevitably results in a selective load on the formwork panel, namely where the vertical support on the panel engages, which stress must be taken into account when dimensioning the formwork. The previously known guy options only allow relatively small forces.

The object of the present invention is to improve a slab formwork system in order to be able to apply the greatest possible forces to a panel for the removal of horizontal loads with the least possible structural outlay.

The main idea of the invention is to collect and derive horizontally occurring loads.

In terms of device technology, a bearing head is designed with the invention as it can be used for a vertical support for supporting a slab formwork panel, but which, compared to the prior art, has an anchoring crossbar which, in the assembled state, is oriented transversely to the vertical support. The length of the guy crossbar corresponds to at least one side length of the slab formwork panel to be supported. This allows the bracing crossbar to engage with its respective ends on both side edges of the slab formwork panel, with which the bracing crossbar thus acts simultaneously at two spaced points in order to support and brace the slab formwork panel. In other words With the bearing head according to the invention, horizontal loads can be collected over the said side length of the slab formwork panel - that is to say in its transverse or longitudinal direction - in order to then dissipate them in total via the guy crossbar. This means that even larger horizontal loads can be removed compared to existing solutions.

Since only a single anchoring element, such as an anchoring chain or an anchoring belt, is required for a single anchoring crossbar, fewer anchoring elements are required compared to the prior art with the same number of formwork panels. This is because if, in the prior art, tensioning was carried out at two points in each case, a single guy crossmember according to the invention can be used to guy at these two points at the same time using a single guy element. In addition, the solution according to the invention of the new bearing head with anchoring crossbar also results in faster assembly, since it no longer has to be anchored individually at each support point.

The vertical force resulting from the sloping bracing of a slab formwork panel is absorbed by a vertical support that supports the bearing head. This completely compensates for the entry of vertical loads into the slab formwork system. The forces collected by the guy crossbar at two points of the slab formwork panel are taken up and transferred together at the guy point, ie the connection point between the bearing head and the vertical support, which means that the entire vertical load is transferred via the vertical support directly at the point of origin. This means that a single support of the slab formwork panel at its two corner points can be omitted and replaced by the sole support by means of a single vertical support in the middle of the guy crossbar.

The slab formwork system according to the invention thus comprises at least one formwork panel, with at least one vertical support supporting the formwork panel, as well as with a bearing head described above and means for fixing the anchoring element. To accommodate the guy crossbar, i.e. For fixing the two ends of the guy crossbar to the formwork panel, the formwork panel has respective snap-in receptacles, so that when the guy crossbar is included in the formwork panel, tensile stress can be applied to the formwork panel via the cross member on the cross member, so that the load in the formwork plane is at least partially derived horizontally.

The length of the crosshead of the bearing head is adapted to a side length of the formwork panel with regard to its length or width. The guy crossbar is received in the center of the bearing head, whereby according to an advantageous embodiment the guy element in the form of a chain or a band, etc. equally engages the guy crossbar in the middle, so that the bearing head has the means for fixing the guy element.

In an advantageous embodiment, the bearing head can then be fixed to and supported by the vertical support via a flange. In order to facilitate alignment between the bearing head and the vertical support on the one hand and to fix them by means of a flange connection, the bearing head can have an alignment element in the form of a bolt which can protrude into a hollow end of the vertical support for alignment.

With regard to the fixing of the guy crossbar to the formwork panel, in an advantageous embodiment the formwork panel has a circumferential frame in which snap-in receptacles are provided as openings on opposite sides for receiving the crossbar ends. Since the Anchoring traverse for securely holding the formwork panel must be slightly longer than the exact side length of the panel, the opening mentioned is a snap-in receptacle in the form of an elongated hole, so that the anchoring crossbar is first inserted from below the formwork panel into one latching opening, then the anchoring crossbar in a parallel one Level to the formwork panel can be angled to insert the second end of the crossbar into the second locking receptacle opening. When the guy crossbar is unclamped, it is then brought into a stop position in the snap-in receptacle openings.

In order to prevent displacement of the guy crossbar along its longitudinal axis following a reception in the snap-in receptacle openings, in an advantageous embodiment the guy crossbar has two snap-in brackets projecting at right angles to the longitudinal axis of the crossbar.

These are advantageously both provided at the same end of the guy crossbar at a distance from one another, so that a frame section of the formwork panel can be accommodated between them, the shape and the dimension of the outside latching bracket being selected such that it is only in a special position relative to the complementary locking receptacle can be passed through this in shape and size. If the guy crossbar is now inserted at this end with the locking bracket through the snap-in receptacle, when the guy crossbar is rotated about its longitudinal axis, this outer locking bracket is also rotated, so that it can no longer be returned through the locking opening and the locking bracket thus stops forms against the frame element. A translational displacement of the guy crossbar along its longitudinal axis, namely towards the inside of the panel, is no longer possible.

The second locking bracket, which strikes the inside of the frame section of the frame of the formwork panel, forms an inhibition of the translational displacement of the guy crossbar along its longitudinal axis in the opposite direction. The shape of the second, latching bracket on the inside can be of any size, since it does not have to be passed through the latching opening anyway.

According to an advantageous embodiment, however, the latching brackets are constructed identically, whereby they are arranged offset on the outer circumference of the crossbar along the longitudinal axis thereof. The consequence of this is that, with a suitable rotation about its longitudinal axis, the bracing crossbar can be pushed through one and the same locking receptacle opening with both locking brackets. This can facilitate insertion of the opposite end of the guy crossbar into the complementary latch opening. This applies all the more, the greater the length of the crossbar is relative to the relevant side length of the formwork panel.

As has already been indicated above, in an advantageous embodiment the bearing head can be fixed on the vertical support by means of a flange.

Finally, according to an advantageous embodiment, the slab formwork system has a turnbuckle on the anchoring element in order to build up and adjust a tensile stress through the anchoring element between the anchoring point and the bearing head.

Insofar as a formwork panel of the above type is configured in such a way that it can be coupled with other formwork panels via their end faces, it is possible to brace a plurality of formwork panels with a single bearing head and an anchoring crossbar connected therewith, so that the Anchoring force applied via an anchoring element of an individual formwork panel can be transferred to the formwork panels present in the direction of force.

Additional details and further advantages of the invention are described below with reference to an exemplary embodiment, to which the present invention should not be read in a restrictive manner, as described in connection with the accompanying drawing figures.

- Fig. 1

eine perspektivische Ansicht des erfindungsgemäßen Lagerkopfes;

- Fig. 2

eine Frontansicht und Draufsicht auf den Lagerkopf aus Fig. 1;

- Fig. 3

eine jeweilige perspektivische Ansicht von oben und von unten auf das erfindungsgemäße Deckenschalungssystem;

- Fig. 4

Details des Deckenschalungssystems aus Fig. 3; und

- Fig. 5

Phasen einer Montage des Lagerkopfes am Schalungs-Paneel.

Show in these

- Fig. 1

a perspective view of the bearing head according to the invention;

- Fig. 2

a front view and top view of the bearing head Fig. 1 ;

- Fig. 3

a respective perspective view from above and from below of the slab formwork system according to the invention;

- Fig. 4

Details of the ceiling formwork system Fig. 3 ; and

- Fig. 5

Phases of mounting the bearing head on the formwork panel.

Fig. 1 shows the bearing head 14 according to the invention in a perspective view. It has an anchoring crossmember 16, the length of which roughly corresponds to a side length of a formwork panel 10, ie protrudes slightly beyond it, around the ends of the anchoring crossmember on a frame 22 (see Fig. 4 ) to fix the panel securely. It is usually an encircling frame of the panel.

In the present case, the guy crossbar consists of a round tube, which, for reasons of stability, is accommodated in a rectangular tube and fixed with it is connected, for example by welding. This makes the guy crossbar optimally rigid. This is an embodiment variant. Of course, the person skilled in the art understands that the bracing cross member can also consist of a single rectangular tube frame or alternatively a round tube, or that a round tube can be fixed, for example welded, to both sides of a central rectangular tube ,

An element of the bearing head protrudes downward transversely to the crossbar 16, namely an attachment support with which the bearing head 14 is supported on a vertical support 12 (see Figures 3 and 4 ) can be placed and fixed via a flange 32. By means of the fastening support and an alignment element 28, the guy crossbar 16 can be rotated manually well about its longitudinal axis (see details in the description of this) Fig. 5 ). The alignment element 28, which can be seen below the flange, serves to facilitate fixing of the bearing head in a hollow section of the vertical support.

Means 20 for anchoring the bearing head are also located on the anchoring crossbeam 16, which are also referred to as an anchoring eye. These means, ie the guying eye, show two plate elements which are aligned parallel to one another and are seated on the square tube frame and are connected by a bolt. The bracing element 18 (see for example Fig. 3 or 4 ) can be attached. The means 20, or more precisely the parallel plate elements, can be rotated relative to the longitudinal axis of the guy crossbar, so that any angle of the guy element 18 relative to the guy crossbar can be assumed following a fixation on the bolt without using means 20 to apply torque to the square tubular frame muster.

At one end of the crossbar 16, two locking brackets 26 can be seen, each of which has a stop in cooperation with the frame of the formwork panel 10 (see, for example Fig. 3 ) form in order to inhibit a translational displacement of the crossbar 16 following assembly on the formwork panel (see details in the description of this Figures 4 and 5 ).

Fig. 2 shows the bearing head Fig. 1 each in a front view and a plan view with the respective section AA. As can be seen in the front view, the fastening support protrudes downward at right angles from the guy cross member 16, the alignment element 28 projecting below the flange 32. The locking brackets 26 shown in the sectional view AA of the front view are shown in dashed lines because they lie in front of the sectional plane.

Fig. 3 shows the slab formwork system according to the invention from formwork panel 10 - more precisely, three formwork panels 10 are shown - a vertical support 12 supporting the central formwork panel and a bearing head 14 with anchoring cross member 16 in a state mounted in the middle formwork panel. The guy element 18 can also be seen in the form of a guy chain. The latter is anchored to the floor by means of a fixing anchor (the floor is not shown in the drawing), and at the other end the guy chain is attached to the bolt of the guy means 20. To tension the guy chain 18, a turnbuckle 30 is used, with which the length of the guy chain can be varied, so that a guy force in the form of tensile stress can be applied to the bearing head 14 with guy crossbar 16.

Each ceiling formwork element has a total of eight locking receptacles 24, ie two locking receptacles on each side length of the formwork panel. This means that a crossbar can be attached to each Install short sides across the width direction of the formwork panel, as well as a longer crossbar on the long sides of the panel. In other words, each formwork panel can be braced in its width and / or in its longitudinal direction. Said snap-in receptacle openings 24 are provided in the frame 22 of the formwork panel, which frame runs on the peripheral edge of the formwork panel. In Fig. 3 an anchoring cross-member is anchored across the width of the middle formwork panel.

Out Fig. 4 assembly details of the guy crossbar on the formwork panel, ie on the frame 22, can now be seen. As shown, the bearing head 14 with anchoring cross-member 16 is completely received on the frame 22 of the formwork panel 10 and fixed by means of the latching brackets 26 in such a way that a translational displacement of the anchoring cross-member 16 along its longitudinal axis in the peripheral frame 22 is inhibited. The respective catch receptacle 24 is formed by a triangular slot opening. This facilitates the insertion of the guy crossbar 16 at the respective end. In other words, the guy crossbar can be pivoted in a plane parallel to the formwork level of the panel, whereby the dimensioning of the latching opening 24 allows the guy crossbar 16 to be easily pushed in from inside the frame 22.

The detail A shows very clearly the stop of the outer locking bracket 26 on the outer surface of the frame 22 of the formwork panel 10. With the aid of the configuration of both locking brackets 26 (see Fig. 1 ) it can be seen that the inner locking bracket 26 rests on the inside, ie on the inner surface of the frame 22 and the guy crossbar 16 is held by this stop in such a way that it is not displaced outwards through the locking receptacle opening 24 shown in detail A. can. As a result, the guy crossbar 16 as a whole can not through the opposite opening as shown in detail B.

In Fig. 5 phases 1-6 of mounting the bearing head with anchoring crossbar on the frame of a formwork panel are now shown. The bearing head 14 is first tilted in order to align the outer locking bracket about the longitudinal axis of the guy crossmember 16 such that the outer locking bracket 26 can be pushed from the inside of the frame 22 through the corresponding locking receptacle opening 24 (see also phases 2 and 3). In phase 4, the bearing head 14 is then pivoted downward again, as a result of which the outer locking bracket 26 is also rotated such that it can no longer be pushed back through the locking receptacle opening 24. In addition, the other, that is, the inner locking bracket forms a stop on the inside of the frame surface so that the crossbar 16 in the locking receptacle opening 24 as a whole can no longer be displaced translationally along its longitudinal axis.

Subsequently, the guy element 18 can then be attached to the means for guying in the form of a guy chain and a vertical support can be mounted on the bearing head via the flange connection 32. The guy chain can then be fixed and anchored there by means of a floor anchor, which means that horizontal loads are transferred to the existing structure when the slab formwork panel is in the anchored state.

Reference number list:

10

Schalungspaneel

12

vertical support

14

bearing head

16

Traverse credits

18

anchoring element

20

Anchoring means

22

frame

24

latching receptacle

26

latching clip

28

aligning

30

turnbuckle

32

flange

Claims (10)

Bearing head (14) for a vertical support for supporting a slab formwork panel,
characterized in that the bearing head (14) in the assembled state on the vertical support has a crossbar (16) oriented transversely to the latter, the length of which corresponds at least to one side length of the slab formwork panel to be supported, with the ends of the guy crossbar (16) at the side edges of the slab formwork panel is fixable. Ceiling formwork system - with at least one formwork panel (10), - With at least one vertical support (12) supporting the formwork panel, - With a bearing head (14) according to claim 1, and with - Means for fixing a guy element (18), wherein the formwork panel has a respective snap-in receptacle (24) for receiving a respective end of the crossbar, so that when the crossbar is included in the formwork panel, tension can be applied via the crossbar (18) to the at least one formwork panel via the crossbar (16) in order to provide a load in Derive formwork level at least partially horizontally. Slab formwork system according to claim 2,
characterized in that the means for fixing the bracing element (18) to the bearing head (14) are provided. Slab formwork system according to claim 2 or 3,
characterized in that the formwork panel has a circumferential frame (22) in which the snap-in receptacles (24) are provided as openings on opposite sides of a panel frame for receiving the traverse ends. Slab formwork system according to claim 4,
characterized in that the guy crossbar (16) has two locking brackets (26) projecting at right angles to the longitudinal axis of the crossbar, with which the guy crossbar on the frame (22) can be locked in the snap-in receptacles (25), such that in the locked state a translational displacement of the guy crossbar ( 16) is inhibited along its longitudinal axis. Slab formwork system according to claim 5,
characterized in that both latching brackets (26) are provided at the same end of the guy crossbar at a distance from one another in which a frame section can be accommodated, the shape and the dimension of at least the outside latching bracket (26) being selected such that it is in a special position relative to the locking receptacle, which is complementary in shape and dimension, can be passed through it, and when the traverse (16) is rotated about its longitudinal axis, this locking bracket (26) is also rotated in such a way that it then forms a stop against the frame element in order to translate it to inhibit the guy crossbar (16) along its longitudinal axis. Slab formwork system according to claim 6,
characterized in that both latching brackets are identical in construction, wherein they are offset transversely to the longitudinal axis of the guy crossbar on its outer circumference. Slab formwork system according to one of the preceding claims 2 to 7,
characterized in that the bearing head (14) can be fixed on the vertical support (12) via a flange (32). Slab formwork system according to one of the preceding claims 2 to 8,
characterized in that the guy element (18) comprises a turnbuckle (30). Slab formwork system according to one of the preceding claims 2 to 9,
characterized by a plurality of formwork panels (10) which can be coupled to one another at their end faces, so that the force applied via an anchoring element (18) of a formwork panel (10) can be transmitted to the formwork panels present in the direction of force.

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