EP4056785B1 - Support device, ceiling support, ceiling formwork system and method for stripping a ceiling formwork panel - Google Patents

Description

The invention relates to a support device for a ceiling support for supporting a ceiling formwork panel.

The invention also relates to a ceiling support according to claim 10 and a ceiling formwork system according to claim 12.

The invention also relates to a method for stripping a ceiling formwork panel, which is supported by at least one ceiling prop, according to claim 13.

Ceiling formwork systems for producing ceilings, in particular for concreting concrete ceilings, are known in various designs from the prior art.

Known ceiling formwork systems can, for example, have a system of steel or wooden beams on which formwork panels that form the underside of the concrete ceiling are placed.

The formwork panels can also be attached to a rigid substructure, usually made of steel or aluminum beams. Such a substructure with a formwork panel attached thereto is generally referred to as a panel or as a ceiling formwork panel.

The slab formwork panels can also be made of a polymer.

In the case of building ceilings, the ceiling formwork panel is usually supported by means of support elements, in particular ceiling props. Such ceiling supports are often telescopic so that the ceiling support can be adjusted to different heights. Extensions are also known from the prior art, which can be mounted on an upper end of the ceiling support, usually on an adapter slat located there.

So-called support heads are formed or mounted at the upper end of the ceiling support or at the upper end of the extension of the ceiling support. The support heads can be integral with the ceiling support or an extension of the ceiling support, but it is usually provided that the support heads are detachably mounted. The prop heads extend the slab props axially in the direction of the concrete slab to be created.

The support heads are designed in such a way that they act on the ceiling formwork panels, preferably can hook into suitable structures that are present there, as a result of which such ceiling formwork systems can be set up quickly.

After concreting, the slab formwork system formed by the slab formwork panels and the slab props is under load. When removing the formwork from the at least partially cured building ceiling, ie when removing the ceiling formwork panels after the concrete of the building ceiling has set, this load means that the ceiling formwork panels can only be loosened with difficulty. In order to facilitate stripping, it is known from the prior art to provide lowering devices that make it possible to lower the slab formwork panels a few centimeters from the underside of the building slab so that the contact pressure on the slab supports is eliminated.

A spindle device, which the ceiling supports typically have, can be used to lower the ceiling supports and thus to lower the support head.

From the prior art, for example DE 10 2018 203 612 A1 , Other lowering devices that can be used additionally or alternatively are known.

Furthermore, from the WO 2018/233993 A1 a method for stripping a ceiling formwork panel is known, for which reference is made in particular to the description of FIGS. 1a to 1f. From the WO 2018/233993 A1 a support head with lowerable support height for a ceiling support is also known.

In general, concrete pavements are made in such a way that their surface is horizontal.

For concreting sloping concrete slabs, it is known from the prior art to use support heads which can be pivoted according to the desired inclination of the concrete slab and can be fixed in the pivoted position. For this, on the WO 2008/061501 A1 and the DD 254 045 A1 referred.

It is known from the prior art to install ceiling formwork systems, in particular using ceiling formwork panels, from above when constructing them.

The insertion of ceiling formwork panels from above is comparatively easy, but not optimal in terms of safety.

It is therefore also known from the prior art to mount ceiling formwork panels, in particular large-panel ceiling formwork, from below, that is to say from a lower level. The ceiling formwork panels can be swiveled upwards from a safe position from a lower level. After swiveling up, the ceiling formwork panel is then supported by a ceiling prop with a suitable support head. In order to swivel up the ceiling formwork panel, it is usually provided that a side edge of the ceiling formwork panel to be swiveled up is hooked onto a ceiling support that has already been erected. The ceiling formwork panel can then be swiveled up with a formwork aid, which is generally a telescopic rod.

Irrespective of whether the shuttering was carried out from above or below, the formwork for the slab formwork panels is stripped downwards, since stripping upwards is not possible due to the concrete slab. In order for the formwork to be removed from the ceiling formwork panels, the ceiling supports must first be lowered at least along one side edge of the ceiling formwork panels to such an extent that they no longer engage in the ceiling formwork panels.

A problem when stripping ceiling formwork panels is that when the ceiling formwork panels are pivoted away or pivoted down, the supporting heads of the ceiling props, which were previously lowered, are in the pivoting path. This makes it difficult to simply and safely dismantle the slab formwork panels.

The prop heads are usually lowered by the spindle mechanism of the floor props. However, the spindle travel is limited and is generally not sufficient to completely remove the support head from the pivoting path of the ceiling formwork panels. In addition, unscrewing is such that the support head is no longer in the pivoting path of the ceiling formwork panels, strenuous and time-consuming.

Alternatively, it is possible to completely remove the slab prop before swinging the slab formwork panel. However, this solution also has disadvantages, particularly when the ceiling supports are scaffolding standards that are constructed in a scaffolding system, the ceiling supports (scaffolding standards) may not be able to be removed.

For further prior art is also on the EP 3 401 463 A1 referenced, which discloses a support device for a ceiling prop for supporting a ceiling formwork panel, the support device having a support element which can be pivoted between a working position and a tilted position, the support element supporting the ceiling formwork panel in the working position.

The present invention is therefore based on the object of creating a support device for a ceiling prop for supporting a ceiling formwork panel, which allows simple and safe stripping or simple and safe dismantling of the ceiling formwork panel.

The present invention is also based on the object of creating a ceiling prop that enables a simple and safe stripping or a simple and quick dismantling of a ceiling formwork panel.

The invention is also based on the object of creating a ceiling formwork system which enables simple and safe stripping or simple and safe dismantling of a ceiling formwork panel.

Furthermore, the present invention is based on the object of providing a method for stripping a ceiling formwork panel, with which the ceiling formwork panel can be easily and safely stripped or dismantled.

The support device according to the invention for a ceiling prop for supporting a ceiling formwork panel has at least one upper elongate support element and one lower elongate support element. The support elements are pivotally connected to one another, the support elements being able to be brought into a working position in which the support elements are preferably aligned coaxially with one another, and the support elements being pivotable into a tilted position in which the support elements are tilted by a tilting angle with respect to one another. A locking element is provided, which secures the support elements against pivoting in the working position, with the locking element bridging a connecting region between the two supporting elements in the working position. The locking element can be brought into a release position in which the locking element is arranged outside of the connection area.

Insofar as the terms "above" and "below" are used within the scope of the invention, this refers to a design-specific or correct use of a ceiling prop or the support device according to the invention for a ceiling prop.

The ceiling support can in particular be a scaffolding post or a vertical post. The ceiling support can also have a scaffolding post or a vertical post as a component.

The inventor has recognized that an advantageous, in particular a simple and safe stripping of a ceiling formwork panel is possible if a support device for a ceiling prop is designed in such a way that it has at least one upper elongated support element and one lower elongated support element which are pivotably connected to one another. This makes it possible to align the support device in a working position in such a way that it can absorb the weight forces that arise when creating a concrete slab, in particular when concreting a concrete slab, in the usual way. For this purpose, the support elements in the working position are preferably aligned parallel, in particular coaxially, to one another, so that the forces that occur can be advantageously transmitted.

In the working position, the support elements are generally aligned in such a way that they run coaxially to the longitudinal axis of the ceiling support.

If the ceiling to be produced runs in a horizontal plane, it is usually provided that the supporting elements are aligned orthogonally to the underside of the ceiling to be produced and are therefore also aligned orthogonally to the underside of the ceiling formwork panels. If a sloping ceiling is to be produced, it can preferably be provided that the support elements are not aligned orthogonally to the ceiling to be produced or the underside of the ceiling formwork panels, but run at an angle to the orthogonal. However, the support elements are preferably aligned coaxially with the ceiling support, which is preferably placed orthogonally on a plane which is located below the ceiling to be constructed.

According to the invention, it is provided that the support elements are connected to one another in such a way that the support elements can be pivoted into a tilted position. Preferably, the upper elongate support element is swung out. This makes it possible to pivot a support head, which is connected to the upper elongate support element, in such a way that the support head is no longer in the pivoting path of the ceiling formwork panels when they are pivoted downwards for the purpose of stripping.

According to the invention it is provided that the elongate support elements are secured against pivoting in the working position.

Reliable protection against unintentional pivoting of the support elements when they are in the working position is important for operational safety.

In the working position, it must be ensured that the forces to be absorbed can be reliably absorbed. For this purpose, a locking element is provided according to the invention, which secures the support elements against pivoting.

It is provided that the locking element bridges a connecting area between the two support elements in the working position. This reliably prevents the support elements from pivoting unintentionally into the tilted position. Furthermore, the stability of the two support elements in the working position is supported by bridging the connection area.

Bringing the supporting elements into a tilted position, in particular by tilting the upper supporting element by a tilting angle relative to the lower supporting element, can be achieved in a simple manner according to the invention by arranging the locking element outside of the connection region, preferably by displacing it accordingly. The result of this is that the locking element no longer covers the connection area, as a result of which the two support elements can be pivoted relative to one another, for example using a corresponding joint.

The feature that the locking element is arranged outside the connection area is to be understood within the scope of the invention in particular that the locking element does not prevent pivoting of the support elements relative to one another or that the locking element does not intersect a plane of the connection area. The locking element is preferably displaced in such a way that it is located above the connection area and preferably extends no further downwards than the upper support element. This solution has the advantage that the locking element does not move independently into the release position.

Alternatively, it can also be provided that the locking element is located below the connection area in the released position, preferably in such a way that the locking element does not extend further upwards in the direction of the connection area, like the lower support element.

In order to move the locking element, it is preferably provided that the locking element performs a movement that runs parallel to the longitudinal axis of the upper support element and/or the longitudinal axis of the lower support element, with the longitudinal axes of the support elements preferably being aligned coaxially with one another in the working position.

In order to bring the locking element into a release position, it is also conceivable for the locking element to be constructed in two parts, with a first locking part being pushed upwards and a second locking part being pushed downwards in order to arrange the locking element as a whole outside of the connection area. In this solution it can be provided in the working position that the first locking part locks with the second locking part.

Due to the fact that the support device is designed to be pivotable or pivotable away, it is possible to pivot the ceiling formwork panels away without colliding.

The support device according to the invention also simplifies shuttering or assembly of the ceiling formwork panels from below by prior pivoting away of the support device or the upper elongate support element. This means that shuttering from below can be carried out effectively, efficiently and safely.

The shuttering and shuttering of the slab formwork panels can thus be carried out from a safe position from below.

According to the invention it is provided that in the working position the locking element extends from a lower end area of the upper support element to an upper end area of the lower support element and thereby bridges the connection area.

Because the locking element extends from a lower end area of the upper support element to an upper end area of the lower support element, the connection area can be bridged in a particularly advantageous manner, which prevents the upper support element from being accidentally pivoted out of the working position and also the support elements in the Working position can be additionally stabilized.

It is also advantageous if the locking element rests at least in sections on an inner wall and/or an outer wall of the support elements in the working position.

Preferably, the locking element is in close contact with the inner wall and/or the outer wall of the support element.

Due to the fact that the locking element in the working position rests at least in sections on an inner wall and/or an outer wall of the upper and lower support element, the support elements are particularly advantageously stabilized. In one embodiment, the locking element can be designed in such a way that it surrounds the two support elements on the outside or bears against the outer walls of the support elements.

The locking element can, for example, be rod-shaped or plate-shaped and can surround the support elements on the outside.

The locking element can have one or more locking members, for example several rod- or plate-shaped members. If necessary, the locking members can also be connected to one another, for example in order to form a cage which encompasses the support elements on the outside. In a particularly advantageous embodiment, which is explained in more detail below, it can be provided that the locking element is tubular or sleeve-shaped, for example as a support sleeve or sliding sleeve.

In one embodiment, it can also be provided that the locking element bears against an inner wall of the support elements. For this purpose, the support elements can be tubular, for example. The locking element can be arranged within the tubular support elements. For operation, it can be provided, for example, that one or both support elements have a slot through which an operating part, which is connected to the locking element arranged inside the tubular support elements, protrudes in order to move the locking element along the longitudinal axes of the support elements, in particular upwards and downwards , to move.

It is advantageous if the locking element forms a guide with the support elements in order to move the locking element between the working position and the release position in a guided manner.

It has proven to be advantageous if the locking element and the support elements are designed in such a way that they form a guide in order to be able to move the locking element in a guided and defined manner from the working position into the release position. This can be a rail guide or a linear guide, for example. However, other configurations, in particular form-fitting configurations, are also possible, which enable a defined displacement of the locking element, preferably along the longitudinal axes of the support elements, in particular coaxially, from the working position into the release position.

According to the invention, it can also be provided that the outer diameters of the support elements are essentially identical, preferably identical, at least in the end areas adjoining the connection area.

It has turned out to be advantageous if the support elements have an identical outer diameter or an identically designed outer circumference. It is particularly advantageous if the support elements have an identical outer diameter at least in the end areas in which they adjoin the connection area, ie the upper end area of the lower support element and the lower end area of the upper support element. The loads can thus be advantageously absorbed and the locking element can also be moved particularly advantageously, in particular if this is designed in such a way that the locking element bears against the outer walls of the support elements, preferably circumferentially.

In principle, it is also possible for the support elements to have different outer diameters. Provision can be made here, for example, for the lower support element to have a larger outside diameter than the upper support element. Insofar as it is provided that the locking element encompasses the support elements on the outside, it can be provided that the locking element is designed as a sleeve which has two different outer diameters, so that in the working position the sleeve sits on the shoulder of the lower support element formed by the increase in diameter and after can be displaced up in the direction of the upper support member in the release position.

According to the invention, it can also be provided that the outside diameter of the connecting area is the same as or smaller than the outside diameter of the lower end area of the upper support element and/or the upper end area of the lower support element.

Because the outer diameter of the connection area is the same size as or smaller than the outer diameter of one of the support elements or preferably both support elements, the locking element can be brought into the working position in a particularly simple manner in such a way that the locking element closes the connection area between the two support elements bridged or covered.

According to the invention, it can also be provided that the lower support element is a lower support tube and/or the upper support element is an upper support tube.

It has turned out to be particularly suitable if the support elements are designed as support tubes, that is to say tubular. The lower support element is thus preferably designed as a lower support tube and the upper support element as an upper support tube.

In order to simplify the description, reference is mainly made below to an embodiment of the support elements as support tubes. However, it should be pointed out that the features that are shown with regard to the support tubes can also be provided as support elements in the case of a general design of the support tubes, unless this is structurally excluded. Conversely, it applies accordingly that features that are mentioned with regard to the support elements are particularly and particularly advantageously suitable if the support elements are support tubes.

The locking element provided according to the invention can be used in a particularly advantageous manner with support tubes, both in such a way that the locking element bears against an inner wall of the support tubes—at least in sections—and in such a way that the locking element bears on an outer wall of the support tubes—at least in sections , to secure the support tubes against unintentional swiveling in the working position.

It is advantageous if the locking element is a displaceable support sleeve.

A design of the locking element as a displaceable support sleeve has proven to be particularly suitable. A support sleeve can be designed in a simple manner in such a way that it bridges the connection area in the working position and can be displaced from there into a release position. The support sleeve can also be designed in a simple manner in such a way that at least sections of it bear against the outer walls of the end regions of the support elements in order to stabilize the support tubes in relation to one another in the working position. The formation of a guide between the locking element and the support elements in order to move the locking element between the working position and the release position is also possible in a simple manner.

The use of a support sleeve is particularly advantageous if the support elements are support tubes.

The support sleeve is preferably designed as a sliding sleeve.

It is advantageous if the support sleeve in the working position encompasses the lower end area of the upper support tube and the upper end area of the lower support tube at least in sections on the outside, preferably fitting snugly.

A design of the support sleeve such that it encompasses the lower end area of the upper support tube and the upper end area of the lower support tube at least in sections on the outside has proven to be particularly suitable. The inner wall of the support sleeve preferably rests closely against the outer walls of the support tubes, so that these are stabilized, particularly in the working position.

According to the invention, it can also be provided that the support sleeve is displaceable coaxially with respect to the upper support tube and/or the lower support tube in order to bring the support sleeve into the release position.

It has proven to be particularly suitable if the support sleeve and the support tubes are designed in such a way that the support sleeve can be moved or brought from the working position to the release position by a movement that runs coaxially to the support tubes, i.e. along the longitudinal axes of the support tubes is. Such a movement can also be carried out particularly easily for the user.

It is also advantageous if the lower support tube has a stop, preferably a stop ring, on which a lower front end of the support sleeve rests in the working position.

The formation of a stop, in particular a stop ring or at least a partially ring-shaped stop segment, which runs completely around the lower support tube on the outside, has proven to be particularly suitable for reliably defining the position that the support sleeve should assume in the working position. The stop can also advantageously be designed as a partially ring-shaped stop segment, particularly if the lower support tube has a cross section that deviates from the circular shape, it also being possible for several stop segments to be provided.

According to the invention, it can be provided that the support sleeve has an operating element, for example a projection, an overhang or preferably an operating ring, which runs around the support sleeve on the outside, preferably in the shape of a ring or part of a ring, so that an operator can operate the support sleeve particularly easily, in particular coaxially from the working position can move to the release position.

According to the invention, it can also be provided that the tilting angle between the upper support element and the lower support element in the tilted position is 5 to 90 degrees, preferably 10 to 80 degrees, more preferably 15 to 70 degrees and particularly preferably 20 to 60 degrees, very particularly preferably 20 to 45 degrees, in particular 30 to 35 degrees, in particular 32.5 degrees.

The aforementioned values for the tilting angle, in particular an angle of 30 to 35 degrees, have proven to be particularly suitable in order to ensure that a support head, which is formed on the upper support tube or can be attached to the upper support tube, is out of the pivoting path of the slab formwork panels can be swung out.

It is advantageous if the support device is designed in such a way that the support tubes can only assume two stable positions, the first position being the working position, which is secured by the locking element, in particular the support sleeve, and the second position being the tilted position. This means that the two support tubes are either in the working position or are pivoted out to the maximum and assume the tilted position, with the tilting angle relative to the working position being particularly preferably between 30 and 35 degrees, in particular 32.5 degrees.

According to the invention, it can also be provided that an upper front end of the lower support element has a bevel.

It has turned out to be particularly suitable if an upper front end of the lower support element, in particular in an embodiment as a support tube, has a bevel, ie an angle cut.

The bevel or angle cut makes it possible to bring the upper support element, in particular an upper support tube, from the working position into the tilted position in a particularly simple manner. A lower front end of the upper support element can rest against the bevel of the upper front end of the lower support tube in the tilted position. This results in stable positioning of the support tubes in the tilted position.

It is advantageous if the bevel is designed in such a way that 40% to 90%, preferably 50% to 90%, in particular 50% to 75%, of the upper front end of the lower support element is provided with a bevel.

The aforementioned values for the beveling of the upper front end of the support element or the support tube have proven to be particularly suitable. Especially at a configuration in which 50% to 60% of the upper front end is provided with a bevel, it has been shown that the pivoting movement can be carried out particularly advantageously and the non-beveled portion of the front end is still large enough to allow the through to be able to absorb compressive forces occurring during the pouring of the concrete slab.

The pivoting movement between the support tubes can be implemented, for example, by a rotary joint, a ball joint, a hinge or the like. In a special way, it can also be suitable if the pivoting movement is realized by a slotted guide.

It is advantageous if the support tubes are pivotably connected to one another via a pivot.

The connection of the support tubes via an axis of rotation has proven to be particularly suitable, since a defined movement that is also not susceptible to damage can be implemented in this way.

It is advantageous if one of the support tubes has bores, preferably elongated holes, in order to fix the axis of rotation.

Fixing the axis of rotation in bores, preferably oblong holes, in a support tube has proven to be particularly suitable for achieving reliable and safe pivoting of the support tubes. The formation of the bores as elongated holes makes it possible in an advantageous manner that a lifting movement can also be carried out when the upper support tube is pivoted from the working position into the tilted position. This facilitates the pivoting process.

The elongated holes enable or support an advantageous pivoting of the upper support tube in relation to the lower support tube. To do this, the upper support tube is moved vertically a little or a small distance along the length of the elongated holes, resulting in a height difference compensation when tilting.

The slotted holes also prevent forces from being transmitted to the axis of rotation passed through the slotted holes. For this purpose, it is preferably provided that the axis of rotation always has vertical play in the elongated holes. The axis of rotation is arranged in the elongated holes in such a way that no forces, in particular no pressure forces, act on it when the support head is in the working position, ie is not pivoted. The axis of rotation and the elongated holes are therefore designed in such a way that the axis of rotation has vertical play in the elongated holes in the working position upwards and preferably also downwards.

This ensures that the compressive forces are only transmitted from the upper support tube to the lower support tube.

The axis of rotation is preferably designed as a bolt.

According to the invention, it can also be provided that a connecting element is fixed to one of the support tubes, preferably to an inner wall of the support tube, and the connecting element has one or more bores through which the axis of rotation fixed to the other support tube is guided in such a way that the connecting element the axis of rotation can be pivoted.

Because a connecting element is fixed to one of the support tubes and this has bores through which the axis of rotation, which is fixed to the other support tube, can be passed, a particularly stable and safe pivoting movement can be implemented, which is particularly useful in robust applications of the support device on a construction site has proven to be suitable. The connecting element can have any suitable shape, preferably such that the connecting element can be fixed to an inner wall of the support tube, preferably such that the connecting element can be fixed to two opposite inner wall sides of the support tube.

For this purpose, the connecting element and the support tube can have corresponding fastening bores, with the aid of which the connecting element can be connected to the support tube.

The connecting element can preferably be a profile element, in particular with a design that is essentially rectangular in cross section, wherein the outer contour can optionally be adapted to the curvature of the inner wall of the support tube, for which it can be sufficient if the longitudinal running side edges of the connecting element are flattened or provided with a radius. The connecting element can preferably be tubular.

It is advantageous if an outer contour of the connecting element is adapted at least in sections to an inner contour of the upper support element, preferably in such a way that the outer contour bears against the inner contour of the upper support element at least in two sections, preferably in three sections, preferably in such a way that at least 5% of the outer contour of the connecting element bears against the inner contour of the upper support element.

The aforementioned configuration has proven to be advantageous in order to realize a secure connection of the connecting element to the upper support element. Provision can be made for the outer contour of the connecting element and the inner contour of the upper support element to be designed in such a way that the connecting element is secured against rotation in the upper support element.

According to the invention, it can also be provided that the connecting element has at least two, preferably exactly two, parallel and spaced apart surfaces, in each of which one of the bores is introduced in such a way that the bores guide the axis of rotation in a defined manner.

The connecting element can also be designed as a hinge or as a T-profile.

It is advantageous if an outer circumference of the lower support tube and/or an outer circumference of the upper support tube and an inner circumference of the support sleeve have a circular cross-section or a non-circular cross-section, preferably a lemon-shaped cross-section (lemon shape), a rectangular cross-section, a triangular cross-section, a triangular lemon-shaped cross-section, a star-shaped cross-section or a polygonal cross-section.

A configuration of the lower support tube and the upper support tube as well as the support sleeve in such a way that they have a circular cross section can be achieved in a particularly simple and cost-effective manner. However, it has proven to be advantageous if the outer circumference of the lower support tube and/or the outer circumference of the upper support tube and the inner circumference of the support sleeve have a cross section that deviates from the circular shape. This has the advantage that the support sleeve, the inner circumference of which rests, preferably tightly, against the outer circumference of the support tubes in the working position, can absorb torsional forces so that the support sleeve largely prevents the support tubes from twisting relative to one another. This in particular avoids the connection provided for pivoting between the two support tubes, in particular a pivot axis, being loaded with forces that could lead to damage.

The non-circular cross-section may preferably be a lemon-shaped cross-section. However, an elliptical cross section, any desired polygonal cross section, in particular a triangular cross section, or a quadrangular cross section, in particular a rectangular cross section, is also possible.

According to the invention, it can also be provided that the outer diameter of the upper support tube and/or the lower support tube with a circular cross section is 40 to 80 mm, preferably 40 to 70 mm, in particular 40 to 60 mm, preferably 50 mm +/- 2 mm, or in the case of a non-circular cross-section, the length of a long axis of the cross-section of the upper support tube and/or the lower support tube is 40 to 80 mm, preferably 40 to 70 mm, in particular 40 to 60 mm, preferably 51 mm +/- 2 mm and the length of a short axis of the cross section is 5 to 25 mm shorter, preferably 17 mm +/- 2 mm.

The aforementioned values for the outer diameter of the upper support tube and/or the lower support tube have proven to be particularly suitable so that the support device can absorb the forces that occur and an advantageous pivoting of the upper support tube into the tilted position is possible. Of course, other values are also possible here.

It is advantageous if the wall thickness of the upper support tube and/or the wall thickness of the lower support tube and/or the wall thickness of the support sleeve is 2 to 8 mm, in particular 3 to 6 mm, preferably 3 to 5 mm, in particular 3.5 to 4 is 5 mm.

The aforementioned values have proven to be suitable for the support device to be able to absorb the forces in a suitable manner.

It is advantageous if the support tubes together have a length of 200 to 600 mm, preferably 300 to 500 mm, in particular 350 to 450 mm.

The aforementioned values for an overall length of the upper and lower support tubes have proven to be particularly suitable. The above values are also generally suitable for an upper support element and a lower support element.

It is advantageous if the length of the upper support tube is at least 1.5 times, preferably 2 times, the length of the lower support tube and/or the length of the upper support tube is less than 4 times, preferably is less than 3 times the length of the lower support tube.

The aforementioned values have also turned out to be particularly suitable for ensuring the most stable possible construction of the support device and for enabling the upper support tube to be pivoted out in such a way that a support head is no longer in the pivoting path of the floor formwork panel when it is being shuttered or shuttered.

It is advantageous if the lower support tube is designed as a support foot, that is, in addition to a tubular design, a preferably plate-shaped support is also provided. The plate-shaped support can be welded to the support tube or connected in some other way, preferably with a material fit. A one-piece design is also possible. The plate can have holes with the help of which the plate and thus the support leg can be easily and detachably fixed to the top of a ceiling support. The plate can thus be designed as an adapter surface or as an adapter element.

It is advantageous if a spindle device is provided in order to change the overall length of the support device and the ceiling support.

Spindle devices for changing the length of a ceiling support are known in principle from the prior art. In particular, this can involve so-called head spindles. The spindle device can be formed both on the ceiling support and on the support device or also on an extension of the ceiling support. The function of the spindle device is to change the overall length of the support device and the ceiling support, in particular to ensure that a support head fixed to the support device can be raised and lowered, in particular to bring it into engagement with the ceiling formwork panels.

It is advantageous if an upper end area of the upper support element has an upper adapter element for releasably fixing a support head for the ceiling formwork panel or if a support head for the ceiling formwork panel is formed on an upper end area of the upper support element.

It has proven to be particularly suitable if an upper end area of the support element has an upper adapter element to which a support head for the ceiling formwork panel can be fixed. The upper adapter element can preferably be designed in the form of a plate and preferably have a plurality of bores to which the correspondingly designed support head can be fixed. This solution makes it possible with the support device to use different support heads. The support heads can be designed for the corresponding intended task and in particular can be adapted to the corresponding ceiling formwork panel. The support heads can be, in particular, a support head made of steel or polymer, but also a so-called lowering head, preferably made of steel.

In an alternative embodiment, it can also be provided that the support head is formed in one piece with the upper end area of the upper support element, ie the support head is permanently connected to the upper end area of the upper support element.

It is advantageous if a lower end region of the lower support element has a lower adapter element for detachable attachment to the ceiling support or if the ceiling support, an extension of the ceiling support or a spindle device is formed on a lower end region of the lower support element.

It is advantageous if the lower end region of the lower support element has a lower adapter plate, with the aid of which the lower support element can be detachably fastened to the ceiling support. The lower adapter element can preferably be designed as a plate. In particular, as already mentioned above, it can be provided that the lower support element is designed as a support foot and thus already has the lower adapter element. The lower adapter element makes it possible to connect the support device to a ceiling support and to disconnect it again as required.

Alternatively, it can also be provided that the ceiling support, an extension of the ceiling support or a spindle device, for example a head spindle, is designed in one piece or cannot be detached from a lower end region of the lower support element.

It is advantageous if the support device is designed as an adapter and/or as an attachment for a detachable connection to an upper end of the ceiling support.

This solution has proven to be particularly suitable for using the support device as required and connecting it accordingly to a ceiling support.

Correspondingly, it can also be provided that the support device is designed as an adapter and/or as an extension or as an attachment for the detachable connection with a support head. The support device can thus be connected to a support head or detached from it again as required.

It can also be provided within the scope of the invention that the support device has a support head or the support head is part of the support device.

According to the invention it can be provided that the ceiling support is a scaffolding post or a part of the ceiling support is formed by a scaffolding post.

The present invention also relates to a ceiling prop with a support device according to one of Claims 1 to 9, the support device preferably having one or more of the aforementioned features.

In the case of the ceiling prop, it can be provided that the support device is detachably fixed to an upper end of the ceiling prop or is designed in one piece with the ceiling prop.

It is advantageous if the ceiling support has a spindle device or a spindle device is provided in order to raise or lower the support device.

The present invention also relates to a ceiling formwork system having at least one ceiling formwork panel, at least one ceiling prop and at least one support device for the ceiling prop according to one of claims 1 to 9, wherein the support device preferably has one or more of the aforementioned features.

The invention also relates to a method for stripping a ceiling formwork panel that is supported by at least one ceiling prop, after which the ceiling prop is first lowered by means of a spindle device to such an extent that a support head, to which the ceiling prop is connected via a pivotable support device, disengages from the ceiling formwork panel is brought, after which the support head is then pivoted by means of the support device by a tilting angle in such a way that the support head is not in a pivoting path of the ceiling formwork panel when it is about a pivot axis that runs along a side edge of the ceiling formwork panel that is not adjacent to the ceiling support is pivoted below.

The method according to the invention has turned out to be particularly suitable for demoulding a ceiling formwork panel safely and reliably. Correspondingly, the method according to the invention can also be used to mount a ceiling formwork panel from below or to enclose it. For this purpose, the support head is first pivoted or tilted away, then the ceiling formwork panel is pivoted up. After the ceiling formwork panel has been pivoted up, the support head is then in a working position pivoted and brought into engagement with the ceiling formwork panel preferably by a spindle device.

The support device, which carries the support head, can preferably be designed in such a way as was described above with regard to the support device according to the invention.

It is advantageous if, in order to swivel the support head, a locking element, which bridges a connecting area between an upper support element and a lower support element, is moved from a working position in which the locking element secures the support elements against swiveling to a release position in which the Locking element is arranged outside of the connection area, preferably such that the locking element is displaced coaxially to the support elements. The support elements are preferably support tubes of the type already described above.

In the context of the method according to the invention, it is advantageous if the upper support element is pivoted about an axis of rotation fixed to the lower support element in order to bring the upper support element into the tilted position.

The method according to the invention for stripping a ceiling formwork panel can preferably have one or more of the following work steps. For better understanding, a distinction is made below between a left-hand ceiling support and a right-hand ceiling support, with the use of the terms only being exemplary in order to clarify the principle.

In a first (optional) work step, a left ceiling support and with it a support device is lowered by 10 to 50 mm, preferably by about 25 mm, preferably by means of a spindle device, in particular having a spindle nut.

In a second work step, a right-hand ceiling support and with it a support device are moved by 25 mm to 100 mm, preferably 35 mm to 70 mm, particularly preferably 40 mm to 55 mm, in particular by approx. 50 mm, using a spindle device, preferably having a spindle nut , lowered. The lowering can also take place over a longer distance, for example up to 500 mm, but this is not preferable, since a spindle over a smaller distance is advantageous.

In a third step, the right-hand side of the ceiling formwork panel is lifted again using a formwork aid, preferably until the edge of the panel touches the concrete ceiling. As a result, the engagement between a support head of the right-hand ceiling support, which is fixed to the support device, and the ceiling formwork panel is released. The support head of the support device of the right ceiling prop is therefore free.

In a fourth step, a support sleeve of the released support device is pushed upwards in such a way that the support sleeve is in the release position. This makes it possible to swivel away an upper support tube or the support head.

In a fifth step, the support head or the upper support tube is pivoted by applying a force, in particular a horizontal force, in the direction "away from the switched-on ceiling formwork panel" up to the tilted position or up to a stop. The support head is pivoted outwards to such an extent that the support head is preferably no longer located below the ceiling formwork panel, which is to be lowered or pivoted away after the support head has been pivoted away. At least the support head is pivoted outwards far enough that it is no longer in the lowering or pivoting path of the ceiling formwork panel.

In a sixth step, the slab formwork panels are pivoted into a vertical position using the formwork aid. The pivoting movement of the ceiling formwork panel takes place about a pivot axis that runs along a side edge of the ceiling formwork panel that is not adjacent to the ceiling support whose support device was pivoted into the tilted position.

The pivot axis results in a known manner from the fact that the ceiling formwork panels are usually attached to at least one, in which two or more ceiling props are suspended, in the exemplary embodiment on two left-hand ceiling props, namely a front left ceiling prop and a rear left ceiling prop, which together share a pivot axis provide when the right ceiling prop, usually two right ceiling props, namely a front right ceiling prop and a rear right ceiling prop, as described above, lowered and their support means are swung out.

The measures described above are usually carried out on two left-hand ceiling props and two right-hand ceiling props.

The above measures can also be carried out on two rear and two front ceiling props.

Ceiling formwork panels usually have a rectangular shape, preferably with a side length of 2 m by 1 m.

With the method according to the invention, a ceiling formwork panel can be swiveled out both on the short side and on the long side, which means that the swivel axis runs both on a short side of the rectangular ceiling formwork panel and on a long side of the ceiling formwork panel. The support heads of the ceiling props that are not adjacent to the pivot axis are tilted outwards, as described above, in such a way that they are not in the pivoting path when the ceiling formwork panel is pivoted down. As a rule, there are two ceiling props, the support heads of which are swiveled out accordingly, but it can also be provided that more than two ceiling props or just one ceiling prop are positioned on the corresponding side.

The method according to the invention for stripping a ceiling formwork panel has been described above with reference to the support device according to the invention. In principle, however, the method according to the invention can be implemented with any pivotable support device that is suitable for pivoting the support head in such a way that the support head is not in a pivoting path of the ceiling formwork panel when the latter is about a pivot axis that runs along a side edge of the ceiling formwork panel. which is not adjacent to the ceiling support, is pivoted downwards.

Features that have been described in connection with one of the objects of the invention, namely given by the support device, the floor prop, the ceiling formwork panel and the method for stripping, can also be advantageously implemented for the other objects of the invention. Advantages that were mentioned in connection with one of the objects of the invention, specifically given by the support device, the floor prop, the ceiling formwork panel and the method for stripping, can also be understood in relation to the other objects of the invention.

In addition, it should be pointed out that terms such as "comprising", "having" or "with" do not exclude any other features or steps. Furthermore, terms such as "a" or "that" which indicate a singular number of steps or features do not exclude a plurality of features or steps - and vice versa.

Figur 1

eine perspektivische Ansicht auf ein Deckenschalungssystem, bei dem exemplarisch vier Deckenschalungspaneele dargestellt sind, die von neun Deckenstützen abgestützt werden, die jeweils mit der erfindungsgemäßen Stützeinrichtung versehen sind;

Figur 2

eine Seitenansicht auf das Deckenschalungssystem nach Figur 1;

Figur 3

eine Seitenansicht auf das Deckenschalungssystem nach Figur 1, wobei zur Darstellung der Ausschalung des rechten, vorderen Deckenschalungspaneels die mittlere vordere Deckenstütze, die die linke Seite des auszuschalenden Deckenschalungspaneels trägt, abgesenkt ist;

Figur 4

eine Darstellung nach Figur 3, wobei die Stützeinrichtung der rechten vorderen Deckenstütze abgesenkt ist, mit einer Darstellung einer Schalhilfe, welche das Deckenschalungspaneel an der rechten Seitenkante abstützt;

Figur 5

eine Darstellung nach Figur 4, wobei ein mit der Stützeinrichtung verbundener Stützkopf nach rechts in eine Verkippstellung verschwenkt ist und das Deckenschalungspaneel abgesenkt ist;

Figur 6

eine perspektivische Ansicht auf die erfindungsgemäße Stützeinrichtung in einer ersten Ausführungsform;

Figur 7

eine Seitenansicht auf die Stützeinrichtung nach Figur 6;

Figur 8

eine weitere perspektivische Darstellung der Stützeinrichtung nach Figur 6;

Figur 9

eine weitere Seitenansicht auf die Stützeinrichtung nach Figur 6;

Figur 10

einen Schnitt nach der Linie X-X der Figur 9;

Figur 11

eine perspektivische Darstellung auf die Schnittdarstellung nach Figur 10;

Figur 12

eine Seitenansicht auf die Stützeinrichtung nach Figur 6;

Figur 13

eine Schnittdarstellung nach der Linie XIII-XIII der Figur 12;

Figur 14

einen Schnitt nach der Linie XIV-XIV der Figur 9;

Figur 15

eine Darstellung einer Stützeinrichtung in einer zweiten Ausführungsform in einer Verkippstellung, wobei die Stützrohre und die Stützhülse einen kreisförmigen Durchmesser aufweisen;

Figur 16

eine Darstellung nach der Linie XVI-XVI der Figur 15;

Figur 17

eine Seitenansicht auf die Stützeinrichtung nach Figur 15;

Figur 18

eine Einzeldarstellung eines unteren Stützrohrs und eines unteren Adapterelements in einer Seitendarstellung mit einer Darstellung der Abschrägung am oberen stirnseitigen Ende des unteren Stützrohrs;

Figur 19

eine perspektivische Darstellung eines oberen Stützrohrs mit einem kreisrunden Querschnitt;

Figur 20

eine perspektivische Darstellung eines Verbindungselements;

Figur 21

eine Darstellung einer Stützeinrichtung, wobei das obere Stützrohr mit einem Stützkopf verbunden ist;

Figur 22

eine Seitenansicht auf eine Stützeinrichtung nach Figur 6, wobei die Stützhülse bis in die Freigabeposition angehoben ist; und

Figur 23

eine Schnittdarstellung nach der Linie XXIII-XXIII der Figur 22.

It shows:

figure 1

a perspective view of a ceiling formwork system, in which four ceiling formwork panels are shown as an example, which are supported by nine ceiling supports, which are each provided with the support device according to the invention;

figure 2

a side view of the ceiling formwork system figure 1 ;

figure 3

a side view of the ceiling formwork system figure 1 , wherein to show the stripping of the right, front ceiling formwork panel, the middle front ceiling support, which carries the left side of the ceiling formwork panel to be stripped, is lowered;

figure 4

a representation after figure 3 12, with the right front slab prop support means lowered, showing a formwork aid supporting the slab formwork panel on the right side edge;

figure 5

a representation after figure 4 wherein a support head connected to the support device is pivoted to the right into a tilted position and the ceiling formwork panel is lowered;

figure 6

a perspective view of the support device according to the invention in a first embodiment;

figure 7

a side view of the support device figure 6 ;

figure 8

a further perspective view of the support device figure 6 ;

figure 9

another side view of the support device figure 6 ;

figure 10

a cut along line XX of figure 9 ;

figure 11

a perspective view of the sectional view figure 10 ;

figure 12

a side view of the support device figure 6 ;

figure 13

a sectional view along the line XIII-XIII of figure 12 ;

figure 14

a cut along the line XIV-XIV of the figure 9 ;

figure 15

a representation of a support device in a second embodiment in a tilted position, wherein the support tubes and the support sleeve have a circular diameter;

figure 16

a representation according to the line XVI-XVI of figure 15 ;

figure 17

a side view of the support device figure 15 ;

figure 18

an individual representation of a lower support tube and a lower adapter element in a side view with a representation of the bevel at the upper front end of the lower support tube;

figure 19

a perspective view of an upper support tube with a circular cross section;

figure 20

a perspective view of a connecting element;

figure 21

a representation of a support device, wherein the upper support tube is connected to a support head;

figure 22

a side view of a support device figure 6 , wherein the support sleeve is raised to the release position; and

figure 23

a sectional view along the line XXIII-XXIII of figure 22 .

Slab formwork systems, slab formwork panels, slab props and support heads and the way they work are from the general state of the art, including the DE 10 2018 203 612 A1 and the WO 2018/233993 A1 is referred to, known in principle, which is why only the essential features of the invention will be discussed in more detail below.

The Figures 1 to 5 show a ceiling formwork system 1, in which four ceiling formwork panels 2 and a plurality of ceiling supports 3 are shown as an example.

The ceiling formwork panels 2 form a formwork in order to be able to produce or cast a ceiling, in particular a storey ceiling, in particular made of concrete.

A support device 4 according to the invention is detachably fixed to an upper end of the ceiling supports 3 in each case. The support device 4 can also be designed in one piece with the ceiling support 3, in particular the upper end of the ceiling support 3.

In the embodiment according to Figures 1 to 5 For example, it is provided that each of the ceiling supports 3 shown there is provided with a support device 4 according to the invention. However, this is optional. If necessary, ceiling supports that are not provided with a support device 4 according to the invention can also be used.

The in the Figures 1 to 5 The ceiling supports 3 shown have a spindle device 5 in order to raise or lower the support device 4 as required. Such spindle devices 5 are known in principle from the general state of the art and typically have a spindle nut, with the aid of which the overall length of the ceiling support 3, in particular the support device 4, can be lengthened or reduced.

At their upper end, the ceiling supports 3 have a fastening element, preferably a fastening plate, to which the support device 4 can be fixed, preferably detachably, as will be explained in more detail below.

A support head 6 is arranged at an upper end of the support device 4 and engages in a basically known manner in a ceiling formwork panel 2 in order to hold it in position. In the exemplary embodiment, the support head 6 is detachably connected to the support device 4 . Alternatively, however, the support head 6 can also be formed in one piece with the support device 4 . A possible embodiment of a support head 6 is also in figure 21 shown.

The Figures 6 to 23 show two advantageous embodiments of the support device according to the invention. In both embodiments it is provided that the support head 6 can be releasably connected to the support device 4 . However, the two exemplary embodiments are to be understood in such a way that the support head 6 can also be designed in one piece with the support device 4 .

In principle, the support head 6 can be part of the support device 4 .

How from the Figures 6 to 23 As can be seen, the support device 4 according to the invention has at least one upper elongate support element 7 and one lower elongate support element 8 . The support elements 7, 8 are pivotally connected to each other.

The Figures 6 to 14 show a representation of the support elements 7, 8 in a working position. In the working position, the longitudinal axes of the support elements 7, 8 preferably run parallel to one another, so that the weight forces to be absorbed by the ceiling to be cast can be advantageously absorbed. In the exemplary embodiment, it is provided that the support elements 7, 8 or their longitudinal axes are aligned coaxially with one another.

The supporting elements 7, 8 can be pivoted into a tilted position in which the supporting elements 7, 8 are pivoted by a tilting angle α with respect to one another. The Figures 15 to 17 show a representation of the support elements 7, 8 in the tilted position.

In the exemplary embodiment, provision is made for the upper support element 7 to be tilted, while the position of the lower support element 8 remains unchanged, ie in the working position as before.

In the figure 5 shows how a support head 6 can be swiveled out when the support elements 7, 8 are swiveled into a tilted position relative to one another.

The support device 4 according to the invention has a locking element 9 which secures the support elements 7, 8 against pivoting in the working position.

The Figures 6 to 13 and the figure 21 show the locking element 9 in the working position, in which it secures the support elements 7, 8 against pivoting. As can be seen from the figures, the locking element 9 bridges a connection area 10 between the two support elements 7, 8 in the working position. The connection area 10 or the articulated connection between the upper support element 7 and the lower support element 8 is thus formed by the locking element 9 covered that the support elements 7, 8 can not be pivoted or are not pivoted into the tilted position.

How from the Figures 15 to 17 as well as the figure 22 can be seen, the locking element 9 can be brought into a release position in which the locking element 9 is arranged outside of the connection area 10, ie in which the locking element 9 no longer bridges the connection area 10 or releases it.

In the exemplary embodiment, it is provided for this purpose that the locking element 9 is moved upwards from the working position until it has reached the release position, that is to say until the locking element 9 is outside of the connection area 10 .

In the exemplary embodiment, it is provided that the locking element 9 extends in the working position from a lower end area of the upper support element 7 to an upper end area of the lower support element 8 and thereby bridges the connection area 10 .

The exemplary embodiment also provides that the locking element 9 and the support elements 7, 8 are designed in such a way that the locking element 9 rests against an inner wall and/or an outer wall of the support elements 7, 8 in the working position. The exemplary embodiment shows that the locking element 9 rests against the outer walls of the support elements 7, 8 in the working position.

In the exemplary embodiment it is also provided that the locking element 9 forms a guide with the support elements 7, 8 in order to move the locking element 9 between the working position and the release position in a guided manner. This is preferably a linear guide that enables the locking element 9 to be displaced along the longitudinal axes of the support elements 7, 8, in particular coaxially.

In the embodiment shown in the Figures 6 to 13 and the Figures 22 and 23 is shown, it is provided that the locking element 9 and the support elements 7, 8 are designed in such a way that, in addition to a linear guide, there is also a guide that secures the locking element 9 against twisting relative to the support elements 7, 8.

In the exemplary embodiments, it is provided that the outer diameters or the outer circumferences of the support elements 7 , 8 are identical at least in the end areas of the support elements 7 , 8 adjoining the connection area 10 . This makes it possible to move the locking element 9 back and forth particularly easily between the working position and the release position.

The exemplary embodiment also provides that the outer diameter of the connecting area 10 is the same as or smaller than the outer diameter of the lower end area of the upper support element 7 and/or the upper end area of the lower support element 8.

The features in the exemplary embodiment are to be understood in such a way that the support elements 7, 8 and also the locking element 9 can be designed arbitrarily within the scope of the disclosure. In the exemplary embodiment, however, a particularly preferred embodiment of the support elements 7, 8 and the locking element 9 is shown. However, the specific disclosure in the exemplary embodiment is also to be understood as a general disclosure for a configuration of the support elements 7 , 8 and the locking element 9 .

In the exemplary embodiment, the upper support element is in the form of an upper support tube 7 and the lower support element is in the form of a lower support tube 8 . Furthermore, the locking element is designed as a displaceable support sleeve 9 in the exemplary embodiment.

The support sleeve 9 can also be a sliding sleeve.

The support sleeve 9 is designed such that this in the working position, as in the Figures 6 to 13 shown, the lower end area of the upper support tube 7 and the upper end area of the lower support tube 8 at least in sections, preferably snugly. In the exemplary embodiment, the support sleeve 9 in the working position completely surrounds the lower area of the upper support tube 7 and the upper end area of the lower support tube 8 on the outside.

In the exemplary embodiments, the support sleeve 9 can be displaced coaxially with respect to the upper support tube 7 and the lower support tube 8 in order to bring the support sleeve 9 into the release position.

In order to be able to move the support sleeve 9 easily, it preferably has an operating element, in particular an operating ring 9a running around the outer wall of the support sleeve 9 .

As can also be seen from the exemplary embodiments, the lower support tube 8 has a stop against which a lower front end of the support sleeve 9 rests in the working position. In the exemplary embodiment, the stop is a stop ring 11 (e.g. figure 18 ) formed, which runs around the outer circumference of the lower support tube 8 in the form of a ring or part of a ring.

The tilting angle α between the upper support element 7 and the lower support element 8 in the tilted position can be selected such that it is ensured that the support head 6 is pivoted far enough so that the ceiling formwork panel 2, as is the case in principle Figures 4 and 5 is shown, can be swung down. It has proven to be particularly suitable if the tilt angle α is 5 to 90 degrees, preferably 10 to 80 degrees, more preferably 15 to 70 degrees and particularly preferably 20 to 60 degrees, very particularly preferably 20 to 45 degrees, in particular 30 to 35 degrees , specifically 32.5 degrees. In the exemplary embodiment, an angle of 32.5 degrees is provided.

In the exemplary embodiment, no further intermediate positions are provided between the working position and the tilted position, in which the support tubes 7, 8 are fixed or can be fixed to one another.

In the working position, the support tubes 7, 8 are fixed to one another with the aid of the support sleeve 9. In the tilted position, the support tubes 7, 8 are in a stable position due to gravity, which can be canceled again by the upper support tube 7, preferably from Hand, is raised again, so that the upper support tube 7 is again coaxial with the lower support tube 8 and can be secured by the support sleeve 9 in this position.

In the exemplary embodiment, the tilted position results from the fact that an upper front end of the lower support tube 8 has a bevel 12 or an angle cut. The bevel 12 is designed in such a way that 40% to 90%, preferably 50% to 90%, in particular 50% to 75%, of the upper front end of the lower support tube 8 is not provided with a bevel 12 .

The bevel 12 is particularly good in the Figures 10, 11 , 16 to 18 and 22 evident. In the tilted position, a lower front end of the upper support tube 7 rests against the bevel 12, resulting in a stable positioning of the two support tubes 7, 8 in the tilted position.

In the exemplary embodiment, it is provided that the support tubes 7 , 8 are pivotably connected to one another via a pivot axis 13 . For this purpose it is provided that one of the support tubes, in the exemplary embodiment the lower support tube 8 , has bores 14 in order to fix the axis of rotation 13 . The holes are designed as slots 14 in the embodiment.

The elongated holes 14 allow or support an advantageous pivoting of the upper support tube 7 relative to the lower support tube 8. For this purpose, the upper support tube 7 is slightly or a small distance vertically along the length of the elongated holes 14, which results in a height difference compensation when tilting.

The elongated holes 14 also prevent forces from being transmitted to the axis of rotation 13 passed through the elongated holes 14 . For this purpose, it is preferably provided that the axis of rotation 13 always has vertical play in the elongated holes 14 . The axis of rotation 13 is arranged in the elongated holes 14 in such a way that no forces, in particular no compressive forces, act on it when the support head 6 is in the working position, ie is not pivoted. The axis of rotation 13 and the slots 14 are therefore designed in such a way that the axis of rotation 13 has vertical play in the slots 14 upwards and preferably also downwards in the working position.

This ensures that the compressive forces are only transmitted from the upper support tube 7 to the lower support tube 8 .

The axis of rotation 13 is preferably designed as a bolt.

A connecting element 15 is fixed to the other support tube, in the exemplary embodiment the upper support tube 7 . The connecting element 15 is shown individually in FIG figure 20 shown. In the exemplary embodiment, the connecting element 15 is fixed to an inner wall of the support tube 7 . This is particularly in the Figures 10, 11, 13 and 16 shown, where the Figures 10, 11 and 13 one of figure 20 different design of the connecting element 15 shows.

To fix the connecting element 15 to the inner wall of the upper support tube 7, it can preferably be provided that the outer contour of the connecting element 15 is adapted to the radius of the inner wall of the support tube 7, for which it can be sufficient as in figure 20 shown when the longitudinal edges of the connecting element 15 are beveled or provided with a radius.

As shown in the exemplary embodiments, the connecting element 15 has one or more bores, in the exemplary embodiment exactly two bores 15a, through which the axis of rotation 13 fixed to the lower support tube 8 is guided in such a way that the connecting element 15 can be pivoted about the axis of rotation 13.

As an alternative to the axis of rotation 13 and the elongated holes 14, a link guide can also be provided for carrying out the pivoting movement.

In the exemplary embodiment it is also provided that the connecting element 15 has bores 15b, with the aid of which the connecting element 15 can be fastened to the upper support tube 7 .

In the exemplary embodiment it is provided that the upper support tube 7 has bores 7a for attachment to the connecting element 15 .

The Figures 6 to 14 and the Figures 22 to 23 show an embodiment of the support device 4, in which the outer circumference of the support tubes 7, 8 and the inner circumference of the support sleeve 9 have a non-circular cross-section, in the exemplary embodiment a lemon-shaped cross-section. Other cross-sectional shapes are also possible, for example a polygonal cross-section, a rectangular cross-section, a square cross-section or a triangular cross-section. Because the support tubes 7, 8 and the support sleeve 9 have a cross section that is not circular, preferably lemon-shaped, torsional forces resulting from twisting between the support tubes 7, 8 can be absorbed, thereby increasing the stability of the support tubes 7, 8 is improved in particular in the working position and in particular it is avoided that forces, in particular the aforementioned torsional forces, act on the axis of rotation 13, which can lead to damage there.

The embodiment according to Figures 15 to 19 and after figure 21 shows a representation in which the outer circumference of the support tubes 7, 8 and the inner circumference of the support sleeve 9 is circular in cross section. Such a design is particularly inexpensive.

It should be pointed out that, with the exception of these differences, all of the features which are illustrated in the exemplary embodiment can be implemented in both exemplary embodiments without this requiring separate mention.

In the exemplary embodiment, it is provided that the outer diameter of the support tubes 7, 8 with a circular cross section is 40 to 80 mm, preferably 40 to 70 mm, in particular 40 to 60 mm, preferably 50 mm +/- 2 mm. If the cross section is not circular, in particular if the cross section is lemon-shaped, the length of a long axis of the cross section of the support tube 7, 8 can be 40 to 80 mm, preferably 40 to 70 mm, in particular 40 to 60 mm, preferably 51 mm + /- 2 mm, the length of a short axis of the cross section can be 5 to 25 mm, preferably 17 mm +/- 2 mm shorter.

In both exemplary embodiments, it is advantageous if the wall thickness of the support tubes is at least 2.5 mm, preferably at least 3 mm, in particular at least 3.5 mm. Furthermore, it can be provided that the wall thickness is preferably less than 6 mm, in particular less than 5 mm, preferably less than 4.6 mm. Wall thicknesses between 3.5 mm and 4.5 mm, in particular 4.5 mm, are particularly advantageous. These values have proven to be particularly suitable for ensuring that, despite the bevel 12 in the working position, the weight of the ceiling to be cast can be reliably absorbed.

In both embodiments, it is advantageous if the support tubes 7, 8 together have a length of 200 to 600 mm, preferably 300 to 500 mm, more preferably 300 to 400 mm, very particularly preferably 340 to 360 mm, in particular 348.5 mm + /- have 2 mm.

Furthermore, it has proven to be advantageous if the upper support tube 7 has a length that is greater than the length of the lower support tube 8. The length of the upper support tube 7 is preferably at least 1.5 times, preferably at least 1.8 times -Fold the length of the lower support tube 8. It is also advantageous if the length of the upper support tube 7 is less than 4 times, preferably less than 3 times, the length of the lower support tube 8. Is advantageous it when the length of the upper support tube 7 is 2 to 3 times, in particular 2 to 2.5 times, particularly preferably exactly 2 times the length of the lower support tube 8 .

In the exemplary embodiment, it is provided that the spindle device 5 is designed as part of the ceiling support 3 . In principle, however, the spindle device 5 can also be part of the support device 4 .

In the exemplary embodiment, the support device 4 is designed as an adapter or as an attachment for the detachable connection to an upper end of the ceiling support 3 . For this purpose, a lower end area of the lower support tube 8 is designed with a lower adapter element 16 for detachable attachment to the ceiling support 3 . Alternatively, not shown in the exemplary embodiment, the ceiling support 3, an extension of the ceiling support 3 or a spindle section, in particular a head spindle or the spindle device 5, can be formed on a lower end region of the lower support tube 8.

In the exemplary embodiment, it is also provided that an upper end area of the upper support tube 7 has an upper adapter element 17 for the detachable fixing of the support head 6 for the ceiling formwork panel 2 . Alternatively, the support head 6 for the ceiling formwork panel 2 can be formed in one piece with the upper support tube 7 on the upper end region of the upper support tube 7 (not shown in the exemplary embodiment).

The Figures 1 to 5 show the principle of a method for stripping the ceiling formwork panels 2. For this purpose, it is provided that the ceiling props 3 are first lowered by means of the spindle device 5 so far that a support head 6 fixed to the support device 4 according to the invention, with which the ceiling prop 3 engages with the ceiling formwork panel 2 stands, is or can be brought out of engagement with the ceiling formwork panel 2 . The support head 6 is then pivoted by means of the support device 4 by a tilting angle α in such a way that the support tubes 7, 8 are pivoted into the tilted position.

The pivoting of the support head 6 takes place in such a way that the support head 6 is not in a pivoting path of the ceiling formwork panel 2 when it is about a pivot axis that runs along a side edge of the ceiling formwork panel 2, which is not on the Ceiling prop 3 is adjacent, the support head 6 is swung out, is pivoted down. The result is in figure 5 shown.

It should be pointed out that in order to carry out the method according to the invention, the spindle device 5 according to the invention with the two support tubes 7, 8 must not necessarily, but preferably, be used. Lowering can also be achieved with other support devices that allow the support head 6 to be lowered.

Below is a particularly advantageous pivoting of the support device 4 based on the Figures 1 to 5 shown.

As shown, the ceiling formwork panels 2 preferably have a rectangular base area, which is usually formed by a formwork panel.

In the Figures 1 to 5 is shown as that in figure 1 illustrated right, front ceiling formwork panel 2 can be shuttered. The ceiling formwork panel 2 is pivoted around one of the long side edges, in the exemplary embodiment around the left long side edge, which represents the pivot axis of the ceiling formwork panel 2 in the context of the method.

In order to strip the slab formwork panels 2, first, as in figure 3 shown, provided that the two ceiling supports 3, which support the left long side edge of the ceiling formwork panels 2, are lowered, preferably by about 20 to 30 mm, in particular 25 mm.

Then the two ceiling supports 3 are lowered, which support the right long side edge of the ceiling formwork panel 2, preferably the two ceiling supports 3 are lowered by 30 to 70 mm, preferably by 50 mm.

The right side of the ceiling formwork panel 2 is then raised and supported again by means of a formwork aid 18 or a raising aid. This situation, in which the right-hand side of the slab formwork panel 2 is raised using the formwork aid 18, is in figure 4 shown.

The formwork aid 18 is usually a telescoping rod with a head that is suitable for engaging the underside of the ceiling formwork panels 2 .

How out figure 4 As can be seen, the support head 6 is disengaged from the ceiling formwork panel 2 by lowering the ceiling support 3 by preferably 50 mm and then raising the ceiling formwork panel 2 again by means of the formwork aid 18, or the support head 6 is exposed. this is in figure 4 shown accordingly.

In the exemplary embodiment, the ceiling supports 3 are lowered with the aid of the spindle device 5. The spindle device 5 can preferably have a head spindle.

The support head 6 is then pivoted by means of the support device 4 by a tilting angle α in such a way that the support head 6 is no longer in a pivoting path of the ceiling formwork panel 2 . this is in figure 5 shown. The pivoting path of the ceiling formwork panel 2 results from the fact that the ceiling formwork panel 2 is pivoted downwards about a pivot axis, in the exemplary embodiment the left long side edge of the ceiling formwork panel 2 .

In figure 5 a situation is shown in which the ceiling formwork panel 2 has already been pivoted downwards. The ceiling formwork panel 2 can then be unhooked and transported away in a known manner.

The lowering of the support head 6 before it is pivoted by a tilting angle α can preferably be 25 mm to 500 mm, in particular 50 mm to 400 mm. It has proven particularly suitable if the lowering is by 25 mm to 100 mm, preferably 35 mm to 70 mm, particularly preferably 40 mm to 55 mm. This also allows the support head 6 to be freed and then pivoted.

The assembly of the ceiling formwork panel 2 or the encasing can be done in the opposite way. It is thus possible to carry out both the shuttering and the shuttering process from a safe position from below.

In order to enable the support head 6 to pivot, the exemplary embodiment provides for the support device 4 to be designed in the manner described above with reference to the support device 4 according to the invention. The support device 4 can be operated in a particularly simple manner by pushing the support sleeve 9 upwards by hand in order to unlock the support tubes 7, 8 in the working position and then, preferably also by hand, the upper support tube 7 to pivot into the tilted position.

The inventive method, as is based on the Figures 1 to 5 described can also be carried out with a support device having a different pivoting mechanism, according to the claims.

Claims (14)

1. Supporting device (4) for a ceiling support (3) for supporting a ceiling formwork panel (2), the supporting device (4) having at least one upper elongated supporting element (7) and one lower elongated supporting element (8), and the supporting elements (7, 8) being pivotably connected to one another, the supporting elements (7,8) can be brought into a working position in which the support elements (7, 8) are preferably aligned coaxially with one another, and the support elements (7, 8) can be pivoted into a tilting position in which the support elements (7, 8) are pivoted through a tilting angle (α) with respect to one another, a locking element (9) being provided, which secures the support elements (7, 8) against pivoting in the operating position, wherein the locking element (9) bridges a connecting region (10) between the two support elements (7, 8) in the operating position, and wherein the locking element (9) can be moved into a release position in which the locking element (9) is arranged outside the connecting region (10),
   characterized in that the locking element (9) in the operating position extends from a lower end region of the upper supporting element (7) to an upper end region of the lower supporting element (8) and in the process bridges the connecting region (10).
2. Support device (4) according to claim 1,
   characterized in that
   the locking element (9) rests in the working position at least in sections against an inner wall and/or an outer wall of the supporting elements (7, 8), the locking element (9) preferably forming a guide with the supporting elements (7, 8) in order to displace the locking element (9) in a guided manner between the working position and the release position.
3. Support device (4) according to claim 1 or 2,
   characterized in that
   the lower support element is a lower support tube (7) and/or the upper support element is an upper support tube (8) and/or the locking element is a displaceable support sleeve (9).
4. Support device (4) according to claim 3,
   characterized in that
   the support sleeve (9) is displaceable coaxially with the upper support tube (7) and/or the lower support tube (8) in order to bring the support sleeve (9) into the release position.
5. Support device (4) according to any one of claims 1 to 4,
   characterized in that
   an upper end face of the lower support element (8) has a chamfer (12), wherein the chamfer (12) is configured such that 40% to 90%, preferably 50% to 90%, in particular 50% to 75%, of the upper end face of the lower support element (8) is not provided with a chamfer (12).
6. Support device (4) according to any one of claims 3 to 5,
   characterized in that
   the support tubes (7, 8) are pivotably connected to each other via a pivot axis (13).
7. Support device (4) according to claim 6,
   characterized in that
   a connecting element (15) is fixed to one of the support tubes (7), preferably to an inner wall of the support tube (7), and the connecting element (15) has one or more bores (15a) through which the axis of rotation (13) fixed to the other support tube (8) is guided in such a way that the connecting element (15) can be pivoted about the axis of rotation (13).
8. Support device (4) according to any one of claims 3 to 7,
   characterized in that
   an outer circumference of the lower support tube (8) and/or an outer circumference of the upper support tube (7) and an inner circumference of the support sleeve (9) have a cross-section deviating from the circular shape, preferably a lemon-shaped cross-section, a rectangular cross-section, a triangular lemon-shaped cross-section, a star-shaped cross-section or a polygonal cross-section.
9. Support device (4) according to any one of claims 1 to 8,
   characterized in that
   a spindle device (5) is provided to change the overall length of the support device (4) and the ceiling support (3).
10. Ceiling support (3) with a support device (4) according to one of claims 1 to 9.
11. Ceiling support (3) according to claim 10,
    characterized in that
    the support device (4) is detachably fixed to an upper end of the ceiling support (3) or is formed integrally with the ceiling support (3).
12. Ceiling formwork system (1), comprising at least one ceiling formwork panel (2), at least one ceiling support (3) and at least one support device (4) for the ceiling support (3) according to any one of claims 1 to 9.
13. Method for stripping a ceiling formwork panel (2) supported by at least one ceiling support (3), according to which the ceiling support (3) is first lowered by means of a spindle device (5) to such an extent that a support head (6), to which the ceiling support (3) is connected via a pivotable support device (4) according to any of claims 1 to 9, can be brought out of engagement with the ceiling formwork panel (2), whereafter the support head (6) is subsequently pivoted by means of the support device (4) by a tilting angle (α) in such a way that the support head (6) is not located in a pivoting path of the ceiling formwork panel (2) when the latter can be pivoted downwards about a pivot axis running along a side edge of the ceiling formwork panel (2) which is not adjacent to the ceiling support (3).
14. The method according to claim 13,
    characterized in that
    for pivoting the support head (6), a locking element (9), which bridges a connecting region (10) between an upper support element (7) and a lower support element (8), is moved from a working position, in which the locking element (9) secures the support elements (7,8) against pivoting, to a release position in which the locking element (9) is arranged outside the connecting region (10), preferably in such a way that the locking element (9) is displaced coaxially with respect to the supporting elements (7, 8).

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