Horizontal beam, apparatus and method for shuttering a concrete floor

Abstract

The invention relates to a horizontal beam (1) for securing at least one formwork panel (2) for at least partially forming a concrete slab. According to the invention, at least one hinged hook (4) for securing the formwork panel (2) is formed on at least one first longitudinal side (1a) of the horizontal beam (1). The invention also relates to methods for at least partially forming and stripping a concrete slab.

Description

[0001] The invention relates to a horizontal beam for fixing at least one formwork panel for at least partial formwork of a concrete ceiling.

[0002] The invention further relates to a device of the type defined in more detail in the preamble of claim 10 for at least partially forming a concrete ceiling.

[0003] The invention further relates to a method for at least partially forming a concrete ceiling.

[0004] The invention also relates to a method for at least partially removing the formwork from a concrete ceiling.

[0005] For pouring concrete ceilings, formwork or ceiling formwork or concrete formwork or corresponding formwork systems are generally required to create a formwork surface or formwork mold to hold the liquid concrete, which can then harden in the shape defined by the formwork to form a ceiling of a building space.

[0006] State-of-the-art technology includes, among other things, modular slab formwork which can be partially dismantled after a short drying or shuttering time, so that only certain formwork components or components of these formwork systems need to be left on site until the formwork has been largely completely removed or the concrete has hardened. Other formwork components can be assembled at a new location in the meantime, reducing the amount of material required and making more efficient use of available material resources. This principle is also known as early striking. A further advantage can be shortened drying or shuttering times due to better ventilation of the resulting concrete slab. Furthermore, the modular design also allows for a comparatively flexible design of the formwork or the concrete slab to be poured.

[0007] The safety of the installers is of particular importance when using formwork systems, as the assembly of the components of the slab formwork or formwork systems, which are sometimes arranged several meters above the ground, is associated with particular risks, such as the risk of falling and / or hazards from falling parts. This particularly applies to many of the formwork systems known to date, which must be assembled at least partially from above, for example from a scaffold or a lifting platform and / or using a crane or other lifting devices. A further disadvantage can be the necessary use of special equipment, such as transfer vehicles as described in DE 10 2021 131 957 A1, which must first be procured and then constantly transported to the new location and temporarily stored.

[0008] DE 10 2021 106 138 A1 discloses a support device for a slab formwork system, which has tiltable or pivotable support elements or support heads, which are arranged in particular at the upper end of the slab props or vertical props. By partially tilting or pivoting the support heads, space can be created for pivoting the slab formwork panels or formwork sheets upwards during assembly or disassembly of the slab formwork system. This is intended to enable assembly and disassembly from below, i.e., without any risk of falling for the assemblers. Because the pivotable elements are fixed to the slab prop, they remain at the installation site until the formwork is completely stripped and cannot be removed prematurely and, if necessary, installed at a new location. However, due to their comparatively complex construction, they represent a significant cost factor and should therefore be used more efficiently.This also prevents premature dismantling of the horizontal beams, which are attached to the floor props, and the formwork panels, which in turn are attached to the horizontal beams. Furthermore, the pivoting design of the support heads can compromise the stability of the floor props in their longitudinal or vertical direction. Due to the high load-bearing capacity, the pivoting elements can also be subject to significant wear and / or material fatigue.

[0009] EP 3 438 365 A1 shows a slab formwork with permanent slab panels that remain as a lower layer in the finished concrete slab. One side of the permanent slab panels or non-reusable slab panels is hooked onto the slab props or vertical props for assembly using the associated slab formwork frames, and the other side is then swung up from below. The slab props for the second side of the slab panels are only positioned after the slabs have been swung up. A similar application for reusable slab panels would have the disadvantage that the slab panels cannot be removed before the slab props during dismantling, which must remain in place to support the slab until the formwork is completely removed, making such a system unsuitable for early striking.

[0010] Furthermore, the two aforementioned solutions with state-of-the-art pivoting mechanisms do not include horizontal beams or girders. However, these can significantly increase the load-bearing capacity of the formwork system and prevent sagging of the formwork surface, making them particularly preferable for large formwork surfaces. Another particular advantage is the ability to position the floor props at greater intervals than previously possible, which advantageously increases freedom of movement on the construction site floor.

[0011] The considerations regarding the safety of the fitters, in particular the risk of falls and / or hazards from falling parts, apply to formwork panels to the same extent as to horizontal beams, since both are naturally used at the approximate ceiling height.

[0012] The present invention is based on the object of creating a horizontal beam which is improved compared to the prior art and which ensures the highest possible safety for the fitters by means of assembly and / or disassembly options from below.

[0013] According to the invention, this object is achieved by a horizontal beam having the features mentioned in claim 1.

[0014] The present invention is further based on the object of creating a device which is improved compared to the prior art and which ensures the highest possible safety for the fitters by means of assembly and / or disassembly options from below.

[0015] According to the invention, this object is achieved by a device having the features mentioned in claim 10.

[0016] The present invention is further based on the object of creating a method which is improved compared to the prior art and which ensures the highest possible safety for the fitters by assembling or formwork or scaffolding from below.

[0017] According to the invention, this object is achieved by a method having the features mentioned in claim 12.

[0018] The present invention is also based on the object of creating a method which is improved compared to the prior art and which ensures the highest possible safety for the fitters by dismantling or stripping or equipping from below.

[0019] According to the invention, this object is achieved by a method having the features mentioned in claim 14.

[0020] In the horizontal support according to the invention for securing at least one formwork panel for at least partial formwork of a concrete ceiling, at least one folding hook for securing the formwork panel is formed on at least one first longitudinal side of the horizontal support.

[0021] By providing at least one folding hook for securing the formwork panel or formwork element, assembly and / or disassembly of the formwork panel can be carried out from the ground instead of from an elevated position, thus ensuring the highest possible safety for the assemblers, in particular by eliminating the risk of falling. At the same time, the advantageous handling from below enables early striking, so that formwork times can be shortened and material resources, in particular formwork panels and, if applicable, horizontal beams, can be used more efficiently by being reusable and, after early striking, even being able to be used at a new location ahead of time. The horizontal beam according to the invention can be integrated, in particular, into modular formwork systems, thereby making the formwork flexible.In addition, the use of horizontal beams, in particular the horizontal beam according to the invention, contributes to the fact that a comparatively large ground clearance is possible due to a smaller number of necessary ceiling supports while at the same time maintaining or improving the stability of the overall construction or the formwork.

[0022] The horizontal beam is preferably designed for attachment to a ceiling support or vertical support, in particular a support head at the upper end of a ceiling support. The horizontal beam is generally supported or carried by two ceiling supports at two opposite ends of the horizontal beam, preferably in an at least approximately horizontal position or orientation.

[0023] To secure a formwork panel, two horizontal beams are generally required. These beams are arranged on two opposite sides of the formwork panel to support or hold the formwork panel in an at least approximately horizontal orientation. One of the two horizontal beams can also be a prior art horizontal beam without or with only some of the features of the invention.

[0024] The formwork of the concrete ceiling is implemented, in particular, via a plurality of formwork panels, horizontal beams, and floor supports. The preferably flat and preferably level upper surfaces of the formwork panels and horizontal beams, as well as the upper ends of the floor supports, can form a formwork surface or formwork mold for receiving the initially liquid concrete, allowing it to harden into a ceiling in the shape defined by the formwork. In the assembled state of the formwork, the horizontally arranged formwork panels and the horizontal beams are, in particular, at at least approximately the same height.

[0025] Preferably, the formwork, in particular the connection of the formwork panels, the horizontal beams and / or the floor supports, both among themselves and between each other, is sealed in such a way that liquid concrete cannot essentially flow downwards out of the formwork.

[0026] In a simple embodiment, the folding hook can be designed as a foldable support surface. This means that a special function for hooking the formwork panel in particular is not necessary. Simply providing a support surface for the formwork panel is sufficient.

[0027] In an advantageous embodiment of the invention, a lower region or an upper region of the folding hook is articulated to the horizontal support, preferably to the first longitudinal side of the horizontal support.

[0028] The hinged hook is preferably connected to the horizontal beam in an articulated manner such that the hinged hook can be tilted or folded in the direction of the first longitudinal side of the horizontal beam, thereby creating space for the assembly and / or disassembly of the formwork panel, particularly in the vertical direction. The arrangement of the articulated connection, preferably formed by a pivot axis, at the lower region of the hinged hook can be particularly advantageous for actuating the hinged hook, particularly by pressure with a pressure component in the direction of the first longitudinal side or diagonally from below.

[0029] It can be provided that the articulated connection or a pivoting of the folding hook about the articulated connection can be blocked at least temporarily in such a way that the folding hook remains in the current position or position, in particular even under load.

[0030] It is advantageous if, in addition to the articulated connection, the folding hook has a positive guide via which the folding hook is connected to the horizontal support, in particular to the first long side of the horizontal support. The positive guide can, preferably in a similar way to a window lock, prevent the folding hook from folding out beyond a certain angle, so that the positive guide defines the carrying position in particular by means of a stop, i.e. prevents the folding hook from folding out beyond the carrying position. The positive guide can preferably have one, particularly preferably two guide elements or guide rails which serve to guide the folding hook along a predetermined path when it is folded out. For this purpose, the guide rails can preferably each have a recess or groove, in particular an elongated hole, in which a bolt or pin of the folding hook is preferably movably fixed or guided.One end of the respective guide rail can be hinged to the horizontal support, while the other end of the respective guide rail interacts with one of the bolts or pins of the folding hook in such a way that the maximum angle by which the folding hook can be unfolded is limited. The positive guide is preferably arranged or fixed in an area of ​​the folding hook that faces away from the hinged connection of the folding hook to the horizontal support.

[0031] Particularly preferably, the articulated connection is formed at the lower region of the folding hook, preferably at the underside, preferably by a folding axis, while the forced guide in the preferably described embodiment is fixed in an upper region of the folding hook.

[0032] It has proven particularly suitable if the folding hook is adjustable at least into a carrying position and into a formwork position, wherein the folding hook is positioned in the carrying position when the horizontal beam is used as intended in such a way that the formwork panel can be fixed to the folding hook in a horizontal orientation, and wherein a projection of the folding hook over the first longitudinal side is smaller in the formwork position than in the carrying position.

[0033] In the carrying position, the folding hook allows the formwork panel to be secured to the horizontal beam, or the folding hook is suitable for supporting the formwork panel, so that the formwork panel or formwork can be used for pouring a concrete slab with liquid concrete. In the carrying position, the folding hook is in a particularly extended position, with the folding hook supported by a stop.

[0034] The shuttering position is intended primarily for assembling the formwork panel or for shuttering. In the shuttering position, the folding hook is in a folded-in position. It can be advantageous if the folding hook is not fully folded in the shuttering position, especially if it is not locked in the shuttering position.

[0035] The projection of the folding hook beyond the first longitudinal side of the horizontal beam can be orthogonal to the first longitudinal side. When used as intended, the projection points in particular toward the formwork panel. Accordingly, in the formwork-setting position, compared to the carrying position, vertical space is released at a front side of the folding hook, with the front side facing away from the first longitudinal side of the horizontal beam. Preferably, in the carrying position, an upper side of the folding hook forms an at least approximately horizontal support surface for the formwork panel.

[0036] In this case, the formwork panel, in particular one side or edge of the formwork panel, can be placed on the folding hook, and if necessary, hooked into it. Preferably, the formwork panel is held or supported on the folding hook or on the horizontal support essentially by its weight.

[0037] It has proven particularly advantageous if the folding hook can be transferred from the carrying position into the formwork position, in particular by pressure against the folding hook with a pressure component in the direction of the first longitudinal side.

[0038] The pressure can preferably be exerted or imparted by the formwork panel to be installed. In particular, the pressure, which is usually actively exerted by the installer, can also be applied diagonally from below. Preferably, the folding hook can be moved from the supporting position to the shuttering position during installation of the formwork panel by guiding or pivoting one side of the formwork panel diagonally from bottom to top along the folding hook, for example by tilting or folding the folding hook in the direction of the first long side of the horizontal beam. In particular, this advantageously does not necessarily require any additional aid.

[0039] Alternatively or additionally, it may be particularly advantageous for the folding hook to be designed and constructed so that, if no external pressure component acts on the folding hook, it can move independently from the shuttering position to the carrying position.

[0040] This makes it much easier to secure the formwork panel to the folding hook or to place one side of the formwork panel on the support surface of the folding hook after the formwork panel has been horizontally aligned and positioned at the height of the horizontal beam, which, when used as intended, occurs in the carrying position of the folding hook. In particular, manual adjustment of the folding hook to the carrying position is no longer necessary. If necessary, installation can even be carried out by a single installer.

[0041] The external pressure component refers in particular to the pressure actively or intentionally exerted by the installer, as described above in connection with the transfer of the folding hook from the supporting position to the shuttering position. The external pressure component can be transmitted through the formwork panel, meaning the pressure or force does not have to act directly on the folding hook. The weight of the formwork panel when it rests on the folding hook is not considered an external pressure component.

[0042] In one embodiment, the folding hook can move from the shuttering position to the carrying position by a spring force and / or by a preferably elastic restoring force.

[0043] The folding hook can be equipped with a spring for this purpose. The restoring force can also be generated by a component of the folding hook, e.g., a magnet and / or an elastic rubber or elastomer.

[0044] It can also be advantageous if the folding hook can be adjusted to a dismantling position.

[0045] The stripping position is intended primarily for dismantling the formwork panel or for stripping. The stripping position can also be used as a transport position if necessary.

[0046] Preferably, in the formwork stripping position, the projection of the folding hook over the first longitudinal side is less than in the carrying position and preferably also less than in the formwork setting position.

[0047] In other words, the hinged hook rests more closely against the first longitudinal side of the horizontal beam in the formwork stripping position than in the supporting position. This allows the formwork panel to be guided or swung down along the hinged hook for disassembly, particularly from top to bottom, since more space is available vertically beneath the formwork panel compared to the supporting position. Alternatively or additionally, reducing the overhang can also be advantageous for transport purposes.

[0048] Any remaining projection of the hinged hook beyond the first longitudinal side of the horizontal beam in the stripping position can at least approximately correspond to the projection in the shuttering position. Preferably, the projection in the stripping position is smaller than in the shuttering position, or the hinged hook rests more closely against the horizontal beam than in the shuttering position.

[0049] In an advantageous embodiment, the folding hook remains in the stripping position without external influence, wherein the folding hook is preferably fixed in a force-fitting and / or form-fitting manner to the first longitudinal side in the stripping position, in particular is clamped and / or locked.

[0050] By remaining in the folded position, the stripping position is particularly well suited for dismantling and / or transporting the horizontal beam, in particular in contrast to the shuttering position, from which the folding hook preferably moves independently into the carrying position or the folded-out position.

[0051] It is advantageous if at least two, preferably exactly two, three or four folding hooks are formed on the first longitudinal side of the horizontal beam for securing the formwork panel.

[0052] In particular, it is advantageous if the formwork panel is supported on at least one (first) side by at least two, preferably exactly two, folding hooks, wherein the formwork panel is supported on an opposite (second) side by at least one further folding hook, preferably by exactly two further folding hooks. Instead of the folding hooks, support hooks can also be provided, as will be explained in more detail below, to support the opposite (second) side. In both cases, this prevents the formwork panel from tipping or wobbling and increases the stability of the arrangement. Furthermore, all folding hooks should be on the same level, especially when there are more than three folding hooks in total.

[0053] Two formwork panels can be attached to a folding hook if necessary, but preferably only one.

[0054] Furthermore, it can be advantageous if the spacing between the folding hooks corresponds at least approximately to the width of one of the formwork panels. The width of the formwork panel is to be measured in particular in the direction of the first longitudinal side of the horizontal beam, and a length of the formwork panel is to be measured perpendicularly thereto. The spacing between two folding hooks is preferably dimensioned such that the formwork panel is supported by one of the two folding hooks in each of two adjacent corner areas, or that the two folding hooks each engage or are positioned in a corner of the formwork panel when the formwork panel is placed on the folding hooks as intended.

[0055] It is advantageous if the horizontal support is equipped to place or receive two or more formwork panels. In this case, it is preferably provided that a folding hook is positioned in the region of one end of the horizontal support or the first longitudinal side. It is further preferably provided that the preferably four remaining folding hooks arranged between the ends are each arranged in pairs, with one of the folding hooks of the (first) pair receiving the (first) corner of a (first) formwork panel and the other folding hook of the (first) pair receiving the corner of a (second) adjacent formwork panel, and one of the folding hooks of the other (second) pair receiving the other (second) corner of the (first) formwork panel. Preferably, the horizontal support is provided to receive two, three or four formwork panels.

[0056] It is also advantageous if at least one folding hook and / or one immovable support hook is formed on a second longitudinal side of the horizontal beam for securing a further formwork panel.

[0057] The folding hook is, in particular, a folding hook as described above. The projection of the folding hook on the second longitudinal side is analogous to the second longitudinal side of the horizontal beam. In particular, the folding hook is movable, tiltable, or foldable, whereas the immovable support hook is rigid.

[0058] It is preferable that either only folding hooks or only fixed support hooks are formed on a respective long side. In particular, it is possible, but not preferred, for both folding hooks and support hooks to be formed on a long side. It can preferably be provided that folding hooks are provided on both long sides of the horizontal support. A particularly preferred embodiment of the invention is one in which only folding hooks are formed on the first long side and only fixed support hooks are formed on the second long side.

[0059] If the formwork panel rests with one of its sides on one or more support hooks on the second longitudinal side of a horizontal beam, the opposite side of the formwork panel is secured, according to the invention, to one or more hinged hooks on the first longitudinal side of another horizontal beam. In other words, such an arrangement of multiple horizontal beams has proven particularly suitable, in which each longitudinal side with hinged hooks, in particular the first longitudinal side of a first horizontal beam, is opposite a longitudinal side with immovable support hooks, in particular the second longitudinal side of a second horizontal beam.

[0060] Preferably, the folding hooks and / or immovable support hooks formed on the second longitudinal side are each formed at the same longitudinal position with respect to a longitudinal axis of the horizontal support as the folding hooks formed on the first longitudinal side.

[0061] This means that the folding hooks and / or support hooks are positioned opposite each other in pairs on different long sides.

[0062] In a further development of the invention, a locking hook movable between a locking position and an unlocking position for fixing to a ceiling support can be formed at a first end and / or at a second end of the horizontal support.

[0063] As an alternative to the locking hook, a fixed hook for securing to another ceiling support can also be formed at one of the two ends of the horizontal support. In a preferred embodiment, one of the ends, in particular the first end, has a locking hook, and the other end, in particular the second end, has a fixed hook.

[0064] Thanks to the locking hook at one of the two ends, in addition to the formwork panel, the horizontal beam itself can also be advantageously assembled and / or disassembled from below, in particular by pivoting the horizontal beam about a pivot axis to which the horizontal beam is movably secured at the other end. The advantages are analogous to the previous description of the advantages of the pivoting formwork panel.

[0065] The horizontal support can be pivotable or rotatable, in particular, within an angular range, preferably by approximately 90° from an at least approximately perpendicular or vertical position to an at least approximately horizontal or horizontal position. A smaller angular range may also be sufficient for intended use. An angular range greater than 90° is generally not necessary.

[0066] The ceiling prop is, in particular, a vertical prop. It may comprise a support leg and a support head at the upper end of the support leg, with the horizontal support being attachable, in particular, to a support head support mount using the locking hook and / or the fixed hook.

[0067] The support leg and the support head can be formed integrally with each other, but preferably the support head is detachably connected to the support leg. Extension pieces can also be provided, which are inserted between the support leg and the support head. Furthermore, a height adjustment can also be provided, in particular to change the length of the support leg and / or the length of the support head.

[0068] The support head is preferably lowerable, meaning that the (vertical) length of the prop can be reduced. This is particularly advantageous for removing the formwork or dismantling the prop.

[0069] It is advantageous if the locking hook projects beyond the first end of the horizontal support in the locking position and the projection of the locking hook is designed such that the locking hook is or can be secured to the ceiling support. In the unlocking position it is preferably provided that the locking hook is arranged, preferably pivoted, in such a way that the projection of the locking hook beyond the first end of the horizontal support is less than in the locking position. Preferably the locking hook no longer projects beyond the first end of the locking hook in the unlocking position. This has the advantage that the horizontal support can be pivoted up for assembly or pivoted down for disassembly and can be guided past the ceiling support without collision.Preferably, it is provided that only when the locking hook is in the locking position does the locking hook engage in the ceiling support in such a way that the horizontal beam can be fixed to the ceiling support.

[0070] It has proven advantageous if the locking hook can be fixed in the locking position with a fixing member, in particular a fixing wedge, in particular in order to fasten the horizontal beam to the ceiling support.

[0071] The fixing wedge preferably has a wedge shape at least along a portion of its longitudinal axis. However, the fixing wedge can also be designed without a wedge shape. The fixing wedge can also be an elongated fixing element, which is preferably moved along the longitudinal axis by a striking action on one of its ends. This can be used to move the fixing wedge into a position in which the fixing wedge fixes the locking hook, or into a position in which the fixing wedge does not fix the locking hook in the locking position.

[0072] It has proven particularly suitable if the locking hook can be pivoted in the unlocking position in order to release the locking hook from the ceiling support and / or to fix it to the ceiling support.

[0073] In this case, the locking hook can be pivotable or tiltable, in particular, within an angular range suitable for disengaging the locking hook from the ceiling support, in particular from a support receptacle of the ceiling support. For securing to the ceiling support, the locking hook can preferably be brought into engagement with the support receptacle of the ceiling support.

[0074] It is advantageous if the horizontal support has a locking hook axis about which the locking hook can pivot in order to adjust the locking hook between the locking position and the unlocking position. Preferably, a movement from the locking position to the unlocking position occurs in such a way that a projection of the locking hook projecting beyond the first end of the horizontal support, which is intended for engagement with the ceiling support, in particular a support receptacle of the ceiling support, is pivoted upward (when the horizontal support is used as intended).This has the advantage that after releasing a fixing member which holds the locking hook in the locking position, disassembly of the horizontal support is easily possible by pivoting the first end of the horizontal support downwards, since the locking hook at the first end, even if it is hooked into the support receptacle, can be pivoted upwards relative to the horizontal support into the unlocking position with almost no resistance, which can already be achieved by pivoting the horizontal support or the first end of the horizontal support downwards.

[0075] In an advantageous embodiment of the invention, the fixing member or the fixing wedge is displaceable along its longitudinal axis and is arranged at least approximately orthogonally to the locking hook, wherein the fixing wedge has a first section which, in the locking position, engages in a recess of the locking hook in a form-fitting and / or force-fitting manner such that the locking hook is fixed in the locking position, and wherein the fixing wedge has a second section which engages in the recess of the locking hook but does not prevent a pivoting movement of the locking hook from the locking position into the unlocking position.

[0076] By moving the fixing wedge in one direction or the other along the longitudinal axis of the fixing wedge, the fixing of the locking hook can be released or established, so that the locking hook is fixed in the locking position or can be moved or brought into the unlocking position.

[0077] The first section and the second section of the fixing wedge can in particular be sections along the longitudinal axis of the fixing wedge, wherein the first section is preferably arranged at one end of the fixing wedge and the second section is arranged at an opposite end of the fixing wedge.

[0078] In order to fix or release the locking hook, the first section and the second section can in particular each have a suitable cross-section.

[0079] In the locking position of the locking hook, or when the fixing wedge secures the locking hook in the locking position, the locking hook cannot be pivoted, particularly perpendicular to the longitudinal axis of the fixing wedge. For this purpose, the first section engages in the recess in a form-fitting and / or force-fitting manner. Preferably, the locking hook can be fixed in the locking position by the engagement of the first section of a fixing wedge with a T-shaped cross-section in a corresponding T-shaped recess in the locking hook. A certain amount of play may exist between the fixing wedge and the recess in the locking hook without impairing functionality.

[0080] In the unlocked position of the locking hook, or when the fixing wedge does not fix the locking hook in the locked position, the locking hook can be freely moved or pivoted, in particular perpendicular to the longitudinal axis of the fixing wedge, at least to such an extent or within such an angular range that the locking hook can be disengaged from the ceiling support and preferably no longer protrudes beyond the first end of the horizontal support or beyond the end at which the locking hook is arranged. For this purpose, the second section of the fixing wedge preferably does not have a projection that could engage the undercut of the locking hook's recess when the locking hook is in a corresponding folded position.

[0081] A stopper can be provided at each end of the fixing wedge, ensuring that the fixing wedge is secured to the horizontal beam regardless of its current position, preventing it from falling. The stops preferably serve as a fall-out protection.

[0082] The invention further relates to a device for at least partially formwork a concrete ceiling, comprising at least one first horizontal beam, a second horizontal beam, a formwork panel, and four ceiling supports or vertical supports, wherein one of the horizontal beams is secured to at least two of the ceiling supports, and wherein the formwork panel can be secured in a horizontal or horizontal orientation between the horizontal beams. According to the invention, at least two hinged hooks for securing the formwork panel are formed on at least one first longitudinal side of the first horizontal beam.

[0083] The folding hook according to the invention can be a foldable support suitable for receiving or supporting a formwork panel when the formwork panel is used as intended for shuttering a concrete slab. While hooking the formwork panel onto the folding hook is advantageous, the folding hook does not necessarily have to have a "hook function." In particular, a simple design may be sufficient if the formwork panel is merely supported by the folding hook or can be placed on it.

[0084] Preferably, the formwork panel and the folding hooks are designed such that the formwork panel can be hooked or suspended into a projecting projection, in particular an upwardly projecting projection of the folding hook.

[0085] The first horizontal beam and / or the second horizontal beam may preferably be horizontal beams having one or more features according to the preceding description.

[0086] A plurality of formwork panels can be provided, preferably just enough so that all the folding hooks of the horizontal beams can be covered with formwork panels and / or so that a continuous formwork surface can be formed with the formwork panels.

[0087] The advantages of the device according to the invention result analogously from the already described advantages of the horizontal support according to the invention.

[0088] In an advantageous embodiment of the device according to the invention, the folding hooks of the first horizontal support are adjustable at least into a carrying position and into a formwork position, wherein in the carrying position an upper side of the folding hooks forms an at least approximately horizontal support surface for a first side or edge of the formwork panel, wherein the carrying position can be transferred into the formwork position, in particular by pressure from below against the folding hooks, and wherein in the formwork position space is released in the vertical direction on a front side of the folding hooks facing away from the first longitudinal side of the first horizontal support in order to pivot the first side of the formwork panel upwards from bottom to top past the folding hooks, while an opposite second side of the formwork panel is supported by at least two folding hooks and / or immovable support hooks of the second horizontal support.

[0089] Preferably, the second side of the formwork panel forms a rotation axis with the second horizontal support for pivoting the formwork panel upwards.

[0090] The formwork panel can be pivotable or rotatable, in particular, within an angular range, preferably by approximately 90° from an at least approximately perpendicular or vertical position to an at least approximately horizontal or horizontal position. A smaller angular range may also be sufficient for intended use. An angular range greater than 90° is generally not necessary.

[0091] In a further development of the device, at a first end and / or a second end of the first horizontal beam and / or the second horizontal beam, a

[0092] Locking position and an unlocking position of movable locking hooks for fixing to one of the ceiling supports.

[0093] It has proven particularly suitable if the ceiling supports, the horizontal beams and the formwork panels form a plane upwards, which in particular forms a formwork surface.

[0094] The invention further relates to a method for at least partially forming a concrete ceiling using at least four ceiling supports, a first horizontal beam, a second horizontal beam and at least one formwork panel, comprising at least the following steps: (a) erecting at least four of the floor supports; (b) securing the first horizontal beam and the second horizontal beam between each two of the floor supports, wherein the horizontal beams run in pairs parallel to each other at least approximately at a distance of one length of the formwork panel; (c) placing a second side of the formwork panel on at least one folding hook on a long side of the second horizontal beam facing the first horizontal beam, wherein the folding hook is in a supporting position in which the folding hook forms an at least approximately horizontal support surface for the formwork panel, or placing a second side of the formwork panel on at least one immovable support hook of the second horizontal beam, such that in both variants the second horizontal beam and the formwork panel form a rotation axis; (d) pivoting up a first side of the formwork panel;(e) guiding the first side of the formwork panel from bottom to top along at least one folding hook of the first horizontal beam, which runs parallel to the second horizontal beam at least approximately at a distance equal to the length of the formwork panel, wherein the folding hook is brought into a formwork-setting position by pivoting the formwork panel upwards, in which the projection of the folding hook over the first longitudinal side is less than in the carrying position; (f) placing the first side on the folding hook of the first horizontal beam, wherein the folding hook is designed such that the folding hook, after the first side of the formwork panel has been guided past the folding hook, preferably automatically, transitions into the carrying position, and wherein the formwork panel assumes a horizontal orientation.

[0095] After the formwork has been set, the formwork surface or formwork shape defined by the formwork can be filled with liquid concrete, which can then harden in the shape specified by the formwork to form a ceiling.

[0096] The formwork of a concrete slab can preferably be carried out using horizontal beams and / or a device having one or more features according to the previous description.

[0097] The advantages of the method according to the invention for at least partially forming a concrete ceiling result analogously from the already described advantages of the horizontal beam according to the invention and the device according to the invention.

[0098] The erection of the ceiling supports in step (a) can in particular be carried out in such a way that step (b) can be carried out as described. In other words, it can preferably be provided that the ceiling supports are arranged on a rectangular base area. It can further preferably be provided that the distance between the ceiling supports on two opposite side lines of the base area corresponds at least approximately to the length of one of the horizontal beams, and wherein the distance on the other two opposite side lines corresponds at least approximately to the length of one of the formwork panels. The length of the formwork panel is to be measured in particular perpendicular to the first longitudinal side of the horizontal beam.

[0099] In step (c), the second side of the formwork panel can be placed or fixed on at least one, preferably at least two, folding hooks.

[0100] In particular, the method can be used to use as many formwork panels as can be accommodated on the folding hooks and / or immovable support hooks of the horizontal beams when used as intended.

[0101] The horizontal beams or formwork panels are preferably dimensioned such that one horizontal beam can accommodate one, two, three or four, particularly preferably three, formwork panels.

[0102] The pivoting up of one of the formwork panels in step (d) can be done with the help of a pole or formwork aid.

[0103] The formwork panel can be pivotable or rotatable, in particular, within an angular range, preferably by approximately 90° from an at least approximately perpendicular or vertical position to an at least approximately horizontal or horizontal position. A smaller angular range may also be sufficient for intended use. An angular range greater than 90° is generally not necessary.

[0104] In step (e), by pivoting the formwork panel upwards, preferably all folding hooks of the first long side are brought into a formwork position.

[0105] Individual steps and / or groups of steps of the method can be repeated iteratively if necessary, in particular until the slab to be poured or concreted is at least partially formwork. In particular, steps (c) to (f) can be repeated iteratively if necessary until the folding hooks or the immovable support hooks on at least one long side of the horizontal beams are completely covered with formwork panels. Alternatively or additionally, steps (a) to (b) in particular can also be repeated iteratively. For example, it is possible to first repeat steps (a) to (b) iteratively as a group and then repeat steps (c) to (f) iteratively as a group. It is also possible to first carry out steps (a) to (f) directly one after the other and then, if necessary, repeat them iteratively as a group. Other possible combinations arise analogously.The specified order of steps (a) to (f) and the order of the groups of steps (a) to (b) and (c) to (f) has proven to be particularly suitable.

[0106] In an alternative, but not preferred, variant of the formwork erection method, after step (c), unlike steps (d) and (e), at least one folding hook, preferably all of them, on the first longitudinal side of the first horizontal beam can first be manually folded in or brought into a formwork erection position, and only then can a first side of the formwork panel be pivoted upwards. The first side can be guided unhindered from bottom to top along the folding hook, in particular without the folding hook being actuated by the formwork panel or brought into the formwork erection position by the formwork panel.In this non-preferred variant, the folding hooks can be held in the formwork position, for example by a rod or formwork aid, while the formwork panel is pivoted upwards, or it can be provided that the folding hooks clamp or latch in the formwork position, so that the folding hooks are at least temporarily held in the formwork position so that the formwork panel can be pivoted upwards. It is also conceivable to move the folding hooks into the formwork position using a motor. The folding hook can then be moved back into the carrying position by actuating the folding hook, for example using a rod or the formwork aid or using a motor, for example by releasing a clamp or latch, if necessary also by a mechanism designed in such a way that a latch is released when the folding hook is pushed in further.The arrangement of the horizontal beams and the definition of the formwork position can be analogous to the previous description.

[0107] Further intermediate steps may be provided between any two consecutive steps of steps (a) to (f) of the method according to the invention. Furthermore, the steps may each comprise sub-steps.

[0108] In an advantageous further development of the method for at least partially forming a concrete slab, step (b) comprises the following sub-steps: (b1) Suspending a fixed hook formed at a second end of one of the horizontal beams or a locking hook onto a beam receptacle of one of the ceiling supports, such that in both variants the second end of the horizontal beam and the ceiling support form a pivot axis; (b2) Pivoting a first end of the horizontal beam upwards; (b3) Moving a locking hook formed at the first end of the horizontal beam into a locking position, fixing the locking hook in the locking position with a fixing member, preferably a fixing wedge, and suspending the locking hook onto the beam receptacle of another of the ceiling supports.

[0109] The horizontal beam can be swung up in step (b2) with the help of a pole or formwork aid.

[0110] The horizontal support can be pivotable or rotatable, in particular, within an angular range, preferably by approximately 90° from an at least approximately perpendicular or vertical position to an at least approximately horizontal or horizontal position. A smaller angular range may also be sufficient for intended use. An angular range greater than 90° is generally not necessary.

[0111] The invention also relates to a method for at least partially removing the formwork from a concrete slab that was previously formed using at least four slab props, a first horizontal beam, a second horizontal beam, and at least one formwork panel, in particular by means of a method for at least partially forming the formwork according to the preceding description. This second method comprises at least the following steps: (g) lowering the first horizontal beam and the second horizontal beam, preferably by actuating lowering wedges on the ceiling supports; (h) if necessary, supporting at least a first side of the formwork panel; (i) folding in at least one folding hook on a first longitudinal side of the first horizontal beam, on which the formwork panel rests with a first side, preferably into a stripping position with a reduced projection of the folding hook over the first longitudinal side, wherein the folding hook is preferably designed such that the folding hook remains in the stripping position without external influence; (k) pivoting down the first side of the formwork panel, wherein a second side of the formwork panel continues to rest on at least one folding hook and / or an immovable support hook of the second horizontal beam; (m) removing the second side of the formwork panel from the second horizontal beam; (n) if necessaryDismantling of horizontal beams that no longer support formwork panels; (o) if necessary, dismantling of floor supports that no longer support horizontal beams.

[0112] The designation of the steps, starting with (g), was chosen solely for the purpose of distinguishing them from steps (a) to (f) of the (first) method for at least partially erecting a concrete slab. The formwork can preferably have been installed using the method according to the invention described above, but it can also have been installed using a different method. Furthermore, the formwork is not dismantled or removed immediately after erection. Stripping generally takes place after pouring a slab with liquid concrete and the at least partial hardening of the concrete in the shape specified by the formwork.

[0113] The advantages of the method according to the invention for at least partially removing the formwork from a concrete ceiling result from the already described advantages of the horizontal beam according to the invention, the device according to the invention and the method according to the invention for at least partially forming a concrete ceiling.

[0114] The lowering of the horizontal beams in step (g) is accompanied by a lowering of the formwork panels attached to them. In other words, the horizontal beams are lowered together with the formwork panel(s) attached to the horizontal beam. In this process, the lowering wedges of the floor props to which the first horizontal beam and / or the second horizontal beam are attached are preferably actuated.

[0115] The lowering serves to create sufficient clearance or space from the ceiling to dismantle the formwork panels and / or horizontal beams, which usually requires a slight lifting of one side or end. Preferably, the ceiling props remain in contact with the concrete ceiling in order to at least support the ceiling props with their upper ends. The lowering can be achieved, for example, using a lowering mechanism of a support head located at the upper end of the ceiling prop, based on DE 10 2017 210 195 A1 by the applicant.

[0116] The supporting of the formwork panel in step (h) and / or the pivoting down of the formwork panel in step (k) can preferably be carried out with the aid of a pole or formwork aid.

[0117] The folding in of at least one folding hook provided in step (i) preferably provides that all folding hooks provided on the first longitudinal side in order to support a formwork panel are folded in, preferably into a dismantling position in which the folding hooks are preferably held at least temporarily in a force-locking and / or form-locking manner, preferably clamped, latched or locked, so that the formwork panel can be pivoted down, as provided in step (k).

[0118] Preferably, one formwork panel is swung down at a time and only then are the folding hooks folded in or moved into the stripping position to swing down a second formwork panel, which may be attached to the same horizontal beam. This increases safety. Alternatively, it can also be provided in principle that the folding hooks, which carry two, three or all formwork panels on the first long side of the first horizontal beam, are first folded in or moved into the stripping position and then the formwork panels are swung down one after the other according to step (k). However, this preferably requires that several people or fitters operate the formwork panels or that rods or formwork aids are provided to hold or secure the formwork panels in position after the folding hooks have been folded in, so that they do not swing down on their own.

[0119] Those steps that contain the term "if necessary" are optional. This applies in particular to steps (h), (n), and (o) and also to any sub-steps.

[0120] In particular, between step (m) or (n) and step (o), i.e. before dismantling the floor props, a break can be provided to allow the concrete, which may still be partially damp, to harden further. This is particularly the case if steps (g) to (n) are carried out as early stripping, when the concrete slab has not yet achieved sufficient strength to be self-supporting. Therefore, initially only the formwork panels and, if applicable, the horizontal beams are dismantled, while the floor props are left in place until they have completely hardened. Only then is step (o) carried out. Alternatively, the break for hardening can also be provided between step (m) and step (n).

[0121] Analogous to the method described above for at least partially forming a concrete slab, individual steps and / or groups of steps of the method can also be repeated iteratively, if necessary, in the method for at least partially removing the formwork from a concrete slab. The various combination options arise analogously to the previous description. Furthermore, further intermediate steps can be provided between each two consecutive steps of steps (g) to (o). Furthermore, the steps can each comprise sub-steps.

[0122] In an advantageous further development of the method for at least partially removing the formwork from a concrete ceiling, step (n) comprises the following sub-steps: (n1) if necessary, supporting at least a first end of one of the horizontal beams; (n2) releasing a fixing member, preferably a fixing wedge, which fixes a locking hook at a first end of the horizontal beam in a locking position in which the locking hook is hooked onto a beam receptacle of one of the ceiling supports, moving the locking hook from the locking position to an unlocking position and detaching the first end of the horizontal beam from the beam receptacle of the ceiling support; (n3) pivoting the first end of the horizontal beam downward about a pivot axis at a second end of the horizontal beam, wherein the second end of the horizontal beam continues to be supported by one of the ceiling supports; (n4) removing the second end of the horizontal beam from the ceiling support.

[0123] The supporting of the horizontal beam in step (n1) and / or the pivoting down of the horizontal beam in step (n3) can preferably be carried out with the aid of a rod or formwork aid.

[0124] The first and second horizontal beams, or preferably all horizontal beams used in the method or device according to the invention, are preferably identically designed. This means that the horizontal beams preferably each have an identically designed first longitudinal side with hinged hooks and an identically designed second longitudinal side with hinged hooks or fixed support hooks. Furthermore, the two ends at which the locking hooks or the fixed hooks are formed are preferably identically designed for all horizontal beams.

[0125] The support of the second end of the horizontal beam by one of the ceiling supports in step (n3) can be carried out in particular by engagement of an immovable hook or locking hook formed at the second end into a beam receptacle of the ceiling support.

[0126] Features described in connection with one of the subject matters of the invention, in particular the horizontal support, the device, and the method, can also be advantageously implemented for the other subject matters of the invention. Likewise, advantages mentioned in connection with one of the subject matters of the invention can also be understood to apply to the other subject matters of the invention.

[0127] It should also be noted that terms such as "comprising," "having," or "with" do not exclude other features or steps. Furthermore, terms such as "a" or "the," which indicate a singular number of steps or features, do not exclude a plurality of features or steps—and vice versa.

[0128] In a purist embodiment of the invention, however, it may also be provided that the features introduced in the invention with the terms "comprising," "having," or "with" are listed exhaustively. Accordingly, one or more lists of features may be considered complete within the scope of the invention, for example, for each claim. The invention may, for example, consist exclusively of the features mentioned in claim 1.

[0129] It should be noted that terms such as "first" or "second" etc. are used primarily for reasons of distinguishing between respective device or process features and are not necessarily intended to indicate that features are mutually dependent or related to one another.

[0130] In the following, embodiments of the invention are described in more detail with reference to the drawing.

[0131] The figures each show preferred embodiments in which individual features of the present invention are illustrated in combination with one another. Features of one embodiment can also be implemented independently of the other features of the same embodiment and can therefore be readily combined by a person skilled in the art to form further useful combinations and subcombinations with features of other embodiments.

[0132] In the figures, functionally identical elements are provided with the same reference numerals.

[0133] The figures represent the invention merely by way of example and in a highly schematic manner.

[0134] They show: Figure 1 shows a schematic view of an embodiment of the horizontal support according to the invention with a folding hook; Figure 2 shows a schematic view of an embodiment of the horizontal support according to the invention with a folding hook during the assembly of a formwork panel; Figure 3 shows a schematic view of an embodiment of the horizontal support according to the invention with a folding hook with a mounted formwork panel; Figure 4 shows a schematic view of an embodiment of the horizontal support according to the invention with a folding hook from the side; Figure 5 shows a schematic view of an embodiment of the horizontal support according to the invention with a locking hook attached to a ceiling support; Figure 6 shows a schematic view according to Figure 5with the locking hook in the unlocking position; Figure 7 shows a schematic detailed view of a fixing wedge of the locking hook of an embodiment of the horizontal support according to the invention; Figure 8 shows a schematic view of a formwork system with an embodiment of the device according to the invention; Figure 9a shows a schematic representation of step (b) of the method according to the invention for at least partially forming a concrete slab; Figure 9b shows a schematic representation of the completed step (b) of the method according to the invention for at least partially forming a concrete slab; Figure 9c shows a schematic representation of step (d) of the method according to the invention for at least partially forming a concrete slab; Figure 9d shows a schematic representation of step (f) of the method according to the invention for at least partially forming a concrete slab;Figure 9e shows a schematic representation after iteratively repeating the method according to the invention for at least partially forming a concrete slab; and Figure 10 shows a schematic view of step (d) of the method according to the invention for at least partially forming a concrete slab.

[0135] Formwork for pouring floors with liquid concrete typically includes horizontal beams 1 and formwork panels 2 at the approximate height of the planned concrete floor to form a formwork surface. This is typically supported by floor props 3, but can, under certain circumstances, also be supported, at least partially, by the side walls of the room for which the concrete floor is intended.

[0136] The Figure 1 shows a schematic view of an embodiment of the horizontal beam 1 according to the invention for fixing at least one formwork panel 2, which in the Figure 1not shown, for at least partially formwork a concrete ceiling, wherein at least one folding hook 4 for fixing the formwork panel 2 is formed on at least one first longitudinal side 1a of the horizontal beam 1.

[0137] In this case, a lower area or an upper area of ​​the folding hook 4 can be connected in an articulated manner to the horizontal beam 1, preferably to the first longitudinal side 1a of the horizontal beam 1. The first-mentioned embodiment of the folding hook 4 is provided with an articulated connection in the lower area, preferably on the underside, in the Figure 1 The alternative embodiment of the folding hook 4 with a hinged connection in the upper area is not shown in the drawing.

[0138] Preferably, the folding hook 4 is adjustable at least into a carrying position 5 and into a shuttering position 6, wherein the folding hook 4 is positioned in the carrying position 5 when the horizontal beam 1 is used as intended, such that the formwork panel 2 can be fixed to the folding hook 4 in a horizontal orientation, and wherein a projection of the folding hook 4 over the first longitudinal side 1a in the shuttering position 6 is smaller than in the carrying position 5. This is based on the Figure 2 and the Figure 3 which each shows a schematic view of an embodiment of the horizontal support 1 according to the invention during assembly of the formwork panel 2 or with the assembled formwork panel 2.

[0139] It may be advantageous if, in the carrying position 5, an upper side of the folding hook 4 forms an at least approximately horizontal support surface 7 for the formwork panel 2, as can be seen, for example, from the Figure 3 is evident.

[0140] The hinged hook 4 can preferably have one or more projections 8, hooks, or protrusions, preferably projecting from the upper side of the support surface 7. However, the support surface 7 can also be designed without a projection 8.

[0141] Such an embodiment of the invention has proven particularly suitable, in which the folding hook 4 can be transferred from the carrying position 5, in particular by pressure against the folding hook 4 with a pressure component in the direction of the first longitudinal side 1a, into the shuttering position 6. In particular, the articulated connection can be arranged on a rear side of the folding hook 4 facing the first longitudinal sides 1a of the horizontal beam 1. Furthermore, the folding hook 4 can, as is the case, for example, with the Figures 1 and 3shown folding hook 4 is the case, in the carrying position 5 have a side surface which runs obliquely downwards towards the first long side 1a of the horizontal beam 1 and which can be folded in by pressure from below against the folding hook 4 in the direction of the first long side 1a of the horizontal beam 1. This can be done, for example, by the Figure 2 The formwork panel 2 can be guided from bottom to top along the folding hook 4 as shown (refer to the arrow illustration for this purpose), so that when the formwork panel 2 is installed, the folding hook 4 automatically moves into the shuttering position 6 provided for the introduction of the formwork panel 2 from below. The possibility of installing the formwork or the formwork panel 2 from the ground is of great advantage for the safety of the installers.

[0142] In the Figure 4 is a schematic side view of an embodiment of the horizontal support 1 according to the invention. In addition to the Figures 1, 2 and 3 It is particularly clearly visible that at least one, preferably two, guide elements or guide rails 24 with a recess or groove 21, in particular an elongated hole, can be provided on the folding hook 4 as a positive guide, in each of which a bolt or pin 22 of the folding hook 4 is arranged so as to be guided or movable. In particular, the folding hook 4 can be in a stop position in the unfolded state, which preferably corresponds to the carrying position 5. The folded state of the folding hook 4 can preferably correspond to the formwork position 6. During the transition or transfer of the folding hook 4 from the carrying position 5 to the formwork position 6, for example by guiding the formwork panel 2 along as described above, the pin 22 can move, in particular in the groove 21, in the direction of the first longitudinal side 1a of the horizontal beam 1.

[0143] Preferably, the folding hook 4 is configured and designed to move independently from the shuttering position 6 to the supporting position 5 when no external pressure component acts on the folding hook 4. According to one embodiment of the invention, the folding hook 4 can move from the shuttering position 6 to the supporting position 5 by means of a spring force and / or a preferably elastic restoring force. In principle, it would also be conceivable to implement the restoring force by means of a magnet arrangement or a magnet or a motor drive, by means of which the folding hook 4 can be moved into the supporting position 5 and / or the shuttering position 6 and / or a position for striking, which will be described in more detail below.

[0144] It has also proven advantageous if the folding hook 4 can be adjusted to a stripping position. Preferably, in the stripping position, the projection of the folding hook 4 beyond the first longitudinal side 1a is less than in the supporting position 5 and preferably also less than in the shuttering position 6. It may be particularly advantageous for the folding hook 4 to remain in the stripping position without external influence, wherein the folding hook 4 is preferably fixed to the first longitudinal side 1a in a force-fitting and / or form-fitting manner in the stripping position, in particular clamped and / or latched and / or locked.

[0145] For the intended use of the horizontal beam 1 according to the invention for the formwork of a concrete ceiling, it can be particularly advantageous if at least two, preferably exactly two, three or four folding hooks 4 are formed on the first longitudinal side 1a of the horizontal beam 1 for securing one of the formwork panels 2.

[0146] In the exemplary embodiment, preferably six folding hooks 4 are provided on the horizontal beam 1 in order to secure three formwork panels 2. The folding hooks 4 are preferably spaced such that the respective formwork panel 2 is supported by one folding hook 4 in each of two adjacent corner regions, or that two folding hooks 4 each engage or are positioned in a corner of the formwork panel 2 when the formwork panel 2 is placed on the folding hooks 4 as intended. For this purpose, it is preferably provided that one folding hook 4 is positioned in the region of an end 1c, 1d of the horizontal beam 1 or the first longitudinal side 1a.It is further preferably provided that the preferably four remaining folding hooks 4 arranged between the ends 1c, 1d are each arranged in pairs, wherein one of the folding hooks 4 of the (first) pair receives the (first) corner of a (first) formwork panel 2 and the other folding hook 4 of the (first) pair receives the corner of a (second) adjacent formwork panel 2, and wherein one of the folding hooks of the other (second) pair receives the other (second) corner of the (first) formwork panel.

[0147] Furthermore, it may be advantageous for at least one hinged hook 4 and / or one immovable support hook 9 to be formed on a second longitudinal side 1b of the horizontal beam 1 for securing another formwork panel 2. Preferably, the hinged hooks 4 and / or immovable support hooks 9 formed on the second longitudinal side 1b are each formed at the same longitudinal position relative to a longitudinal axis of the horizontal beam 1 as the hinged hooks 4 formed on the first longitudinal side 1a.

[0148] In a further development of the invention, a locking hook 14 movable between a locking position 12 and an unlocking position 13 can be formed at a first end 1c and / or at a second end 1d of the horizontal support 1 for fixing to the ceiling support 3, as shown in the Figures 5, 6 and 7is shown by way of example. In this case, a fixed hook can also be formed at one of the two ends of the horizontal support 1, preferably as an alternative to the locking hook 14. In a preferred embodiment, one of the ends, in particular the first end 1c, has a locking hook 14 and the other end, in particular the second end 1d, has a fixed hook. In this case, it can be provided in particular that the locking hook 14 at the first end 1c of the horizontal support 1 can be fixed to a support receptacle 17 of the (first) ceiling support 3 and the fixed hook at the second end 1d of the horizontal support 1 can be fixed to a second support receptacle 26 of a further (second) ceiling support 3. The (first) support receptacle 17 and the second support receptacle 26 can be designed differently, as is the case, for example, with the Figure 6 can be removed.

[0149] The Figures 5 and 6show a schematic view of an embodiment of the horizontal support according to the invention with a locking hook 14. In the Figure 5 The locking hook 14 is located in particular in the locking position 12 and is fixed to a ceiling support 3. Preferably, the locking hook 14 can be fixed in the locking position 12 with a fixing member, which in the exemplary embodiment is preferably designed as a fixing wedge 19, in particular in order to fix or secure the horizontal beam 1 to the ceiling support 3. To clarify the fastening principle, the ceiling support 3 is in the Figure 5shown in cross-section, so that the engagement of the locking hook 14 on the ceiling support 3 and the engagement of the fixing wedge 19 in the locking hook 14 are visible. The locking hook 14 can be fixed to a support receptacle 17 of the ceiling support 3. In the exemplary embodiment, the locking hook 14 is preferably fixed with a receptacle, in particular with a recess 14a or a notch on a complementary projection 17a of the support receptacle 17 of the ceiling support 3 or the support head of the ceiling support 3.

[0150] The recess 14a, with which the locking hook 14 can be fixed to the projection 17a or generally to the support receptacle 17 of the ceiling support 3, is preferably formed in a projection of the locking hook 14, which, when the locking hook 14 is in the locking position 12, projects beyond the first end 1c of the horizontal support 1.

[0151] In the Figure 6The locking hook 14 is in particular in the unlocking position 13 and is released from the ceiling support 3. For clarity, the ceiling support 3 is in the Figure 6 , analogous to the Figure 5 , shown in cross-section. In the unlocking position 13, the locking hook 14 can in particular be pivotable in order to release the locking hook 14 from the ceiling support 3.

[0152] In order to move, in particular to pivot, the locking hook 4 between the locking position 12 and the unlocking position 13, various designs are possible. In the exemplary embodiment, an embodiment is shown in which the locking hook 14 can pivot about a locking hook axis 14b of the horizontal support 1. However, the exemplary embodiment is not limited to this. By means of the fixing member, which in the exemplary embodiment is preferably designed as a fixing wedge 19, the locking hook 14 can be fixed in the locking position 12, so that the locking hook 14 cannot pivot about the locking hook axis 14b. As soon as the fixing wedge 19 is brought into a position in which it no longer fixes the locking hook 14, the locking hook 14 can be moved from the locking position 12 into the unlocking position 13, preferably by a pivoting movement in which the projection of the locking hook 14 orthe recess 14a is pivoted upwards, into the unlocking position 13.

[0153] In the unlocking position 13, the locking hook 14 preferably no longer projects beyond the first end 1a of the horizontal beam 1. This is in the Figure 6 shown accordingly.

[0154] The Figure 7 contains a schematic detailed view of a possible design of the fixing wedge 19 of the locking hook 14. It may be advantageous if the fixing wedge 19 is displaceable along its longitudinal axis, as in the Figure 7indicated by a double arrow, and is arranged at least approximately orthogonally to the locking hook 14. The fixing wedge 19 can have a first section 19a, which in the locking position 12 engages positively and / or non-positively in a recess 15 of the locking hook 14, for example in at least one undercut 15a. In the embodiment shown, the recess 15 is in particular T-shaped, which in the Figures 5 and 6is even more clearly visible. Furthermore, the first section 19a of the fixing wedge 19 has a cross-section with at least approximately the shape and size of the recess 15, in particular with at least one projection or bulge 25 which engages in a form-fitting manner in the undercut 15a. The first section 19a of the fixing wedge 19 preferably has a T-shaped cross-section, the horizontal extent of the T-cross-section forming the bulges 25 which engage in the undercuts 15a of the recess 15. In addition, the fixing wedge 19 can have a second section 19b which does not engage in the undercut 15a of the recess 15 of the locking hook 14. For this purpose, it can be provided in particular that the cross-section of the second section 19b has no bulge 25 orThe horizontal extension of the T-shaped cross-section, which engages the undercut 19a, is missing in the second section 19b compared to the first section 19a. The second section 19b thus has only the vertical extension of the T-shaped cross-section of the first section 19a.

[0155] In the context of the exemplary embodiment according to the Figure 7 The fixing wedge 19 fixes the locking hook 14 in the locking position 12 when the fixing wedge 19 is moved or pushed to the left, so that the first section 19a is positioned in the recess 15 of the locking hook 14. This position corresponds to the view in the Figure 5 .

[0156] In the locking position 12, the locking hook 14 cannot be pivoted, in particular perpendicular to the longitudinal axis of the fixing wedge 19.

[0157] The locking hook 14 can be moved or pivoted into the unlocking position 13 when the fixing wedge 19 is in the embodiment according to the Figure 7 is moved or pushed to the right so that the second section 19b is positioned in the recess 15 of the locking hook 14.

[0158] In the in the Figure 7In the embodiment shown, the fixing wedge 19 can have a transition region between the first section 19a and the second section 19b, in which the bulge 25 of the second section 19a decreases in a wedge shape towards the second section 19b, which has no bulge 25. As a result, the fixing wedge 19 can be displaced in the direction of its longitudinal axis in a simplified manner and can be clamped in the undercut 15a in the position in which the fixing wedge 19 fixes the locking hook 14. Furthermore, the fixing wedge 19 has a stop at each of its two ends, which prevents the fixing wedge 19 from being pushed through completely and thus falling down, or ensures that the fixing wedge 19 always remains at least loosely attached to the horizontal support 1.

[0159] The examples in the Figures 1 to 7 also serve to disclose a preferred embodiment of the device according to the invention.

[0160] The Figure 8 shows a schematic view of a formwork system or formwork with an embodiment of the device according to the invention for at least partially forming a concrete slab, wherein the arrangement of the formwork components shown can be continued analogously beyond the edge of the figure. The device has at least one first horizontal beam 1, 10, a second horizontal beam 11, a formwork panel 2 and four ceiling props 3, wherein one of the horizontal beams 10, 11 is fixed to at least two of the ceiling props 3, and wherein the formwork panel 2 can be fixed in a horizontal orientation between the horizontal beams 10, 11. On at least one first longitudinal side 1a of the first horizontal beam 1, 10 of the device, at least two folding hooks 4 are formed for fixing the formwork panel 2. The horizontal beams 10, 11 can preferably be horizontal beams 1 according to the Figures 1 to 7and the above description. Various embodiments of the folding hooks 4 are also Figures 1 to 7 can be found in the Figure 8 the folding hooks 4 are not visible.

[0161] In the device according to the invention or in the formwork systems, in particular more than two horizontal beams 1, 10, 11, more than one formwork panel 2 and / or more than four ceiling supports 3 can be provided, preferably exactly as many as are necessary to form a sufficiently large formwork surface for pouring the planned concrete ceiling.

[0162] It should be noted that the first horizontal beam 10 and the second horizontal beam 11 can each correspond to a horizontal beam 1 and, in this case, are essentially interchangeable, since the designations "first" and "second" are used primarily for reasons of differentiation. However, only the first horizontal beam 10 can optionally have the features according to the invention, whereby the second horizontal beam 11 does not need to have folding hooks 4, but must be suitable for securing or supporting the second side 2b of the formwork panel 2.

[0163] It has also proven advantageous within the scope of the device if the folding hooks 4 of the first horizontal beam 1, 10 can be adjusted to at least a supporting position 5 and a formwork position 6, wherein in the supporting position 5, an upper side of the folding hooks 4 forms an at least approximately horizontal support surface 7 for a first side 2a of the formwork panel 2. The supporting position 5 can be transferred to the formwork position 6, in particular by pressure from below against the folding hooks 4.In the formwork position 6, space can be released in the vertical direction on a front side of the folding hooks 4 facing away from the first longitudinal side 1a of the first horizontal beam 1, 10 in order to pivot the first side 2a of the formwork panel 2 upwards from bottom to top past the folding hooks 4, while an opposite second side 2b of the formwork panel 2 is carried by at least two, preferably exactly two, folding hooks 4 and / or immovable support hooks 9 of the second horizontal beam 11.

[0164] The second side 2b of the formwork panel 2 with the second horizontal support 11 preferably forms a rotation axis 16 for pivoting the formwork panel 2 upwards.

[0165] Not shown in detail in the exemplary embodiment, but advantageously combined with the solution of the folding hooks 4 for simplified installation of the formwork panel 2 on one of the horizontal beams 1, 10, 11, is that a latching hook 14 movable between a locking position 12 and an unlocking position 13 can be formed at a first end 1c and / or a second end 1d of the first horizontal beam 1, 10 and / or the second horizontal beam 11 for securing to one of the ceiling supports 3. This can enable simplified installation of the horizontal beams 1, 10, 11 on the ceiling supports 3.

[0166] Particularly preferred is an arrangement of the components of the device such that the ceiling supports 3, the horizontal beams 1, 10, 11 and the formwork panels 2 form a plane upwards, which in particular forms a formwork surface.

[0167] In the device it is preferably provided that two horizontal beams 1, 10, 11 each carry three formwork panels 2.

[0168] The examples in the Figures 1 to 8 also serve to disclose a method for at least partially forming and removing formwork from a concrete slab. Furthermore, the Figures 9a to 9e and the Figure 10 individual steps of the procedure in principle, as described in more detail below. Figures 9a to 9e The formwork is shown schematically and highly simplified from above in various steps or snapshots of the process.

[0169] The method according to the invention for at least partially forming a concrete ceiling using at least four ceiling supports 3, a first horizontal beam 1, 10, a second horizontal beam 11 and at least one formwork panel 2 preferably comprises at least the following steps: (a) Erecting at least four of the ceiling supports 3; (b) Fixing the first horizontal beam 1, 10 and the second horizontal beam 11 between each two of the ceiling supports 3, wherein the horizontal beams 1, 10, 11 each run in pairs parallel to one another at least approximately at a distance of one length of the formwork panel 2; (c) Placing a second side 2b of the formwork panel 2 on at least one folding hook 4 on a long side of the second horizontal beam 11 facing the first horizontal beam 1, 10, wherein the folding hook 4 is in a supporting position 5 in which the folding hook 4 forms an at least approximately horizontal support surface 7 for the formwork panel 2, or placing a second side 2b of the formwork panel 2 on at least one immovable support hook 9 of the second horizontal beam 11, such that in both variants the second horizontal beam 11 and the formwork panel 2 form a rotation axis 16;(d) pivoting up a first side 2a of the formwork panel 2; (e) guiding the first side 2a of the formwork panel 2 from bottom to top along at least one folding hook 4 of the first horizontal beam 1, 10, which runs parallel to the second horizontal beam 11 at least approximately at a distance equal to the length of the formwork panel 2, wherein the folding hook 4 is brought into a formwork setting position 6 by the upward pivoting of the formwork panel 2, in which the projection of the folding hook 4 beyond the first longitudinal side 1a is less than in the supporting position 5; (f) placing the first side 2a on the folding hook 4 of the first horizontal beam 1, 10, wherein the folding hook 4 is designed such that the folding hook 4, after the first side 2a of the formwork panel 2 has been guided past the folding hook 4, preferably independently, transitions into the supporting position 5, and wherein the formwork panel 2 assumes a horizontal orientation.

[0170] It should be noted that, for example, for the assembly of formwork systems with a larger number of horizontal beams 1, 10, 11, formwork panels 2 and / or floor props 3 or of several connected devices according to the invention, groups of steps and / or individual steps of the method according to the invention can be repeated iteratively as required until the desired or required state of the formwork is achieved.

[0171] The Figure 9a represents step (b) in principle, whereby it is an intermediate stage of step (b), in which the horizontal beam 1, 10, 11 is initially fixed with one end to one of the floor supports 3.

[0172] In one embodiment of the method according to the invention, step (b) may in particular comprise the following sub-steps: (b1) Suspending a fixed hook or a locking hook 14 formed at a second end 1d of one of the horizontal beams 1, 10, 11 onto a beam receptacle 17 of one of the ceiling supports 3, such that in both variants the second end 1d of the horizontal beam 1, 10, 11 and the ceiling support 3 form a pivot axis 18; (b2) Pivoting upward a first end 1c of the horizontal beam 1, 10, 11; (b3) Moving a locking hook 14 formed at the first end 1c of the horizontal beam 1, 10, 11 into a locking position 12, fixing the locking hook 14 in the locking position 12 with a fixing member, preferably a fixing wedge 19, and hooking the locking hook 14 onto the beam receptacle of another of the ceiling supports 3.

[0173] The Figure 9a in particular as a principle representation of the sub-step (b2), whereby the one on the left side of the Figure 9aThe horizontal beam 1, 10 shown is pivoted upwards (refer to the arrows), and the horizontal beam 1, 10 is still oriented at a downward angle. The pivoting upwards occurs particularly in the direction away from the plane of the drawing.

[0174] The Figure 9b represents the method for at least partially forming a concrete ceiling after completion of step (b), in one embodiment in particular of sub-step (b3), in principle.

[0175] In the Figure 9c , step (d) of the method according to the invention is shown in principle, wherein the formwork panel 2 is pivoted upwards (for which reference is made to the arrow illustration), and wherein the formwork panel 2 is still oriented at a downward angle. The upward pivoting occurs in particular in a direction away from the plane of the drawing.

[0176] The Figure 9dcontains a schematic representation of step (f), in particular after a single repetition of the method according to the invention or after completion of a part or a section of the formwork.

[0177] The Figure 9e finally shows a finished formwork after iterative repetition of the method according to the invention.

[0178] In particular, in addition to the Figure 9c , shows the Figure 10 Another schematic view of step (d), showing the partially assembled formwork from an oblique view above. It also indicates how an optional formwork support 23 can be used to pivot upwards (refer to the arrow illustration) a first side 2a of the formwork panel 2.

[0179] Once the formwork is fully installed, the slab can be poured using liquid concrete. To achieve minimum stability, the concrete must then at least partially harden. Only then can the formwork be removed.

[0180] The method according to the invention for at least partially removing the formwork from a concrete ceiling, which has previously been formed using at least four ceiling props 3, a first horizontal beam 1, 10, a second horizontal beam 11 and at least one formwork panel 2, in particular by means of a method according to the above description, preferably comprises at least the following steps: (g) lowering the first horizontal beam 1, 10 and the second horizontal beam 11, preferably by operating lowering wedges 20 on the ceiling supports 3; (h) if necessary.Supporting at least a first side 2a of the formwork panel 2; (i) Folding in at least one folding hook 4 on a first longitudinal side 1a of the first horizontal beam 1, 10, on which the formwork panel 2 rests with a first side 2a, preferably into a stripping position with a reduced projection of the folding hook 4 beyond the first longitudinal side 1a, wherein the folding hook 4 is preferably designed such that the folding hook 4 remains in the stripping position without external influence; (k) Swiveling down the first side 2a of the formwork panel 2, wherein a second side 2b of the formwork panel 2 continues to rest on at least one folding hook 4 and / or an immovable support hook 9 of the second horizontal beam 11; (m) Removing the second side 2b of the formwork panel 2 from the second horizontal beam 11; (n) If necessary, dismantling horizontal beams 1, 10, 11 that no longer support formwork panels 2; (o) if applicableDismantling of ceiling supports 3, which no longer support horizontal beams 1, 10, 11.

[0181] Some of these steps may be at least substantially analogous to formwork, being performed in at least approximately the reverse order. Accordingly, with regard to the demolding method, reference is made to the above-described embodiments and illustrations of the formwork method with the necessary modifications.

[0182] In particular, the Figure 9a can also be understood as a representation of step (n) in the formwork removal, whereby the arrow, viewed in the opposite direction, indicates the dismantling of one of the horizontal beams 1, 10, 11.

[0183] In one embodiment of the formwork removal method according to the invention, step (n) may in particular comprise the following sub-steps: (n1) if necessary, supporting at least a first end 1c of one of the horizontal beams 1, 10, 11; (n2) releasing a fixing member, preferably releasing a fixing wedge 19, which fixes a locking hook 14 at a first end 1c of the horizontal beam 1, 10, 11 in a locking position 12 in which the locking hook 14 is hooked onto a beam receptacle 17 of one of the ceiling supports 3, moving the locking hook 14 from the locking position 12 into an unlocking position 13 and unhooking the first end 1c of the horizontal beam 1, 10, 11 from the beam receptacle 17 of the ceiling support 3; (n3) Pivoting the first end 1c of the horizontal beam 1 downward about a pivot axis 18 at a second end 1d of the horizontal beam 1, wherein the second end 1d of the horizontal beam 1, 10, 11 continues to be supported by one of the ceiling supports 3; (n4) Removing the second end 1d of the horizontal beam 1, 10, 11 from the ceiling support 3.

[0184] Furthermore, the Figure 9c alternatively be seen as a representation of step (k) in the formwork removal, where the arrow, viewed in the opposite direction, indicates the downward pivoting of the first side 2a of the formwork panel 2. The same applies to the Figure 10 analogue.

[0185] The features of the various embodiments of the horizontal beam 1, 10, 11 according to the invention, the horizontal beams 1, 10, 11 mentioned in the context of the device according to the invention and the horizontal beams 1, 10, 11 mentioned in connection with the formwork or stripping methods according to the invention can be combined with one another as desired, provided this is not technically impossible. List of reference symbols:

[0186] 1Horizontal beam 1aFirst long side (of horizontal beam 1) 1bSecond long side (of horizontal beam 1) 1cFirst end (of horizontal beam 1) 1dSecond end (of horizontal beam 1) 2Formwork panel 2aFirst side (of formwork panel 2) 2bSecond side (of formwork panel 2) 3Slab prop 4Folding hook 5Supporting position 6Forming position 7Support surface 8Nose 9Fixed support hook 10First horizontal beam 11Second horizontal beam 12Locking position 13Unlocking position 14Locking hook 14aRecess (of locking hook 14) 14bLocking hook axis 15Recess 15aUndercut 16Rotation axis 17Beam holder 17aProtrusion (of beam holder 17) 18Pivoting axis 19Fixing wedge 19aFirst section (of the fixing wedge 19) 19bSecond section (of the fixing wedge 19) 20Lowering wedge 21Groove 22Pin 23Formwork aid 24Guide rail 25Bump 26Second beam holder

Claims

1. Horizontal beam (1) for fixing at least one formwork panel (2) for at least partially forming a concrete ceiling, characterized in that at least one folding hook (4) for securing the formwork panel (2) is formed on at least one first longitudinal side (1a) of the horizontal support (1).

2. Horizontal beam (1) according to claim 1, characterized in that a lower region or an upper region of the folding hook (4) is articulated to the horizontal support (1), preferably to the first longitudinal side (1a) of the horizontal support (1).

3. Horizontal beam (1) according to claim 1 or 2, characterized in thatthe folding hook (4) is adjustable at least into a carrying position (5) and into a formwork position (6), wherein the folding hook (4) is positioned in the carrying position (5) when the horizontal support (1) is used as intended in such a way that the formwork panel (2) can be fixed to the folding hook (4) in a horizontal orientation, and wherein a projection of the folding hook (4) over the first longitudinal side (1a) is smaller in the formwork position (6) than in the carrying position (5).

4. Horizontal beam (1) according to claim 3, characterized in that in the carrying position (5) an upper side of the folding hook (4) forms an at least approximately horizontal support surface (7) for the formwork panel (2).

5. Horizontal beam (1) according to claim 3 or 4, characterized in that the folding hook (4) can be transferred from the carrying position (5), in particular by pressure against the folding hook (4) with a pressure component in the direction of the first longitudinal side (1a), into the formwork position (6).

6. Horizontal beam (1) according to claim 3, 4 or 5, characterized in that the folding hook (4) is arranged and designed to move automatically from the shuttering position (6) into the carrying position (5) when no external pressure component acts on the folding hook (4) and / or the folding hook (4) moves from the shuttering position (6) into the carrying position (5) by means of a spring force and / or by means of a preferably elastic restoring force.

7. Horizontal beam (1) according to one of claims 1 to 6, characterized in that the folding hook (4) can be adjusted into a dismantling position, wherein preferably in the dismantling position a projection of the folding hook (4) over the first longitudinal side (1a) is less than in the carrying position (5) and preferably also less than in the shuttering position (6).

8. Horizontal beam (1) according to one of claims 1 to 7, characterized in thaton a second longitudinal side (1b) of the horizontal support (1) at least one folding hook (4) and / or one immovable support hook (9) is formed for securing a further formwork panel (2).

9. Horizontal beam (1) according to one of claims 1 to 8, characterized in that at a first end (1c) and / or at a second end (1d) of the horizontal support (1) a latching hook (14) movable between a locking position (12) and an unlocking position (13) is formed for fixing to a ceiling support (3).

10. Device for at least partially formwork a concrete ceiling, comprising at least one first horizontal beam (1, 10), a second horizontal beam (11), a formwork panel (2) and four ceiling supports (3), wherein one of the horizontal beams (10, 11) is fixed to at least two of the ceiling supports (3), and wherein the formwork panel (2) can be fixed in a horizontal orientation between the horizontal beams (10, 11), characterized in that at least two folding hooks (4) for securing the formwork panel (2) are formed on at least one first longitudinal side (1a) of the first horizontal support (1,10).

11. Device according to claim 10, characterized in thatthe folding hooks (4) of the first horizontal support (1, 10) are adjustable at least into a carrying position (5) and a formwork position (6), wherein in the carrying position (5) an upper side of the folding hooks (4) forms an at least approximately horizontal support surface (7) for a first side (2a) of the formwork panel (2), wherein the carrying position (5), in particular by pressure from below against the folding hooks (4), can be transferred into the formwork position (6), and wherein in the formwork position (6) space is released in the vertical direction on a front side of the folding hooks (4) facing away from the first longitudinal side (1a) of the first horizontal support (1, 10) in order to pivot the first side (2a) of the formwork panel (2) upwards from bottom to top past the folding hooks (4), while an opposite second side (2b) of the formwork panel (2) is supported by at least two folding hooks (4) and / or immovable support hooks (9) of the second horizontal support (11).

12. A method for at least partially forming formwork for a concrete ceiling using at least four ceiling props (3), a first horizontal beam (1, 10), a second horizontal beam (11) and at least one formwork panel (2), comprising at least the following steps: (a) erecting at least four of the ceiling props (3); (b) securing the first horizontal beam (1, 10) and the second horizontal beam (11) between two of the ceiling props (3), the horizontal beams (1, 10, 11) each running in pairs parallel to one another at least approximately at a distance of one length of the formwork panel (2);(c) placing a second side (2b) of the formwork panel (2) on at least one folding hook (4) on a longitudinal side of the second horizontal support (11) facing the first horizontal support (1, 10), the folding hook (4) being in a supporting position (5) in which the folding hook (4) forms an at least approximately horizontal support surface (7) for the formwork panel (2), or placing a second side (2b) of the formwork panel (2) on at least one immovable support hook (9) of the second horizontal support (11) such that in both variants the second horizontal support (11) and the formwork panel (2) form a rotation axis (16); (d) pivoting up a first side (2a) of the formwork panel (2);(e) guiding the first side (2a) of the formwork panel (2) from bottom to top along at least one folding hook (4) of the first horizontal support (1, 10), which runs parallel to the second horizontal support (11) at least approximately at a distance equal to the length of the formwork panel (2), wherein the folding hook (4) is brought into a formwork-setting position (6) by pivoting the formwork panel (2) upwards, in which the projection of the folding hook (4) beyond the first longitudinal side (1a) is less than in the supporting position (5); (f) placing the first side (2a) on the folding hook (4) of the first horizontal support (1, 10), wherein the folding hook (4) is designed such that the folding hook (4) transitions, preferably independently, into the supporting position (5) after the first side (2a) of the formwork panel (2) has been guided past the folding hook (4), and wherein the formwork panel (2) assumes a horizontal orientation; 13. The method according to claim 12, wherein step (b) comprises the following substeps: (b1) suspending an immovable hook or a locking hook (14) formed on a second end (1d) of one of the horizontal beams (1, 10, 11) from a beam receptacle (17) of one of the ceiling supports (3), such that in both variants the second end (1d) of the horizontal beam (1, 10, 11) and the ceiling support (3) form a pivot axis (18); (b2) pivoting upwards a first end (1c) of the horizontal beam (1, 10, 11); (b3) Moving a locking hook (14) formed on the first end (1c) of the horizontal support (1, 10, 11) into a locking position (12), fixing the locking hook (14) in the locking position (12) with a fixing member, preferably a fixing wedge (19), and hooking the locking hook (14) onto the support receptacle of another of the ceiling supports (3).

14. A method for at least partially removing the formwork from a concrete ceiling which has previously been formed using at least four ceiling props (3), a first horizontal beam (1, 10), a second horizontal beam (11) and at least one formwork panel (2), in particular by means of a method according to claim 20 or 21, comprising at least the following steps: (g) lowering the first horizontal beam (1, 10) and the second horizontal beam (11), preferably by actuating lowering wedges (20) on the ceiling props (3); (h) if necessary.Supporting at least a first side (2a) of the formwork panel (2); (i) Folding in at least one folding hook (4) on a first longitudinal side (1a) of the first horizontal support (1, 10) on which the formwork panel (2) rests with a first side (2a), preferably into a stripping position with a reduced projection of the folding hook (4) beyond the first longitudinal side (1a), wherein the folding hook (4) is preferably designed such that the folding hook (4) remains in the stripping position without external influence; (k) Swiveling down the first side (2a) of the formwork panel (2), wherein a second side (2b) of the formwork panel (2) continues to rest on at least one folding hook (4) and / or an immovable support hook (9) of the second horizontal support (11); (m) Removing the second side (2b) of the formwork panel (2) from the second horizontal support (11); (n) if necessary, dismantling of horizontal beams (1, 10, 11) which no longer support formwork panels (2); (o) if necessaryDismantling of ceiling supports (3) which no longer support horizontal beams (1,10,11).

15. The method according to claim 14, wherein step (n) comprises the following sub-steps: (n1) optionally supporting at least a first end (1c) of one of the horizontal beams (1, 10, 11); (n2) releasing a fixing member, preferably releasing a fixing wedge (19), which orwhich fixes a locking hook (14) at a first end (1c) of the horizontal support (1, 10, 11) in a locking position (12), in which the locking hook (14) is hooked onto a support receptacle (17) of one of the ceiling supports (3), moving the locking hook (14) from the locking position (12) into an unlocking position (13) and unhooking the first end (1c) of the horizontal support (1, 10, 11) from the support receptacle (17) of the ceiling support (3); (n3) pivoting the first end (1c) of the horizontal support (1) downward about a pivot axis (18) at a second end (1d) of the horizontal support (1), wherein the second end (1d) of the horizontal support (1, 10, 11) continues to be supported by one of the ceiling supports (3); (n4) Removing the second end (1d) of the horizontal beam (1,10,11) from the ceiling support (3).

Images