EP2984251B1 - Lining floorboard for scaffolds - Google Patents

Description

1. (a) zwei äußere, beabstandete Längsträger, vorzugsweise aus Metall;
2. (b) eine Mehrzahl von nebeneinander positionierten, im Wesentlichen plattenartigen und rechteckigen Elementen aus Kunststoff, die jeweils von dem ersten Längsträger zu dem zweiten Längsträger führen;
3. (c) wobei die Elemente jeweils mit dem ersten Längsträger und dem zweiten Längsträger verbunden sind;
4. (d) und wobei jeweils benachbarte Elemente, zumindest hinsichtlich rechtwinklig zu den Element-Nutzseiten wirkender Kräfte, bidirektional formschlüssig miteinander in Eingriff sind,

dadurch gekennzeichnet, dass die Elemente rückseitige Versteifungsrohre mit in Richtung von dem ersten Längsträger zu dem zweiten Längsträger verlaufender Längserstreckung haben.The invention relates to a flooring plank for scaffolding, comprising the following features:

1. (a) two outer, spaced side members, preferably of metal;
2. (B) a plurality of juxtaposed, substantially plate-like and rectangular plastic elements, each leading from the first side member to the second side member;
3. (c) wherein the elements are respectively connected to the first side member and the second side member;
4. (d) and wherein in each case adjacent elements, at least in terms of forces acting at right angles to the element useful sides, are bidirectionally positively engaged with one another,

characterized in that the elements have back stiffening tubes extending in the direction of the first side member to the second side member longitudinal extent.

A decking for scaffolds having the above features (a) to (d) is known from DE 10 2011 007 431 A1 known. Each adjacent elements are, at least in terms of forces acting at right angles to the element-Nutzseiten, thereby bi-directionally positively engaged with each other that extend inserted filler of foam plastic over the border between two adjacent elements away.

From the DE 20 2009 010 716 U1 For example, there is known a concreting panel which has two edge beams and a plurality of plastic or metal elements leading from edge beam to edge beam. The plastic elements have plastic stiffening ribs. The metal elements have side walls and snap bars, which lead obliquely from the formwork to the respective side wall and optimize the dissipation of forces into the edge beams.

The term "scaffold" is intended to have a very broad meaning in this application. For the purposes of this application, a scaffold is a device that allows people or loads to be located in a location that is remote from the location of the base of the scaffolding, with the weight of the person (s) and / or load ( en) is forwarded by means of the scaffold from the whereabouts to the location of the scaffold base. In many cases, the abode referred to is at a higher level than the location of the scaffold base; however, the location may also be laterally spaced or at a lower level than the location of the scaffold base. One, also in the invention, particularly frequent scaffold type is a scaffold that allows work tasks or carrying tasks or support tasks in a - sometimes considerable - height above the location of the scaffold base perform, the location of the scaffold base z. B. the ground or z. B. may be a building surface as the top of a floor ceiling. As concrete examples may be mentioned a scaffolding for constructing a concrete formwork for a bridge arch or for a tunnel ceiling, as well as a scaffold for carrying out work on the inside of a church vault, and a scaffold for carrying out manufacturing work on the underside of the wing of a large aircraft. In many cases, even according to the invention, the framework is erected parallel to a building wall, so that one can carry out work on the building wall from the framework.

However, the flooring plank according to the invention is also provided for a type of scaffold which is usually called a scaffold framework. Console scaffoldings have - usually in a number of arranged in a row - consoles, which are also commonly called scaffold consoles, which are attached to a console supporting structures and project from this. This structure may be, in particular, a building or a concreting formwork, in which case the area from which the brackets protrude is also substantially vertical, even in accordance with the invention. A particularly typical console scaffold, which is also preferred for the covering flooring according to the invention, is a so-called working and concreting platform, in which on the outside of wall formwork elements Consoles are mounted in series, on which flooring planks are mounted. On these planks people can stand or walk, which are thus laterally outside of the area where z. B. mushy concrete to be poured onto a slab formwork for the production of a concrete floor of a building. Another application scenario is that persons standing on the floorboards can install and remove shuttering anchors.

Inventive flooring planks are elements for attachment to scaffolds (in which context the word scaffold denotes the support structure of the scaffolding which is not yet complete). Floors are those elements of the complete scaffolding on which - depending on the scaffolding - people can stand or walk or other loads, such. As tools, mortar containers, bricks, can be parked. Siding boards are sometimes referred to as Gehbelag or Gehbelagdielen, which terminology comes from the fact that you can go on these elements - in contrast to the rest of the scaffold. For this application, however, the term plank flooring is preferred, to indicate that it can also be used in those cases where it is not important to walk on the plank flooring.

In this application, the term lining plank has been chosen to express that it is usually an elongated structure, which is typically narrower than long. Overall, the structure is - roughly speaking - plate-like, d. H. It has a thickness that is significantly smaller than the length and width of the floorboard. However, the claim 1 is not limited to flooring planks, in which the longitudinal members are longer than the measured transverse to the longitudinal beams floorboard width.

As a particularly simple type of flooring planks for scaffolding has taken in the past boards of suitable length, width and thickness. Boards are relatively heavy - measured by the load they can absorb - and age in particular under the influence of the weather.

Furthermore, one knows flooring planks for scaffolding, which consist of metal. With a clever design, metallic decking can be lighter than decking boards and are much more durable than decking boards.

Finally, a decking for scaffolding is known, which - with the exception of headers at the transverse ends - consists of a continuous plastic part. For this floorboard to have the required mechanical strength, it must be designed in heavy construction. Their production is complicated.

In contrast, the flooring plank according to the invention realizes a fundamentally different construction principle. When looking at the covering plank from the side where the two side members extend from left to right, the forces which occur in the region of a span (or respectively one of several spans) on the covering plank, which lead to a bending stress of the planking, essentially taken up by the longitudinal members. On the other hand, if one considers the covering plank in a front view, in which the elements mentioned in claim 1 each lead horizontally from the first side member to the second side member, the forces coming into this span on the respective element will lead to a bending stress of the element in question derived from the element in question to the two side members. The derived from the plastic elements loads are much lower than in the above-mentioned paragraph covering plank with a one piece for almost the entire plank length plastic part.

The term "outer side members" as used in the application is not intended to be limiting in that these outer side members must necessarily be located entirely at the outer edge of the covering plank. It should only be expressed that these two outer side members are each nearer to the respective edge of the lining plank than at the center line of the planking. It is thus possible that the plastic elements in each case go beyond the two outer longitudinal members to the edge end of the covering plank. This too should with the expression "elements that each lead from the first side member to the second side member" include. In one embodiment of the invention, however, it is the case that the two outer longitudinal members are positioned completely against the relevant edge ends of the covering plank, that is to say that the elements do not extend beyond the longitudinal members to the outside.

It is emphasized that the floor covering according to the invention is not limited to the fact that only two side members, namely the "outer, spaced side members" cited in claim 1, are present. In particular, when the distance between the two outer side members is relatively large or when particularly large loads are to be expected on the members, it is possible to provide one or more further side members between the "two outer, spaced side members".

The term "plastic element" as used in the application does not necessarily mean that the element must be 100% plastic (including any reinforcing means, e.g., fibers, in the plastic), although this is a viable option. Other materials may be present in minor amounts, e.g. cast-in metal bushings for holding screws.

The dimension of the elements as measured in the direction from the first outer side rail to the second outer side rail is dictated by the desired width of the decking. The dimension of the elements, measured in the direction of the longitudinal direction of the side members, can be determined according to manufacturing requirements for the element in question, and usually follows a suitable modularity to the frame. In one embodiment of the invention, the dimension of the respective element, referred to second in this paragraph, is at least 50% and at most 200% of the dimension mentioned first in this paragraph.

The bidirectionally positive engagement between each two adjacent elements causes forces, the at least one component perpendicular to the respective element-Nutzseite have to be divided to divide the forces on several elements. In other words, the load-bearing capacity of each element is supported by the load-carrying capacity of at least one neighboring element or also several neighboring elements (at least one left then and at least one right subsequently, or also several consecutive rows to the left and / or several consecutive rows to the right). The same applies to a load, for. B. the foot of a person who comes directly to two adjacent elements. In this case, at least one further element adjoining this element pair is involved in the force derivation. In addition, it is achieved by the mentioned, respective bidirectional form-fitting engagement that no grading is formed at the transition between a directly loaded element and a not directly loaded element. This is also a safety-enhancing feature.

A convenient way to create the bidirectional interlocking engagement between two adjacent elements is that one forms the respective element edges so that the two adjacent elements are moved towards each other, so as it can be put together. In this way, the assembly of the elements and thus the flooring plank designed particularly simple. Tensile forces in the longitudinal direction of the longitudinal members are not transferred at the relevant intervention site on schedule. Furthermore, it is possible-instead of or in addition-to design the bi-directional positive-locking element / element interventions in such a way that no pressure forces acting in the longitudinal direction of the side members are transmitted at the points of engagement, at least not before any further further collapsing movement takes place between adjacent elements Has. The formation of the element / element interventions can be designed such that forces which have at least one component in the direction of the extension direction of the respective element edge are respectively transmitted between the two adjacent elements.

It is favorable if, in the case of the covering plank according to the invention, the first longitudinal carrier and the second longitudinal carrier as well as, at least predominantly Part of the elements, in each case the respective two opposite edges of the elements have such a shape that, at least in terms of forces acting at right angles to the element Nutzseiten, bidirectionally positive side member / element engagement. This training perfects the power transmission from the elements to the side members.

It is possible that in the flooring plank according to the invention, which may also include at least one of the above-disclosed possible features, the elements have at their respective edges such a plastic molding that by means of this plastic molding of the positive element / element engagement and / or the form-fitting Side member / element engagement is accomplished. In other words, means by which each of the positive engagement is accomplished, each formed in plastic. These means may be formed integrally with the rest of the element. The wording reproduced in the first sentence of this paragraph does not exclude that complementary means, in particular mechanical connecting means, are provided for the completion of the respective form-fitting composite, although it is particularly favorable in the element / element engagement, if there are no complementary connecting means of Provides element to element.

In the flooring plank according to the invention, which may also contain at least one of the possibility features disclosed in the preceding text, it is possible that those elements which have two element / element engagement edges, each formed with two mutually substantially rotationally symmetric element / element engagement edges are, wherein the axis of rotational symmetry passes through the center of the useful side of the element in question and is perpendicular to this Nutzseite. In this way, it is no longer necessary to pay attention to which of the two element / element engagement edges of the element in question is connected to a neighboring element when assembling the elements and thus the covering plank. The two possible relative orientations are equally "correct" and result in the interlocking element / element engagement.

It is possible for the flooring plank according to the invention, which may also contain at least one of the possible features disclosed in the preceding text, that the respective form-fitting element / element engagement and / or the respective form-fitting side member / element engagement, at least in the respective predominant part the cases of positive engagement, is divided into a plurality of engagement points along the respective element edge. With this design, it is particularly easy to provide good shear force transmission strength at each of the points of engagement, and then the total shear force transmission strength of the particular interference is produced by the sum of the shear force transmission strengths.

It is possible in the flooring plank according to the invention, which may also contain at least one of the possible features disclosed in the preceding text, that the elements each at the edge or edges where interlocking element / element engagement takes place, a number of projections and Have gaps between the projections, wherein this series of projections and gaps and a series of projections and gaps on the respective edge of a neighboring element mesh with each other, and wherein at least the majority of the projections of these two rows is formed either such that they rest from above on counter surfaces of the neighboring element, or is such that rest on them from above mating surfaces of the neighboring element.

In the first case mentioned in the previous paragraph (projections are from above on counter surfaces of the neighboring element on) the projections of a considered element - under load from the floorboard vertically from top to bottom - claimed by the reaction Auflagerungskräfte on tears from the bottom to the top. In the second case mentioned in the preceding paragraph (on the projections are from above her counter surfaces of the neighboring element on) the projections are claimed by the mating surfaces on tears from top to bottom. In the former case, it may be so that the protrusions are visible from above in the ready assembled decking. In the second mentioned In this case, in the assembled covering plank, the projections can not be seen from above because they are covered by the mating surfaces of the neighboring element.

The embodiments described in the two preceding paragraphs with projections, each interacting either only with its underside or only with its upper surface with mating surfaces of the neighboring element, fundamentally different from configurations in which the projections, depending on whether they have a Passing on the element considered load to neighboring elements, or whether they are pressed by a coming from a neighbor element load, the projections are sometimes claimed to tear down from the bottom up or sometimes to tearing from top to bottom. In this case, the projections must be designed for load capacity from top to bottom and from bottom to top, whereas the previously described possible execution of the invention requires a design only in a vertical load direction. Such an element can be better designed to cope with the burden and is manufacturing technology cheaper.

It is possible for the covering floor according to the invention, which may also contain at least one of the possible features disclosed in the preceding text, that the projections, at least for the most part, viewed in a section extending along the row of projections, each having a U-shaped configuration have opening of the U facing away from the useful side of the element. Such projections are favorable in terms of production. The required to overcome the shear stress material cross section can be displayed well.

In the flooring plank according to the invention, which may also include at least one of the possible features disclosed in the preceding text, it is possible for the elements to each have a series of spaced projections at the edges where form-fitting side member / element engagement takes place a groove of the respective longitudinal carrier engage, wherein preferably at least a portion of these projections a wall-like shape with a direction transverse to the longitudinal direction has the respective longitudinal beam aligned Wanderstreckungsebene. This training is particularly low production and allows easy representation of the required for the transmission of shear forces material cross sections.

In the flooring plank according to the invention, which may also contain at least one of the possible features disclosed in the preceding text, it is possible that the elements are each releasably connected to the first side member and the second side member, preferably by means of screws and / or rivets. In this way, not only the assembly of the planking in the simplest way possible. Rather, even already used flooring planks can be easily disassembled (recycling!) And / or repaired. Conversion to shorter flooring planks and further use of elements in other flooring planks are readily possible.

In the flooring plank according to the invention, which may also contain at least one of the possible features disclosed in the preceding text, it is possible that the elements are injection-molded parts. The elements, whether injection molded or not, can have - in addition to the stiffening tubes on the back - stiffening ribs on the back and / or a slip-resistant uneven design on the useful side. Since in the invention, the covering plank contains a plurality of elements, each element is considerably smaller than the plastic body of the above-mentioned, known plastic covering plank. The elements present in the covering flooring according to the invention can therefore be produced much less complicated and cheaper. In particular, the training as a plastic injection molded part allows production on injection molding machines with a common size of the production forms. Injection molding allows the molding of desired molded part details cost directly in the injection mold.

The stiffening tubes and / or the said stiffening ribs and / or said non-slip uneven design on the useful side can be molded in a simple manner during injection molding.

• Das betreffende Versteifungsrohr hat einen rechteckigen oder einen quadratischen Querschnitt;
• das betreffende Versteifungsrohr hat eine Rückwand (als von der Nutzseite entferntere Versteifungsrohr-Begrenzung), die sich zwischen zwei benachbarten Versteifungsrippen oder zwischen den Enden zweier benachbarter Versteifungsrippen erstreckt;
• das betreffende Versteifungsrohr hat eine Rückwand (als von der Nutzseite entferntere Versteifungsrohr-Begrenzung), die im Querschnitt betrachtet einfach gewölbt oder in Mehrfach-Wellung oder als Einfach-Zickzack oder als Mehrfach-Zickzack verläuft;
• das betreffende Versteifungsrohr hat mindestens an einer Seite ein weiteres Versteifungsrohr unmittelbar neben sich;
• das betreffende Versteifungsrohr hat kein weiteres Versteifungsrohr unmittelbar neben sich;
• alle Versteifungsrohre des betreffenden Elements bilden zusammen eine Versteifungsrohr-Anordnung seitlich (unmittelbar) aneinander angrenzender Versteifungsrohre;
• die Längsabmessung des betreffenden Versteifungsrohrs entspricht im wesentlichen dem lichten Abstand der Längsträger oder ist kleiner.

At least one of the stiffening tubes, or all stiffening tubes, may have one or more of the following more specific features:

• The stiffening tube in question has a rectangular or a square cross-section;
• the stiffening tube in question has a rear wall (as a more distant from the Nutzseite stiffening tube boundary) extending between two adjacent stiffening ribs or between the ends of two adjacent stiffening ribs;
• the stiffening tube in question has a back wall (as a more distant from the Nutzseite stiffening tube boundary), viewed in cross-section simply curved or in multiple corrugation or as a single zigzag or as a multiple zigzag;
• the stiffening tube in question has at least on one side a further stiffening tube immediately next to it;
• the stiffening tube in question has no further stiffening tube immediately next to it;
• all stiffening tubes of the element concerned together form a stiffening tube arrangement of laterally (directly) adjoining stiffening tubes;
• the longitudinal dimension of the relevant stiffening tube substantially corresponds to the clear distance of the longitudinal members or is smaller.

At this point, it is emphasized that the elements used in the covering flooring according to the invention can be made of fiber-reinforced plastic. The execution as an injection molded part is possible with fiber-reinforced plastic.

In the flooring plank according to the invention, which may contain at least one of the possible features disclosed in the preceding text, it is possible that those elements which have two element / element engaging edges have, are equal to each other. This simplifies manufacture, assembly, storage, repair etc.

In the flooring plank according to the invention, which may also contain at least one of the possible features disclosed in the preceding text, it is possible that at least two connection carriers are present, which are connected to the first side member and the second side member, preferably releasably, and for a Attachment of the planking are formed on a scaffold. The at least two connection carriers are intended to dissipate the forces or loads, which are introduced via the elements, ultimately to the framework or the scaffold consoles in the state installed in the scaffold or in the condition of the screed brackets attached to the scaffold consoles , The at least two connection carrier can be made of metal.

The outer side members and the connection carrier may be made of metal. For reasons of weight, particularly suitable metals for the two outer side members are aluminum and aluminum alloys, whereas for the connection supports, the best option is steel, since at times very high loads can add up. In both cases, these may be extruded, rolled or canted profiles.

It is emphasized that in this application the term "connection carrier" is to be understood functionally broad. The relevant connection carrier can also be realized by a meaningful thick sheet metal or a folded sheet metal.

The at least two connection carrier can be designed so that they allow the attachment of the covering plank to cantilever frame consoles. The at least two connection carriers can be provided on the underside of the covering plank.

Alternatively, at the transverse ends of the covering plank in each case a connection carrier may be present, which is formed for a Auflagerung of the relevant flooring planking on a transverse to the longitudinal direction of the covering plank extending scaffold support, said connection support are preferably designed in such a way that can be stored on this framework carrier transverse ends of two flush-fitting flooring planks. The latter can be z. B. realize that each of the connection carrier has a number of spaced support claws, wherein the support claws of the connection carrier of the aligned subsequent flooring plank fit into the gaps between the support claws of the considered flooring plank.

In the flooring plank according to the invention, which may also contain at least one of the possible features disclosed in the preceding text, it is possible that it is at least 0.5 m, preferably at least 1 m, long and at least 25 cm, preferably at least 32 cm wide , If very wide coverings are desired in a scaffold or a console scaffold, it is also possible to attach two or even more scouring boards according to the invention next to one another, so that their widths add up.

Another object of the invention is a scaffold, characterized in that it contains several flooring planks of the disclosed in this application embodiment.

Fig. 1

eine Belagdiele in perspektivischer Explosionsdarstellung;

Fig. 2

die Belagdiele von Fig. 1 in perspektivischer Darstellung, wobei die Bestandteile der Belagdiele jetzt zusammengebaut sind;

Fig. 3

die Belagdiele von Fig. 2 in perspektivischer Darstellung, wobei jetzt eine nicht erfindungsgemäße Rückseite der Belagdiele sichtbar ist;

Fig. 4

ein Element der Belagdiele von Fig. 1 bis 3 in einer Draufsicht auf die Nutzseite, wobei Fig. 4A ein Normal-Element und Fig. 4B ein End-Element zeigt;

Fig. 5

ein Element der Belagdiele von Fig. 1 bis 3, jetzt in einer Draufsicht auf die nicht erfindungsgemäße Rückseite, wobei Fig. 5A ein Normal-Element und Fig. 5B ein End-Element zeigt;

Fig. 6

eine alternative Ausführung eines Elements einer Belagdiele, in perspektivischer Darstellung;

Fig. 7

die Belagdiele von Fig. 1 bis 3, angebracht an einem Wandschalungsmodul, in perspektivischer Darstellung mit sichtbarer Nutzseite;

Fig. 8

die angebrachte Belagdiele von Fig. 7, in perspektivischer Darstellung mit sichtbarer, nicht erfindungsgemäßer Rückseite;

Fig. 9

die angebrachte Belagdiele von Fig. 7 und 8, in perspektivischer Darstellung mit sichtbarer Nutzseite, wobei die Blickrichtung jetzt auf die Nutzseite des Wandschalungsmoduls gerichtet ist;

Fig. 10

eine alternative Ausführung einer Belagdiele in perspektivischer Darstellung mit sichtbarer Nutzseite;

Fig. 11

eine alternative Ausführung eines Elements einer Belagdiele, in perspektivischer Darstellung mit sichtbarer, erfindungsgemäßer Rückseite.

The invention will be explained in more detail with reference to exemplary embodiments illustrated in the drawings. It shows:

Fig. 1

a flooring plank in perspective exploded view;

Fig. 2

the flooring plank of Fig. 1 in perspective, wherein the components of the flooring plank are now assembled;

Fig. 3

the flooring plank of Fig. 2 in a perspective view, now a non-inventive back of the flooring plank is visible;

Fig. 4

an element of the covering plank of Fig. 1 to 3 in a plan view of the useful side, wherein Fig. 4A a normal element and Fig. 4B shows an end element;

Fig. 5

an element of the covering plank of Fig. 1 to 3 , Now in a plan view of the back not according to the invention, wherein Fig. 5A a normal element and Fig. 5B shows an end element;

Fig. 6

an alternative embodiment of an element of a covering plank, in perspective view;

Fig. 7

the flooring plank of Fig. 1 to 3 , attached to a wall formwork module, in perspective view with visible Nutzseite;

Fig. 8

the attached plank of Fig. 7 , in perspective view with visible, non-inventive back;

Fig. 9

the attached plank of Fig. 7 and 8th , in perspective view with visible Nutzseite, the viewing direction is now directed to the useful side of the wall formwork module;

Fig. 10

an alternative embodiment of a covering plank in perspective view with visible Nutzseite;

Fig. 11

an alternative embodiment of an element of a covering plank, in perspective view with visible, inventive back.

In the Fig. 1 Planking 2 shown has as main components: two edge support 4, four elements 6 and two connection carrier 8. Die Fig. 1 can also be viewed as a representation of these main components before assembling them.

The assembled state of the covering 2 can be seen in Fig. 2 (visible user page) and Fig. 3 (visible back side). Each of the two side rails 4 in this embodiment has a cross-section like a double-T beam and, in this embodiment, is an extruded profile of aluminum or an aluminum alloy.

The positioned at the two ends of the covering plank 2 elements 6 are formed equal to each other, but mounted in mirror image in the covering plank 2. The two positioned between the end elements 6 elements 6 are formed equal to each other. The difference between the end elements 6 and the remaining normal elements 6 will be described in more detail below.

First, referring to Fig. 1 to 5 described an element 6, which is not end element 6:

The element 6 has the overall shape of a - in plan view of the useful side 10 or on the back 12 substantially rectangular - plate whose thickness is much smaller than the first dimension 14 and the second dimension 16 (s. Fig. 4A ) of the element 6. The second dimension 16 lies in a direction parallel to the longitudinal direction of the longitudinal members 4. In the illustrated embodiment, the second dimension 16 is about 90% of the size of the first dimension 14. The aspect ratio between the The second dimension 16 and the first dimension 14 may be varied quite freely within reasonable design constraints.

At this point it is emphasized that FIGS. 4A and 4B the real appearance of the relevant element 6 in plan view of the Nutzseite 10 play. You can see a variety of elevations 18, each having the shape of a relatively short, straight line. The elevations 18 are arranged overall in the form of straight, broken lines 20, each extending at 45 ° relative to the edges of the element. There is a first set of straight, broken lines and at right angles a second set of straight, broken lines. The surveys 18 create an overall uneven, anti-slip profiling of the useful side 10 of the relevant element. 6

Both FIGS. 1 . 2 . 6 . 7 . 9 . 10 the elevations 18 are omitted for the sake of drawing simplification. One must also think of the elevations 18 in these drawings. It should be noted, however, that even elements 6 without elevations 18 or without the formation of a slip-resistant useful side are according to the invention.

In the FIGS. 1 . 2 . 4A, 4B . 5A, 5B . 6 . 7 . 9 it can be seen that, distributed in a checkerboard pattern on the useful side 10 of the relevant element 6-in this exemplary embodiment-there are 12 holes 22 which pass through the material of the element 6 from the useful side 10. These holes 22 serve the drainage. They are in Fig. 10 omitted only for the sake of drawing simplification.

Each element 6 is a one-piece injection molded part. In each of the elements 6, which are not an end member, one can constructively a Nutzseiten wall 24; 10 rear stiffening ribs 26 extending on the back side of the utility side wall 24 parallel to the first dimension 14; some short stiffening ribs 28 extending at the rear of the utility side wall 24 in the direction of the second dimension 16; two edge formations 30 of the first type, which are provided for bidirectionally positive element / element engagement; two edge formations 32 of the second type, which are provided for bidirectionally form-fitting side members / element engagement; and two boundary ribs 54 that extend along the edge formations 32 of the second type. Most clearly one sees this structure in the Fig. 4A and 5A ,

In Fig. 3 it can be seen that the stiffening ribs 26 in the vicinity of the longitudinal members 4 have a lower height (measured at right angles to the useful side 10) and that the rib height in a large central region is so great that the relevant element 6, taken as a whole, has substantially the same thickness as each of the side members 4 (see, in particular Fig. 3 ).

The edge formation 30 of the first type includes four regular width projections b and a projection 36 of approximately half width b / 2, these projections 34 and 36 being lined up along the respective element edge at a mutual distance of width a. Thus, there is a gap 38 between two adjacent projections 34 and 34/36, respectively. The gap width a is slightly larger than the projection width b, so that a projection 34 of an adjacent element 6 fits into each of the gaps 38, as can be seen in FIG Fig. 3 and in synopsis with Figs. 5A and 5B sees. Each of the projections 34, 36 has a top wall 40 which extends parallel to the payload side 10 of the element 6 (see FIG. Fig. 1 ), and at the back of the upper wall 40 a plurality of stiffening ribs 42. The upper wall 40 is located approximately at the level of half the thickness of the element. 6

In each of the gaps 38, there is a pocket 44, which occupies approximately the lower (of the Nutzseite 10 more distant) half of the thickness of the element 6. Towards the top, ie toward the useful side 10 of the element, the respective pocket 44 is delimited by the lower edges of ribs 46 which extend downwards from the rear side of the useful side wall 24. Due to the described geometry of the projections 34, the gaps 38 and the pockets 44 adjacent elements 6 - with a relative direction of movement, which is in the same direction as the longitudinal extension of the side members 4 - moved towards each other and finally "put together". In this case, each projection 34 or 36 passes into a pocket 44. If now comes from the useful side 10 ago a load on a viewed element 6, z. B. the loaded with a part of the body weight foot of a person or z. As a tool such as a used in concreting concrete ceilings internal vibrator, this load is removed to the side members 4. At this ablation but also the neighboring element or the two adjacent elements of the considered element 6 involved, because the underside (n) of one or more pockets 44 (depending on the extent of deflection of the considered element 6, to which it without the support through the neighboring elements 6 would) on one or more upper sides 40 of the projections 34 of the local neighboring element 6 are supported. The already mentioned lower edges of the above the pockets 44 respectively located ribs 46 thus represent a counter surface, which is supported from above on a projection 34 of the adjacent element 6.

The described takes place in the reverse manner, when a neighboring element of a considered element 6 is loaded. The neighboring element is supported by one or more projections 34 of the considered element 6 on the observed element 6. From the described and from the FIGS. 1 to 5B shows that you see nothing of the edge formations 30 of the first type in assembled decking 2. The positive, with respect to acting at right angles to the element-Nutzseiten 10 bidirectionally effective teeth of the two edges 30 adjacent elements 6 takes place below the visible from above the useful side wall 24 from.

The two edge formations 30 of the first type are rotationally symmetrical in the element 6, the axis of rotation passing through the center of the useful side 10 of the element 6 and being at right angles to this useful side 10. The position of the axis of rotation is in Fig. 5A marked with a small cross 48. This results in that upon rotation of the element 6 by 180 ° about the axis of rotation 48, the edge formation 30 of the first type, which is initially at in Fig. 5A left edge 30, in which one edge formation 30 merges, which one in Fig. 5A looks at the right edge of the drawing. The half-width projection 36, which is lower left at the left edge 30, comes to lie on the right edge 30 to the upper right. This rotationally symmetric configuration has the effect of being able to "infect" a contemplated element 6 on the side of a first-type edge 30 of a neighboring element 6, irrespective of which of the two first-type adjacent edges 30 is used therefor. One therefore does not have to pay attention to the mounting with which edge 30 of the first type one "infects" the neighboring element 6.

Since the two adjacent edge formations 30 of the first type of two adjacent elements 6 engage in a comb-like manner, an engagement is created here which is bidirectionally positive-locking also with respect to forces which have the same orientation as the edges 30.

An in Fig. 5B drawn end element 6 differs from that in Fig. 5A illustrated normal element 6 in that only one edge 30 of the first type with the projections 34, 36 and the gaps 38 and the pockets 44 is formed, as described, whereas the opposite edge 50 is simply formed as a rib extending from edge 32 of the second type extends to edge 32 of the second type. Because of the described rotational symmetry of the normal elements 6, the two end elements can be made the same. This in Fig. 5B drawn end element 6 can be rotated by 180 ° about the drawn axis 48 and then used at the other end of the covering plank 2 as the end element 6.

The edge formation 32 of the second type will now be described. This is always the same for all normal elements 6 and for the two end elements 6.

Each edge formation 32 of the second type includes 10 protrusions 52 which are distributed over the length of the respective edge 32 at a mutual distance, wherein a part of the distances are equal to each other, but also partially smaller distances are present. Each projection 52 has substantially the shape of a wall whose plane is perpendicular to the useful side 10 and perpendicular to the longitudinal extent of the respective longitudinal member 4. The projections 52 sit in places where they each form an extension of a rib 26 of the element. At the roots of the projections 52 is a common boundary rib 54, which is aligned in the same direction as the edge 32. If one looks at the projections 52 with a viewing direction which is parallel to the longitudinal extension direction of the local edge carrier 4, it can be seen that the projections 52 have such a course in each case of their edge that the projections 52 each in a groove or the U-shaped receiving space of a half of the double-T-profile of the respective longitudinal member 4 fit.

It will further be seen that at four locations per edge 32, two adjacent protrusions 52 are connected by a short stiffening rib 55 lying in a plane parallel to the useful side wall 24.

In four of the projections 52 per edge 32 training is made with a central screw 56. Each of the elements 6 is releasably secured by four screws 58 on the one longitudinal member 4 and four screws 58 on the other longitudinal member 4. By means of the projections 52, which engage in the mentioned receiving space of the relevant longitudinal member 4, a force acting at right angles to the element Nutzseiten 10 forces bidirectional positive engagement is created.

Especially clear in Fig. 1 , bottom left, you can see one of the two Anschlussträger 8. Especially clearly seen in Fig. 3 in that the terminating support 8 is screwed in each case from the rear side to the two longitudinal members 4 and to an end element 6 by means of screws 60. The two connection carrier 8 are formed equal to each other.

Each of the connection carrier 8 is pressed from sheet steel and has in each case more to the terminal support end toward a section 62 with - roughly speaking - U-shaped cross-section. Each connection carrier 8 is provided at one of its two ends with a bolt 64 which extends in the direction of the longitudinal extension of the connection carrier 8 and - protrudes with assembled plank 2 - with a portion of its length beyond the local side member 4.

In Fig. 6 an end element 6 is shown with an alternative embodiment of the rim 30 of the first type. Here, the projections 34 and the gaps 38 are no longer in a "lower floor", which is located a distance away from the Nutzseite 10, formed, but as edge profiling of Nutzseiten-wall 24. The gaps 38 jump a bit further to the middle Uses Wall 24 area back as it the position of a limiting rib 66 corresponds, which runs there in the same direction as the edge 30. In this way, the projections 34 of the adjacent edge 30 of an adjacent element 6 can be placed on the exposed upper edge of the limiting rib 66. The same applies vice versa for the projections 34 of in Fig. 6 These can with their bottom 68 from above on counter surfaces, ie upper edge portions of the adjacent boundary rib 66 of the adjacent element, rest when the two adjacent elements are mated with a Zusammensteckrichtung parallel to the longitudinal extent of the side members 4. As a result, a force acting at right angles to the element-Nutzseiten 10 forces bidirectional positive engagement of the two adjacent elements is created. In the case of training according to Fig. 6 the serration profiling is visible at the edges 30 of the first type when looking at the useful sides 10 of the elements.

By the FIGS. 7 . 8, 9 It is illustrated how to apply the covering plank 2 described with reference to FIGS. 1 to 5 to a wall formwork module of a concrete wall formwork. Drawn is a so-called frame formwork module 70, which consists essentially of a skeleton of metal beams 72 and two attached thereto form skin panels 74 on the useful side of the frame formwork module 70. At the support frame 72 are two spaced apart - roughly speaking - triangular scaffold brackets 76 attached. On the upper, horizontal arm 78 of each bracket 76 is one of the two connection carrier 8 of the covering plank 6 is placed. In each case, a partial length of the bolt 64 described above has been inserted into a matching bush-like channel on the respective console 76. One of the U-shaped sections 62 of the considered connection carrier 8 is equipped with undercuts 80, in which transverse bolts are received, which are provided on the horizontal leg 78 of the bracket 76. In addition, it is ensured by means not visible in the drawing that the covering plank 2 can not be moved unintentionally in the direction away from the wall formwork module 70 away.

In the illustrated embodiment, the wall formwork module z. B. 2.7 m high and 2.4 m wide, and the flooring plank is 2.38 m long and 0.73 m wide.
At the in Fig. 10 drawn, alternative embodiment of a covering plank 2, a connection carrier 84 are provided with two support brackets 82 instead of the connection carrier 8 at each end of the covering plank 2, wherein the connection carrier 84 are in turn attached to the two longitudinal members 4. Each of the two connection carrier 84 is made of strong, folded sheet metal, wherein it is possible to form the support claws 82 respectively from a notched sheet metal area. For this purpose, however, there are also alternative production methods, eg with support claws 82 fastened to the actual connection carrier 84.
In Fig. 10 are also all the details of the elements and the screws 58 are not shown, as they have already been described in connection with the preceding embodiments.

In the Fig. 11 designated embodiment of the invention differs from the in Fig. 1 to 5B illustrated embodiments in that the element 6 on its back instead of the 10 stiffening ribs 26 which extend parallel to the edges 30, four stiffening tubes 86 and an end stiffening rib 88 has. The stiffening tubes 86 are each hollow and have a rectangular cross-section. In the case of the stiffening tubes 86, it could also be said that in each case two adjacent stiffening ribs are joined together by a rear wall extending parallel to the useful side 10.
Alternatively, one could provide eight stiffening tubes 86 immediately adjacent to one another laterally so that the element 2 is almost completely closed at the rear. In both cases, the stiffening tubes 86 may have a different cross-section than the drawn rectangular cross-section, in particular an arcuate, wavy or zigzag-shaped extending rear wall as far away from its user side boundary.

This in Fig. 11 drawn element 8 is an end element 6. If one imagines the projections 84, the gaps 38 and the pockets 44, which are seen in the edge formation 30 of the first type in the drawing right-bottom, also complements the opposite, parallel edge , one has in front of how a normal element 6 formed with stiffening tubes 86 looks like.

Also in Fig. 11 Drawn element 6 is an injection molded part. This element 6 is more rigid than the elements 6 according to the Fig. 1 to 5B ,

Claims (17)

1. A floorboard (2) for scaffoldings, comprising the following features:

   (a) two outer, spaced apart longitudinal beams (4), preferably of metal;

   (b) a plurality of juxtaposed, substantially plate-like and rectangular elements (6) of plastics material each extending from the first longitudinal beam (4) to the second longitudinal beam (4);

   (c) the elements (6) being respectively connected to the first longitudinal beam (4) and the second longitudinal beam;

   (d) and respectively adjacent elements (6), at least with respect to forces acting at right angles to the element useful sides (10), being in bidirectionally positive engagement with each other,

   characterised in that the elements (6) comprise rear-side reinforcing tubes (86) having their longitudinal extension running in the direction from the first longitudinal beam (4) to the second longitudinal beam (4).
2. The floorboard (2) according to claim 1,
   characterised in that the first longitudinal beam (4) and the second longitudinal beam (4) and, at least with the major part of the elements (6), the respective two opposite edges of the elements (6) have such a shape that at least with respect to forces acting at right angles to the element useful sides (10), there is established a bidirectionally positive longitudinal beam-to-element engagement.
3. The floorboard (2) according to claim 1 or 2,
   characterised in that the elements (6), at the respective edges thereof, have such a plastics material shape that this plastics material shape effects the positive element-to-element engagement and/or the positive longitudinal beam-to-element engagement.
4. The floorboard (2) according to any one of claims 1 to 3,
   characterised in that those elements (6) which have two element-to-element engagement edges are each formed with two element-to-element engagement edges that are substantially rotationally symmetrical to each other, with the axis of rotational symmetry extending through the center of the useful side (10) of the respective element (6) and being perpendicular to this useful side (10).
5. The floorboard (2) according to any one of claims 1 to 4,
   characterised in that the respective positive element-to-element engagement and/or the respective positive longitudinal beam-to-element engagement, at least in the respective major part of the cases of positive engagement, is distributed to a plurality of engagement locations along the respective element edge.
6. The floorboard (2) according to claim 5,
   characterised in that the elements (6), at the respective edge or edges where positive element-to-element engagement takes place, comprise a series of projections (34) and gaps (38) between the projections (34), with said series of projections (34) and gaps (38) and a series of projections (34) and gaps (38) at the respective edge of a neighboring element (6) engaging each other in comb-like manner, and wherein at least with the major part of the projections (34) of these two series the configuration is either such that they rest on counter-surfaces of the neighboring element (6) from above, or such that counter-surfaces of the neighboring element (6) rest on the same from above.
7. The floorboard (2) according to claim 6,
   characterised in that at least the major part of the projections (34), as viewed in a section extending along the series of projections, each have a U-shaped configuration with an opening of the U shape facing away from the useful side (10) of the element (6).
8. The floorboard (2) according to any one of claims 5 to 7,
   characterised in that the elements (6), at the respective edges where positive longitudinal beam-to-element engagement takes place, have a series of spaced apart projections (52) which engage in a channel of the respective longitudinal beam (4), wherein preferably at least a part of these projections (52) have a wall-like shape with a wall extension plane being oriented transversely with respect to the longitudinal direction of extension of the respective longitudinal beam (4).
9. The floorboard (2) according to any one of claims 1 to 8,
   characterised in that the elements (6) are each detachably connected to the first longitudinal beam (4) and the second longitudinal beam (4), preferably by means of screws (58) and/or rivets.
10. The floorboard (2) according to any one of claims 1 to 9,
    characterised in that the elements (6) are injection-molded parts.
11. The floorboard (2) according to any one of claims 1 to 10,
    characterised in that the elements (6) comprise rear-side reinforcing ribs (26; 28) and/or a non-slip, uneven design (18) on the useful side (10).
12. The floorboard (2) according to any one of claims 1 to 11,
    characterised in that those elements (6) which have two element-to-element engagement edges are of mutually like design.
13. The floorboard (2) according to any one of claims 1 to 12,
    characterised in that there are provided at least two connecting beams (8) which are, preferably detachably, connected to the first longitudinal beam (4) and the second longitudinal beam (4) and which are designed for attachment of the floorboard (2) to a scaffolding or scaffolding consoles (76).
14. The floorboard (2) according to claim 13,
    characterised in that there are provided at least two connecting beams (8) which are designed for attachment of the floorboard (2) to cantilevered scaffolding consoles (76).
15. The floorboard (2) according to claim 13,
    characterised in that a connecting beam (84) is provided at the transverse ends each of the floorboard (2), which connecting beam (84) is designed for support of the respective floorboard end on a scaffolding beam extending transversely to the longitudinal direction of extension of the floorboard (2), and which connecting beam (84) is preferably designed such that the transverse ends of two mutually aligned and adjacent floorboards (2) can be supported on this scaffolding beam.
16. The floorboard (2) according to any one of claims 1 to 15,
    characterised in that it has a length of at least 0.5 m, preferably at least 1 m, and a width of at least 25 cm, preferably at least 32 cm.
17. A scaffolding,
    characterised in that it comprises a plurality of floorboards (2) according to any one of claims 1 to 16.

Images