EP0851075B1 - Elevated platform or staging, particularly for use as floorshuttering for concrete - Google Patents

Abstract

The frame has upright supports (2) and main beams (4), which are attached with their ends to the supports. Secondary supports (6) are supported on the main beams by their lower surface (36) lying the main beams upper surface (34). Panels (8) are located on the secondary beams. A positively formed fixture is provided between the main and secondary beams by an elevatable part of the beams connection, which provides against movement in a specified spatial plane. The fixture is formed by the engagement of a protruding element (42) from the main beam protruding upwards into openings (18) in the secondary beams.

Description

(a) aufrechte Steher;

(b) Hauptträger, die sich an den Stehern abstützen;

(c) Nebenträger, die sich durch Auflagern einer unteren Lagerfläche auf einer oberen Lagerfläche mindestens eines Hauptträgers abstützen;

(d) Platten, die auf Nebenträgern aufgelagert sind; und

(e) mindestens bei einem Teil der Hauptträger/Nebenträger-Auflagerstellen eine Festlegung zwischen dem betreffenden Hauptträger und dem betreffenden Nebenträger gegenüber Kräften beliebiger Richtung in der von der oberen Lagerfläche und von der unteren Lagerfläche der betreffen den Hauptträger bzw. Nebenträger aufgespannten Lagerflächenebene vor gesehen ist;

The invention relates to an elevated platform or platform, in particular in the form of slab formwork for concreting, comprising:

(a) upright posture;

(b) main beams supported on the uprights;

(c) secondary beams which are supported by supporting a lower bearing surface on an upper bearing surface of at least one main beam;

(d) plates supported on secondary beams; and

(e) at least in part of the main girder / secondary girder support points a provision is made between the relevant main girder and the relevant secondary girder against forces of any direction in the plane of the bearing surface spanned by the upper bearing surface and from the lower bearing surface of the relevant main girder or secondary girder ;

Such slab formwork in which the main beam and the secondary beam form a support grid arranged in two levels are from FR-A-1532639 known. The structure known from this document enables an arrangement the secondary beam in certain grids.

However, the attachment known from this document the secondary girder on main girders no blunt impact from secondary girders possible. This document also proposes a non-positive screw connection between Main and secondary beams. This complicated platform to build or stage has not been widely used in practice. So far you have in the Practice from the point of view of optimally determining the secondary carrier on the main beams with high variability of the location on the beams no significant attention paid.

The invention has for its object a platform or stage of the beginning to create the type mentioned, in which an optimal subcarrier definition is realized with high variability of the location of the carrier.

DE 1434365 A proposes the attachment of flat board-like supports, which in the Level of the control panels are provided by means of pin-like projection elements on stands.

(f) daß die Festlegung eine formschlüssige Festlegung ist, die durch Eingriff von Vorstehelementen mit Öffnungen und/oder mit Trägerrändern gebildet ist, wobei die Eingriff-Vorstehelemente von dem betreffenden Hauptträger nach oben vorstehen und die Eingriff-Öffnungen und/oder die Eingriff-Trägerränder an dem betreffenden Nebenträger vorgesehen sind und/oder umgekehrt;

(g) daß bei dem betreffenden Nebenträger eine Längsreihe von Vorstehelementen bzw. Öffnungen, sofern solche vor handen sind, längs des Nebenträgers vorgesehen sind;

(h) und daß bei dem betreffenden Hauptträger mehrere Längsreihen von Vor stehelementen bzw. Öffnungen nebeneinander in Längsrichtung des Hauptträgers und parallel zueinander vorgesehen sind.

To achieve this object, the platform or stage is characterized according to the invention in that

(f) that the fixture is a positive fixation formed by engagement of protruding elements with openings and / or with support edges, the engagement protruding elements protruding upwards from the relevant main support and the engagement openings and / or the engagement support edges are provided on the secondary carrier in question and / or vice versa;

(g) that a longitudinal row of protruding elements or openings, if any, are provided along the secondary carrier in the secondary carrier concerned;

(h) and that several longitudinal rows of standing elements or openings are provided side by side in the longitudinal direction of the main support and parallel to each other in the main support concerned.

In the invention, the main beam / secondary beam can be fixed with little Create workload, usually by simply putting on the secondary beam. The form-fitting determination prevents a shift of the Secondary beam in the longitudinal direction of the main beam, in the longitudinal direction of the secondary beam and in all composite directions in the bearing surface plane. Preferably, the execution is such that even moments that are about Axis standing perpendicular to the bearing surface plane, form-fitting be included. The platform or stage is very variable because of secondary beams in a variety of selectable locations on a main beam under consideration can be stored and because even with a secondary carrier considered under a variety of digits of its length for bearing on one Main carrier can be chosen. This variability is of great importance that the platform or stage, especially the ceiling formwork, adapted from standard components depending on the specific task can build.

In the present document, the term "is concerned Main beam "or" relevant secondary beam "and possibly also "concerned carrier" used. With this term are those Carrier defined using the solution according to the invention are fixed to each other.

If spoken above of "a series of protruding elements or openings" then this is not meant to be of limiting importance, that it is imperative must act in a straight line, although this case is preferred. It several rows can also be provided side by side.

It is particularly favorable if one for the mutual distance Projecting elements and / or the openings a certain pitch chooses. It is particularly favorable if this grid dimension in the The protruding elements are the same as for the openings.

It should be noted that the term "openings" is not just that Openings that are surrounded by material all around, but also openings that are open to one side, e.g. a Recess at an edge of the bearing surface of the main beam or In addition to the carrier.

It is preferred as particularly simple that for the positive Engagement protruding elements in the upper bearing surface of the concerned Main beam and openings in the lower storage area of the concerned Supports are provided or vice versa. In this respect, the sensible training of the storage areas to create the funds used for positive engagement.

From the standpoint of ease of manufacture, it is preferred to provide short bolts made of plastic or metal as projecting elements, on the carrier concerned (main carrier or secondary carrier) are attached. However, alternative versions are quite possible possible, in particular by bent from the storage area level Material areas of the carrier. It is particularly favorable if the Short bolts are attached in openings of the carrier concerned. In particular, it can be provided that the main carrier in question and / or the secondary carrier in question has smaller openings therein attached protruding elements and larger engagement openings having. With this training you can be the main carrier and First create secondary beams in the same way with openings and in one subsequent manufacturing step by attaching the short bolts Create beams with protruding elements.

From the point of view of the most rational production and storage as simple as possible both at the manufacturer and at It is preferred by the user that the main beam in question and the relevant secondary beams, possibly with the exception of their length, the same are formed or the same apart from the protruding elements are trained. The one described in more detail below Embodiment of the invention will demonstrate that one absolutely with the same main educators and Subcarriers can work, but it can alternatively be practical with regard to the characteristic, whether and on which surface or which Surfaces protruding elements are present, different main beams and to provide secondary beams. As a rule, the main beam more load have to take up as the secondary beams, one sees preferably Main beams with a shorter standard length than the secondary beams in front. But you can also main beams with greater material thickness than provide for the secondary carriers.

In a further development of the invention, it is preferred that the person concerned Main beam and / or the relevant secondary beam made of folded Sheet, preferably sheet steel, are made. The openings are preferably stamped before folding. So the straps can be manufacture very efficiently. The construction is considerably cheaper than that Made from aluminum.

Preferably, the main carrier in question and / or the secondary beam in question consisting of two essentially U-shaped profiles, those with their backs facing each other and at a distance from each other are connected. In this way, the carriers get - in top view considered - an increased width, which is both for the main beam for The cheap support of secondary beams is an advantage as well the secondary carrier to create increased security against Tipping over when erecting the platform or the stage.

The two profiles are preferably by screw connections connected to each other and by spacers, preferably made of Plastic, kept at a distance. This ensures a particularly rational Manufacturability.

Are preferably in the vertical double web of the relevant Main carrier and / or the relevant secondary carrier openings provided, preferably in the form of one or more rows along the Carrier. Again, the provision of the openings in the Pitch particularly preferred. The openings described can for a whole host of functions are used, in particular Fastening a nail bar between the two profiles, attachment of secondary structures such as parapets and attached walkways and much more.

The structure of the carrier from two spaced profiles has in particular also the following advantage, which is very important in practice. Usually the plates will be placed on the side beams that the bumps between adjacent panels - seen in plan view - approximately coincide with the longitudinal center line of the secondary beam. At the Concreting often runs through the plate joints and this no longer contaminates the wearer, but simply runs in between down through the two half beams.

In a preferred development of the invention, at least one considerable part of the uprights / main girder support points positive determination between the relevant post and the the main beam concerned against forces in any direction in one direction Plane which is perpendicular to the longitudinal direction of the post and through which leads support point provided.

This positive definition can, but does not have to, according to described main girder / secondary girder definition principle take place, in particular by the engagement of protruding elements in Openings can be formed, the protruding elements from an upper The storage area of the upright in question protrudes and the Openings in a lower storage area of the main beam in question are trained or vice versa.

It is further preferred that at least a significant part of the Auxiliary support / plate support points form-fitting determination between the secondary beam in question and the plate in question against forces of any direction in the support surface plane is provided. Again, you can, but need not, the positive locking through the engagement of protruding elements in Form openings, the protruding elements from an upper The storage area of the relevant secondary beam protrude upwards and the Openings in a lower storage area of the plate in question can be trained or vice versa.

Preferably, at least a substantial part of the uprights is one equipped such a head that a main beam over it can be supported on the upright. This way you can get main beams not only support at their ends, but also in between.

Preferably, at least a substantial part of the uprights is one Drop head equipped, at least one support point, in most Cases two support points, for a main beam and relative to the upper end of the post can be lowered. by virtue of this training can be the largest by lowering the drop head Part of the components of the slab formwork, namely main girders, Remove secondary beams, slabs, before the concrete is full Has reached final strength. The supports remain for a while and with its upper end can the concrete ceiling in the form of a Support the point grid. The other components of the slab formwork can already be used for other purposes.

The previously described, at various points on the platform or the Existing protruding elements can move you towards have their free end tapering cross-section, it being preferably only a slight taper. The rejuvenation leads to an easier assembly of the concerned Components of the platform or the stage, because the introduction into the Partner opening even with less precise, previous alignment is possible. It is particularly favorable if the protruding elements and / or the openings have a circular cross section.

In a preferred development of the invention,
that trusses are attached as stiffening cross-connections with their ends on the relevant posts;
that at least in a substantial part of the uprights / truss end connection points there is a positive connection between the relevant upright and the relevant truss end against forces in all three spatial directions;
and that the post in question is free of transverse cantilever over its outer boundary at the connection point in question.

As a result of these measures, the platform according to the invention has or Stage a comprehensive, positive definition of the relevant Traverse on the stand in question, without any effort would be provided transverse cantilever. The form-fitting Specification also leads in particular in the longitudinal direction of the upright in question to the fact that the trusses can also withstand high loads in the vertical direction, without taking a security risk.

It is noted that the phrase "opposite Forces of all three spatial directions "not the moments around the three Includes spatial axes. The one described in more detail below Embodiment is e.g. show that compared to torques the longitudinal axis of the traverse in question is not form-fitting Determination is in place. If a platform or stage the inventive, positive definition against all forces possesses three spatial directions, is opposed to form-fitting determination Torque loads around the three spatial axes are no longer primary Importance. On the other hand, it is quite possible to use the invention Platform or stage with a form-fitting definition Moments to equip one, two or three spatial axes.

It is also pointed out that the term "traverse" is also a Arrangement of two or more horizontal struts one above the other are connected to one another by connecting struts; such Arrangements are usually called frames, which as stiffening cross connections between posts are installed can.

Preferably, the positive locking against forces is in Longitudinal direction of the relevant post by the intervention of a Projecting element formed in an opening, wherein the projecting element protrudes the relevant truss end and the opening on the relevant post is formed or vice versa. The former of these two options is particularly preferred because one - dieas Looking at the entire platform or stage - more means of intervention the standers than at the end of the truss and because it Stand openings are particularly easy to manufacture.

Preferably there is a series of protruding elements or openings along at least part of the post is intended to be one To be able to make the truss connection at a selectable height. It is particularly favorable if the projecting elements or openings in a grid spacing is provided; you can also be cheap provide that there are openings that are also for the Definition of two telescopically adjustable upright parts one Function.

Preferably, the protruding element or one having the opening Element can be moved back and forth in one direction, which is essentially corresponds to the longitudinal direction of the truss. Because of this measure can the crossbar in question is particularly problematic between two Bring upright to be connected by e.g. the two Projecting elements are retracted at the two truss ends, see above that the traverse with the somewhat shortened length just between the fits two uprights. Then you can e.g. the two protruding elements Extend in the longitudinal direction of the truss and into the appropriate openings in use the two uprights. However, it is pointed out that there are also solutions without such relocability Protruding elements or the elements having the opening, e.g. a horizontal transverse insertion of the traverse, the Move the protruding elements into slot-like upright openings.

Is preferably for the positive determination between the to the relevant post and the relevant truss end Forces perpendicular to the longitudinal direction of the post in question Directions an engagement between an engagement part on the relevant truss end and an undercut longitudinal recess or an undercut longitudinal projection of the stand in question intended. This type of positive determination has the advantage that they can be created easily and when dismantling the scaffolding can be solved.

The engagement part described in the last paragraph is preferably in the essentially shiftable back and forth in the longitudinal direction of the truss. Here very similar considerations apply, especially with regard to The traverse in question can be inserted between two to be connected Stand, as described above in connection with the protruding element or the element having the opening has been described.

According to a particularly preferred embodiment because of its simplicity it is provided that in the area of the relevant truss end Bolt is arranged, which is in the longitudinal direction of the concerned Traverse extends and is rotatable about its longitudinal axis and a Bolt head which is narrower in a first transverse direction than in a second transverse direction so that the bolt head in a first Rotational position can be introduced into the longitudinal recess and in a second Fixed rotational position against pulling out in the longitudinal direction of the crossbar is. Due to this training, the creation of the positive locking against forces in the longitudinal direction of the stand in question are particularly simple. Preferably, there are several distributed over the circumference of the post undercut longitudinal recesses or undercut Longitudinal projections, especially four.

After a particularly important, preferred further education is in End region of the engagement part, the protruding element or the opening educated. Because of this training, one can manipulate only the engaging part the favorable displacement of the protruding element or the element having the opening and the engagement part in Truss longitudinal direction and also the positive Determination against forces in all three spatial directions accomplish. Alternatively, it is possible that the Truss end associated protruding element or opening at from Bolt to provide spaced position and not in the bolt too integrate.

A cross element is preferably assigned to the engagement part, with which the engaging part is displaceable in its longitudinal direction and around its Longitudinal axis is rotatable. This cross element thus allows a comfortable Manipulation of the engaging part.

The bolt preferably has an elongated through opening and is a wedge element passing through the through hole provided by the movement of the bolt head in the undercut longitudinal recess is clamped. In addition, the Bolts preferably in the state without applying wedge force of the wedge element rotatable about its longitudinal axis. The wedge element met thus a double function, in that the bolt is initially without generation a wedge force is rotated about its axis and then by means of wedge force is pulled away from the relevant post. at appropriate training can be added as a third function that using the wedge element, the bolt back and forth in the longitudinal direction can shift. Finally, with appropriate training as fourth function to add that one by longitudinal displacement of the Bolt by means of the wedge element at the same time that on the bolt provided projection element in engagement with the desired opening of the stand can bring.

At least a substantial part of the uprights is preferably below Built using hollow sheet steel profile. Such upright are cheaper to manufacture than aluminum and are good Cross-sectional design and good material utilization are not essential heavier than aluminum stands.

Preferably, at least a significant part of the uprights essentially at least part of its length square cross section with four undercut longitudinal recesses on.

The post in question preferably has at least two parts, which are telescopically adjustable relative to each other. In this way you can adjust different post lengths. With the standers further, conventional components may also be present, such as Head plate, foot section, spindle height adjustment device for Fine adjustment.

The inner upright part preferably has one square cross section, which is particularly good too an outer upright part with a substantially square cross section and four undercut longitudinal recesses.

The crossmember in question preferably has at each end of the crossbar a truss head that is cast or forged Workpiece is and that of the definition of the relevant traverse contains the agent in question. As a result, can to design the crossbeam as a very simple profile; that of fixing serving means are only on the relevant truss head supported, the required, more complicated shape without May have difficulty.

In the above description, the Expressively "for a significant portion of ... (e.g. Main beam / secondary beam support points, the uprights / main beam support points, the secondary beam / plate support points, the upright, the Upright / Truss End Connections) "was used. Hereby should be expressed that it is for the realization of the Invention is not essential that all the positions mentioned in the described manner are formed. So it would be z. B. possible only with every second traverse in the preferred development of the invention to provide for the intended optimal setting on the relevant post. Overall, however, it is preferred to use the platform or stage consistently the measure according to the invention or preferred according to the invention To take measures.

When spoken of "opening" in the above description has not been a through opening but it can also be a sack opening, although through openings for easier manufacture are usually preferred.

It is expressly pointed out that the objects of the Claims 12, 16, 18 (including the associated preferred Further training) have an independent inventive meaning. This Platforms or stages can be implemented in a technically meaningful way even without part or all of the features of claim 1.

Finally, it should be noted that the invention Platform or stage also as a grandstand, especially a grandstand, can be formed with panels at several levels. To this Purpose can e.g. diagonally from bottom to top Support main girders on uprights and side girders, e.g. with suitable intermediate parts, running horizontally Support the main beams. Alternatively, you can use the stand let the supported main beam run horizontally and on the Main beams, secondary beams running diagonally from bottom to top support; in this case you have e.g. suitable intermediate parts for horizontal support of the panels on secondary beams. Even in the case of You can use short bolts on the stands and / or the stands Main beams and / or the secondary beams and / or the plates work, with the possibility of providing so-called tilting bolts, which between an attachment position and a functional position by one Axis are tiltable, and / or provide snapping bolts that can only be removed with effort.

Fig. 1

eine perspektivische Darstellung eines Teils einer Deckenschalung;

Fig. 2

eine Seitenansicht eines oberen Bereichs der Deckenschalung von Fig. 1;

Fig. 3

eine perspektivische Darstellung eines unteren Bereichs eines Stehers;

Fig. 4

eine Ansicht eines Traversen-Endstücks gemäß Pfeil IV in Fig. 1, in vergrößertem Maßstab.

The invention and further developments of the invention are explained in more detail below with reference to an exemplary embodiment shown in the drawing. It shows:

Fig. 1

a perspective view of part of a slab formwork;

Fig. 2

a side view of an upper region of the slab formwork of Fig. 1;

Fig. 3

a perspective view of a lower portion of a post;

Fig. 4

a view of a truss end piece according to arrow IV in Fig. 1, on an enlarged scale.

The slab formwork shown is also an illustration of a scaffold, if you imagine that those to be described later Slabs are not formwork for concreting.

The section of a slab formwork drawn in Fig. 1 consists of following core components: vertical uprights 2, horizontal main beams 4, each with its two end regions on two uprights 2 support, horizontal secondary beams 6, which are normally each supported on two main beams 4, formwork panels 8, each on Supports 6 are supported, and trusses 10, which - if and where required for the stability of the slab formwork - as stiffening Cross connections of uprights 2 are provided. The drawn one Post 2 is only drawn with an upper area of its length; on lower region of its length is drawn in Fig. 3.

The drawn section of the ceiling formwork shows only one post 2. For the slab formwork in its entirety is a variety of Stand 2 provided in a grid point pattern, for. B. with a Distance in the main beam longitudinal direction of 1.5 m and a distance in Longitudinal beam of 3 m.

The upright 2 has in its lower part 11 in FIG essential square cross section with four dovetail-shaped longitudinal recesses 14, each centered in one Square side. In its upper part 12 in FIG. 1, the upright 2 has one square cross-section, with the inside of the post 2 facing surfaces of the longitudinal recesses 14 fits together. The upper part 12 is telescopic in the lower part 11 of the post 2 inserted. The upper part 12 has one in each of its square sides vertical row of openings 16, the lower part 11 has in Due to each longitudinal recess 14 also a distributed in the longitudinal direction Row of openings 18, the spacing of both Rows of openings is the same. You can continue the upper part 12 in the Push lower part 11 in or pull out further. By means of a can be pushed through two pairs of openings 16, 18 pin 20 to fix the post in the desired length.

As an upper end, the upright 2 has a head piece 22 with a plate-like, somewhat enlarged, upper end.

A piece below the head piece 22 is a drop head on the upright 2 24 attached, the cantilever on two sides of the post 2 Support surface 26, in each case for an end region of a main carrier 4 having. Two short bolts 42 protrude from each support surface 26 Protruding elements upwards.

It is noted that the head 22 if desired against a slightly modified headpiece with a reduced, plate-like, upper end can be replaced. Then you can with the drop head 24 shifted all the way to the top Create support surface 26 so that a leading over it Main beam can be supported in its central area.

Except for the differences to be described below, these are Main beam 4 (one of which is drawn in Fig. 1) and the Subcarrier 6 (two of which are drawn in Fig. 1) are the same educated. They each consist of two half beams with in essential U-shaped profile open to the side. The two Half beams 4a, 4b and 6a, 6b face one another with their backs and connected with each other at a distance. The connection of the half beams is made by screws or bolts 30, wherein Spacers 32 made of plastic between the two half beams are interposed (Fig. 2). Distributed over the length of the carrier 4, 6 are connecting bolts 30 and spacers 32 in several places intended.

Through the horizontal, upper legs of the two half beams 4a, 4b an upper bearing surface 34 is formed in the main carrier 4. Analogous is through the lower, horizontal legs of the half-beam 6a, 6b a lower bearing surface 36 is formed in the secondary carrier 6. Also the Secondary support 6 has an upper bearing surface 38, analogous to main support 4.

All four horizontal legs of the main beam 4 and all four horizontal legs of the secondary beam 6 are each with a row of circular openings 40 spaced apart in a grid dimension provided, the grid dimension a is the same everywhere. Each in the middle between adjacent openings 40 are in all horizontal legs circular, further openings 41 of smaller diameter available. In in the two upper horizontal legs of the main beam 4 provided further openings 41, short bolts 42 are preferred made of plastic (e.g. by shoulder system on top and Hot stamping at the bottom behind the further opening 41), which in its a circular cross-section fit into an opening 40 of the partner carrier, but slightly tapering upwards. It was the first Difference between the main beam 4 and the secondary beam 6 (the has no short bolts 42); a second difference is about twice the length of the secondary beam 6, as already further ahead indicated.

It can be seen that each of the subcarriers 6 shown with two Openings 40 in its lower bearing surface 36 two short bolts 42 has taken up from the upper bearing surface 34 of the main carrier 4th protrude upwards. This is a positive definition of relevant secondary beam 6 on the relevant main beam 4 against forces of any direction in the bearing surface plane (i.e. the plane formed by the bearing surfaces 34, 36).

Furthermore, two formwork panels 8 can be seen in FIG connect to each other. The formwork panels 8 are on secondary beams 6 superimposed. It is shown that a formwork panel 8 with an edge the half beam 6a of the secondary beam 6 rests while the other Formwork sheet 8 with an edge on the other half beam 6b of the Subcarrier 6 rests in such a way that the joint 50 over the space comes to lie between the half beams 6a, 6b. You can also see that the formwork panels 8 in their support edges with down projecting short bolts 52 are provided, which in openings 40 in the upper bearing surface 38 of the secondary beam 6 are inserted so that the Formwork panels 8 are positively fixed.

Main beams 4 and 6 are secondary beams, with the exception of those described two differences, constructed identically. As a result, they can on the same production line are manufactured, the described Openings 40 and 41 and those to be described below Openings are punched out before the semi-beams are shaped into the U-shape Profiles are bent. In the upper bearing surface 34 only the Main beam 4, the short bolts 42 are then attached. It will expressly pointed out that when determining stander 2 / main beam 4, main beam 4 / secondary beam 6, secondary beam 6 / formwork panel 8 the role of protruding element 42 or 52 and opening 40 each can be reversed as described above. At the function this does not change anything. It also expressly points out pointed out that one can alternatively proceed that the Short bolts in the main beam 4 such a distance from each other have a pair of short bolts the two outer edges 54 of the lower Bearing surface 36 of the superimposed secondary beam 6 between them includes. As a result, there would be no form-fitting determination in Longitudinal direction of the secondary beam 6 reached, but one could e.g. Attach the short bolt in the lower bearing surface 36 of the secondary beam 6, those with outer edges 56 of a half beam 4a of the main beam interact.

In the described embodiment, the short bolts 42 or 52 in the support surface 26 of the upright 2, in the upper bearing surface 34 of the main support 4, and below on the plates 8 with respect to their Diameter in the protruding area, in terms of their light weight Taper and the same in terms of their material (plastic). This is no imperative. You could also use the short bolts e.g. Provide also made of metal.

The mutual, positive engagement between the upright 2, one The main carrier 4, a secondary carrier 6 and a plate 8 are shown in FIG. 2 recognizable more clearly. Tabs 27 bent upwards on the Support surfaces 26 of the post 2 engage behind the spacer 32 Main beam 4 and thus result in a better direction for fixing by means of the short bolts 42.

1 and 2 you can also see openings 44 larger Diameter and further openings 45 of smaller diameter, arranged in a total of three rows, in the vertical webs of the Beams 4 and 6. Here you can make connections as described above.

3 is a lower region of the upright 2 from FIGS. 1 and 2 shown. A foot part 94 is in the upright part 11 from below inserted, which has a square cross section like the upper part 12 has, and by means of a through openings 16, 18 inserted Pin 20 secured. At the lower end, the foot part 94 has one Spindle area 96 for precise adjustment of the length of the post 2.

The cross members 10 shown in FIG. 1 each have a U-shaped, cross section open to the side. At each end of the truss a truss head 60 attached, e.g. B. welded. The Traverse heads 60 are each to the vertical plane 62-62 symmetrical and can be reoriented for both Truss ends are used. With the drawn The crosshead heads 60 are cast or cast forged parts. At that of the traverse 10 opposite end, each truss head 60 has two horizontal, protruding ribs 74.

Some details of the truss head 60 can be seen better in FIG. 4 see.

The crosshead head 60 has a continuous one approximately in its center Bore in which a bolt 64 is longitudinally displaceable. The The longitudinal direction of the bolt 64 coincides with the longitudinal direction of the cross member 10 together. The bolt 64 has a bolt head 66, which at the traverse 10 shown on the far right in FIG Rotational position of the bolt 64 measured in the horizontal direction is narrower than measured in the vertical direction. In this drawn rotational position, the bolt head 66, as below will be described in more detail from the beginning in one of the Introduce longitudinal recesses 14 in the upright 2. If you do that Bolt 64 rotates about 90 ° about its longitudinal axis, the locks Bolt head 66 in the dovetail undercut Longitudinal recess 14, but without already being clamped in it.

At the end region of the bolt 64 facing away from the crossmember 10 integrally provided a projecting element 68 with a circular cross section, protruding in the longitudinal direction of the bolt 64 over the previously described bolt head 66 also. The protruding element 68 is from its diameter on the openings 18 and 16 in the upright 2 Voted. Furthermore, the dimensions are chosen so that the described rotation of the bolt 64 only about its longitudinal axis can complete if the bolt 64 so far to the right in Fig. 2 (after 1 in the right-hand traverse 10) there has been that the protruding element 68 in an opening 18 of the Stayer 2 is located.

The bolt 64 has an elongated through opening 70 which is shown in FIG. 4 is drawn with broken lines and the shape of a flat cuboids. A wedge element 72 is provided that this Through opening 70 passes through.

If you look at the crosshead 60 in a section 76-76 (see Fig. 4), then the truss head 60 has one on the left side upper recess 78 and on the right side a lower recess 80. As a result, the wedge element 72 can be seen from the right in FIG. 1 drawn, horizontal position in the drawn in Fig. 2, Turn the vertical position. It works in the vertical position Front surface 82 of the wedge element 72 with an abutment surface 84 of the Truss head 60 together. Therefore, the opposite of the Front surface 82 of oblique rear surface 86 of wedge element 72 in cooperation with one end 88 of the through opening 70 Longitudinal displacement of the bolt 64 to the left in Fig. 4 with wedge force cause. The wedge element 72 is by a cross pin 90 on one its ends captive, whereby the bolt 64 is captive.

When attaching a traverse 10 between two uprights 2 you go as follows (only the processes at one end of the truss be described, but it is understood that the described Operations are carried out at both ends of the truss):

First, by engaging the wedge element 72, the bolt 64 - of course, together with his bolt head 66 and that integrated protruding element 68 - shifted as far to the left in FIG. 4, that the entire bolt head 66 in the space between the two Ribs 74 is located, and the wedge element 72 is placed horizontally. In In this state, neither the bolt head 66 nor the protruding element protrudes 68 beyond the ribs 74, the cross member 10 can from the side be inserted between the two uprights 2. Next up by engaging the wedge element 72, the bolt head 66 from the Space moved out between the ribs 74 and into the longitudinal recess 14 of the post 2 in question, so far that the Projecting element 68 comes into an opening 18 of the post 2. Then the wedge element 72 is rotated by approximately 90 degrees, the bolt head 66 becomes wider in the horizontal direction and blocks itself in the undercut longitudinal recess 14. Then from above in Fig. 4 struck with a hammer on the wedge element 72, whereby the bolt 64 is pulled to the left in Fig. 4 and the bolt head in the Longitudinal recess 14 is clamped (because the ribs 74 on the Form an abutment on the outside of the upright 2); the protruding element 68 is long enough so that it does not come out of the Opening 18 comes out. The loosening of the fixing of the traverse 10 the relevant post 2 takes place in reverse order.

If 8 concrete is poured onto the formwork panels described , as described, you have a slab formwork in front of you. If however, the area formed by the plates 8 z. B. to walk on by workers or to support a part of the system that subsequently to be attached to another part of the building one can no longer speak of slab formwork, but speaks better of a platform or a (work) stage. To the described construction according to the invention changes as a result naturally nothing.

Alternatively, what is drawn in Fig. 1 can also be called a framework, and one speaks of a framework if the initiation of Loads from the heads of the uprights 2 are in the foreground, and from a scaffolding when introducing loads from the trusses 10 ago is in the foreground. In the case of a scaffold, the plates 8 not necessarily exist. When training as a scaffolding are preferably there at least in part of the trusses Working platforms stored.

Claims (15)

1. A raised platform or staging, designed in particular as ceiling formwork for concrete-working, comprising:

   (a) upright posts (2);

   (b) main beams (4) supported on said posts (2);

   (c) secondary beams (6) supported in that a lower bearing surface (36) thereof is superimposed on an upper bearing surface (34) of at least one main beam (4);

   (d) and boards (8) superimposed on said secondary beams (6),

   (e) at least part of the main beam/secondary beam superimposition locations being provided with a fixation between the respective main beam (4) and the respective secondary beam (6) with respect to forces in arbitrary direction in the bearing surface plane constituted by the upper bearing surface (34) and the lower bearing surface (36) of the respective main beams (4) and secondary beams (6), respectively;
   characterized in

   (f) that said fixation is a positive fixation constituted by engagement of projecting members (42) with openings (40) and/or with beam edges (54), said projecting members (42) projecting upwardly from the respective main beam (4), and the openings (40) and/or the engagement beam edges (54) being provided on the respective secondary beam (6) and/or vice versa;

   (g) that the respective secondary beam (6) is provided with a longitudinal row of projecting members (42) and openings (40) respectively, if such are provided, longitudinally of said secondary beam (6);

   (h) and in that the respective main beam (4) is provided with several longitudinal rows of projecting members (42) and openings (40), respectively, in juxtaposed manner in the longitudinal direction of the main beam (4) and parallel to each other.
2. A platform or staging according to claim 1,
   characterized in that, for said positive engagement, the projecting members (42) are provided in the upper bearing surface (34) of the respective main beam (4) and the openings (40) are provided in the lower bearing surface (36) of the respective secondary beam (6) or vice versa.
3. A platform or staging according to claim 1 or 2,
   characterized in that said projecting members (42) are short bolts of plastics or metal attached to the respective beam (4; 6).
4. A platform or staging according to claim 3,
   characterized in that the respective main beam (4) and/or the respective secondary beam (6) have smaller openings (41) beside said openings (40), said smaller openings (41) having projecting members mounted therein.
5. A platform or staging according to at least one of claims 1 to 4,
   characterized in that the respective main beam (6) and the respective secondary beam (6) have the same cross-sections.
6. A platform or staging according to at least one of claims 1 to 5,
   characterized in that the respective main beam (4) and/or the respective secondary beam (6) are manufactured of canted sheet metal.
7. A platform or staging according to at least one of claims 1 to 6,
   characterized in that the respective main beam (4) and/or the respective secondary beam (6) consist of two substantially U-shaped channel sections arranged with their backs facing each other and connected to each other in spaced apart manner.
8. A platform or staging according to claim 7,
   characterized in that the two channel sections are connected to each other by screw-type connections (30) and are kept spaced apart by spacers (32), preferably of plastics.
9. A platform or staging according to at least one of claims 1 to 8,
   characterized in that at least part of the post/main beam supporting locations has a positive fixation between the respective post (2) and the respective main beam (4) with respect to forces in arbitrary direction in a plane perpendicular to the longitudinal direction of the post (2) and extending through the respectively supporting location, said positive fixation being established by engagement of projecting members (42) with openings (40), with said projecting members (42) projecting upwardly from an upper bearing surface (26) of the respective post (2) and the openings (40) being formed in a lower bearing surface of the respective main beam (4) or vice versa.
10. A platform or staging according to at least one of claims 1 to 9,
    characterized in that at least part of the secondary beam/board superimposition locations has a positive fixation between the respective secondary beam (6) and the respective board (8) with respect to forces in arbitrary direction in the plane of the superimposition area, said positive fixation being constituted by engagement of projecting members (52) with openings (40), with said projecting members (52) projecting upwardly from an upper bearing surface of the respective secondary beam (6) and said openings being formed in a lower bearing surface of the respective board or vice versa.
11. A platform or staging according to at least one of claims 1 to 10,
    characterized in that at least part of the posts (2) is provided with such a head (22) that a main beam can be supported on said post (2) while extending beyond said head.
12. A platform or staging according to at least one of claims 1 to 11,
    characterized in that at least part of the posts (2) is provided with a drop head (24) having at least one supporting location (26) for a main beam (4) and being adapted to be lowered downwardly in relation to the upper termination of the post (2).
13. A platform or staging according to at least one of claims 1 to 12,
    characterized in that said projecting members (42) have a cross-sectional area tapering towards the free end thereof.
14. A platform or staging according to at least one of claims 1 to 13,
    characterized in that at least part of the posts (2) is composed using sheet steel hollow section material.
15. A platform or staging according to at least one of claims 1 to 14,
    characterized in that at least part of the posts (2) has at least two parts (11, 12, 94) that are telescopically adjustable relative to each other.

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