Ceiling table for concrete ceiling formwork

Abstract

The invention relates to a ceiling table (1) for concrete ceiling formwork with two foldable ceiling table wings (2, 3) and with a support device (4) which supports the ceiling table wings (2, 3) in a pivotable manner such that they can be displaced between a pivoted-up functional position, in which they form the ceiling table (1), and a pivoted-down transport position in which they are arranged next to each other in an upright orientation. According to the invention, a synchronising device (6) is provided which holds the two ceiling table wings (2, 3) during their pivoting movements and in their respective positions in symmetrical orientation in relation to the support device (4) and to one another.

Description

[0001] Slab table for concrete slab formwork

[0002] The invention relates to a slab table for concrete slab formwork with two foldable slab table wings and with a support device which pivotally mounts the slab table wings in such a way that they can be adjusted between a pivoted-up functional position in which they form the slab table and a pivoted-down transport position in which they are arranged next to one another in an upright orientation.

[0003] A generic slab table is known from DE 4422 753 A1. Two foldable slab table wings are pivotally mounted on a support device. Each slab table wing can be manually folded in and out. Each slab table wing is provided with a diagonal support device with a joint mechanism that holds the upwardly folded slab table wing in the desired position. To prevent accidental folding and to ensure easy handling, the joint mechanism includes a manually reversible self-locking device. This means that when the respective slab table wing is pivoted into its horizontal position, the joint mechanism automatically engages, and folding the slab table wing is only possible after manual unlocking.However, when one of the slab table wings is folded up, the support mechanism is loaded unilaterally by the weight of this pivoting slab table wing, so that with heavy slab table wings, the resulting tilting moment can cause the slab table and the support mechanism to tip over. The object of the invention is to create a slab table mentioned above that is improved in terms of its application.

[0004] The object is achieved according to the invention in a ceiling table mentioned at the outset in that a synchronizing device is provided which holds the two ceiling table wings in symmetrical alignment with respect to the support device and to one another during their pivoting movements and in their respective positions.

[0005] Advantageous embodiments of the invention are specified in the dependent claims.

[0006] The slab table according to the invention is characterized in that the weight of the two slab table wings is evenly distributed over the support device due to the constant synchronous coupling of the two slab table wings for a synchronous position and movement during pivoting. This prevents the support device from being loaded by a tipping moment of one of the pivoting slab table wings if - as in the slab table of DE 44 22 753 A1 - only one of the two slab table wings is pivoted up while the other slab table wing is still in the pivoted-down transport position, or if only one of the two slab table wings arranged in the functional position is pivoted down while the other slab table wing still remains in its pivoted-up functional position.

[0007] This allows the two slab table wings to be pivoted, for example, by manually pivoting one of the two slab table wings, while the other slab table wing moves synchronously due to the coupling. Such a slab table is essentially part of a formwork support structure or represents such a formwork support structure.

[0008] Such a slab table has compact dimensions and a narrow width in the transport position with the two folded-down slab table wings in the folding direction and is therefore relatively transportable with a transport and lifting device. With this transport and lifting device, it can be used on construction sites even in confined spaces and, for example, can be brought out of a room through a wall opening provided for a door after the concrete ceiling of the room has been created and lifting the transport and lifting device out with a crane or similar, similar to inserting it with a crane before creating the concrete ceiling, is therefore no longer possible. The slab table can be used at its location without great effort when erecting concrete slab formwork by pivoting out its two slab table wings. Once it has been set up and pivoted out, the slab table is supported on the ground via the support device.

[0009] The transport and lifting device expediently contains a movable base unit and a lifting device which is arranged on the base unit and which supports the slab table in a vertically adjustable manner. The lifting device has a coupling device for, in particular, releasably receiving the support device of the slab table on the lifting device. The coupling device is designed such that it releasably receives the support device such that, for example, when adjusting the slab table vertically, the support device can be repeatedly detached from the coupling device on the lifting truck and, after adjusting the length to a changed height position of the slab table, can be reattached to the lifting truck or the coupling device. On the other hand, the coupling device can also be designed such that the support device is firmly received on the lifting truck via the coupling device and attached, for example, by means of a screw connection.

[0010] The synchronization device can couple the two slab table wings, for example, using a mechanical device, an electrical device, or even a hydraulic device. A mechanical device can, for example, comprise two intermeshing gear segments arranged on the two slab table wings for mutual engagement. Two such units, each consisting of two intermeshing gear segments, can also be provided, arranged parallel to each other and pivotable about the same pivot axis.

[0011] According to a preferred embodiment, the slab table has a pivoting device that at least supports or entirely effects the joint, synchronous pivoting of the two slab table wings about their respective pivot axes from their lowered transport position to their raised functional position. Such a pivoting device supports the manual pivoting of the two slab table wings and thus facilitates the use of the slab table by reducing the required force or enabling largely or entirely effortless operation for an operator. Such a pivoting device can support the pivoting, for example, mechanically, in particular by means of a spring device, or also by means of a hydraulic device.

[0012] The pivoting device expediently contains at least one gas spring. In particular, at least one such gas spring can be provided for each slab table leaf. This gas spring is supported on the support device and pivots the slab table leaf toward its functional or support position. The gas spring is expediently adjustable for different spring forces, so that it can be adapted, for example, to slab table leaves of different weights.

[0013] Furthermore, it is particularly preferred that a pivoting actuating device is provided with which the pivoting out and in of the slab table wings can be controlled in cooperation with the pivoting device. With this pivoting actuating device, an operator can pivot the two slab table wings. With this pivoting actuating device, intermediate pivoting positions can also be easily adjusted. The pivoting actuating device contains, for example, a crank drive with a winding shaft and a belt that can be wound onto it, or alternatively with a plastic cable, a steel cable, or a comparable tensile-resistant and windable element. According to a preferred embodiment, the two slab table wings are pivotally mounted on a head region of the support device about mutually parallel pivot axes and, in the pivoted-down transport position, are arranged opposite each other on either side of the support device.

[0014] The support device preferably includes two vertical supports or support columns that are spaced apart from one another in the direction of the pivot axes of the two slab table wings and arranged parallel to one another. Each support column has a support head with two pivot bearings that form the two parallel and spaced-apart pivot axes of the two slab table wings. The two support columns provide floor support for the slab table when arranged in its functional position.

[0015] The synchronization device advantageously contains at least one unit consisting of two intermeshing toothed segments. Each of the two toothed segments is connected in a rotationally fixed manner to one of the two slab table wings and can be pivoted with the slab table wing about the respective pivot axis. The two intermeshing toothed segments hold the two slab table wings in their mutually synchronized positions. Such a unit consisting of two intermeshing toothed segments requires few components and only a small installation space, and is highly reliable even in a construction site environment.

[0016] Furthermore, according to a preferred embodiment, each slab table wing has two spaced-apart longitudinal beams. Each longitudinal beam is pivotally mounted on the respective support head via the associated pivot bearing and extends radially from the pivot axis. The two longitudinal beams are connected to each other in a rotationally fixed manner via a connecting axis, which is, for example, rod-shaped or tubular. Preferably, a toothed segment of the synchronization device is fixedly attached to each longitudinal beam.

[0017] A stop that determines the horizontal positions of the two slab table wings is advantageously formed by the two opposing longitudinal beams abutting against each other at their facing ends when the two slab table wings pivot upwards into their functional position. However, other stop components or support components can also be provided, which are advantageously arranged on the longitudinal beams and supported by the support columns.

[0018] According to a preferred embodiment, a base unit is provided on which the support device supporting the slab table wings is received and supported at the floor. The base unit serves for transporting and setting up the slab table in the intended position. After setting up the slab table, the base unit can be removed from the slab table or from the support device and used with the transport and lifting device to transport another slab table.

[0019] The base unit conveniently includes a vertical adjustment device for the lifting mechanism, to which the support device is attached and with which the support device can be adjusted vertically. The vertical adjustment device serves, for example, to lift a slab table placed on the ground in transport position when it is to be transported to its place of use using the base unit. The vertical adjustment device also serves to lift the slab table with the slab table wings swung out into its position for the construction of a concrete slab formwork.

[0020] According to a preferred embodiment, the base unit contains a base plate or a base support, to which two uprights projecting vertically upwards from the base plate or the base support are spaced from one another and fixedly attached in association with the two support columns. Preferably, a lifting carriage is mounted vertically displaceably on each upright. The lifting carriage has a holder for receiving the associated support column. Each lifting carriage is vertically adjustable by means of a spindle arranged parallel to the upright. Each spindle is rotatably mounted on the base plate or the base support and can be rotated by a drive device. The base unit has a plurality of support parts, support units or feet by means of which it is supported on the floor. Alternatively, the base unit can also be supported by a plurality of rollers so that the base unit can be moved by an operator.The feet, as well as the casters or wheels, can be attached to the base plate or to a frame of the base unit to which the base plate is attached, as well as to the base support. The spindle can be rotatably mounted on the base plate or base support itself, or via an intermediary tube or rod that is rotatably mounted on the base plate or base support.

[0021] The base unit is conveniently supported by four wheels. The four wheels are mounted on bearing supports in the base plate. Alternatively, two of the four wheels are attached to each of the two uprights using a wheel bracket. In particular, the wheels are vertically adjustable via the wheel brackets. This allows the wheels to be raised relative to the base unit once the slab table has been moved to its location. The base unit is then supported on the ground via feet or outriggers attached to the base unit. The wheels have no contact with the ground and cannot be damaged by loads applied to the slab table by formwork and concrete.

[0022] Preferably, the two spindles are operated jointly and synchronously by the drive unit. This ensures uniform raising and lowering of both lift trucks. Furthermore, operation is simplified, as both lift trucks are adjusted with a single adjustment control.

[0023] The drive device expediently contains a drive means such as a rotating toothed belt or a rotating chain. The drive means preferably couples the two spindles to one another below the base plate or the base support, so that the base plate or the base support offers a certain degree of protection for the drive means against damage and contamination from above. The drive device preferably contains a drive wheel or a drive pinion for a belt, a toothed belt, or a chain. The drive wheel or the drive pinion is rotatably mounted on the base plate or the base support and can be driven from the top of the base plate or the base support. An operator can actuate the drive wheel or drive pinion, for example, using an electrical hand tool such as a cordless screwdriver.

[0024] A preferred embodiment provides for the support of each lifting carriage to have two bearing arms that protrude laterally from the lifting carriage and are arranged vertically one above the other. These arms support the support column by means of two associated support members that are firmly attached to the support column at a vertical distance from the bearing arms. The support members are, in particular, commercially available construction props, tubular steel props, or formwork or slab props with attached rosettes as support members.

[0025] According to a further preferred embodiment, the support arms are pivotally mounted on the lifting carriage and can be pivoted from a storage position supporting the support column into an assembly position. The pivoting of the support arms occurs in particular from the support column's support parts, while the lifting carriage executes a downward movement relative to the stationary support column. This allows the lifting carriage to engage the lower support parts of the support column and repeatedly raise the support column by the lifting travel of the lifting carriage. In this way, the support column is repeatedly raised in steps.

[0026] The two slab table wings are expediently secured against pivoting in their lowered transport positions by means of a locking device. This prevents the two slab table wings from pivoting out automatically and unintentionally, particularly during transport. The locking device is provided, for example, on the base unit, on the floor slab, or on the support device or support columns. The locking device can be activated in conjunction with the pallet truck adjustment or it can be an independent process. Each slab table wing preferably contains cross beams that are placed on or attached to the longitudinal beams, or are inserted between the longitudinal beams and secured to them. Formwork panels are fixedly arranged or slidably mounted on the cross beams.At least one cross member can be permanently attached to the longitudinal members so that it pivots with the longitudinal members when the slab table wing pivots. Alternatively, at least one cross member can be attached or secured to the longitudinal members only after the slab table wing has pivoted open.

[0027] The slab table wings are conveniently supported in their raised functional positions by additional, length-adjustable vertical supports. These additional vertical supports, in addition to the support provided by the support structure or its two support columns, provide secure support for the slab table. The additional vertical supports can be braced between each other or with the two support columns of the support structure using struts or bracing frames.

[0028] Preferably, at least one of the longitudinal beams contains an extension element or beam extension that selectively extends the longitudinal beam. The extension element or beam extension is expediently mounted on the longitudinal beam in a telescopically extendable manner. The extension element or beam extension is, for example, a profile bar or the like that is slidably received on or in the longitudinal beam and can expediently be fixed to the longitudinal beam in at least one extended position.

[0029] The two ceiling table wings are made of steel, for example, and are preferably made primarily of light metal or wood to reduce their weight for transport and the force required for pivoting.

[0030] An arrangement with at least two slab tables or formwork support structures is characterized in that, during an assembly phase, the at least two slab tables or formwork support structures are positioned next to one another in functional positions by means of the transport and lifting devices. They are supported on the ground by vertical supports provided by the transport and lifting devices. During an operational phase, in which a concrete slab formwork is used to produce a concrete slab, the slab tables or formwork support structures are expediently decoupled from the respective transport and lifting device. The respective transport and lifting device is removable and ready for reuse.

[0031] A method for providing and erecting a slab table for the production of a concrete slab formwork by means of a transport and lifting device comprises the following steps:

[0032] Providing the transport and lifting device with the slab table and with the components supplementing the slab table, in particular with vertical supports and cross beams of the slab table,

[0033] Transporting the transport and lifting device to its place of use in a building, e.g. using tools such as a forklift truck, a crane or wheels, setting up the slab table in its functional position using the assigned lifting movements of the lifting device, and

[0034] Removing the components from a holding device arranged on the transport and lifting device and adding these components to the ceiling table for its functional position.

[0035] Furthermore, the following steps are appropriately carried out: Uncoupling the transport and lifting device from the ceiling table in its functional position, and

[0036] Removing the transport and lifting device from the site of use or from the erected ceiling table.

[0037] This method advantageously provides for the transport and lifting device, after it has been removed from the site of use or from the erected slab table, to be equipped with another slab table and associated components for reuse. This method allows the slab table to be prepared and set up for the production of a concrete slab formwork.

[0038] In the following, exemplary embodiments of a ceiling table according to the invention are explained in more detail with reference to the drawing. It shows:

[0039] Fig. 1 shows an isometric view of a transport and lifting device according to the invention with a formwork support structure in the form of a slab table which has two slab table wings folded up in the functional position;

[0040] Fig. 2 shows an isometric view of the ceiling table in a further embodiment with the ceiling table wings folded down in the rest or transport position;

[0041] Fig. 3 in an isometric view the ceiling table with the two ceiling table wings in an intermediate position when unfolding from the transport position;

[0042] Fig. 4 is an isometric view of the ceiling table with the ceiling table wings swung out further compared to the position in Fig. 3;

[0043] Fig. 5 shows an isometric view of a section of the ceiling table arranged in the functional position with a synchronizing device that couples the ceiling table wings;

[0044] Fig. 6 shows an isometric view of the synchronising device with the ceiling table wings folded down into an intermediate position;

[0045] Fig. 7 shows an isometric view of a vertical support or supporting column of a support device carrying the slab table wings;

[0046] Fig. 8 shows an isometric view of a support head of the support column; Fig. 9 shows an isometric view of a pivot bearing of the slab table wings on the support head of the support column;

[0047] Fig. 10 in a further isometric view the pivot bearing of the ceiling table wings and the synchronization device;

[0048] Fig. 11 shows an isometric view of a base unit of the transport and lifting device with two stands provided for supporting the carrying device;

[0049] Fig. 12 is an isometric view in an enlarged detail of a lifting truck mounted on the stand with a bearing arm;

[0050] Fig. 13 in an isometric view an underside of the base unit with a drive device for adjusting the lifting carriage;

[0051] Fig. 14 is an enlarged isometric view of the underside of the base unit with the drive device;

[0052] Fig. 15 in an isometric view and in a partially sectioned representation of the base unit;

[0053] Fig. 16 is an isometric view in an enlarged representation of a section of the base unit shown in Fig. 15 with a spindle and its bearing;

[0054] Fig. 17 is an isometric view of the lifting truck mounted on the stand, partially in section;

[0055] Fig. 18 shows an enlarged isometric view of a sectioned portion of the lifting carriage with the support arm; Fig. 19 shows an isometric view of the slab table arranged in the functional position with an additional vertical support on one slab table wing;

[0056] Fig. 20 in an isometric view the ceiling table with the ceiling table wings arranged in the functional position in a first lower position;

[0057] Fig. 21 is an isometric view of the ceiling table in a second position raised relative to the base unit;

[0058] Fig. 22 is an isometric view of the ceiling table in a third position raised further compared to Fig. 21;

[0059] Fig. 23 in an isometric view the base plate of the base unit with a locking device for locking the ceiling table wing arranged in the transport position;

[0060] Fig. 24 in an isometric view the base plate with the locking device in a locked position of the ceiling table wing;

[0061] Fig. 25 shows an isometric view of another embodiment of a locking device;

[0062] Fig. 26 shows an isometric view of the transport and lifting device in a transport position placed on the ground;

[0063] Fig. 27 shows a further isometric view of the transport and lifting device in a transport position placed on the ground;

[0064] Fig. 28 shows an isometric view of the transport and lifting device of Fig. 1 with formwork panels; Fig. 29 shows an isometric view of an arrangement of six slab tables with their respective transport and lifting devices with the slab table wings unfolded in two spaced-apart rows;

[0065] Fig. 30 shows an isometric view of the arrangement of Fig. 29 with additional vertical supports;

[0066] Fig. 31 shows an isometric view of the arrangement of Fig. 30 with additional cross members;

[0067] Fig. 32 shows an isometric view of a component holder for components of the formwork support structure or the slab table;

[0068] Fig. 33 in an isometric view the formwork support structure or the slab table with additional support extension on longitudinal beams of the formwork support structure;

[0069] Fig. 34 is an isometric view of a stand of the base unit with a further embodiment of a coupling device which holds a support column of the support device coupled to the lifting carriage;

[0070] Fig. 35 is an isometric view showing an enlarged section of Fig. 34;

[0071] Fig. 36 in an isometric view according to Fig. 34 the support column in the uncoupled position on the lifting truck;

[0072] Fig. 37 is an isometric view showing an enlarged section of Fig. 36;

[0073] Fig. 38 shows an isometric view of another embodiment of the transport and lifting device with components mounted thereon; Fig. 39 shows an isometric view of the opposite side of the transport and lifting device shown in Fig. 38;

[0074] Fig. 40 shows an isometric view of the transport and lifting device shown in Fig. 38 with an embodiment of the holding device for components;

[0075] Fig. 41 is an isometric view in an enlarged representation of a lower component holder of the holding device for components shown in Fig. 40;

[0076] Fig. 42 shows a further illustration of the lower component holder in an isometric view;

[0077] Fig. 43 in an isometric view an upper component holder of the holding device for components;

[0078] Fig. 44 in an isometric view in an enlarged representation of a locking device of the upper component holder;

[0079] Fig. 45 in a further isometric view in an enlarged representation of the locking device of the upper component holder;

[0080] Fig. 46 is an isometric view of the transport and lifting device shown in Fig. 38 with the ceiling table wings swung up;

[0081] Fig. 47 is an isometric view in an enlarged representation of the support column fixed to the lifting truck;

[0082] Fig. 48 shows a further enlarged isometric view of the support column fixed to the lifting carriage; Fig. 49 shows an isometric view of the transport and lifting device with the raised slab table wings and supporting vertical supports; and

[0083] Fig. 50 shows an isometric view of the transport and lifting device shown in Fig. 49 with the slab table wings swung up and a formwork support structure supplemented with additional components.

[0084] A transport and lifting device 100 according to the invention (Fig. 1 ) is designed to transport a formwork support structure 101 for concrete slab formwork to its respective location, to position it at the required height and, in the process, to carry and provide the necessary components of the formwork support structure 101. According to a first embodiment, the formwork support structure 101 comprises a slab table 1 with two slab table wings 2 and 3, which are pivotally mounted on a support device 4 by means of a respective pivot bearing device 5 (Fig. 4). The two slab table wings 2 and 3 are, in their raised functional position (Fig. 1 ), arranged together in a planar arrangement and in a usually horizontal orientation next to one another to provide formwork, and in their transport position (see Fig.2, which shows a modified embodiment of the formwork support structure), also referred to as the rest position, is arranged in an upright orientation on both sides of the support device 4. By means of the pivot bearing device 5 (Figs. 4 and 5), the two slab table wings 2 and 3 can be pivoted or folded out from the transport position (Fig. 2) into the functional position and pivoted or folded back from the functional position into the transport position. Figs. 3 and 4 show intermediate positions of the two slab table wings 2 and 3 during pivoting.

[0085] The slab table 1 has a synchronizing device 6 (Fig. 5) that maintains the two slab table wings 2, 3 symmetrically aligned with respect to the support device 4 and to each other during their pivoting movements and in their respective positions. The synchronizing device 6 contains, for example, two pairs of two meshing toothed segments 7 and 8. Each of the two toothed segments 7 and 8 is rotationally connected to one of the two slab table wings 2 and 3 and pivots with the slab table wings 2, 3 about a respective pivot axis 9 and 10 (Fig. 7) of the pivot bearing device 5 pivotally supporting the slab table wings 2 and 3.

[0086] The support device 4 has two vertical supports or support columns 11 and 12, which are spaced apart from one another and arranged parallel to one another on a base unit 13 of the transport and lifting device 100. Thus, the base unit 13 supports the support device 4 at the floor level. The mutually parallel pivot axes 9, 10 of the two slab table wings 2, 3 are arranged on a head region 14 of the support device 4 and in particular on a head plate 15 of a support head 16 of each support column 11, 12 (Figs. 7 and 8).

[0087] The slab table 1 has a pivoting device 17 (Fig. 1 ) which at least supports or entirely effects the joint pivoting of the slab table wings 2, 3 from their downwardly pivoted transport position into their upwardly pivoted functional position. The pivoting device 17 contains, for example, two gas pressure springs 18 and 19 for each slab table wing 2, 3. Two gas pressure springs 18 and 19 are pivotally connected opposite one another to one of the two support columns 11, 12, one gas pressure spring 18 being pivotally connected to one slab table wing 2 and the other gas pressure spring 19 being pivotally connected to the other slab table wing 3.

[0088] The base unit 13 has a base plate 20 which is supported on a floor or, in general, on a substructure by means of a plurality of support units, support plates and / or feet 21. Alternatively or in addition to the feet 21, rollers or wheels 102 can also be attached so that the base unit 13 can be pushed or rolled on the floor into a desired position. On the upper side 22 of the base plate 20 (Fig. 11), two uprights 23 and 24 are fixedly attached in a vertical orientation and in association with the two support columns 11 and 12. A lifting carriage 25 (Fig. 11) of a lifting device 103 is mounted on each upright 23, 24 for vertical displacement. A spindle 26 is in adjustment engagement with each lifting carriage 25.The spindles 26, which are rotatably mounted on the base plate 20, position the two lifting carriages 25 at the desired height above the base plate 20 and are thus parts of an adjustment device 27 of the lifting device 103 for the height-adjustable support of the support device 4 and thus of the formwork support structure 101 or the two slab table wings 2, 3.

[0089] The lifting device 103 has a coupling device 104 (Fig. 11) for releasably receiving the support device 4. The coupling device 104 contains a holder 28 arranged on the respective lifting carriage 25, which supports the associated support column 11 or 12. The holder 28 of each lifting carriage 25 contains two bearing arms 29 and 30, which protrude laterally from the lifting carriage 25 and are arranged vertically one above the other. Each support column 11, 12 contains at least two support parts 31 and 32 (Fig. 7), in particular rosettes, which are assigned to the two bearing arms 29 or 30 and are firmly attached to the support column 11, 12 at the vertical distance of the bearing arms 29, 30. The two support parts 31 and 32 are received or placed on the two bearing arms 29, 30 and thus hold and support the respective support column 11, 12.The two support columns 11, 12 are positioned on the base unit 13 in such a way that they are arranged laterally next to the base plate 20 when they are supported on the floor or subsurface.

[0090] The base unit 13 has a drive device 33 (Fig. 13) that rotates the two spindles 26 jointly and synchronously by means of a drive means 34. The drive means 34 is arranged on the underside 35 of the base plate 20 and is, for example, a rotating toothed belt 36 or a rotating chain. Each spindle 26 or a tube 26' (Fig. 15) supporting the spindle 26 has, at its lower end, a roller, a gear, or a pinion 37, depending on the type of drive means, which is located on the underside 35 of the base plate 20.

[0091] The drive means 34 or the toothed belt 36 wraps around the two pinions 37 as well as a tension pulley 38 and a drive pinion 39. The tension pulley 38 is preferably arranged between the pinions 37 of the two spindles 26 and is rotatably mounted on an axle 40 which is received in an elongated hole 41 in the base plate 20 and positioned such that the drive means 34 or the toothed belt 36 is guided with sufficient tension. The drive pinion 39 is fixedly connected to a pinion shaft 42 and rotatably mounted on the base plate 20 by a pinion bearing 43. The pinion shaft 42 has a rotary engagement part 44 at its upper end, on which a tool for rotating the pinion shaft 42 and thus the drive pinion 39 can be engaged. The rotary engagement part 44 is e.g. B. a hexagon screw head and can be operated by a hand tool or power tool such as a cordless screwdriver.

[0092] Each slab table wing 2 and 3 has two longitudinal beams 45 (Fig. 4), which are spaced apart from one another and aligned parallel to one another and are firmly connected to one another at their inner ends 46 adjacent to the pivot bearing device 5 via a connecting axis 47 (Fig. 5), which is formed, for example, by a torsion tube. The two longitudinal beams 45, which extend approximately radially from the connecting axis 47, are connected to one another via a plurality of cross struts or cross beams 48. The cross beams 48 are spaced apart from one another and arranged at right angles to the longitudinal beams 45 and are attached to the upper sides of the longitudinal beams 45 (see Fig. 2) or inserted between the two longitudinal beams 45 (see Fig. 1).At least one cross member 48 is expediently permanently attached to each slab table wing 2, 3, which is pivoted with the slab table wing 2, 3, while the remaining cross members 48 are attached to the longitudinal members 45 only after the slab table wings 2, 3 have been pivoted open. In an alternative design, the slab table wings 2, 3 only have the longitudinal members 45 (Figs. 26 and 27 as well as 38 and 39). The cross members 48 are, if necessary, attached to the longitudinal members 45 during erection of the formwork support structure 101 and, if necessary, fastened to them.

[0093] Each longitudinal beam 45 is preferably composed of two support profiles 49 and 50 (Figs. 5 and 9). A pivot bearing 51 of the pivot bearing device 5 contains, for each support profile 49, 50, a bearing bush 52 and 53 defining the respective pivot axis 9, 10 (Fig. 8). The two bearing bushes 52 and 53 are arranged coaxially to one another and spaced apart from one another on the head plate 15 of the support head 16. A bearing axis 54 is fixedly attached to each support profile 49, 50, which is rotatably received in the associated bearing bush 52 or 53 and is also coaxial with the pivot axis of the toothed segment 7 or 8.

[0094] Each stand 23, 24 (Figs. 12, 17 and 18) is formed in the form of a preferably rectangular hollow profile, which is composed, for example, of two profiles with a U-shaped cross-section. The lifting carriage 25 is also formed as a hollow profile with a rectangular cross-section fitted into the stand 23, 24 and is slidably mounted in the hollow profile of the stand 23, 24 by means of four sliding pieces 55, made, for example, of PTFE, which are attached to the four outer corners 56 of the lifting carriage 25, respectively at the upper end and at the lower end of the lifting carriage 25. A nut 57 assigned to the spindle 26 is fixed in the hollow profile of the stand 23, 24 in a rotationally fixed and axial position, so that the spindle 26 screwed into the nut 57 raises or lowers the lifting carriage 25 by rotation, depending on the direction of rotation. The nut 57 is, for example, B. in a nut holder 58, which is fixed in the lifting carriage 25, axially and rotationally fixed.

[0095] The lifting carriage 25 has a bearing arm holder 59 assigned to each of the two bearing arms 29, 30 (Figs. 17 and 18), which is formed, for example, in a plate-shaped manner and is fastened to a side wall 60 of the lifting carriage 25. The two bearing arm holders 59, which are vertically spaced from one another on the lifting carriage 25, extend through a longitudinal slot 61 in the upright 23, 24 and protrude laterally from the upright 23, 24. Each bearing arm 29, 30 is pivotally mounted on its bearing arm holder 59 about a pivot axis 63 formed by a bearing pin 62. The bearing arm 29, 30 is composed, for example, of two, for example, plate-shaped bearing arm parts 64, which are arranged on both sides of the bearing arm holder 59, are connected to one another by means of a connecting pin 65, and are connected to one another at their outer ends by means of an engagement unit 66. Each bearing arm 29, 30 is in the position shown in Fig.12, by the connecting bolt 65 resting against an end face 67 of the bearing arm holder 59. The bearing arm 29, 30 can be pivoted upwards from this support position by a deflection actuation and pivots downwards again into its support position due to its weight when the deflection actuation is terminated. Each support part 31, 32 or each rosette of the support column 11, 12 (Fig. 8) has a plurality of openings 68 arranged distributed over its circumference. The engagement unit 66 of the bearing arm 29, 30 has an arcuate base plate 69 to which a central screw bolt 70 and two bolts 71 projecting upwards on either side thereof are firmly attached in association with the openings 68 of the support part 31, 32. The support column 11, 12 is mounted on the lifting carriage 25 in such a way that the respective support part 31, 32 orthe rosette rests on the associated bearing arm 29, 30 and the screw bolt 70 and the two bolts 71, which engage in the openings 68, securely hold the support part 31, 32 and thus the support column 11, 12.

[0096] Furthermore, a locking device 72 is provided (Figs. 23 and 24), which secures the two slab table wings 2, 3 against pivoting in their swung-down transport positions. The locking device 72 contains two locking pieces 73 (Fig. 11) for each slab table wing 2, 3, which are fastened to the base plate 20 and each have a slot-shaped locking receptacle 74, for example, which contains a lower lateral entry opening 75 for a bolt-shaped locking bolt 76 of the slab table wing 2, 3 and extends vertically upwards. When the slab table wing 2, 3 swings down into its transport position, the locking bolt 76 enters the locking receptacle 74 (Fig. 23). The lifting carriage 25 then lifts the ceiling table wing 2, 3 until the latch 76 is located at the upper end of the latch holder 74 and is thus prevented from swinging out sideways (Fig. 24).

[0097] For use in the manufacture of concrete slab formwork, the slab table 1 is brought into its transport position (Figs. 2, 26 and 27), in which it has a maximum width of, for example, approximately 80 cm or approximately 90 cm, depending on the design, by means of the transport and lifting device 100, for example, into a room of a building to be erected. To do this, a transport device such as a forklift truck reaches under the base plate 20 of the base unit 13 and slightly lifts the slab table 1 via the base unit 13. The carrying grip can be made on both the wide side of the base plate 20 and the narrow side. The base plate 20 has a narrow width on its narrow side. Such a narrow width is sufficient to set up the slab table 1 so that it cannot tip over, since the forced synchronous pivoting of the two slab table wings 2 and 3 always ensures a uniform central load on the base unit 13.If the base unit 13 is supported on the floor via rollers or wheels 102, the base unit 13 can also be moved manually with the ceiling table 1.

[0098] The transport and lifting device 100 can also be moved or relocated using a crane or the like, and thus inserted into a room from above before the concrete ceiling is constructed. At least one support means (not shown), such as a crane eye or a suspension loop, is expediently arranged on one or both connecting axes 47 in a central position between the two pivot bearing devices 5. The crane lifts the transport and lifting device 100 by means of a gripper or a rope or the like at the central support means. Thus, tipping of the transport and lifting device 100 is prevented by the central force application.When the transport and lifting device 100 is lifted via the support grip engaging the connecting axes 47, the slab table 1 is firmly connected to the two uprights 23 and 24 via the two support columns 11 and 12, since nuts are screwed onto the screw bolts 70, which firmly connect the support parts 31, 32 of the support columns 11, 12 to the respective lifting carriage 25 via the bearing arms 29, 30. At least one such support means can also be arranged on the base unit 13. Fastening the support columns 11, 12 to the uprights 23, 24 via the screw bolts 70 is then not necessary.

[0099] Once the slab table 1 has been parked at its location, the locking device 72 is actuated to unlock the two slab table wings 2 and 3. To do this, a cordless screwdriver is applied to the rotary engagement part 44, and by rotating the pinion shaft 42 in a first direction of movement, the lifting carriage 25, with the two slab table wings 2 and 3 carried by it, is lowered until each latch 76 of the two downwardly moving slab table wings 2 and 3 is displaced in the latch holder 74 into a lower position in front of the inlet opening 75. Since the two slab table wings 2 and 3 are preloaded in the unfolding direction by the gas pressure springs 18, 19 of the pivoting device 17, they can now pivot open, while each latch 76 exits through its associated inlet opening 75.

[0100] The two slab table wings 2 and 3 now pivot through the intermediate positions shown in Figs. 3 and 4 into the functional position shown in Figs. 1 and 5, in which the raised slab table wings 2 and 3 form the slab table 1 with a flat, horizontal support surface. The synchronization device 6 ensures the uniform pivoting of the two slab table wings 2 and 3.

[0101] The two gas springs 18 and 19 are supported on the respective support column 11, 12 by a clamping bearing 77, which contains two clamping bearing halves fastened to the support column 11, 12 by means of screw connections. The position of the clamping bearing 77 on the support column 11, 12 depends on the gas spring 18, 19 used and its respective spring force, as well as on the position of its opposite support 78 on the longitudinal member 45 (Fig. 9). The support 78 is preferably arranged between the two spaced-apart support profiles 49 and 50 and is provided by means of a bearing axis 79, which pivotally mounts the gas spring 18, 19.

[0102] In order to adjust the slab table 1 to its required height position, the two lifting carriages 25 are raised by means of the adjustment device 27. To do this, the cordless screwdriver rotates the rotary engagement part 44 and thus the pinion shaft 42 in a second opposite direction of rotation so that the spindles 26 lift the two lifting carriages 25. Each lifting carriage 25 carries its support column 11, 12 via the two rosettes or support parts 31 and 32. When the two slab table wings 2 and 3 are arranged in the correct height position (e.g. in a position according to Fig. 21), a spindle base 80 is inserted at the lower end of each support column 11, 12 and adjusted to a height such that the support column 11, 12 is supported on the floor next to the base plate 20. If the spindle base 80 was already attached to the support column 11, 12 before it was raised, e.g. B.In order to support the support columns 11, 12 stored in a warehouse with the slab table wings 2 and 3 pivoted down in the rest or transport position on the ground, a tubular intermediate piece can also be inserted between the spindle base 80 and the support column 11, 12 for height adjustment. Fig. 21 shows a position before inserting an extending intermediate piece for height adjustment.

[0103] The two slab table wings 2 and 3 are supported on the floor via additional vertical supports 81 (Fig. 19). For this purpose, for example, a connecting pipe 82 is attached to each longitudinal beam 45, which is pivotally mounted by means of a bearing axis 83 near the free end 84 of the longitudinal beam 45 between its two support profiles 49 and 50. The vertical support 81 is connected at its upper end to the connecting pipe 82, e.g., by means of a coupling pipe section, or it is inserted into the connecting pipe 82. The additional vertical supports 81 are supported in correct alignment on the floor via adjustable spindle feet 80. In an alternative design, a short connecting pipe is permanently attached to the longitudinal beam 45 and protrudes from it at a right angle. The vertical support 81 is coupled to this short connecting pipe, e.g., inserted or clipped on.

[0104] In order to remove the now no longer required transport and lifting device 100 with its base unit 13 from the slab table 1, the two lifting carriages 25 are first lowered by means of the drive device 33 until the two bolts 71 and the screw bolt 70 of each support arm 29 and 30 emerge downwards from the openings 68 of the associated support parts 31 and 32. This removes the connection between the support columns 11, 12 and the base unit 13 as well as the two uprights 23 and 24. The two uprights 23, 24 are pivoted with their side surfaces forming a rectangle through an angle a (Fig. 15) of e.g. 45° about the axis of rotation of the spindle 26 in such an orientation on the base plate 20 that the support arms 29, 30 of each lifting carriage 25 are at an angle of e.g.45° to the longitudinal edges 85 of the base plate 20 on their broad sides, are each directed outwards towards the corresponding narrow side 86 of the base plate 20 and are thus at an angle of approximately 90° to one another. The base unit 13 is now removed from the support columns 11, 12 by moving or extending the base plate 20 with the uprights 23, 24 in the direction of arrow A (Fig. 21) parallel to the narrow sides 86 of the base plate 20 and perpendicular to the plane defined by the two support columns 11, 12. The angle α can preferably have a size in the range of approximately 20° to 70°. The two uprights 23 and 24 can be supported on the base plate 20 and / or connected to one another via additional bracing.

[0105] The two support columns 11, 12 of the support structure 4 and the additional vertical supports 81 are expediently connected by means of struts, e.g., horizontally and, if necessary, diagonally, so that the slab table 1 is supported reliably and to absorb high loads during the concreting of a concrete slab. Shuttering panels 90 (Fig. 28) for a concrete slab formwork are placed on the longitudinal beams 45 and / or the cross beams 48.

[0106] If a concrete ceiling formwork is to be produced for a high room and the vertical adjustment range of the lifting carriage 25 of the adjustment device 27 is insufficient for the height adjustment of the support device 4, after the above-described initial raising of the two lifting carriages 25 by actuating the drive device 33, the two lifting carriages 25 are lowered into a lower starting position, while the support columns 11, 12 remain supported on the floor via the spindle feet 80. In this case, spindle feet 80 are used which have at least one further support part 32'. The distance between this support part 32' and the lower support part 32 of the support column 11, 12 corresponds to the distance between the two support parts 31 and 32 of the support column 11, 12 and is, for example, 50 cm.

[0107] During the downward movement of the lifting carriage 25, the two bearing arms 29 and 30 strike the respective support part 32 and 32' from above and are pivoted upwards by these parts about the pivot axis 63. In this way, the bearing arms 29, 30 can move downwards past the support parts 32 and 32' and, after passing the support parts 32, 32', pivot automatically back into their horizontal support position. The lifting carriages 25 are moved upwards again by means of the drive device 33, engage the support parts 32, 32', and raise the two support columns 11, 12 again in the manner already described.

[0108] This process can be repeated, using pipe extensions with 32' support pieces or rosettes.

[0109] Fig. 25 shows a modified embodiment of the locking device 72. On each support column 11, 12 there is a latch holder 87 which has two latches 88 for each slab table wing 2, 3. The latches 88 are pivotally mounted and pre-tensioned in the locked position. When the two support profiles 49 and 50 of the longitudinal support 45 are completely lowered into their transport position, the latches 88 snap around the support profiles 49 and 50 and hold them locked. The latch holder 87 has a guide part 89 which engages in the distance between the two support profiles 49 and 50 and holds them centered with respect to the latches 88. To release the lock, the latches 88 are opened manually. Furthermore, a safety device, e.g. B. by inserting a locking pin (not shown) into the latch holder 87, which prevents the latch 88 from opening.

[0110] The transport and lifting device 100 has a holding device 105 (see Figs. 1, 26, 27 and 32) which contains two, in particular, similar component holders 106 for components which, in their operating positions, supplement or complete the formwork support structure 101 in its functional position. Such components are, in particular, the vertical supports 81 and the cross beams 48, but can also be, for example, additional longitudinal beams, extension parts or pipe bases. The components or the vertical supports 81 can be removed from the component holder 106 and, in their operating positions, support the formwork support structure 101 in its functional position on the ground. The components or the cross beams 48 can also be removed from the component holder 106 and, in their operating positions, connect the longitudinal beams 45 of the formwork support structure 101 in its functional position to one another in a transverse alignment.Each component holder 106 is formed as a substantially flat or planar, grid-shaped holding structure 107, which is arranged in a direction parallel to the base plate 20 between the two uprights 23 and 24. The holding structure 107 has two opposing fixing elements 108, which protrude laterally from the holding structure 107 and by means of which the holding structure 107 or the component holder 106 is fastened to the two uprights 23 and 24, e.g. by screwing at prepared fixing positions. The two component holders 106 are arranged congruently one above the other, with the lower component holder 106 being located, for example, approximately 0.2 m to 0.3 m above the base plate 20 and the upper component holder 106 being arranged in an upper region of the two uprights 23 and 24 in such a way that, for example, B. the cross members 48 are held by the upper component holder 106 and can preferably also project upwards beyond the upper component holder 106.

[0111] Each component holder 106 expediently has a central longitudinal flat bar 109 (see Fig. 32) which, in the upright position, extends horizontally and centrally through the component holder 106 and whose two ends form the fixing elements 108. A plurality of transverse flat bars 110 are also arranged in an upright position at right angles to the longitudinal flat bar 109 and protrude from the longitudinal flat bar 109 on both sides. The longitudinal flat bar 109, which is formed in one piece or is composed of several sections, together with the permanently attached transverse flat bars 110 forms a basic structure of the grid-shaped holding structure 107 in the manner of a rake with tines on both sides. The longitudinal flat bar 109 and the transverse flat bars 110 form side walls or holding elements of a respective grid recess, grid opening or grid chamber 111, which are each designed to accommodate one of the components, e.g. B. vertical supports or cross beams, are provided.The transverse flat bars 110 contain slots 112 that extend downward from the upper edge 113 of the respective transverse flat bar 110, e.g., over half the height of the transverse flat bar 110. The slots 112 are formed in the transverse flat bars 110 in at least one row arrangement parallel to the longitudinal flat bar 109. An additional longitudinal flat bar 114, inserted from above into the slots 112 parallel to the central longitudinal flat bar 109, closes the grid chambers formed between the transverse flat bars 110.

[0112] 111 towards the outside of the component holder 106.

[0113] The transverse flat bars 110 expediently have a plurality of slots

[0114] 112 in several parallel row arrangements. This allows grid chambers 111 with different rectangular and square cross-sections to be created by appropriately inserting additional longitudinal flat bars 114.

[0115] On each of the two sides of the central longitudinal flat bar 109, alternately arranged transverse flat bars 110 of different lengths can be arranged. In this case, in a preferred embodiment, the inner additional longitudinal flat bar 114 defines inner grid chambers 111 with a small cross-section. An outer additional longitudinal flat bar 114, together with two longer transverse flat bars 110 and the inner additional longitudinal flat bar 109, defines larger and preferably square outer grid chambers 111 (Fig. 1).

[0116] The outer grid chambers 111 preferably accommodate longer vertical supports 81, which are inserted from the outside into the laterally open outer grid chambers 111 and are secured against falling out by the inserted outer additional longitudinal flat bar 114. The longer vertical supports 81 rest on the base plate 20 and, due to their length, protrude with their upper end, on which a drop head 115 can be arranged, to the side next to the respective connecting axis 47. The inner grid chambers 111 can accommodate shorter components such as the cross beams 48, which, due to their shorter length, can be positioned below the respective connecting axis 47. Of course, the cross beams 48 can also be accommodated in the outer grid chambers 111.

[0117] The additional longitudinal flat bars 114 can have slots which are assigned to the slots 112 of the transverse flat bars 110 and are open downwards in the longitudinal flat bars 114, so that the longitudinal flat bars 114 placed on the transverse flat bars 110 are arranged at approximately the same level as the transverse flat bars 110.

[0118] In an alternative design (not shown), the component holder 106 comprises an annular support to which retaining elements for, for example, a single-row arrangement of grid chambers 111 are attached. A longitudinal flat bar or the like secures the components accommodated therein, such as vertical supports and cross beams. The support comprises connecting elements via which the component holder 106 is attached to the uprights 23, 24.

[0119] The holding device 105 has wheel holders 116, which are formed, for example, as pins 117 that protrude upward from the base plate 20. Each wheel 102 is mounted with its bearing axis on a, for example, cranked tubular piece 118, which is preferably inserted laterally into a bearing receptacle 119 of the base plate 20 when the wheel 102 is arranged in its operating position. In its non-functional rest position, the wheel 102 is plugged onto the pin 117 with the tubular piece 118. The preferably four bearing receptacles 119 are preferably arranged at the four corners of the base plate 20. Each bearing receptacle 119 is expediently formed such that the wheel 102 inserted therein, with its tubular piece 118, protrudes laterally on the longer longitudinal side of the base plate 20 in the width direction (see Fig.1 ) and in an alternative arrangement on the narrower transverse side of the base plate 20 protrudes in the longitudinal direction of the base plate 20, so that in this case the transport and lifting device 100 is not hindered from passing through a narrow wall opening by laterally projecting wheels 102.

[0120] Fig. 29 shows an arrangement of six formwork support structures 101 or slab tables 1, which are arranged with their respective transport and lifting devices 100 with unfolded slab table wings 2, 3 in two spaced-apart rows. Components received on the component holders 106 of the transport and lifting devices 100, such as vertical supports 81 or cross beams 48, are not shown. According to a preferred embodiment, each longitudinal beam 45 of the formwork support structures 101 or slab tables 1 has at least one beam extension 91 (Fig. 33), which is telescopically received on the longitudinal beam 45 and can be extended from a retracted position into an extended position (see Fig. 33). The beam extension 91 is expediently received on the longitudinal beam 45 such that its upper side 92 is flush with the upper side 93 of the longitudinal beam 45.Thus, the longitudinal beams 45 with the beam extensions 91 form a flat support surface for additional cross beams 48. The extended beam extensions 91 can be supported by additional vertical supports 81. The two beam extensions 91 extended from one of the slab table wings 2, 3 can also be connected to each other by means of at least one cross brace 94.

[0121] With the beam extensions 91, gaps between the longitudinal beams 45 of two adjacent formwork support structures 101 or slab tables 1 can be bridged and closed.

[0122] Fig. 30 shows the arrangement of the six formwork support structures 101 or slab tables 1 with additional vertical supports 81, which are arranged at the ends of the longitudinal beams 45 and support them. Two adjacent longitudinal beams 45 of two adjacent slab tables 1 are coupled to each other, for example, by the additional vertical supports 81, in particular via head pieces or drop heads 115 of the vertical supports 81.

[0123] Fig. 31 shows the arrangement of the six formwork support structures 101 or slab tables 1 with additional cross beams 48, which bridge the distance between the two rows of slab tables 1 and are inserted into the longitudinal beams 45. The additional cross beams 48 are taken from the component holders 106 of the transport and lifting devices 100.

[0124] Each transport and lifting device 100 can, after being uncoupled from the support columns 11, 12 of the respective slab table 1, be removed from the erected formwork support structures 101 or slab tables 1. In an alternative embodiment, the locking device 72 contains two opposing locking bushings 120 (see Fig. 1) on each support column 11, 12, into which associated locking pins 121 engage. These locking pins are arranged on the undersides of the longitudinal beams 45 of each slab table wing 2, 3 and which, when the slab table wings 2, 3 are pivoted down in the rest position, engage in the locking bushings 120 and are secured therein against moving out, for example by means of a split pin.

[0125] According to a further embodiment, the coupling device 104 for releasably receiving the support device 4 is modified (see Figs. 34 to 37) in that each of the two bearing arm holders 59 of the lifting carriage 25 has a lower bearing arm 122 and an upper bearing arm 123 arranged above it, which are firmly connected to the bearing arm holder 59 and protrude horizontally from the bearing arm holder 59. Each bearing arm 122 and 123 has an elongated slot-shaped opening 124 and 125, respectively, which extends in the longitudinal direction of the bearing arm holder 59 protruding from the lifting carriage 25. The two openings 124 and 125 are arranged one above the other in such a way that a wedge 126 passing through the two openings 124 and 125 from above is held in a wedged holding position at the lower opening 124. For this purpose, the lower opening 124 has a smaller opening width in its longitudinal direction compared to the upper opening 125.The two support parts 31 and 32 of each support column 11, 12 each have a support plate 127 with a through opening in the form of a longitudinal slot 128. As long as the wedge 126 is in an upper disengaged position (Figs. 37 and 38) or away from the bearing arm holder 59, the support columns 11, 12 are placed with their support plates 127 onto the lower bearing arms 122 of the two lifting carriages 25 and are each positioned in such a position that the longitudinal slot 128 of the support plate 127 is arranged above the opening 124 of the lower bearing arm 122. The wedge 126 is then inserted through the longitudinal slot 128 of the support plate 127 and the opening 124 of the lower bearing arm 122 and is driven into its wedged holding position, e.g., with a hammer blow.In its holding or wedge position, the wedge 126 expediently holds a contact part 129 of the support plate 127 against an end face 130 of the upper support arm 123 and / or against an end face of the lower support arm 122. To release the coupled support column 11, 12, the wedge 126 is released, for example, by an upward blow to its lower end 131 and can be pulled out upwards.

[0126] Conveniently, the wedge 126 includes a thickened portion 132 at its lower end 131, which protrudes in its transverse direction and thus also in the transverse direction of the two openings 124 and 125 as well as the longitudinal slot 128. The thickened portion 132, e.g., a pin penetrating the wedge 126, protrudes from one of the side surfaces 133 of the wedge 126 or from both side surfaces 133. The width of the wedge 126 at its thickening 132 in the transverse direction is greater than the width of the lower opening 124 and greater than the width of the longitudinal slot 128 of the support plate 127, but is smaller than the width of the opening 125 of the upper bearing arm 123. The wedge 126 can thus be pulled upwards from its lower holding or wedge position until the thickening 132 rests against the underside of the upper bearing arm 123 and prevents the wedge 126 from being pulled out completely.The wedge 126 is thus held in its disengaged position on the upper bearing arm 123 and secured against loss by the thickened portion 132. In its disengaged position, the wedge 126 advantageously rests with its lower end 131 in a recess or trough 134 of the bearing arm holder 59.

[0127] According to a modified embodiment, the transport and lifting device 100 (see Figs. 38 to 50) has a pivoting actuating device 135 (Figs. 38 and 46) with which an operator pivots the two slab table wings 2 and 3. In this embodiment, the two slab table wings 2 and 3 do not have crossbeams 48. However, crossbeams 48 can also be provided. The pivoting actuating device 135 contains a crank drive 136 with a winding shaft and a belt strap 137 that can be wound thereon, or alternatively with a plastic cable, a steel cable, or a comparable tensile-resistant and windable element. The crank drive 136 is attached to the support column 11 below the clamping bearing 77 of the two gas pressure springs 18 and 19.The belt strap 137 is fastened by its free end to a belt strap fixing 138 mounted on the longitudinal beam 45, which is arranged at a distance from the pivot axis 9 of the slab table wing 2 and thus of the longitudinal beam 45 that essentially corresponds to the distance of the crank drive 136 from the pivot axis 9. The crank drive 136 is arranged on the support column 11 in such a way that when the slab table wing 2 is pivoted, the belt strap 137 moves in a vertical plane and unwinds from the winding shaft or winds it onto the winding shaft. A hand crank 139 is movable in front of the support column 11 when the crank drive 136 is actuated. In the rest position shown in Fig. 38, the wound-up belt 137 holds the downwardly pivoted longitudinal member 45 in a vertical position in which a support part 140 arranged on the longitudinal member 45 has rested against the support column 11.The gas pressure springs 18 and 19 load the longitudinal beam 45 and the synchronously pivoting longitudinal beam 45 of the second ceiling table wing 3 with a low pivoting force.

[0128] To pivot the slab table wings 2 and 3 into their functional position, the belt 137 is unwound from the winding shaft by means of the crank drive 136. The belt 137 allows the two longitudinal beams 45, which are loaded in the pivoting direction by the increasing force of the gas springs 18 and 19, to pivot out in a controlled manner. The self-locking crank drive 136 allows the slab table wings 2 and 3 to be positioned in any intermediate pivoting position, for example, in an inclined intermediate pivoting position in which an operator inserts a beam extension 91 (Fig. 49) into the longitudinal beam 45 from its free end. The free end of the longitudinal beam 45 is located at a user-friendly lower height above the floor compared to the height when the slab table wings 2, 3 are pivoted out into their functional position.The swinging back of the ceiling table wings 2, 3 from their functional position to their rest position is carried out in a corresponding manner by winding up the belt strap 137.

[0129] Such a support member 140 is expediently attached to each longitudinal member 45 to define the respective rest position of the longitudinal members 45. In principle, the crank drive 136 can also be operated with an attachable electric drive tool or an integrated electric drive instead of the hand crank 139.

[0130] Furthermore, it is advantageous if the transport and lifting device 100, according to one embodiment, has a support means 141 in the form of, for example, a lifting eye on each of the two uprights 23 and 24, in particular at its upper end (see Figs. 38 to 40). The support means 141 or the lifting eye is attached to the uprights 23, 24, for example, by screwing or welding, and projects upwards between the two connecting axes 47. With these two spaced-apart support means 141, safe transport of the transport and lifting device 100 is possible, for example, by means of a crane or other lifting device.

[0131] According to a further embodiment, the transport and lifting device 100 is provided with a modified holding device 105 for components such as the vertical supports 81, the beam extensions 91, and stiffening frames 142 (Fig. 40). A lower component holder 143 of the holding device 105 (Figs. 40 and 41) contains several receiving domes 144 that project vertically upwards and on each of which a tubular vertical support 81 is placed with its open lower end and securely held. The receiving domes 144 are fixed to or in a support structure, which is particularly designed as a lattice structure 145, in a uniform grid or grid pattern. The lattice structure 145 has, for example, holding plates 146 that are welded in vertical alignment to the receiving domes 144 and to an edge frame 147. The vertical supports 81 rest on the upper edges of the retaining plates 146.

[0132] In this embodiment, the base plate 20 is replaced by a base support 148, to which the two uprights 23 and 24 are firmly attached. The base support 148 has a reduced width in the transverse direction compared to the base plate 20. The width corresponds approximately to the width of the uprights 23 and 24 in their arrangement on the base support 148. The grid structure 145 containing the receiving domes 144 is firmly attached to the side next to the base support 148 and is thus in a position as close to the ground as possible. Advantageously, an underside of the grid structure 145 is arranged flush with the underside of the base support 148. In this way, a storage space is provided that is maximized for receiving the vertical supports 81 in the vertical direction. The receiving domes 144 are, for example,arranged in two rows such that vertical supports 81 received on the inner row are positioned with their upper ends directly in front (when viewing the broad side of the transport and lifting device 100) and laterally next to (when viewing the narrow side of the transport and lifting device 100) the connecting axis 47 arranged on this side of the transport and lifting device 100.

[0133] The lower component holder 143 of the holding device 105 contains, on the side of the base support 148 opposite the grid structure 145, another permanently attached grid structure 149 (Fig. 42), which contains, for example, four receiving domes 144 as well as a receiving frame 150, which is fastened, for example, to the upper edges of the holding plates 146. The receiving frame 150 encloses several longitudinal supports 45 and / or support extensions 91 received therein in a vertical orientation, which are arranged with their flat sides next to and against one another and are supported by their lower ends on the grid structure 149. The support extensions 91 are expediently received in the longitudinal supports 45, so that the required storage space is reduced.This additional lattice structure 149 is designed and firmly attached to the base support 148 such that both the vertical supports 81 and the support extensions 91 and the longitudinal supports 45 are positioned in front of or laterally next to the associated connecting axis 47, corresponding to the opposing lattice structure 145. The support structures or lattice structures 145 and 149 are fundamentally designed such that they can accommodate the components required for the transport and lifting device 100, such as vertical supports 81 and support extensions 91, as well as - if necessary - other components, even in a different design.

[0134] An upper side 151 of the base support 148 provides a storage location for additional components, such as the stiffening frames 142, and is thus part of the lower component support 143. An upper component support 152 (Figs. 40 and 43) is designed and arranged such that it holds the components mounted on the lower component support 143 in a location corresponding to that of the upper component support 106 of the first embodiment (see Figs. 1 and 26). The upper component support 152 includes a support structure 153 that is adapted to the design of the lower component support 143 and that is fastened to and between the two uprights 23 and 24 by means of two opposing fixing elements 154. The support structure 153 includes a central rectangular area 155, which is surrounded by support plates and is arranged above the parking space on the upper side 151 of the base support 148.This central area 155 can accommodate several, for example three, vertically arranged stiffening frames 142, which are inserted, for example, from the side below or from above.

[0135] The holding structure 153 of the upper component holder 152 further includes two regions 156 and 157 (Fig. 43), which are opposite one another with respect to the central region 155 and adjoin it. One region 156 is designed to accommodate the vertical supports 81 (in this example, two by five), each of which is mounted in a row on the lattice structure 145. This region 156 contains two lateral holding elements or holding plates 158 and four spacers 159, which are attached to the holding plate 160 delimiting the central region 155 in a parallel and evenly spaced orientation and form receiving spaces 161 for two vertical supports 81 that can be inserted one behind the other. A locking device 162 secures the vertical supports 81 against inadvertently falling out of the receiving spaces 161.The locking device 162 contains several adjustable locking elements 163 that can be adjusted between a closed position and an open position. Such a locking element 163 is adjustably mounted on the first spacer 159 next to the lateral retaining plate 158. The spacer 159 is formed as a tube into which a cylindrical bearing body 164 (see Fig. 45) is inserted, to which the flat locking element 163 is firmly connected. The tube contains an annular, slot-shaped recess 165 in which an engagement part 166, e.g., a pin or a screw, connected to the bearing body 164 is guided. The recess 165 extends over an angle of approximately 90° and has a recess 167 at one end. A helical spring 168 is inserted into the tube and arranged between a tube sheet formed by the retaining plate 160 and the bearing body 164 and loads the bearing body 164 outwardly in the axial direction.The engaging part 166 holds the bearing body.

[0136] 164 in the axial direction, while the latter can perform a rotational movement in the tube through this angle of approximately 90°. The engagement part 166 is arranged in such a position on the circumference of the bearing body 164 in association with the closing element 163 that in one rotational end position, in which the engagement part 166 rests against one end of the recess 165 in the depression 167, the closing element 163 is arranged in a horizontal closed position secured by the helical spring 168, and that in the other rotational end position, in which the engagement part 166 rests against the other end of the recess

[0137] 165, the closing element 163 is arranged in a vertically open position. The closing element 163 is connected at its center to the bearing body 164 and is sized such that, in the closed position, it closes the two adjacent receiving spaces 161 on either side.

[0138] Such a locking element 163 is adjustably mounted in the same design on the spacer 159 next to the opposite lateral retaining plate 158. A third central locking element 163 is arranged on the central spacer 159. It differs from the other two locking elements 163 only in that its size is reduced to such an extent that it only closes the one adjacent central receiving space 161, which cannot be closed by either of the other two locking elements 163.

[0139] The other or second region 157 of the holding structure 153 of the upper component holder 152, in adaptation to the lower component holder 143 and the components to be received thereon, also has such a closing element 163 for the vertical supports 81 as well as such a closing element 163 in an enlarged version for closing the receiving space 161 receiving the support extensions 91. In an alternative design, the closing device 162 contains a safety belt (not shown), which is provided instead of the closing elements 163 and secures the components received on the upper component holder 152 against falling out.

[0140] Furthermore, according to a modified embodiment, each stand 23 and 24 has two wheel mounts 169 (Fig. 42). Each wheel mount 169 has a vertical wheel bearing sleeve 170, which is fastened to the stand 23 or 24, for example, by means of two support arms 171 arranged one above the other. The wheel 172, with its wheel bearing unit 173, is pivotally mounted about the vertical axis of a bearing spindle received in the wheel bearing sleeve 170 at a lower end. The wheel 172, with its wheel bearing unit 173, is mounted so as to be height-adjustable relative to the base support 148 via the bearing spindle, which is axially adjustable in the wheel bearing sleeve 170. On each of the two uprights 23 and 24, the two wheel mounts 169 are arranged in such a position opposite one another with respect to the upright 23, 24 that each wheel 172 is arranged laterally next to the base support 148 and next to the grid structure 145 of the lower component mount 143.Each wheel holder 169 can be attached to the stand 23, 24 by means of a quick fastener (not shown) and can be easily removed from the base unit 13 if necessary.

[0141] Furthermore, as an alternative to the feet 21 of the first embodiment (Fig. 1), four support units 174 are provided (Figs. 38 to 41), of which two support units 174 are arranged on the two opposing grid structures 145 and 149, in particular, in an easily removable manner and in an aligned arrangement. The support units 174 are attached to the underside of each grid structure 145 and 149 as downwardly projecting closed brackets or in the form of forklift pockets, which also project downwards over the underside of the base support 148, in such a way that, for example,a forklift truck can pick up the transport and lifting device 100 with its two forks for transport by reaching with the forks through the two support units 174 facing it and under the base support 138 into the two support units 174 located on the other side and in this way can carry the transport and lifting device 100 safely and in particular without tipping over.

[0142] Once the transport and lifting device 100 is positioned at its location, the wheels 172 with their wheel bearing units 173 are adjusted upward relative to the base support 148 until the base support 148 is supported on the ground by the support units 174. The ceiling table wings 2 and 3 are then pivoted upwards synchronously.

[0143] Fig. 50 shows the stiffening frames 142 as an example in their arrangement on a formwork support structure 101 that was constructed using the transport and lifting device 100. An additional, similar row of longitudinal beams 45 and beam extensions 91, supported by vertical supports 81, is positioned laterally next to the longitudinal beams 45 of the slab table wings 2 and 3, which are extended by means of the beam extensions 91. The stiffening frames 142 are inserted in the transverse direction between a vertical support 81 or the support column 12 of the formwork support structure 101 and a vertical support 81 of the additional row of longitudinal beams 45 and beam extensions 91 and are connected to them. The stiffening frames 142 ensure sufficient rigidity of the entire supplemented formwork support structure 101.

[0144] According to the embodiment shown in Fig. 38, each support column 11 and 12 is firmly attached to its associated lifting carriage 25. For this attachment, each support column 11, 12 (Figs. 47 and 48) contains, for example, two support parts 31 and 32, which are assigned to the two bearing arms 29 and 30, respectively, of the lifting carriage 25 and are firmly attached to the support column 11, 12 at a vertical distance from the bearing arms 29, 30. Each support part 31, 32 is fastened to the support column 11, 12 by means of a clamping bracket 175, which is screwed to the support part 31, 32. Each support part 31, 32 rests 29, 30 on the bearing arm 29, 30 and is fastened thereto by means of a screw connection. The height adjustment of the slab table 1 relative to the base unit 13 is determined by the vertical movement path of the lifting carriages 25 on the two uprights 23 and 24. Removal of the base unit 13 from the formwork support structure 101 erected with the slab table wings 2 and 3 (Figs. 49 and 50) is not intended.

[0145] In principle, the embodiments described above can be combined with one another.

[0146] List of reference symbols

[0147] Ceiling table 31 support part

[0148] Ceiling table wing 32 support part

[0149] Ceiling table wing 33 drive device

[0150] Supporting device 34 Drive means

[0151] Swivel bearing device 35 bottom

[0152] Synchronizer 36 toothed belt

[0153] Tooth segment 37 pinion

[0154] Toothed segment 38 tension pulley

[0155] Swivel axis 39 Drive pinion

[0156] Swivel axis 40 axis

[0157] Support column 41 slot

[0158] Support column 42 pinion shaft

[0159] Base unit 43 pinion bearings

[0160] Head area 44 rotary engagement part

[0161] Head plate 45 longitudinal member

[0162] Column head 46 inner end

[0163] Swivel device 47 connecting axis

[0164] Gas spring 48 cross member

[0165] Gas spring 49 support profile

[0166] Base plate 50 support profile

[0167] Foot 51 swivel bearing

[0168] Top 52 bearing bush

[0169] Stand 53 bearing bush

[0170] Stand 54 bearing axle

[0171] Pallet truck 55 sliding piece

[0172] Spindle 56 Outside corner ' Pipe 57 Nut

[0173] Adjustment device 58 nut holder

[0174] Bracket 59 Bearing arm bracket

[0175] Bearing arm 60 side wall

[0176] Bearing arm 61 Longitudinal slot Bearing bolt 100 Transport and lifting device

[0177] Swivel axis

[0178] Bearing arm part 101 formwork support structure

[0179] Connecting bolt 102 wheel

[0180] Intervention unit 103 lifting device

[0181] Front side 104 coupling device

[0182] Opening 105 holding device

[0183] Base plate 106 component holder

[0184] Screw bolt 107 support structure

[0185] Bolt 108 fixing element

[0186] Locking device 109 longitudinal flat bar

[0187] Locking piece 110 cross flat bar

[0188] Bolt holder 111 grid chamber

[0189] Inlet opening 112 slot

[0190] Bar 113 upper edge

[0191] Clamp bearing 114 longitudinal flat bar

[0192] Support 115 drop head

[0193] Bearing axle 116 wheel holder

[0194] Spindle base 117 tenon

[0195] Vertical support 118 pipe section

[0196] Connecting pipe 119 bearing holder

[0197] Bearing axis 120 locking bushing

[0198] End 121 locking pin

[0199] Longitudinal edge 122 lower bearing arm

[0200] Narrow side 123 upper bearing arm

[0201] Jack holder 124 opening

[0202] Latch 125 opening

[0203] Guide part 126 wedge

[0204] Formwork plate 127 Support plate

[0205] T arbor extension 128 longitudinal slot

[0206] Top 129 system part

[0207] Top 130 Frontal surface

[0208] Cross brace 131 Lower end thickening 154 Fixing element

[0209] Side surface 155 area

[0210] Mulde 156 area

[0211] Swivel operating device157 Area 158 Holding plate

[0212] Crank drive 159 spacer

[0213] Belt strap 160 retaining plate

[0214] Belt fixation 161 receiving space

[0215] Hand crank 162 locking device

[0216] Support part 163 locking element

[0217] Supporting element 164 bearing body

[0218] Stiffening frame 165 recess

[0219] Component holder 166 engagement part

[0220] Reception dome 167 recess

[0221] Lattice structure 168 coil spring

[0222] Retaining plate 169 wheel holder

[0223] Frame 170 wheel bearing sleeve

[0224] Base support 171 mounting arm

[0225] Lattice structure 172 rad

[0226] Mounting frame 173 wheel bearing unit

[0227] Top 174 support unit

[0228] Component holder 175 clamp

[0229] Support structure

Claims

Patent claims 1. Slab table (1) for concrete slab formwork with two foldable slab table wings (2, 3) and with a support device (4) which pivotally mounts the slab table wings (2, 3) in such a way that they can be adjusted between a pivoted-up functional position in which they form the slab table (1), and a pivoted-down transport position in which they are arranged next to one another in an upright orientation, characterized in that a synchronizing device (6) is provided which holds the two slab table wings (2, 3) in a symmetrical alignment with respect to the support device (4) and to one another during their pivoting movements and in their respective positions.

2. Ceiling table (1) according to claim 1, characterized in that a pivoting device (17) is provided which supports or entirely effects the joint pivoting of the ceiling table wings (2, 3) from their downwardly pivoted transport position into their upwardly pivoted functional position.

3. Ceiling table (1) according to claim 2, characterized in that the pivoting device (17) has at least one gas pressure spring (18, 19) for each ceiling table wing (2, 3), wherein the gas pressure spring (18, 19) is supported on the support device (4) and pivots the ceiling table wing (2, 3) in the direction of its functional position.

4. Ceiling table (1) according to claim 2 or 3, characterized in that a pivoting actuating device (135) is provided, with which the swiveling out and in of the ceiling table wings (2, 3) can be controlled in cooperation with the swiveling device (17).

5. Ceiling table (1) according to one of claims 1 to 4, characterized in that the two ceiling table wings (2, 3) are pivotally mounted on a head region (14) of the support device (4) about mutually parallel pivot axes (9, 10) and are arranged opposite each other on both sides of the support device (4) in the pivoted-down transport position.

6. Ceiling table (1) according to claim 5, characterized in that the support device (4) has two support columns (11, 12) which are spaced apart from one another and arranged parallel to one another, and in that each support column (11, 12) has a support head (16) with two pivot bearings (51) which form the two mutually parallel and spaced-apart pivot axes (9, 10) of the two ceiling table wings (2, 3).

7. Ceiling table (1) according to claim 5 or 6, characterized in that the synchronizing device (6) has two meshing tooth segments (7, 8), wherein one of the two tooth segments (7, 8) is connected in a rotationally fixed manner to one of the two ceiling table wings (2, 3) and is pivotable with the ceiling table wing (2, 3) about the respective pivot axis (9, 10).

8. Ceiling table (1) according to one of claims 5 to 7, characterized in that each ceiling table wing (2, 3) has two longitudinal beams (45) spaced apart from one another, that each longitudinal beam (45) is pivotally mounted on the respective support head (16) via the associated pivot bearing (52) and extends radially from the pivot axis (9, 10) and that the two longitudinal members (45) are connected to each other via a connecting axis (47) in a rotationally stable manner.

9. Ceiling table (1) according to one of claims 1 to 8, characterized in that a base unit (13) is provided on which the support device (4) supporting the ceiling table wings (2, 3) is received and supported on the floor side.

10. Ceiling table (1) according to claim 9, characterized in that the base unit (13) has a vertical adjustment device (27) on which the support device (4) is received and with which the support device (4) is vertically adjustable.

11. Ceiling table (1) according to claim 9 or 10, characterized in that the base unit (13) has a base plate (20) or a base support (148) on which two vertically upwardly projecting uprights (23, 24) are spaced from one another and fixedly attached in association with the two support columns (11, 12), that a lifting carriage (25) is mounted vertically displaceably on each upright (23, 24) and the lifting carriage (25) has a holder (28) for receiving the associated support columns (11, 12), that each lifting carriage (25) is vertically adjustable by means of a spindle (26) arranged parallel to the upright (23, 24), and that each spindle (26) is rotatably mounted on the base plate (20) or on the base support (148) and can be rotated by a drive device (33).

12. Ceiling table (1) according to claim 11, characterized in that the base unit (13) is supported by four wheels (102; 172), wherein the four wheels (102) are received on bearing receptacles (119) of the base plate (20) or wherein two of the four wheels (172) are each fastened to the two uprights (23, 24) by means of a respective wheel holder (169).

13. Ceiling table (1) according to claim 11 or 12, characterized in that the two spindles (26) are actuated jointly and synchronously by the drive device (33).

14. Ceiling table (1) according to one of claims 11 to 13, characterized in that the drive device (33) has a drive means (34), in particular a rotating toothed belt (36) or a rotating chain, which couples the two spindles (26) to one another, in particular below the base plate (20) or the base support (148), and actuates them in a synchronous rotation.

15. Ceiling table (1) according to one of claims 11 to 14, characterized in that a drive wheel or a drive pinion (39) of the drive device (33) is rotatably mounted on the base plate (20) or the base support (148) and can be driven from the upper side (22) of the base plate (20) or the base support (148).

16. Ceiling table (1) according to one of claims 11 to 15, characterized in that the holder (28) of each lifting carriage (25) has two bearing arms (29, 30) which project laterally from the lifting carriage (25) and are arranged vertically one above the other and which support the support column (11, 12) by means of two associated support parts (31, 32) which are fixedly attached to the support column (11, 12) at a vertical distance from the bearing arms (29, 30).

17. Ceiling table (1) according to claim 16, characterized in that the bearing arms (29, 30) are pivotally mounted on the lifting carriage (25) and can be pivoted from a storage position supporting the support column (11, 12) into an assembly position, in particular from the support parts (31, 32) of the support column (11, 12) during a relative movement of the lifting carriage (25) with respect to the stationary support column (11, 12).

18. Ceiling table (1) according to one of claims 1 to 17, characterized in that the two ceiling table wings (2, 3) are secured against pivoting in their downwardly pivoted transport positions by means of a locking device (72).

19. Ceiling table (1) according to one of claims 7 to 18, characterized in that at least one of the longitudinal beams (45) has an extension element which optionally extends the longitudinal beam (45) or a beam extension (91) which is mounted on the longitudinal beam (45) in a telescopically extendable manner.

20. Ceiling table (1) according to one of claims 1 to 19, characterized in that a transport and lifting device (100) is provided which has a movable base unit (13) and a lifting device (103) which is arranged on the base unit (13) and which supports the ceiling table (1) in a vertically adjustable manner, wherein the lifting device (103) has a coupling device (104) for in particular detachably receiving the support device (4) of the ceiling table (1) on the lifting device (103).

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