DE102004004883B4 - Ceiling formwork panel and system ceiling formwork - Google Patents

Abstract

Ceiling formwork panel (1) which has a frame (2) and support devices (3, 4) on opposite sides in the longitudinal direction (L), by means of which the ceiling formwork panel (1) can be supported, it being provided that from in the longitudinal direction (L) opposing support devices (3, 4) at least on one side of the ceiling formwork panel (1) the respective support device (4) there is held adjustable in position on the frame (2) so that the external longitudinal distance (A) between the longitudinally ( L) opposite support devices (3, 4) is variable, with at least one support device (4) being attached to the frame (2) so as to be pivotable about an axis of rotation (8) of each of the mutually opposite support devices (3, 4) , characterized in that on one side of the ceiling formwork panel (1) provided support devices (4) for synchronous position-related adjustment with a common shaft (7) are the, which is held on the frame (2) rotatably about the axis of rotation (8).

Description

According to claim 1, the present invention relates to a ceiling formwork panel which has a frame and support devices on opposite sides in the longitudinal direction, by means of which the ceiling formwork panel can be supported, it being provided that of support devices which are opposite in the longitudinal direction, at least one side of the ceiling formwork panel the respective support device there is held adjustable in position on the frame, so that the external longitudinal distance between the support devices opposite each other in the longitudinal direction is variable, with at least one support device each being attached to the frame about an axis of rotation of mutually opposite support devices in the longitudinal direction.

The present invention relates to a ceiling formwork panel which has a frame and support devices on opposite sides in the longitudinal direction, by means of which the ceiling formwork panel can be supported; the respective support device there is held adjustable in position on the frame, so that the external longitudinal distance between the mutually opposite support devices in the longitudinal direction is variable, with a support device held adjustable in position on the frame is provided, which has a hooking strip that extends at least substantially along a transverse to Extends the longitudinal direction of the ceiling formwork panel extending side length of the ceiling formwork panel.

A ceiling formwork panel is from the DE 30 04 245 A1 known. The support devices opposite in the longitudinal direction are each formed as an end-face rigid frame component of the circumferential frame. To attach the slab formwork panel to the DE 30 04 245 A1 To support the ceiling formwork scaffolding also described, the end frame sections can be set down on flanges provided with protruding tongues of cross members and / or on support surfaces of drop heads of vertical supports. The rigid frame face is engaged from behind by the tongues on the inside and rests on a cross member on the outside so that a form fit is formed in the longitudinal direction. After a concrete ceiling has been concreted, the support plates of the drop heads with the cross girders and ceiling form panels held on them can be attached to the described system ceiling formwork

Removal can be lowered by a certain height, while the support with the drop head continues to support the concrete ceiling at certain points on the top. In this context, such known ceiling formwork panels have the restriction that they can only be removed in the course of the formwork if they can be rotated into a necessary position in the space remaining between the lowered crossbeams and the concrete ceiling, that is, if they pass through Lift can lift their external system on the cross members. This requirement applies to the in DE 30 04 245 A1 formwork scaffolding described fulfilled by a suitable lowering path is provided. On the other hand, with the smallest possible lowering path in ceiling formwork systems, a correspondingly lower free fall of the ceiling formwork when lowering the drop heads is preferred because of the lower risk of accidents and uncertainty, while cross members and panel frames with a correspondingly large profile height are required for high loads. This means that conventional ceiling formwork panels, depending on the choice of their structural height and the intended lowering height of the drop heads on formwork scaffolding, reach their limits in terms of handling.

Ceiling formwork panels of the type mentioned are made in the prior art US 3689020 A known. Furthermore it is off EP 0054131 A1 a formwork system for ceiling formwork is known. With regard to known slab formwork with supports and formwork panels, the prior art also refers to DE 19629321 A1 to point out.

Proceeding from this, the invention relating to a ceiling formwork panel according to the preamble of claim 1 is based on the object of further developing such a ceiling formwork panel in an advantageous manner.

Also proceeding from the mentioned prior art, the invention relating to the ceiling formwork panel according to the preamble of claim 2 is based on the object of further developing such a ceiling formwork panel in a use-advantageous manner.

With regard to claim 1, the object is achieved by the fact that support devices provided on one side of the ceiling formwork panel for synchronous position-related adjustment are connected to a common shaft which is held on the frame so that it can rotate about the axis of rotation. In view of the fact that it is provided that at least one support device of each opposing support device in the longitudinal direction is attached to the frame of the ceiling formwork panel so that it can pivot about an axis of rotation, a corresponding support of the ceiling formwork panel can be designed to be pivotable on one side. To facilitate handling, it is provided that support devices provided on one side of the ceiling formwork panel are connected to a common shaft which is held on the panel frame so as to be rotatable about an axis of rotation. The outer longitudinal distance denotes the distance in the longitudinal direction between the respective outer edges of the support devices in the longitudinal direction. Due to the adjustability of the position of support devices according to the invention, the external longitudinal distance in a selectable support position of the adjustable support device for supporting the ceiling formwork panel can be matched to a preferred lateral distance from cross members or drop heads selected for support. On the other hand, for removal in a so-called handling position, the outer longitudinal distance can be reduced, so that the ceiling formwork panel can be removed from the lowered cross members and drop heads without having to be lifted completely above its frontal side contact. Rather, a slight lifting can be sufficient for the position-adjustable support device to be displaceable from the support position into the handling position in which the ceiling formwork panel can be removed from the supporting structure described below due to the reduced external longitudinal distance. In terms of use, this has the advantage that the ceiling formwork panel can also be used in system ceiling formwork whose low lowering height of the drop heads (ie the low lowering height of the support elements of the drop heads) does not allow sufficient lifting to swivel out the panels appropriately. Furthermore, an ergonomic improvement is also achieved in that only a very slight, ie energy-saving, lifting is required to remove the ceiling formwork panel. In addition, due to the positional adjustability of support devices on one side of the panel, because there is basically more free space, the slab formwork panel can basically also be shuttered from below and also retracted again, which significantly increases work safety.

The object is also achieved by the subject matter of claim 2, which is based on the fact that the hooking bar is held at both ends with a holding element on the frame, the two holding elements for pivoting the hooking bar with a common shaft having a handle are connected, which is rotatably held on the frame about an axis of rotation.

It is preferred that the ceiling formwork panel can be supported by means of the support devices on spaced transverse girders and / or drop heads of vertical supports of a ceiling formwork framework.

It is particularly preferred that the axis of rotation is oriented perpendicular and / or plane-parallel to the longitudinal direction of the ceiling formwork panel. As an alignment parallel to the plane, it is preferred that the axis of rotation is parallel to the formwork plane, i.e. H. is arranged parallel to this plane. Particularly when the two features are combined, a course of the axis of rotation is achieved which saves space with regard to the frame plane and, as will be explained, is at the same time advantageous for the derivation of supporting forces. It is also preferred that the position-adjustable support device or position-adjustable support devices come into a first stop against the frame in a support position. On the one hand, the stop can be used to automatically adjust the position of a support device in an adjustment direction just enough so that the desired adjustment, for example, rotational position of the support device, in particular a desired external longitudinal distance with the opposite support device, is obtained. The stop can, for example, be formed by a projection protruding from the frame perpendicular to the plane of rotation when the support device can be rotated about the said axis of rotation, for example by a flange protruding outward on the top of the frame, against which the support device is in the support position when rotated about the axis of rotation enters into plant. In this context, it is also preferred that, in the support position, the external longitudinal distance of support elements lying opposite in the longitudinal direction has a maximum value with respect to the position adjustment range of the position-changeable support device. In a possible combination with the preceding feature, this means that in the support position, when the adjustable support device is in positive contact with the stop, the greatest possible external longitudinal distance is obtained, which is therefore inevitably reduced in the event of an adjustment movement. Correspondingly, it is expedient if the position-adjustable support device comes into a second stop against the frame in a handling position which is suitable for assembly / disassembly of the ceiling formwork panel with regard to the resulting external longitudinal distance. Here, a shape is particularly expedient in which, starting from the handling position, only an increase in the external longitudinal distance can automatically be achieved during an adjustment movement of the support device. A projection of the panel frame can in turn serve for the corresponding form fit (for example likewise the upper flange), against which another surface of the support device, which is in the correct position for this purpose, comes into contact.

In order to support the ceiling formwork panel on a ceiling formwork scaffolding, which is preferably cross girder with laterally has protruding grooves running in the longitudinal direction and drop heads with grooves emanating from a lowerable support plate to enable interlocking against horizontal displacements, the support device can have engagement elements protruding on the underside for form-fitting engagement in the grooves of the ceiling formwork framework and preferably side contact elements for lateral contact with cross members and / or have falling heads of the slab formwork scaffolding. The support device of a ceiling formwork panel according to claim 1 can, for example, be manufactured on the basis of a plate-like blank, with different areas of the plate contour each forming an engagement element and a side contact element. Due to their position in relation to the passage of the axis of rotation, a triangle in particular can be described in the plane of the plate or in the plane of rotation. The support device opposite an adjustable support device in the longitudinal direction of the ceiling formwork panel can, regardless of the specific aforementioned shape, be axially symmetrical with respect to a line perpendicular to the formwork plane, but preferably rigidly connected to the panel frame, so that an overall symmetrical and The result is a structure that is easy to manufacture. Alternatively or in combination, it is further preferred that, in the support position, the outer longitudinal distance of engagement elements and / or side contact elements that are assigned to one another and are assigned to one another in the longitudinal direction have a maximum value with respect to the position adjustment range. A design in which the support devices each have one or more contact areas located in a respective contact plane (e.g. on the engagement and side contact elements) and in which the respective contact plane in the support position is oriented in the direction of rotation perpendicular to the formwork plane is also favorable for assembly . It is also possible, but not necessarily, that, in the support position, the greatest external longitudinal distance from support devices lying opposite in the longitudinal direction also corresponds to the total length of the ceiling formwork panel in the longitudinal direction.

In a special further embodiment, it is preferred that, in the support position of an adjustable support device, its upper contact area extends approximately at the height of the axis of rotation. In combination with the previously described feature that the support device in the support position positively engages against a flange protrusion protruding on the upper side, an arrangement is achieved in which the bearing forces arising during concreting are diverted directly into the formwork structure, i.e. do not lead to overloading of the pivot bearing. Unintentional triggering of the slab formwork panel due to loads on the slab or formlining is not possible either, since to release the slab formwork panel, the drop-head plate must first be lowered and the slab formwork panel slightly lifted out to unlock the engagement elements.

In particular, the frame can have two longitudinal members running in the longitudinal direction and connected by cross members. In the case of a ceiling formwork panel according to claim 1, the shaft ends carrying the support devices can protrude transversely over the outer walls of the longitudinal beams. Space-saving and ergonomically favorable at the same time is a design in which a handle is attached to the shaft between the longitudinal members to facilitate the adjustment process. With regard to the plane of rotation, the handle can extend from the shaft essentially parallel to the aforementioned contact plane defined by the contact areas, so that with the handle, at the same time, a control means is available on the underside of the panel for an alignment of the contact plane that has just been reached.

The ceiling formwork panel can have a formwork skin on the upper side, which preferably protrudes laterally over the frame and in particular the supporting devices. Especially in the case of supporting devices arranged laterally outside the longitudinal beams, there is thus the possibility of a practically continuous formwork skin being formed by several ceiling formwork panels adjacent transversely to the longitudinal direction. In relation to a single slab formwork panel, the formwork skin can also be composed of several panels or of a continuous, i.e. H. be formed in one piece plate. The formwork skin can be screwed to the ceiling formwork panel, for example, on a flange of the frame, but it can also be fastened in other suitable ways so that it can be removed together with the frame during the formwork removal. To achieve a long service life, i. H. Frequent reusability with the frame, the formwork skin can preferably be made of polypropylene sheet. This can have a reinforcement made of fiber material, for example made of long glass fibers, to increase the load-bearing capacity. During assembly and dismantling as well as during transport of the ceiling formwork panel, handling can be facilitated by two carrying handles, preferably arranged symmetrically to the center of gravity of the ceiling formwork panel, at a distance from one another in the longitudinal direction. It is further preferred that in the longitudinal direction the distance between the two handles corresponds approximately to the distance between the handle of the shaft and the handle closest to it, so that the grip around the same, i.e. H. the usual distance.

The previously described possibilities for developing a ceiling formwork panel according to the invention relate in particular Embodiments in which a plurality of locally delimited, laterally spaced support or support points are present on opposite panel sides due to the support devices. For example (also with reference to the first embodiment shown in the figures) on both panel sides support devices each with an engagement element and a side contact element can be provided in pairs, ie with the provision of four support or support points per panel side.

A ceiling formwork panel according to claim 2 comprises a support device which is held in a position-adjustable manner on the frame and which has a hooking strip which extends at least substantially along a side length of the same extending transversely to the longitudinal direction of the ceiling formwork panel. A continuous longitudinal groove can be made in the hooking strip. There is the possibility that the support device opposite the support device held adjustably on the frame in the longitudinal direction also has a hooking strip which extends at least essentially along a side length of the ceiling formwork panel running transversely to the longitudinal direction of the ceiling formwork panel. There is the possibility that a continuous longitudinal groove is made in a respective hooking strip. Said longitudinal groove is suitable for hooking into a number of hooking elements of a system ceiling formwork, in particular according to the present invention. In such an embodiment, on one side of the panel, instead of, for example, locally limited supports in pairs, there is a continuous hooking strip that preferably extends over the entire side of the panel. This enables a more versatile and particularly safe use also on system slab formwork in which, for example, hooking ribs of transverse girders do not directly connect in their longitudinal direction to hooking webs of drop heads or, for example, even only isolated hooking elements are present. On the one hand, the extension of the hooking strip with regard to the said distances between hooking elements achieves greater independence in the positioning of the ceiling formwork panels transversely to their longitudinal direction. On the other hand, even a limited lateral projection of the ceiling formwork panel over an edge-side vertical support or over a free cross-member edge is possible during assembly, for example to easily achieve a flush wall finish. For this purpose, the hooking strip can have a cross-section with a high bending resistance moment in the loading direction, so that, for example, with a preferred width of about 0.45 m of the ceiling formwork panel, depending on the specific design, a lateral overhang of up to about 0.1 m is conceivable. Due to the possible lateral overhang, the assembly of a ceiling formwork can also begin in such a way that the first ceiling formwork panel is pushed against the side (concrete) wall, additional ceiling formwork panels are connected and the various lengths of cross beams, depending on the room size, The lateral position of a ceiling formwork panel in relation to the cross member supporting it is arbitrary except for the restriction of a maximum lateral overhang, which must be observed for safety reasons. For an expedient configuration of such a support device providing a linear support, at least one holding element can furthermore be provided with which the hooking strip is held on the frame at a distance parallel to a side edge of the frame carrying the formwork skin. In particular, the hooking strip can be held pivotable about an axis of rotation that is perpendicular to the longitudinal direction of the ceiling formwork panel and / or parallel to the formwork plane. A stable configuration is possible, for example, in that the hooking strip is held on the frame at both ends with a holding element each. To pivot the hooking bar, the two holding elements can be connected to a common shaft which has a handle and which is held on the frame so as to be rotatable about the said axis of rotation. The holding elements can moreover be designed, for example, in the manner of a plate with an essentially triangular contour, reference being made to the preceding description with regard to further possibilities for design and arrangement. It is also preferred that a holding element comes into abutment against the frame in a support position in which the external longitudinal distance of opposing support elements in the longitudinal direction of the ceiling formwork panel and / or in a handling position with a reduced external longitudinal distance. A further development of the ceiling formwork panel according to the invention, which is advantageous in terms of handling safety, is basically also possible in that a spring element is provided, the spring force of which holds the support device adjustable on the frame in the support position. This means that during shuttering, even if a handle assigned to the adjustable supporting device is not grasped, the supporting position of the supporting device required for the support is automatically set. A leg spring can preferably be provided as the spring element, the first leg of which is more preferably supported from below, for example against the formwork skin of the ceiling formwork panel, and its second leg on the shaft connecting the holding elements, in particular on their handle, under spring action. With regard to the aforementioned longitudinal groove, it is preferred that this be open at the bottom in the installation position of the ceiling formwork panel suitable for concreting, so that a particularly simple placement on a hooking web and / or a hooking rib can take place. Furthermore, as will be explained in more detail below, it is expedient if the hooking strip forms an inclined surface sloping towards the frame on the top side in the installation position of the ceiling formwork panel.

The present invention also relates to a system ceiling formwork, comprising vertical supports that preferably each carry a drop head on the top, and cross members that can be supported on the drop heads, as well as ceiling formwork panels that can be attached to spaced cross members and / or drop heads.

A system ceiling formwork of this type is also used in the DE 30 04 245 A1 described. In this known system ceiling formwork, the ceiling formwork panels have a frame whose rigid end-face profile sections serve as support devices on the one hand with a lower edge for hanging in grooves on crossbeams and drop heads and their overlying end faces for lateral contact with the crossbeams. Compared to the vertical extension of the lateral system, the lowering path of the drop heads is significantly larger. After concreting and lowering the drop heads (ie drop head support plates) with the cross members, the slab formwork panels can therefore be raised in the space beyond the cross members and swiveled down for removal. However, with the large lowering path, a great fall height of the ceiling formwork must be accepted, and the lifting of the ceiling formwork panels over the crossbeam represents a high burden on the operating personnel in view of the weight. Based on this, this aspect of the present invention is based on the object to further develop a generic slab formwork system in an advantageous manner.

This object is achieved in the subject matter of claim 21. When using a ceiling formwork panel, in which at least one support device is held in a position-adjustable manner on the panel frame of the support devices lying opposite one another in the longitudinal direction, so that the external longitudinal distance between the longitudinally opposite support devices is variable, on the one hand, practically backlash-free lateral support of the panel on both sides is advantageous and on the other hand, a problem-free removal of the panel after concreting is achieved without the panel having to be lifted completely to over the cross members or drop heads. In particular, there is the possibility that position-adjustable support devices are pivotable as supports on the ceiling formwork panel, preferably about an axis of rotation that is perpendicular to the longitudinal direction of the panel and parallel to the plane, in particular parallel to the plane of the formwork. Furthermore, in connection with the engagement elements and / or side contact elements already explained with reference to the ceiling formwork panel according to the invention and their preferred design and arrangement relative to the axis of rotation, the possibility is created for the ceiling formwork panel to face in grooves of the crossbeam and / or the drop head horizontal shifts can be supported and hooked, whereby tilting of the ceiling formwork panels is excluded with an arrangement with practically no play in the longitudinal direction. The system ceiling formwork according to the invention can preferably have components of a ceiling formwork known on the market by the applicant under the name “TITAN-HV” ®, as well as ceiling formwork panels according to the invention. The known components mentioned can in particular be the vertical supports carrying a drop head on the top and so-called main girders and / or secondary girders as cross girders, each of which can be optionally supported on drop heads and laterally on other main girders, with the upper side of the main and secondary girders lies in a common plane. In the ceiling formwork frame referred to, grooves are provided for interlocking, which protrude laterally from lowerable support plates of the drop heads as well as on the main girders running in the longitudinal direction on both sides. For the optional assignment or support of the components to one another or the ceiling formwork panels to the components, the main and secondary beams on the end faces and preferably ceiling formwork panels on the end faces have engagement elements which have a web-like cross section adapted to the shape of the channel. By engaging the channel, a form-fitting connection can be achieved transversely to the channel, through which unintentional slipping and thus loosening in the longitudinal direction can be avoided even after only one side of a longitudinal or cross member or a ceiling formwork panel has been hooked in. Furthermore, the main and / or secondary girders as well as in particular also the ceiling formwork panels on the support devices above the engagement elements each have side contact elements or side contact surfaces on the front side. These are adapted in terms of their shape and relative position to the engagement element in order to rest against opposing abutment elements or opposing abutment surfaces of the main beam or the drooping head with an optional support on a main beam or a drop head with the desired alignment set at the same time. The opposing contact surface, which is preferably located above the channel, can be formed on the part of a main beam by its lateral profile wall and on the part of a drop head preferably by the front edges of a top plate that cannot be lowered. at Corresponding support on both sides of a main girder, secondary girder, or ceiling formwork panel, a practically backlash-free and tilt-proof as well as torsion-proof mount is achieved overall. From a plurality of ceiling formwork panels, main girders and, if necessary, secondary girders and drop heads, the connection described can be used to form a horizontal, shear-resistant pane that can transfer not only vertical forces but also horizontal forces against walls or columns, for example. Although a pane made up of cross members, drop heads and ceiling formwork panels can thus be built up with practically no lateral play, the support devices of the panels, which can be adjusted at least on one side, make it possible to adjust them after only slightly lifting them to increase the lateral free space and to move the panels downwards to be taken from the disc. The design can preferably take place in such a way that a ceiling formwork panel only needs to be lifted until the channel engagement is removed in order to achieve subsequent adjustability of the support device. In order to facilitate this, the contour of the adjustable support device can be undercut, for example concave, between the side contact element and the engagement element.

The aforementioned problem-free removal of ceiling formwork panels is retained even if their height corresponds approximately to the height of a cross member, the height here being understood as the dimension perpendicular to the formwork plane. This also applies if, as is further preferred, the height of the ceiling formwork panel is approximately the same or even slightly greater than the lowering path of a drop head. The easy removal of the slab formwork panels is therefore retained even with cross members dimensioned for high loads (i.e. also with a large profile height) and, in contrast, to increase work safety, even lower lowering height of the drop heads. Because more free space can be formed by the support that can be pivoted on one side of the ceiling formwork panel, the panels can in principle be shuttered from below and also disconnected again, which also significantly increases work safety. On the other hand, with a ceiling formwork panel, the adjustable support devices of which extend from an axis of rotation perpendicular to the longitudinal direction and plane-parallel, in particular parallel to the formwork plane, in the longitudinal direction beyond the frame and come into support position against an upper, frame-fixed stop under a concrete load, the bearing forces are diverted directly into the frame construction, i.e. they do not lead to overloading of the swivel bearing. Unintentional release of the ceiling formwork panel from the ceiling is also not possible due to corresponding loads, since the drop head must first be lowered by unlocking and the ceiling formwork panel must be raised - even if only slightly. As a result of the variable assignment or connection options between drop heads, main and secondary beams and ceiling formwork panels, a ceiling formwork system that is versatile in terms of the ceiling or formwork contour is given, with a ceiling formwork panel using the support devices in particular optionally on drop heads of supports or Can be supported laterally on main beams. The versatility can be increased even further if main and / or secondary beams and / or ceiling formwork panels are available in graduated lengths or sizes and / or widths. A ceiling formwork panel can preferably have a rectangular or square contour in the formwork plane, the longitudinal direction running in the connecting direction of the spaced-apart frame parts to the support. In particular, it is preferred that the length of the main and / or secondary girders in relation to the width of the slab formwork panel transversely to the longitudinal direction corresponds to an integral multiple and / or that the outer longitudinal distance of the supporting devices on the main and / or secondary girders corresponds to the outer longitudinal distance of the supporting devices of the Ceiling formwork panels.

It is also preferred that the surface of the slab formwork panel or the surface of the formwork facing on the upper side thereof in the formwork position of the drop heads (ie in the upper position) lies in one plane with the surface of the formwork skin or formwork arranged on the transverse girders on the upper side. On the upper side of the ceiling formwork panels, the formwork skin can be attached to the frame, preferably non-detachably, for example by screws, so that the panels can be removed after concreting with the formwork skin remaining on the frame and reused several times. With regard to the crossbeams, there is the possibility that they either also have a prefabricated formwork skin or that they are provided with additional formwork (before or after the panels are installed). The latter can, for example, be attached to a wooden core in a manner known per se with nails. The formwork for the cross members can be adapted to the formwork skin of the panels, also taking into account the rest of the design, in such a way that a flat surface is created that is continuous on the top. In the area of the drop heads, this can be closed by top plates running at a corresponding height. In particular, it is preferred that the ceiling formwork panel has a total height of 110 mm and the lowering path of the drop heads is 100 mm. For this purpose, the ceiling formwork panel can preferably consist of a frame with a height of 100 mm and a formwork skin with a thickness of 10 mm put together. The panel frame itself can in turn be formed from aluminum or an aluminum alloy, more preferably as a welded construction from corresponding profiles, in order to achieve a low dead weight. The formwork skin of an individual panel in the formwork plane can preferably have dimensions of 150-200 cm in the longitudinal direction, more preferably 170 mm, and in the transverse direction of 40-50 cm, more preferably 44 cm, and in the longitudinal and / or transverse direction over the frame survive. In the case of a high load-bearing capacity, these measures ensure that a weight that can be easily handled by a single operator is maintained even with the size ratios mentioned.

The system ceiling formwork according to the invention can, with regard to a ceiling formwork panel with a support device having a hooking strip, which can be integrated therein, preferably provide that the longitudinal groove of the hooking strip in cross section is connected to a form-fitting engagement of a hooking web of a drop head and / or a Hooking a cross member is adapted therein. This form fit can be achieved by two opposite one another in the longitudinal groove, i. H. Stop surfaces acting in opposite directions arise, the shape of which in the longitudinal groove cross-section, d. H. For example, the distance from one another, dimensions and course such as, for example, inclination, can be adapted to the shape of the associated hooking elements of cross members and / or drop heads. Nevertheless, it is expedient if the width of the longitudinal groove leaves a limited lateral play which facilitates the longitudinal groove engagement during assembly. According to another aspect, the inventive ceiling formwork system can have fitting strips for shuttering the upper side of transverse girders and in particular drop heads, the width of the fitting strips roughly corresponding to the distance between the formwork surfaces of two ceiling formwork panels hooked onto a transverse girder opposite one another. With respect to the position of use, the fitting strip can have at least one drip edge running parallel to one of its longitudinal sides, in particular a drip edge formed on a groove embedded in the underside, on the underside. In this context, a symmetrical design is preferred, in which such a drip edge extends parallel and at a small distance from two opposite sides. With regard to the edge spacing or position, it is preferred that when the fitting strip rests on the longitudinal side against a ceiling formwork panel, the facing drip edge lies above the associated sloping surface of the hooking strip in cross section. This has the effect that concrete milk, which can possibly penetrate through the joint between the fitting strip and the ceiling formwork panel, on the drip edges, which are preferably the outer edges of grooves milled into the underside, to drip onto the in Projection underlying inclined surface of the hooking strip is forced and thus cannot run into the support channel of a drop head or cross member bordered by hooking webs or hooking ribs. The support channel is thus protected from soiling, so that a linear support is available every time it is used again, even without laborious cleaning.

A fitting strip has as a plate strip, i. H. Fitting strips, an upper side facing the ceiling to be covered and an underside opposite it, said drip edge running on the underside. The fitting strip can expediently have an upper formwork skin in the installed position made of a comparatively elastic plastic and a lower carrier layer in the installed position made of a comparatively stiffer plastic, in particular made of polypropylene reinforced with glass fibers, wherein the formwork skin can be fastened, in particular vulcanized, to the carrier layer. In the case of such a layer composite made of two differently elastic plastics, it is further preferred that the major part of the fitting strip or the fitting strip consists of the rigid plastic (for example, polypropylene reinforced with glass fibers). Alternatively or in combination, the longitudinal sides of the fitting strip can be designed to be conically tapered in their cross-section starting from the surface of the formwork skin. In the two-layer structure explained, the conical or wedge-shaped edge cross-section can also preferably only be implemented in the area of the upper elastic formwork skin. During shuttering, the fitting strip can be pressed between ceiling shuttering panels already hung opposite one another on a cross member and, in particular with an elastic shuttering skin that is also conical at the edges, provides a good seal against leaking concrete. At the same time, such a configuration also enables certain tolerances of the distance between two ceiling formwork panels lying opposite on a cross member to be compensated, in particular in cooperation with a lateral movement play possible in the longitudinal grooves of hooking strips.

Furthermore, the width of the fitting strip or the fitting strip can preferably also be matched to the design of transverse girders and / or ceiling formwork panels so that it is also attached to a formwork edge along a transverse girder for the flush or even sealing formwork of the side wall to the next ceiling formwork panel button of the remaining space is suitable. In particular, the width of the fitting strip can be comparatively larger than the outer distance of be on a cross member opposing hooking elements, so that the handling of rotatable parts in particular is facilitated by the correspondingly increased wall spacing of the vertical supports on these.

• 1 in Seitenansicht das erfindungsgemäße Deckenschalungs-Paneel in einer bevorzugten Ausführungsform,
• 2 in Draufsicht das erfindungsgemäße Deckenschalungs-Paneel nach 1,
• 3 in Unteransicht das erfindungsgemäße Deckenschalungs-Paneel nach 1,
• 4 eine im Vergleich zu 1 vergrößerte Schnittansicht des erfindungsgemäßen Deckenschalungs-Paneels nach 1 entlang Schnittlinie IV-IV,
• 5 eine im Vergleich zu 1 vergrößerte, nur die Endbereiche zeigende Seitenansicht in Abstützstellung der verstellbaren Abstützeinrichtung,
• 6 eine 5 vergleichbare Darstellung, jedoch in einer Zwischenstellung der verstellbaren Abstützeinrichtung,
• 7 eine den 5, 6 vergleichbare Darstellung, jedoch in einer bevorzugten Handhabungsstellung der verstellbaren Abstützeinrichtung,
• 8 in perspektivischer Darstellung die erfindungsgemäße System-Deckenschalung in bevorzugter Ausführungsform, im Aufbau begriffen,
• 9 perspektivisch einen Fallkopf mit daran abgestütztem Hauptträger (nur Endbereich dargestellt), in jeweils bevorzugter Ausführungsform,
• 10 perspektivisch einen Fallkopf mit daran eingehängtem Nebenträger (nur Endbereich dargestellt), in jeweils bevorzugter Ausführungsform,
• 11 perspektivisch einen Hauptträger mit daran abgestütztem Nebenträger (jeweils nur Endbereich dargestellt), in jeweils bevorzugter Ausführungsform,
• 12 perspektivisch einen Hauptträger mit daran abgestütztem weiterem Hauptträger (jeweils nur Endbereich dargestellt), in bevorzugter Ausführungsform,
• 13 eine Schnittansicht durch Schnittebene XIII-XIII von 8 vor dem Betonieren,
• 14 die in 13 dargestellte Situation, jedoch nach dem Betonieren,
• 15 die in 14 dargestellte Situation, jedoch nach dem Absenken der Fallköpfe,
• 16 die in 15 dargestellte Situation nach dem einseitigen Ausheben des Deckenschalungs-Paneels,
• 17 in Seitenansicht das erfindungsgemäße Deckenschalungs-Paneel in einer weiteren bevorzugten Ausführungsform,
• 18a, b im Vergleich zu 17 vergrößerte, nur einen Endbereich zeigende Seitenansichten in Abstütz- bzw. Handhabungsstellung der verstellbaren Abstützeinrichtung,
• 19 eine Schnittansicht entlang Schnittlinie XIX-XIX in 17,
• 20 eine Draufsicht auf eine Schmalseite des in 18a gezeigten Endes des Deckenschalungs-Paneels,
• 21 eine Seitenansicht zweier nur endseitig dargestellter Deckenschalungs-Paneele, gegenüberliegend abgestützt an einem geschnitten gezeigten Querträger mit Passleiste,
• 22 perspektivisch die erfindungsgemäße System-Deckenschalung in einer weiteren bevorzugten Ausführungsform, ausschnittsweise im Aufbau begriffen,
• 23 eine Schnittansicht durch Schnittebene XXIII-XXIII von 22, jedoch nach dem Betonieren und dem einseitigen Ausheben eines Deckenschalungs-Paneels und
• 24 einen Teilschnitt entlang Schnittlinie XXIV-XXIV in 23.

The present invention is described in more detail below with reference to the accompanying drawings, which show preferred embodiments without restricting the scope of protection. It shows:

• 1 in a side view of the ceiling formwork panel according to the invention in a preferred embodiment,
• 2 in plan view the ceiling formwork panel according to the invention 1 ,
• 3 in a bottom view of the ceiling formwork panel according to the invention 1 ,
• 4th one versus 1 enlarged sectional view of the ceiling formwork panel according to the invention 1 along section line IV-IV,
• 5 one versus 1 enlarged side view showing only the end areas in the support position of the adjustable support device,
• 6th one 5 comparable illustration, but in an intermediate position of the adjustable support device,
• 7th one the 5 , 6th comparable illustration, but in a preferred handling position of the adjustable support device,
• 8th in a perspective view of the system ceiling formwork according to the invention in a preferred embodiment, under construction,
• 9 perspective a drop head with main beam supported on it (only end area shown), in each preferred embodiment,
• 10 perspective a drop head with attached secondary beam (only end area shown), in each preferred embodiment,
• 11 in perspective a main beam with a secondary beam supported on it (only end area shown in each case), in each preferred embodiment,
• 12th in perspective a main beam with another main beam supported on it (only end area shown), in a preferred embodiment,
• 13th a sectional view through section plane XIII-XIII of 8th before concreting,
• 14th in the 13th situation shown, but after concreting,
• 15th in the 14th situation shown, but after lowering the drop heads,
• 16 in the 15th The situation shown after lifting the slab formwork panel on one side,
• 17th in a side view of the ceiling formwork panel according to the invention in a further preferred embodiment,
• 18a, b compared to 17th enlarged side views showing only one end area in the support or handling position of the adjustable support device,
• 19th a sectional view along section line XIX-XIX in 17th ,
• 20th a plan view of a narrow side of the in 18a shown end of the ceiling formwork panel,
• 21 a side view of two ceiling formwork panels shown only at the end, supported opposite one another on a cross member shown in section with a fitting strip,
• 22nd in perspective the system ceiling formwork according to the invention in a further preferred embodiment, extracts in the process of being built,
• 23 a sectional view through section plane XXIII-XXIII of 22nd , but after concreting and lifting a slab formwork panel on one side and
• 24 a partial section along section line XXIV-XXIV in 23 .

1 shows a ceiling formwork panel according to the invention in a side view that is reduced compared to the natural size 1 in a preferred embodiment. This has a frame 2 and on in the longitudinal direction L. opposite sides support devices 3 , 4th on. As a formlining 5 is on the frame 2 A polypropylene plate reinforced with long glass fibers is attached to the top. The support device shown in the left half of the picture 3 is with the frame 2 by means of a weld seam 6th firmly connected. A second corresponding support device 3 is on the frame 2 Appropriately attached behind in the direction of view. The support device shown in the right half of the picture 4th , which are also in pairs on the outside of the frame 2 is provided, has - with likewise plate-like design - one of the support means 3 corresponding, triangular contour, one in each case in an axially symmetrical arrangement Narrow side of the triangle in the longitudinal direction L. about the frame 2 protrudes away. In contrast to the support devices 3 are the supporting devices 4th on the frame 2 held rotatable in the plane of the drawing. The two support devices 4th are with a wave 7th connected, which along an axis of rotation perpendicular to the plane of the drawing 8th about the frame 2 transversely to the longitudinal direction L. protrudes on both sides, with a non-rotatable connection to a support device at each end 4th is provided. In the example chosen, the non-rotatable connection is implemented by a welded connection that is no longer shown in the drawing. As further clearly also in connection with 2 can be seen, are the support devices 3 , 4th in pairs by a welded (but not necessarily present) connecting strut leading to a further reinforcement 9 tied together. It is also clear that the formlining 5 In the example, it is formed from a single plate, that is to say continuous in the longitudinal and transverse directions, and which in the transverse direction Q on both sides over the supporting devices 3 , 4th , ie also via the - in 2 concealed - frame 2 beyond. 3 shows in the opposite direction of view, ie in a view from below, that the frame 2 two spaced apart longitudinal members 10 and has cross members connecting them as a welded construction. How clearly in conjunction with 4th can be seen are as longitudinal beams 10 each provided with a Z-shaped extruded profile in cross section. As a front cross member 11 U-shaped profiles are selected in cross-section, their U-legs in the plane of the drawing 3 point inwards. In between there are a total of five equally spaced plate-like cross members 12th resulting in additional bracing of the frame 2 to lead. It is also shown that in the area of two cross members 12th one handle carrier each 13th on both sides of the side members 10 is welded, each handle bracket 13th one in 3 upwards (ie downwards in the position of use) facing handle 14th holds. In the example, this is a U-shaped tube, both ends of which are attached to the handle support 13th are welded on. Such a bow handle is also on the shaft 7th as a handle 15th present to by rotating the shaft 7th a synchronous rotation of the support devices in accordance with the position 4th to effect. The wave 7th is to shaft journals at both ends 16 which are deposited into the side members when there is just enough freedom of movement 10 drilled holes 17th step through and with the supporting devices 4th through welds 18th are connected. From the side members 10 and front cross members 11 a surrounding frame is formed by the welded joints. The side members have 10 outer flanges 19th and the cross members 11 inner flanges 20th (U-legs) with respective holes through which screws from below 21 , in the example chosen, hexagon socket screws, into the top-side formlining 5 are screwed in. In the exemplary embodiment, the formwork skin is a solid polypropylene plate reinforced with long glass fibers, which in actual size has a thickness of 10 mm and which, at comparatively low costs, has a long service life, also due to only low water absorption, and a is highly insensitive to nails or screws. The formlining, which is well suited for concrete, can be placed on its surface 5 have a non-slip surface or coating, so that it can be walked on in a non-slip manner before concreting. As in 3 is further shown, point in the longitudinal direction L. symmetrical to the center of the slab formwork panel 1 Carrying handles arranged on the underside 14th a distance G which is substantially the distance H between the handle 15th and the handle facing you, ie the right-hand handle 14th is equivalent to. This is a particularly ergonomically favorable arrangement for automatically holding the ceiling formwork panel correctly 1 The shuttering is easy by placing the ceiling shuttering panel 1 first with both hands on the handles 14th pry up and then hook it into a main girder and / or drop head of a slab formwork scaffolding on one side for the time being. In a preferred procedure, the adjustable support devices are initially used 4th opposite end of the slab formwork panel hooked. With the corresponding one-sided hooking, one hand is free to reach around the handle 15th . Then the ceiling formwork panel 1 preferably on the handle 15th and the closest handle to you 14th be lifted at the second end. When shuttering from below, the adjustable support devices can be used 4th by means of the handle 15th in a lengthways direction L. Adjust the position in which the ceiling formwork panel 1 also raised at its second end to a height sufficient for hooking and then by adjusting the handle 15th can be hooked into the support position on the formwork scaffolding. After concreting, the formwork can be removed or the ceiling formwork panel can be removed 1 after lowering the drop heads in the reverse order of the steps described.

5 shows in an opposite 1 enlarged side view of the longitudinal ends of the ceiling formwork panel according to the invention 1 . The adjustable support devices shown in the right half of the picture 4th are in a so-called support position, which is used to support the ceiling formwork panel 1 on cross members and / or drop heads of a ceiling formwork scaffolding is preferred. The plate-like support devices, which are essentially triangular in their outer contour 4th step into it with their upper front edge 21 in abutment against the flange 19th (see. 4th ) of the frame 2 so that from the position shown there is no turning around the axis of rotation 8th counterclockwise is possible. The support devices that are not adjustable in the example shown 3 and the adjustable support devices 4th each have engaging elements formed in one piece on the underside 22nd for positive engagement in in 5 not shown grooves of a ceiling formwork framework as well as side contact elements formed as lateral projections 23 for lateral contact with cross girders and / or drop heads of the slab formwork scaffolding. In the supporting position shown, the external longitudinal distance A has mutually opposite engagement elements which are assigned to one another in the longitudinal direction 22nd and side contact elements 23 with regard to the possible position adjustment range of the adjustable support devices 4th a maximum value. This is because it relates to the axis of rotation 8th the side contact elements 23 on about the same and the engaging elements 22nd are at a lower height and a rotation of the support devices 4th is only possible clockwise. The shown external longitudinal distance A of the support devices 3 , 4th corresponds in the selected embodiment at the same time to the total length of the ceiling formwork panel 1 longitudinal L. . The investment areas 24 the engaging elements 22nd and the investment areas 25th of the side contact elements 23 lie in pairs in contact levels perpendicular to the formwork level.

6th also shows the longitudinal ends in side view, with the adjustable support devices 4th starting from 5 have been rotated clockwise to an intermediate position by an angle α, in the example shown by 15 °. The longitudinal distance A is the difference a compared to in 5 Outside longitudinal distance A shown is reduced. In order to have as large a free space as possible in the longitudinal direction for assembly / disassembly of the ceiling formwork panel L. to create, the two overlapping adjustable support devices in the viewing direction can 4th up to the in 7th The so-called handling position shown, in which the outer longitudinal distance A is significantly reduced by the difference b compared to the original outer longitudinal distance. The handling position, in which practically no further reduction of the outer longitudinal distance A is possible, is automatically set with a corresponding rotation, in that a rear end edge 26th from below in stop against the flange 19th of the side member 10 occurs, the handle 15th remains in a convenient rotation position.

8th shows the system ceiling formwork according to the invention in perspective 27 in a preferred embodiment. This is supported downwards on a concrete floor that has already been created 28 and laterally against a concrete wall that has already been created, in the example around a corner 29 away. The system slab formwork 27 has telescopic vertical supports 30th , each with a drop head on the top 31 wear, and cross members 32 on which on the drop heads 31 on those in the 9 and 10 The manner shown can be supported. The system slab formwork 27 further comprises a plurality of ceiling formwork panels 1 according to the present invention, the example chosen being the preferred embodiment described above. 8th FIG. 13 shows a state in the construction of a ceiling formwork scaffolding in which vertical supports are inserted 30th and cross members 32 Formwork scaffolding already formed a plurality of ceiling formwork panels 1 is hooked. In formwork areas where the formwork length of the cross member 22nd an integral multiple (in the selected example four times) the width of the slab formwork panels 1 can be supported by four vertical supports each 30th Frame segments supported on the corner by a corresponding number of ceiling formwork panels 1 close completely. With an odd length ratio of the cross member z. B. for the formwork of irregular ceiling shapes, there is, as in 8th shown in the right front formwork area, the possibility of after inserting panels 1 remaining area with cross members 32 (preferably secondary beam 35 ) to be filled in appropriately. In the example chosen, the cross members close when the concrete is ready to be poured 32 and the frame 2 the ceiling formwork panels 1 flush at the top so that the formlining 5 the ceiling formwork panels 1 initially protrudes upwards by its thickness, in this case 10 mm. To fill the formwork level at the right level, after the ceiling formwork panels have been suspended 1 on the cross members used for support and filling 32 a so-called cladding on top 33 fastened with nails made of wood or, for example, such as the formwork skin 5 - Can be made of polypropylene. In the case described, the formwork 33 the same thickness as the formlining 5 on. In other cases, in which the top of the crossbeams, for example, runs a little deeper than the top of the frame of the panels, the formwork can be correspondingly thicker than the formwork facing to compensate for the level, for example a thickness of 20 - 21 mm, which is common in Germany for wooden formwork, or an in USA standard thickness of 19 mm (3/4 "Finnply).

the 9 and 10 show that with the system slab formwork according to the invention on drop heads 31 as a cross member 32 basically optional so-called main girders 34 and secondary beams 35 can be supported (with the cross members 32 only one end section is shown in the drawing). In a manner known per se, they have in common that the main and secondary beams 34 , 35 on the underside of the frontal projections 36 have to reach over hook bars 37 the drop heads 31 that are attached to the vertical supports by means of the holes 38 guided Screws (not shown) are to be attached. With the hooking bars 37 it is an upwardly angled, lateral extension of a support plate 39 that on the drop head 31 - in a manner also known per se - on a vertical sleeve 40 movable, that is, for example, can be lowered from an upper formwork or concreting position by the so-called lowering path of the drop heads. In the upper support position shown, the support plate 39 of one on the vertical sleeve 40 rotatable drop ring 41 with four circumferential cams 42 held. In the upper position shown, ie in the formwork position, the lower edge of the drop ring is supported 41 on the underside on two support pins 43 from that on the vertical sleeve 40 are fastened protruding diametrically. For lowering the support plate 39 lets the fall ring 41 Twist a little sideways so that the circumferential cams 42 by means of grooves open radially inward therein 50 and the support plate 39 by means of radially inner (partially covered) grooves 44 down on the support pins 43 can pass past, so that also here supported cross members 32 with be lowered. The vertical sleeve 40 is on the underside with a base plate 45 and on top with the head plate 46 connected, the latter still causing a point support of the concrete ceiling even when the support plate is lowered, while the crossbeams 32 and the ceiling formwork panels according to the invention 1 are already removable. In the example shown, the upper or formwork surface of the top plate rises accordingly 46 by a measure above the cross member 32 in addition, that of the thickness of a shuttering 33 (not shown) corresponds, for example, with nails to the wooden core inserted into the aluminum extrusion profile 47 is to be attached. On the other hand, there would also expediently be the possibility of a termination of the top plate that is flush with the cross members at the top, so that the formwork can then also run continuously over a top plate. Main carrier 34 and secondary beams 35 differ in that the main support 34 Hooking ribs protruding upwards and running in the longitudinal direction on both sides 48 having. If the main carrier 34 , as in 9 shown on one of the four hooking bars 37 is hooked is a longitudinally aligned arrangement of the adjacent hooking webs 37 with hooking ribs on the same side 48 given, so that a quasi-continuous hooking channel is created on both sides. Like the hooking bars 37 can consequently also the hooking ribs 48 the main carrier 34 for hooking in main and secondary beams 34 , 35 Find use, as also in the 11 and 12th is shown in the drawing. Also the ceiling formwork panels according to the invention 1 can with their support devices 3 , 4th in principle optionally both on hooking bars 37 as well as hooking ribs 48 be hooked for support. At the in 8th The embodiment shown are the ceiling formwork panels 1 on the main girders running across them 34 hooked. The secondary beams 35 run to the ceiling formwork panels 1 parallel and serve to hold the formwork scaffolding before the ceiling formwork panels are hung 1 to stabilize in the lateral direction or to fill in remaining areas. After the ceiling formwork panels have hooked 1 on the main beams 34 with at the same time lateral support at the upper and lower contact areas, a shear-resistant disc is formed which, as planned, carries horizontal loads against the concrete walls 29 (or e.g. against pillars). It is also shown that on main and secondary beams 34 , 35 that are already on both sides of ceiling formwork panels 1 are surrounded, a formwork on the top 33 that is attached to the formwork facing 5 the ceiling formwork panels 1 and the top of the head plates 46 forms the form surface.

13th shows a longitudinal section along section plane XIII-XIII 8th , in which in the middle one on both sides by means of main girders 34 on drop heads 31 supported ceiling formwork panel according to the invention 1 is shown. Opposite to 8th is 13th In addition, another suspended ceiling formwork panel was added to the left of the picture. With the support plates held in the upper position 39 (hidden) this relates to the state that is set immediately before concreting. In contrast, shows 14th a later state in which the concrete ceiling to be created 49 is already applied. After lowering the drop heads starting from this, or more precisely after lowering their support plates, the in 15th given situation. With the support plates, which are also covered here 39 are the main girders hooked into it 34 and the ceiling formwork panels hooked into it 1 lowered by the lowering path W of the drop heads (ie the support plates), which in the example chosen is even slightly smaller than the height D of the ceiling formwork panel 1 is. While the shuttering 33 first of all on the concrete ceiling 49 remains (and can be removed from there later), the formlining remains 5 with the ceiling formwork panel 1 firmly connected if reusable. Around the ceiling formwork panel shown in the center of the picture 1 even with the comparatively small lowering path W, it only needs to be raised until the engaging elements on the underside 22nd the adjustable support devices 4th the one from the hooking crib 48 formed channel upwards, so that it goes into the in 7th Handling position shown can be rotated. With the so in the longitudinal direction L. formed free space can be the ceiling formwork panel 1 , as in 16 shown, first pivoted down with the corresponding free end and then completely triggered by lifting the opposite end.

17th shows a ceiling formwork panel according to the invention in a side view 51 in a further preferred embodiment. the 18a , 18b show this enlarged the right end area, where 18a the pivotable support device there 54 in the so-called support position and 18b in the so-called handling position. Furthermore shows 19th a sectional view along section line XIX-XIX to 17th , and 20th relates to a plan view in the direction of view XX 18a . In these figures, as also in the following, components that are the same as those in the previous illustrations are designated with corresponding reference symbols. The ceiling formwork panel shown 51 points at his in the direction of view of 17th left end one rigid to the frame 2 connected support device 53 and at the right end in the viewing direction one on a shaft 7th around an axis of rotation 8th relative to the frame 2 pivotable support device 54 on. Both support devices 53 , 54 each have a hook bar 52 on, which is parallel to the face cross member closest to it 11 Over practically the entire length of the corresponding narrow side of the ceiling formwork panel 51 extends away. The hooking bar 52 has a regarding the in the 17th , 18a Shown so-called support position downwardly open longitudinal groove 55 on, the one for gripping, for example. A hooking web shown in the other figures 37 and / or a hook-in crib 48 suitable is. In the support position on the top side, the hooking strip 52 one to the frame 2 sloping sloping surface 56 on. Along this is the hooking strip 52 in the area of their two longitudinal ends each by a weld 57 with a holding element 58 connected, the one to the inclined surface in the example shown 56 having complementary contour section. Concerning the support device 54 are the two holding elements in pairs 58 with one hole each on one in the frame 2 rotatable shaft 7th pushed on and with this through a weld seam 77 tied together. The hooking bar 52 is thereby on the frame 2 around the axis of rotation 8th held pivotable. With the non-swiveling support device 53 are the two holding elements 58 by means of welds 6th on the frame 2 rigidly set. The largest possible longitudinal distance A in the in 18a shown support position reached in which on the support device 54 the upper front edge 21 the holding elements 58 from below in a rotationally positive stop against the upper flange 19th of the side member 10 occurs. In contrast, a significantly reduced external longitudinal distance A of the ceiling formwork panel 51 is used in the in 18b Reached so-called handling position shown, in which the holding elements 58 starting from 18a have been rotated clockwise by an angle β of 50 ° in the example, and with a corresponding rotation by a rotationally positive stop of the rear end edge 26th of the holding element 58 against the flange 19th is obtained. A spring element is also shown 59 , by the spring force of which the position-adjustable support device 54 is held in said support position and the support device against the torsion spring action 54 can be brought into the handling position. In the example chosen, it is used as a spring element 59 a so-called leg spring is provided, the first leg of which 60 from below against the formlining 5 and its second leg 61 on the shaft 7th , especially on the handle 15th , are supported under spring action. The second leg 61 is for this purpose in an end area around the handle 15th sinuous. That between the two protruding legs 60 , 61 Spring torque acting around the central axis of the cylindrically wound central spring part causes the support device to rotate independently until the support position stops.

21 shows in a side view end sections of two opposite one another on a main beam 34 as a cross member 32 supported ceiling formwork panels 51 . In the example chosen is on the main beam 34 the slab formwork panel on the left in the viewing direction with a pivotable support device 54 and the right ceiling formwork panel by means of a rigid support device 53 supported. Through the hooking strips 52 , their respective longitudinal groove 55 an assigned hooking crib 48 of the main bearer 34 encompasses, is also without lateral contact of the holding element 58 on a longitudinal wall 62 of the main bearer 34 a double-sided form fit in the longitudinal direction L. achieved. The hooking strip is supported in the vertical direction 52 through a first, the longitudinal groove 55 edging profile protrusion 63 comes about, its compared to a parallel second, the frame 2 closer profile projection 64 longer and thicker, at the end rounded cross-section on the bottom 65 the gutter 66 and at the hooking crib that overhangs it 48 is supported. It can be seen that in the selected example there is one in the longitudinal groove 55 remaining lateral play of movement in each case to the profile projection 64 is left facing. At the same time, in the exemplary embodiment shown, there is also, but not necessarily, a lateral spacing between a respective longitudinal wall 62 of the cross member 34 and the holding element assigned to it in each case 58 . This spacing is so large that the position of the ceiling formwork panels 51 on the cross member 34 in the direction perpendicular to the plane of the drawing, regardless of, in the example, from the longitudinal wall 62 protruding welds 76 chosen and a ceiling formwork panel 51 also after hanging in the cross member 34 can be moved freely. If on the other hand on the longitudinal wall 62 no surveys 76 are present (or such do not interfere), however, a different shape of the holding elements can also be used 58 and, if necessary, the hooking bar 52 with lateral contact against the Longitudinal wall offer advantages with regard to the additional support effect.

Next shows 21 a fitting strip 67 according to a preferred embodiment. The fitting strip shown in cross section in the illustration 67 with their longitudinal direction perpendicular to the plane of the drawing 21 extends, has a two-layer structure of a carrier layer with an overall strip-like shape 68 Made of polypropylene reinforced with glass fiber and a formwork skin vulcanized onto it 69 made of more elastic plastic. Here are the long sides 70 the fitting strip 67 in the cross section shown, starting from the formwork skin, tapers conically to the underside. With the fitting strips 67 there is also the possibility that the formlining 69 on the carrier layer 68 is not vulcanized, but is nailed or screwed onto it, for example. It becomes clear that the fitting ledge 67 after supporting the two ceiling formwork panels 51 on the cross member 34 In the gap remaining between their formwork surfaces, due to the resiliently conical edges, could still be used if the distribution of the lateral play in the longitudinal grooves deviates from the one shown 55 would be given. In the selected example, the fitting strip is in the vertical direction on the upper end faces of the longitudinal walls 62 of the main bearer 34 , as well as on the holding elements 58 on there of shoulders 71 recessed support surfaces on the top 72 supported. There remains one of a crossbar 73 and the longitudinal walls 62 of the main bearer 34 edged, upwardly open cavity of the cross member 34 unfilled, while this can otherwise also serve to hold a wooden core, for example, for nailing an additional shuttering. The fitting strip 67 is in the selected example without separate attachment in the manner described, so that length sections that also cross a drop head, after concreting and lowering of the drop heads serve to support the concrete ceiling, while on the other hand, fitting strips only run in the spaces between vertical supports 67 can then already be removed for another use.

In 21 is also shown that the fitting bar 67 Underside, two milled grooves symmetrically in cross-section 74 has, the outer opening edge of which, that is to say facing a ceiling formwork profile, has a drip edge 75 forms. The parallel drip edges 75 are located at the longitudinal side contact of the fitting strip shown 67 against the ceiling formwork panels 51 in cross section above the inclined surface 56 the respective hooking bar 52 . This causes that possibly between the formlining 5 and the fitting strip 67 Penetrating liquid at the drip edge 75 due to the cross-section that rises inwards again to drip onto the inclined surface 56 forced and from there without contamination of the gutter 66 from the main bearer 34 is derived.

22nd shows the system ceiling formwork according to the invention in a perspective section 78 in a further preferred embodiment, under construction. Notwithstanding that with reference to 8th The system slab formwork described in 22nd Embodiment shown for the creation of a supporting frame as a cross member 32 initially only the main support 34 that on the drop heads 31 the required vertical supports 30th can only be hung in one spatial direction, ie not orthogonally, with vertical supports for this 30th in the orthogonal direction of the formwork plane with diagonal struts 79 are supported against each other. As a result of the flush alignment of hooking bars 37 and hooking ribs 48 can those already with reference to the 17th until 21 ceiling formwork panels described 51 in the longitudinal direction of the main beam 34 , especially about drop heads 31 can be freely positioned and moved away. With the construction of the shoring, diagonally braced vertical supports were erected 30th at a sufficient distance from the left rear side wall for the movement of your operating elements 29 began. Then were in the drop heads 31 each perpendicular to said wall 29 oriented main beam 34 hooked and its second end with the next vertical support 30th raised. The support structure obtained in this way can then be shuttered starting from the rear wall corner in the viewing direction. For this purpose, slab formwork panels are first hung in the shoring 51 flush against the rear left side wall 29 pushed. The aforementioned limited wall clearance of the vertical supports, which is advantageous for handling 30th is achieved by a suitable lateral overhang of the edge-side ceiling formwork panels 51 bridged (cf. 24 ). Further ceiling formwork panels are then placed in the supporting structure 51 hooked in and attached to the side against existing panels. If, as in 22nd further indicated, the extension of the formwork surface in the longitudinal direction of the main beam 34 does not correspond to an integer multiple of the panel width, a needs-based connection can be made, for example, by a suitable number of in the main girders 34 transversely suspended secondary beams 35 take place. To the above of main girders 34 To close remaining formwork gaps, fitting strips according to the invention can be used here 67 can be used in the manner previously described. The distance to the wall of the vertical supports closest to the right rear side wall is also 30th chosen so that the formwork space remaining there between the ceiling formwork panels 51 and the said side wall 29 with appropriate fitting strips 67 is to be closed, if necessary by pressing in with limited edge deformation.

A sectional view through the in 22nd Section plane XXIII-XXIII shown is in 23 indicated, but this already shows a later state of the system slab formwork. This also includes the left side of the ceiling formwork panel shown in the center to enlarge the formwork area 51 another (in 22nd not yet available) ceiling formwork panel attached, furthermore after the concrete ceiling has already been produced 49 the support plates of the drop heads 31 with the main girders 34 and the ceiling formwork panels 51 lowered and the middle slab formwork panel 51 at its right end after lifting and turning the support device slightly 54 Swiveled down into the handling position for removal. Here you can see that above the head plates 46 running fitting strips 67 continue to contribute to the support even in this state. The length and position of the fitting strips can also be selected so that, next to or between those fitting strip sections that continue to be supported, there are also fitting strips that can be removed for other use after lowering the support plates without overlapping with drop heads. 24 shows in a partial section along section line XXIV-XXIV 23 the side-by-side juxtaposition of ceiling formwork panels 51 , whereby here especially the lateral overhang of the ceiling formwork panels 51 on the left edge of the formwork in the viewing direction. In the above-described embodiment of the ceiling formwork panels 51 are the hooking strips 52 made of extruded aluminum profile. By their longitudinal extension up to the associated holding elements 58 the connecting weld seam can lie on the side facing away from its linear support, so that the result is an even distribution of the load.

Claims (34)

Ceiling formwork panel (1) which has a frame (2) and support devices (3, 4) on opposite sides in the longitudinal direction (L), by means of which the ceiling formwork panel (1) can be supported, it being provided that from in the longitudinal direction (L) opposing support devices (3, 4) at least on one side of the ceiling formwork panel (1) the respective support device (4) there is held adjustable on the frame (2) so that the external longitudinal distance (A) between the longitudinally ( L) opposite support devices (3, 4) is variable, with at least one support device (4) being attached to the frame (2) so as to be pivotable about an axis of rotation (8) of each of the mutually opposite support devices (3, 4) , characterized in that on one side of the ceiling formwork panel (1) provided support devices (4) for synchronous position-appropriate adjustment with a common shaft (7) verbu which is held on the frame (2) so as to be rotatable about the axis of rotation (8). Ceiling formwork panel (51) which has a frame (2) and support devices (53, 54) on opposite sides in the longitudinal direction (L), by means of which the ceiling formwork panel (51) can be supported, it being provided that from in the longitudinal direction (L) opposing support devices (53, 54) at least on one side of the ceiling formwork panel (51) the respective support device (54) there is held adjustable in position on the frame (2), so that the external longitudinal distance (A) between the longitudinally ( L) opposite support devices (53, 54) is variable, with a support device (54) held in a position-adjustable manner on the frame (2) and having a hooking strip (52) which extends at least substantially along a transverse to the longitudinal direction (L) of the ceiling formwork panel (51) extending side length of the ceiling formwork panel (51), characterized in that the hooking strip (52) at both ends with one Ha lteelement (58) is held on the frame (2), the two holding elements (58) for pivoting the hooking strip (52) are connected to a common shaft (7) which has a handle (15) and which is attached to the frame (2 ) is held rotatably about an axis of rotation (8). Ceiling formwork panel (1, 51) according to one of the Claims 1 , 2 , characterized in that the ceiling formwork panel (1, 51) can be supported by means of the support devices (3, 4, 53, 54) on spaced cross members (32) and / or drop heads (31) of vertical supports (30) of a ceiling formwork frame . Ceiling formwork panel (1, 51) according to one of the preceding claims, characterized in that the axis of rotation (8) is aligned perpendicular and / or plane-parallel to the longitudinal direction (L) of the ceiling formwork panel (1, 51). Ceiling formwork panel (1, 51) according to one of the preceding claims, characterized in that the position-adjustable support device (4, 54) comes into a first stop against the frame (2) in a support position. Ceiling formwork panel (1, 51) according to one of the preceding claims, characterized in that in the support position the external longitudinal distance (A) of support elements lying opposite in the longitudinal direction (L) has a maximum value with respect to the position adjustment range. Ceiling formwork panel (1, 51) according to one of the preceding claims, characterized in that the position-adjustable support device (4, 54) comes into a second stop against the frame (2) in a handling position. Ceiling formwork panel (1, 51) according to one of the preceding claims, characterized in that, in the support position, the greatest external longitudinal distance (A) of support devices (3, 4, 53, 54) opposite in the longitudinal direction (L) of the total length of the ceiling formwork panel ( 1, 51) in the longitudinal direction (L). Ceiling formwork panel (1, 51) according to one of the preceding claims, characterized in that the frame (2) has two longitudinal members (10) running in the longitudinal direction (L) and connected by cross members (11, 12) and that on the shaft ( 7) a handle (15) is attached between the longitudinal members (10). Slab formwork panel (51) Claim 2 or so far at least Claim 2 referred back to one of the Claims 3 until 9 , characterized in that a continuous longitudinal groove (55) is made in the hooking strip (52) for hooking into at least one hooking element of a system ceiling formwork. Slab formwork panel (51) Claim 2 or so far at least Claim 2 referred back to one of the Claims 3 until 10 , characterized in that a holding element (58) in a support position in which the external longitudinal distance (A) of support elements opposite in the longitudinal direction (L) has a maximum value, and / or in a handling position with a reduced external longitudinal distance (A) in abutment against the Frame (2) occurs. Slab formwork panel (51) Claim 2 or so far at least Claim 2 referred back to one of the Claims 3 until 11 , characterized in that a spring element (59) is provided, the spring force of which holds the support device (54) adjustable in position on the frame (2) in the support position. Slab formwork panel (51) Claim 2 or so far at least Claim 2 referred back to one of the Claims 3 until 12th , characterized in that a formwork skin (5) is provided on the upper side of the ceiling formwork panel (1). Ceiling formwork panel (51) according to the Claims 12 and 13th , characterized in that a leg spring is provided as the spring element (59), the first leg (60) of which is supported from below against the formwork skin (5) and the second leg (61) of which is supported on the shaft (7) under the action of a spring. Slab formwork panel (51) Claim 10 , characterized in that the longitudinal groove (55) of the hooking strip (52) is open at the bottom in the installed position. Ceiling formwork panel (51) according to one of the Claims 10 , 15th , characterized in that the hooking strip (52) in the installed position forms an inclined surface (56) sloping towards the frame (2) on the upper side. Ceiling formwork panel (51) according to one of the preceding Claims 13 , 14th , characterized in that the formwork skin (5) protrudes laterally over the support devices (53, 54). Ceiling formwork panel (51) according to one of the preceding Claims 13 , 14th , 17th , characterized in that the formwork skin (5) is formed from polypropylene plate, in particular from polypropylene plate reinforced with long glass fibers. Slab formwork panel (51) Claim 2 or so far at least Claim 2 referred back to one of the Claims 3 until 18th , characterized in that two carrying handles (14) are arranged symmetrically to the center of gravity of the ceiling formwork panel (1) at a distance from one another in the longitudinal direction (L) on the underside. Slab formwork panel (51) Claim 19 , characterized in that in the longitudinal direction (L) the distance (G) between the two carrying handles (14) corresponds approximately to the distance (H) between the handle (15) of the shaft (7) and the carrying handle (14) closest to it. System slab formwork (27, 78), comprising vertical supports (30) which carry a drop head (31) on the top, and cross members (32) which can be supported on the drop heads (31), as well as ceiling formwork panels (1, 51), which can be fastened to spaced-apart cross members (32) and / or drop heads (31), characterized in that at least one ceiling formwork panel (1, 51) according to one or more of the preceding claims is provided. System slab formwork (27, 78) Claim 21 , characterized in that main girders (34) and / or secondary girders (35), which can each be optionally supported on drop heads (31) and laterally on other main girders (34), are provided as transverse girders (32), and that the upper side of the main girders ( 34) and the secondary beam (35) lies in the formwork position in a common plane. System ceiling formwork (27, 78) according to one of the Claims 21 , 22nd , characterized in that the height of the ceiling formwork panel (1, 51) corresponds at least approximately to the height of a cross member (32). System ceiling formwork (27, 78) according to one of the Claims 21 until 23 , characterized in that the height (D) of the ceiling formwork panel (1, 51) is approximately equal to or slightly greater than the lowering path (W) of a drop head (31). System ceiling formwork (27, 78) according to one of the Claims 21 until 24 , characterized in that the ceiling formwork panel (1, 51) can be supported by means of the support devices (3, 4, 53, 54) optionally on drop heads (31) of vertical supports (30) and / or laterally on main girders (34). System ceiling formwork (27, 78) according to one of the Claims 21 until 25th , characterized in that the length of the main and / or secondary girders in relation to the width of the ceiling formwork panel (1, 51) transversely to the longitudinal direction (L) corresponds to an integral multiple. System ceiling formwork (27, 78) according to one of the Claims 21 until 26th , characterized in that the surface of the ceiling formwork panel (1, 51) in an upper formwork position of the drop heads (31) lies in a common plane with the surface of the formwork (33) arranged on the upper side of the cross members (32). System ceiling formwork (27, 78) according to one of the Claims 21 until 27 , characterized in that the ceiling formwork panel (1, 51) has a height (D) of 110 mm and the lowering path (W) of the drop heads (31) is 100 mm. System ceiling formwork (78) according to one of the Claims 21 to characterized in that the longitudinal groove (55) of the hooking strip (52) in cross-section on a hooking web (37) of a drop head (31) and / or a hooking rib ( 48) a cross member (32) is adapted therein. System ceiling formwork (78) according to one of the Claims 21 until 28 as far as at least Claim 10 referred back, characterized in that fitting strips (67) are provided for shuttering the upper side of transverse girders (32) and in particular of drop heads (31), the width of the fitting strips (67) being approximately the distance between the formwork surfaces of two on a transverse girder (32) oppositely hooked ceiling formwork panels (51) corresponds. System ceiling formwork (78) Claim 30 , characterized in that the fitting strip (67) on the underside has at least one drip edge (75) running parallel to a longitudinal side, in particular a drip edge (75) formed on a groove (74). System ceiling formwork (78) Claim 31 and after Claim 16 , characterized in that when the fitting strip (67) rests on the longitudinal side against a ceiling formwork panel (51), the facing drip edge (75) is arranged in cross section above the associated sloping surface (56) of the hooking strip (52) on the top. System ceiling formwork (78) Claim 30 , characterized in that the fitting strip (67) has an upper formwork skin (69) made of an elastic plastic in the installed position and a lower carrier layer (68) made of a stiffer plastic, in particular made of polypropylene reinforced with glass fibers, in the installed position, the formwork skin (69 ) is attached, in particular vulcanized, to the carrier layer (68). System ceiling formwork (78) according to one of the Claims 30 , 33 , characterized in that the longitudinal sides (70) of the fitting strip (67) are conically tapered in their cross-section from the formwork skin to the bottom.

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