EP3147424B1 - Grid support and grid support system, in particular for universal use within a known work and protection frame - Google Patents

Description

TECHNICAL AREA

The present invention relates to a lattice girder for compatible assembly within a modular scaffolding system, which has a grid dimension with a truss-like support structure, in particular made of metal or aluminum, with a longitudinally extending upper flange, a longitudinally extending lower flange, vertical posts, their opposite end regions to the upper flange and Connected to the lower flange, in particular welded on, are diagonals, which are connected, in particular welded, to the upper flange and to the lower flange between the vertical posts at opposite end regions, the upper flange and / or the lower flange are open to the outside on the top or bottom, has a continuous undercut groove, via which further components of a work and protective scaffold can be connected in any position in the longitudinal direction by means of connection units.

The present invention further relates to a modular lattice girder system consisting of lattice girders that are used in a known work and protective scaffold that can be used universally in an existing work and protective scaffold.

STATE OF THE ART

Lattice girders or lattice girder systems are used for large spans, for example with scaffolding, roofs, podiums or as a substructure or as a suspension for hanging scaffolding or as roof structures for keder roofs. Standard lattice girders are for example from the catalog " LAYHER SCAFFOLDING ACCESSORIES, page 8, edition 04.2014 "Such lattice girders are made of steel or aluminum and are mainly used for stiffening scaffolding or for short bridges. Upper and lower chords are generally made from round tubes without a groove on the market. The diagonal and vertical struts are mostly made of rectangular profiles, round tube profiles or oval profiles that do not have any connection units. This means that the bracing or lateral stabilization takes place via pipes that are connected with couplings. The installation of accessories is only possible if the component to be connected has a coupling connection. Corners or complex structures cannot be created with this It is not possible to install such lattice girders in the middle of a scaffold bay, since the couplings that are then absolutely necessary would have to be installed outside the scaffold bay.

From the Internet publication "http://www.dessa.co.uk/allproducts/aluminiumbeams/", lattice girders made of aluminum are known which, in addition to an upper chord, a lower chord and vertical posts, also contain intersecting diagonals. Such lattice girders are mainly used in suspended scaffolding and long bridges. The upper and lower straps are designed without a groove and the diagonal and vertical struts are made of round tubes that have no connection units. The bracing of the lattice girders with each other within the supporting structure is carried out via pipes and couplings or via components with a snap claw. The installation of accessories is only possible if this component has a coupling connection. Corners or spatial, complex structures cannot be built with such lattice girders. It is not possible to install the lattice girders within a scaffold bay, as these would have to be installed with couplings outside the scaffold bay. Roofs can be built using inclined lattice girders.

Another lattice girder construction is disclosed at the Internet address "http://www.peri.de/ww/de/index.cfm". A steel lattice girder is used primarily in roof structures or for long bridges. The top and bottom chords are designed without a groove and the diagonal struts are made as a rectangular profile. It is not possible to connect accessories with a coupling connection due to this type of profile. The vertical struts consist of a round tube with perforated disks. The bracing is carried out using transoms and diagonals. Corners or complex spatial structures cannot be built with such a lattice girder construction. Roofs can be built on the basis of inclined lattice girders of this type.

From the catalogue " LAYHER PROTECTION SYSTEMS, page 32, edition 04.2014 "A lattice girder made of steel is known, which is only used for roof constructions. The upper and lower chord are made of round tubes without a groove. The diagonal and vertical struts are made of round tube profiles that have no molded connection units. The lattice girders are stiffened with each other Via pipes and couplings or components with a snap-in claw. The installation of accessory components is only possible if this component has a coupling connection. Corners or complex structures cannot be built with it. It is not possible to install such lattice girders in the middle of a scaffold bay, as these have couplings Roofs with different inclinations can be mounted with such lattice girders. In order to be able to mount light cassettes on the lattice girders, an essentially U-shaped profile is created by a com plexe, the upper chord comprehensive mount on the lattice girder.

Furthermore, from the prospectus " Layher all-round scaffolding catalog and price list, page 46, edition 04.2014 "a bridge girder known of a lattice girder system based on individual parts (posts, crossbars, Diagonals, connecting means etc.) and which is used for extremely long bridges and highly stressed scaffolding. The top and bottom chords consist of a rectangular profile without a groove. The diagonal strut consists of a Dywidag rod. The vertical posts consist of a rectangular profile with wedge heads, which can be connected to the perforated disks of a modular scaffolding, in particular Layher Allround scaffolding. It is not possible to connect accessories with a coupling connection to these profiles. Connection units in the form of perforated disks are not available. Corners or complex structures cannot be built with such bridge girders. Installation in the middle of a scaffold bay is not possible because the bridge girder would have to be connected outside the system dimensions. Roofs cannot be built with such beams.

The US 5 240 089 A discloses a lattice girder with an upper chord, a lower chord, vertical posts and diagonals. The upper chord and the lower chord have a continuous undercut groove that is open to the outside on the top and bottom. The verticals and diagonals are screwed to the upper or lower flange via gusset plates. The lattice girders are each connected in their end region between vertical supports arranged on spindles. The supports protrude above the height of the lattice girder, with a support structure consisting of longitudinal and transverse girders for receiving a covering being provided on the upper side of the supports.

The EP 1 111 151 A2 discloses a lattice girder structure with two lattice girders, each arranged in parallel support planes, each having an upper chord and a lower chord, which are connected to one another via vertical bars. The two lattice girders are connected to each other via spatially crossing diagonals. The top chords and the bottom chords each have a continuous groove that is open at the top and bottom.

The DE 199 38 970 A1 discloses a support, in particular for trade fair and shop construction, which is designed as a lattice support with an upper chord, a lower chord, vertical, rising and falling diagonals. The top flange and the bottom flange have a groove.

The WO 2015/020662 A1 discloses a lattice girder with an upper chord, a lower chord, end verticals and rising and falling diagonals between the upper chord and lower chord. The upper chord is made up of several parts and consists of two parallel spaced L-profiles, on which a flat rectangular profile is arranged, on the top of which a profile bar element with an undercut groove is connected. Additional connection elements can be connected via slot nuts, via which additional components can be connected to the lattice girder.

PRESENTATION OF THE INVENTION

Based on the prior art mentioned, the present invention is based on the object or the technical problem of providing a lattice girder and a modular lattice girder system which can be produced simply and inexpensively, universally and variably within a known work and protective structure, in particular the Layher-Allround modular scaffolding, can be used, is compatible with this scaffolding system, has a high load capacity, can be used within an existing modular scaffolding to scaffold a wide variety of building geometries, has large spans and can be used as a binder construction for roofs with large spans.

The lattice girder according to the invention is given by the features of independent claim 1. Advantageous refinements and developments of the lattice girder according to the invention are given by claims 1 to 11 and 12 which are directly or indirectly dependent on independent claim 1.

The modular lattice girder system according to the invention is given by the features of claim 12. Advantageous refinements and developments of this modular lattice girder system are given by claims 13 to 20, which are directly or indirectly dependent on claim 12.

A scaffold construction according to the invention consisting of the components of a modular scaffold in conjunction with the lattice girders according to the invention or the lattice girder system according to the invention is given by the features of claim 21.

The lattice girder according to the invention is accordingly characterized in that the lattice girder has at least one, in particular several, vertical posts with a plurality of connection elements for connecting further scaffolding components, the lattice girder has one in the end region of the lattice girder or two in the opposite end regions of the lattice girder Vertical post without connecting elements, the distance in the longitudinal direction of the lattice girder between a vertical post with connecting elements and the front end of the lattice girder corresponds to half a grid dimension of the module frame.

In a particularly advantageous manner, the upper chord / lower chord is designed as a hollow profile, in particular a tubular and rectangular profile. According to a particularly preferred embodiment, the undercut groove is polygonal, in particular rectangular or dovetail-shaped or part-circular with respect to its inner circumferential contour.

The compatibility with existing modular scaffolding, within which the lattice girder according to the invention can be installed, is increased according to the invention in that the distance in the longitudinal direction between vertical posts with connecting elements, that is to say the grid dimension, corresponds to half, single or multiple of a grid dimension of a module scaffolding.

According to a particularly advantageous embodiment, the variable or different length of the lattice girder to be used in each individual case can be implemented in a particularly simple manner in that, between two vertical posts in the longitudinal direction, one or more times in each case one diagonally rising from the lower chord to the upper chord and then one from the upper chord to the lower chord falling diagonal is connected.

With regard to simple assembly, an advantageous embodiment is characterized in that at least one, in particular a plurality of, longitudinally spaced coupling recesses are provided in the end region of the upper and lower chord.

In some situations it is necessary that additional recesses have to be drilled on site in the upper chord or lower chord in order to obtain further connection options. In order to facilitate the making of such bores true to size, an advantageous embodiment is characterized in that a continuous notch open to the outside is formed in the center line (s) of the upper chord / lower chord.

With regard to the connection options within the framework of an existing modular scaffolding while guaranteeing high load capacities, it has proven to be particularly advantageous to have an end area lattice girder to be formed, which can be connected to adjoining lattice girders, this end region lattice girder being characterized in that the lattice girder has only one post with connecting elements and one post without connecting elements and a diagonal running between the posts.

A particularly advantageous embodiment of the lattice girder according to the invention, suitable for use in the manufacture of roof structures with tarpaulins, is characterized in that the upper chord / lower chord has at least one molded-in keder profile recesses arranged laterally, in particular two opposite, laterally arranged, in particular in the upper and lower side edge area . Due to the existing keder profile recesses in the upper or lower chord profile, keder roof tarpaulins can be connected in a simple manner, whereby the arrangement of the keder profile recesses in the upper and lower side edge area of the upper chord allows offset keder roof tarpaulins to be connected, so that on the one hand they are offset in height and on the other hand with an overlap in Longitudinal direction to simplify handling in manageable lengths can be retracted. The offset provides ventilation so that, for example, condensation can be counteracted.

A particularly advantageous embodiment, which enables the formation of curved trusses or trusses supporting structures, is characterized in that the upper flange and the lower flange have a locally limited / limited kink / curvature in a convex or concave shape at positions opposite in the vertical direction.

In order to be able to design complex surface structures that can be adapted to almost any geometry, a particularly preferred embodiment is characterized in that the lattice girder acts as a knot lattice girder between incoming and outgoing Lattice girders are formed, the knot lattice girder enables incoming and outgoing lattice girders to be connected in a plan view, in each case at a predetermined angle to one another, in particular at an angle of 90 °, the knot lattice carrier having a central connection post, which is seen in a plan view and in the node, which in particular has connection elements and, in each connection direction, starting from the central connection post and the top flange, has a, in particular falling, diagonal, which is connected to the bottom flange and each has a vertical post in the free end region.

In order to increase the stability, an advantageous development is characterized in that a diagonal strut is connected, in particular welded in, as a stiffening element between the upper and lower chords arranged in the longitudinal and transverse directions.

In order to enable a complex support structure made of lattice girders with lattice girders arranged in an orthogonal grid in a simple manner, a particularly advantageous embodiment is characterized in that the node lattice girder enables the connection of a first and second lattice girder element at a right angle, that is to say as L- Corner connection means is formed or the knot lattice girder enables the connection of two lattice girders running through in the longitudinal direction and one lattice girder running in the transverse direction, i.e. it is designed as a T-corner lanyard or the knot lattice girder enables the connection of two lattice girders going through in the longitudinal direction and two cross girders going through in the transverse direction, that is is designed as an intersection connecting means.

The modular lattice girder system according to the invention is characterized by modular units that can be combined with one another and that are universally compatible with a existing modular scaffolding system or the construction of a universally usable support structure enable at least two or more lattice girders and / or knot lattice girders aligned in the longitudinal direction and / or in the transverse direction according to one or more of the preceding claims, the end regions of adjoining top chords and adjoining bottom chords each by means of belt connector devices are releasably connected.

According to a particularly advantageous embodiment, which enables simple assembly while at the same time ensuring a high load-bearing capacity, it is characterized in that the belt connector devices have an outer contour / inner contour in such a way that they can be positively inserted into the inner contour of the upper and lower belts or onto the outer contour the upper and lower straps are designed to be slidable and have connection recesses which, when pushed in / pushed on, align with the coupling recesses of the upper straps or lower straps and fixing adjacent upper straps / lower straps by inserting bolt units or screw units into the connecting recesses and the coupling recesses.

In an advantageous manner, the belt connector device which can be pushed in in the longitudinal direction is designed as a hollow profile and the belt connector device which can be pushed in in the vertical direction is essentially designed as a U-profile, which connects upper and lower belts adjoining one another via connecting means.

A particularly advantageous embodiment of the lattice girder system according to the invention, which ensures the variable use of the lattice girder system within an existing scaffolding system in a simple manner, is characterized in that at least one, in particular a plurality of connection devices is connected via the groove to the upper chords and / or lower chords / are like that are designed such that further components, in particular scaffolding components, can be connected.

A structurally particularly advantageous embodiment of the connection device, which ensures economical manufacture and particularly simple handling during assembly, is characterized in that the connection device has a bearing plate with bearing plate recesses, via which sliding nuts or hammer head units are used to connect to the groove of the upper chords / lower chords and connection units are connected, in particular welded, to the bearing plate, which enable the connection of further components.

In order to ensure compatibility with an existing work and protective scaffold in a simple manner, an advantageous embodiment is characterized in that the connection units as a hollow profile, in particular a tubular profile, with or without a connecting element or with or without a pipe connector with a stop or as a hook or eyelet unit are formed.

A particularly advantageous embodiment, which ensures the connection of scaffolding floors or keder tarpaulins in a particularly simple manner, is characterized in that the connecting device is designed as a longitudinally extending connecting profile rod device which is connected on the one hand in the groove of the upper / lower flange and on the other hand Has connection options for connecting scaffolding floors or for connecting keder tarpaulin edge profiles.

With regard to the handling of the connection of keder tarpaulin tarpaulins, a particularly advantageous embodiment is characterized in that the connection device has two connection profile rod devices arranged one on top of the other in such a way that at least two connection units for keder tarpaulin edge profiles are offset in terms of height, so that Keder tarpaulin edge profiles offset in the longitudinal direction with overlap and offset in height can be connected.

The design of two connecting profile rod devices, which are spaced apart in the vertical direction, makes it possible to limit the length of the keder roof tarpaulins to be connected to a simple manageability during assembly in the case of a long roof surface, the sealing and height offset on the one hand ensuring tightness and on the other hand venting the substructure is made possible.

A particularly preferred embodiment of the lattice girder system according to the invention, which can safely and reliably cover large areas with large spans with a high load capacity, is characterized in accordance with the invention in that at least two lattice girders spaced parallel in the transverse direction or at least two spaced apart in the transverse direction each of several coupled in the longitudinal direction Lattice girders existing lattice girder device is present, wherein between the lattice girders or the lattice girder device there is a stiffening construction consisting of crossbars and transverse diagonals, the end area of which is connected to the connecting elements of the vertical posts, so that a truss structure in the plane of the upper and lower chords and in the plane in the transverse direction of adjacent vertical posts.

A scaffold construction according to the invention consisting of the components of a work and protective scaffold such as vertical, horizontal and / or diagonal scaffold elements and scaffold coverings is characterized according to a particularly advantageous further development in that the scaffold posts of the work and protective scaffold on top chords and / or bottom chords of lattice girders after one or more of claims 1 to 14 or to a lattice girder system according to one or more of claims 15 to 23, in particular such that the vertical support elements of the working and Protective scaffold are aligned with the vertical posts of the lattice girders or connected with an offset in the longitudinal direction.

With the lattice girder according to the invention or the modular lattice girder system, which preferably consists of aluminum, large spans can be implemented in the case of scaffolding, roofs with a large span can be created or highly loaded podiums can be created. According to the state of the art, previously different systems were required for these different applications. Due to the compatibility according to the invention with an existing modular scaffolding system, in particular the all-round scaffolding system from Layher, compliance with its system dimensions is guaranteed and thus enables simple and quick installation without difficulty. Thanks to specially developed modular accessory components such as belt connector devices and connection devices that can be easily connected in the groove of the upper / lower belt, variable use within an existing module frame is possible. In addition, using the lattice girder system according to the invention, high-load-bearing components can be installed in a simple manner, which reliably remove large spans and high loads.

The lattice girder system according to the invention is particularly distinguished by the fact that the upper and lower chords of the individual lattice girders consist of an extruded aluminum profile with an integrated groove, according to a preferred embodiment. In one variant, the extruded aluminum profile is designed as a round tube profile. For extremely high loads, a profile is provided for the upper and lower chord, which is available as a rectangular extruded profile with an integrated groove and optionally with keder tarpaulin inserts.

According to the invention, the lattice girder system in scaffolding as a surface scaffold, as a heavy-duty substructure for podiums, as Roof construction for large spans, in the general event area or for general bridging can be used. The vertical posts with connection elements (perforated disks) at a distance from the system dimension of an existing module scaffold ensure that within the system dimension, including the surrounding components of a module scaffold, construction can continue with the same system dimension. Furthermore, the connection elements on the vertical posts ensure that several parallel spaced lattice girders can be connected to each other to form a load-bearing structure by means of crossbars and cross-diagonals in order to provide a flat support structure even for large spans. Modular additional components, which can be connected to the upper and / or lower flange by means of slot nuts or hammer head units via connection devices, offer numerous application options for integrating the lattice girder or the lattice girder system within an existing modular framework. Complex structures of a lattice girder system are made possible by the formation of special knot lattice girders, which allow incoming and outgoing lattice girders to be connected in the longitudinal and transverse directions in a simple manner, depending on the given geometry.

A particularly preferred embodiment of the straps of the lattice girders, which ensures high loads, is characterized in that the geometry of the upper / lower straps is designed such that the ratio of the width of the groove to the outer diameter of the strap is less than 0.4, in particular is in the range between 0.3 and 0.4.

Further embodiments and advantages of the invention result from the features further specified in the claims and from the exemplary embodiments specified below. The features of the claims can be combined with one another in any way insofar as they are not obviously mutually exclusive.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1

schematischer Querschnitt durch den als Rundrohr ausgebildeten Obergurt eines Gitterträgers,

Fig. 2

schematischer Querschnitt durch den als Rechteckhohlprofil ausgebildeten Obergurts eines Gitterträgers mit zusätzlichen Kederprofilausnehmungen,

Fig. 3

schematische Perspektivdarstellung eines Moduls eines Gitterträgers eines ersten Ausführungsbeispiels,

Fig. 4

schematische Perspektivdarstellung eines Moduls eines Gitterträgers eines zweiten Ausführungsbeispiels,

Fig. 5

schematische Perspektivdarstellung eines Moduls eines Gitterträgers eines dritten Ausführungsbeispiels,

Fig. 6

schematische Perspektivdarstellung eines Moduls eines Gitterträgers eines vierten Ausführungsbeispiels,

Fig. 7

schematische Perspektivdarstellung eines Moduls eines Gitterträgers eines fünften Ausführungsbeispiels,

Fig. 8

schematische Perspektivdarstellung eines Moduls eines Gitterträgers eines sechsten Ausführungsbeispiels,

Fig. 9

schematische Perspektivdarstellung einer Gurtverbindereinrichtung für rohrförmige Obergurte von Gitterträgern,

Fig. 10

schematische Detailperspektivdarstellung in auseinander gezogener Darstellung des Anschlusses von Obergurten und Gitterträgern mittels einer Gurtverbindereinrichtung gemäß Fig. 9,

Fig. 11

schematische Perspektivdarstellung einer Gurtverbindereinrichtung, die als U-Profil ausgebildet ist,

Fig. 12

schematische Perspektivdetailuntersichtsdarstellung der Verbindung von Obergurten von Gitterträgern mittels der Gurtverbindereinrichtung gemäß Fig. 11,

Fig. 13

schematische Perspektivdarstellung einer Anschlusseinrichtung für den Obergurt/Untergurt eines Gitterträgers zum Anschluss eines Vertikalgerüststiels eines Modulargerüsts in einer ersten Ausführungsvariante mit zusätzlichem Anschlusselement,

Fig. 14

schematische Perspektivdarstellung einer Anschlusseinrichtung für den Obergurt/Untergurt eines Gitterträgers zum Anschluss eines Vertikalgerüststiels eines Modulargerüsts in einer zweiten Ausführungsvariante mit zusätzlichem Anschlusselement,

Fig. 15

schematische Perspektivansicht einer Anschlusseinrichtung mit einem Rohrprofil,

Fig. 16

schematische Perspektivdarstellung einer Anschlusseinrichtung mit einer Anschlussöse,

Fig. 17

schematische Perspektivdarstellung eines Gitterträgers mit am Obergurt und Untergurt angeschlossenen Anschlusseinrichtungen zum Anschluss von Gerüststielen eines Modulargerüsts,

Fig. 18

schematische Perspektivdarstellung zweier in Querrichtung parallel beabstandeter Gitterträgervorrichtungen mit dazwischen angeordneter Aussteifungskonstruktion in einem ersten Ausführungsbeispiel,

Fig. 19

schematische Perspektivdarstellung zweier in Querrichtung parallel beabstandeter Gitterträgervorrichtungen mit dazwischen angeordneter Aussteifungskonstruktion in einem zweiten Ausführungsbeispiel,

Fig. 20

schematische Perspektivdarstellung einer Gitterträgersystemkonstruktion zur Bildung einer variablen flächenförmigen Tragkonstruktion unter Einsatz von Gitterträgern und Knotengitterträgern,

Fig. 21

schematische Perspektivdarstellung einer ersten Ausführungsvariante eines Knotengitterträgers,

Fig. 22

schematische Perspektivdarstellung einer zweiten Ausführungsvariante eines Knotengitterträgers,

Fig. 23

schematische Perspektivdarstellung einer dritten Ausführungsvariante eines Knotengitterträgers,

Fig. 24

schematische Perspektivdarstellung eines Gitterträgers mit einem Knick,

Fig. 25

schematische Perspektivdarstellung eines Gitterträgers mit einer Krümmung,

Fig. 26

schematische Perspektivdarstellung eines Fachwerkbinders unter Einsatz von gekrümmten Gitterträgerelementen im End- und Firstbereich,

Fig. 27

schematische Perspektivdarstellung eines Bogenträgers, gebildet aus abwechselnd angeordneten geradlinigen Gitterträgern und geknickten beziehungsweise gekrümmten Gitterträgern,

Fig. 28

schematische ausschnittsweise Perspektivdarstellung eines Modulargerüsts in dem ein Gitterträger beziehungsweise ein Gitterträgersystem integriert angeschlossen ist, in einer ersten geometrischen Zuordnung des Gitterträgersystems zum Modulargerüst,

Fig. 29

schematische ausschnittsweise Perspektivdarstellung eines Modulargerüsts in dem ein Gitterträger beziehungsweise ein Gitterträgersystem integriert angeschlossen ist, in einer zweiten geometrischen Zuordnung des Gitterträgersystems zum Modulargerüst,

Fig. 30

schematische Perspektivdarstellung eines Gerüstträgersystems mit zwei in Querrichtung parallel angeordneten Gerüstträgern und einem dazwischen angeordneten Aussteifungssystem und oberseitig angeschlossenen Gerüstbelägen,

Fig. 31

schematischer Schnitt durch die Vorrichtung gemäß Fig. 30 im Obergurtbereich,

Fig. 32

schematische Detailperspektive eines Gitterträgers mit angeschlossenen Kederdachplanen,

Fig. 33

schematischer Querschnitt im Obergurtbereich durch den Gitterträger gemäß Fig. 32 mit angeschlossem Kederdachplanen, die höhenversetzt und in Längsrichtung versetzt an zwei Anschlussprofilstäbe angeschlossen sind,

Fig. 34

schematische Perspektivdarstellung eines Anschlussprofils für Kederplanen mit darunter angeordneten Abstandsprofil,

Fig. 35

schematischer Querschnitt durch die Darstellung gemäß Fig. 34,

Fig. 36

schematische Perspektivdarstellung eines Anschlussprofils für Kederplanen mit darunter angeordneten Abstandsprofil, wobei die Profileinrichtung für das Kederdach einen Überstand gegenüber dem Abstandsprofil aufweist,

Fig. 37

schematischer Querschnitt durch die Darstellung in Fig. 36,

Fig. 38

schematische Perspektivdarstellung des Anschlussprofilstabs für eine Kederdachplane und

Fig. 39

schematischer Querschnitt durch das Anschlussprofil gemäß Fig. 38.

The invention and advantageous embodiments and developments thereof are described and explained in more detail below with reference to the examples shown in the drawing. The features to be gathered from the description and the drawing can be used according to the invention individually or in groups in any combination. Show it:

Fig. 1

schematic cross section through the top chord of a lattice girder designed as a round tube,

Fig. 2

schematic cross section through the upper flange of a lattice girder designed as a rectangular hollow profile with additional keder profile recesses,

Fig. 3

schematic perspective representation of a module of a lattice girder of a first embodiment,

Fig. 4

schematic perspective representation of a module of a lattice girder of a second embodiment,

Fig. 5

schematic perspective representation of a module of a lattice girder of a third embodiment,

Fig. 6

schematic perspective representation of a module of a lattice girder of a fourth embodiment,

Fig. 7

schematic perspective illustration of a module of a lattice girder of a fifth embodiment,

Fig. 8

schematic perspective representation of a module of a lattice girder of a sixth embodiment,

Fig. 9

schematic perspective view of a belt connector device for tubular top chords of lattice girders,

Fig. 10

schematic detailed perspective view in an exploded view of the connection of top chords and lattice girders by means of a belt connector device according to Fig. 9 ,

Fig. 11

schematic perspective view of a belt connector device which is designed as a U-profile,

Fig. 12

schematic perspective detail bottom view of the connection of top chords of lattice girders by means of the belt connector device according to Fig. 11 ,

Fig. 13

schematic perspective view of a connection device for the upper chord / lower chord of a lattice girder for connecting a vertical scaffold post of a modular scaffold in a first embodiment variant with an additional connecting element,

Fig. 14

schematic perspective view of a connection device for the upper chord / lower chord of a lattice girder for connecting a vertical scaffold post of a modular scaffold in a second embodiment variant with an additional connection element,

Fig. 15

schematic perspective view of a connection device with a tubular profile,

Fig. 16

schematic perspective view of a connection device with a connection eye,

Fig. 17

schematic perspective view of a lattice girder with connected to the upper and lower chord Connection devices for connecting scaffold posts of a modular scaffold,

Fig. 18

1 shows a schematic perspective illustration of two lattice girder devices spaced apart in parallel in the transverse direction with a stiffening structure arranged between them,

Fig. 19

2 shows a schematic perspective illustration of two lattice girder devices spaced in parallel in the transverse direction with a stiffening structure arranged between them,

Fig. 20

schematic perspective representation of a lattice girder system construction to form a variable sheet-like supporting structure using lattice girders and knot lattice girders,

Fig. 21

schematic perspective representation of a first embodiment variant of a knot lattice girder,

Fig. 22

schematic perspective representation of a second embodiment variant of a knot lattice girder,

Fig. 23

schematic perspective representation of a third embodiment variant of a knot lattice girder,

Fig. 24

schematic perspective representation of a lattice girder with a kink,

Fig. 25

schematic perspective representation of a lattice girder with a curvature,

Fig. 26

schematic perspective view of a truss using curved lattice girder elements in the end and ridge area,

Fig. 27

schematic perspective representation of a bow girder, formed from alternately arranged straight lattice girders and kinked or curved lattice girders,

Fig. 28

schematic partial perspective representation of a modular framework in which a lattice girder or a lattice girder system is integrated, in a first geometric assignment of the lattice girder system to the modular framework,

Fig. 29

schematic partial perspective view of a modular scaffold in which a lattice girder or a lattice girder system is integrated, in a second geometric assignment of the lattice girder system to the modular scaffold,

Fig. 30

schematic perspective view of a scaffold support system with two scaffold supports arranged in parallel in the transverse direction and a stiffening system arranged in between and scaffold coverings connected on the top,

Fig. 31

schematic section through the device according to Fig. 30 in the top chord area,

Fig. 32

schematic detailed perspective of a lattice girder with attached keder roof tarpaulins,

Fig. 33

schematic cross section in the upper chord area through the lattice girder according to Fig. 32 with attached keder roof tarpaulin, which are offset in height and offset in the longitudinal direction on two connecting profile bars,

Fig. 34

schematic perspective representation of a connection profile for keder tarpaulins with a spacing profile arranged underneath,

Fig. 35

schematic cross section through the representation according to Fig. 34 ,

Fig. 36

schematic perspective view of a connection profile for keder tarpaulins with a spacer profile arranged underneath, the profile device for the keder roof having a projection over the spacer profile,

Fig. 37

schematic cross section through the representation in Fig. 36 ,

Fig. 38

schematic perspective view of the connecting profile rod for a keder roof tarpaulin and

Fig. 39

schematic cross section through the connection profile according to Fig. 38 .

WAYS OF CARRYING OUT THE INVENTION

In Fig. 1 is shown in cross section a first embodiment of a top chord 20.1 of a lattice girder, which is designed as a tubular profile, in particular as an extruded aluminum profile. In the exemplary embodiment, the upper flange 20.1 has a diameter B1 of 60.3 mm and a wall thickness of 6 mm. At the top, an upwardly open, undercut, rectangular, continuous groove 30 in the belt length direction is formed in the cross-sectional shape, which in the exemplary embodiment has an inner groove width of 22.5 mm. A continuous flattening 64 is present on the top in both edge regions of the groove 30. This flattening 64 serves as a support for connection devices, which are described below.

At the level of the center lines, a relatively small notch 32 is provided on both sides on the outer wall of the tubular profile and serves as an adjustment aid for making any bores. Such a notch 32 is also present in the middle of the groove base of the groove 30. Coupling recesses 36 are provided on both sides at the same height level, which, using belt connector devices described below, serve to couple adjacent abutting upper chords 20.1.

As will be described below, a lattice girder 10.1, 10.2, 10.3, 10.4, 10.5, 10.6 (see 3 to 8 ) also has a lower flange 22.1, which is mirror-symmetrical to the center line, that is to say has a groove 30 which is open at the bottom, and which is identical in cross-sectional dimensions to the upper flange 20.1.

In Fig. 2 A second exemplary embodiment of an upper belt 20.2 for a lattice girder 10 is shown, which is also designed as an extruded aluminum profile, the cross-sectional shape being designed as a rectangular tube, the outer diameter B1 of which is 100 mm in the exemplary embodiment. Here, too, there is an open, undercut, rectangular groove 30 on the upper side, the inner width B2 of which in the exemplary embodiment is 31 mm.

In addition, keder profile recesses 34 are formed on the upper flange 20.2 on both sides in the upper and lower edge area, which enable the connection of a keder profile with a tarpaulin.

In order to achieve the required load-bearing strengths, it is advantageous that the ratio B2 (groove width) to B1 (outer diameter) is in the range between 0.3 and 0.4. For the second exemplary embodiment of the upper flange 20.2 as a rectangular tube, this means that a standardized groove 30 is possible. For the first embodiment as a round tube profile 20.1, however, the chosen dimensions of the groove are concerned 30 not by standardized dimensions. The dimensions are adapted to the round tube cross-section. A standardized groove would be larger, which would reduce the available internal cross-section for connecting belt connector devices, which would drastically reduce the load-bearing capacity of the connection.

In Fig. 3 a first exemplary embodiment of a lattice girder 10.1 is shown in perspective, this lattice girder 10.1 representing a module unit for a lattice girder system which can be combined with further lattice girders (module units) described below.

In the drawings, the longitudinal direction is indicated by L, the transverse direction by Q and the height direction by H. The top chord 20.1 is arranged in the longitudinal direction L with its undercut groove 30 open at the top. On the underside, the lower flange 22.1 is arranged with the same cross section and a groove 30 pointing downwards. In the left and right end areas there is a vertical post 24.2 formed as a round tube, the end areas of which are welded on the upper side to the upper flange 20.1 and on the underside to the lower flange 22.1. Another vertical post 24.2 is welded in the middle between the upper chord 20.1 and lower chord 22.1 and has three connecting elements 40 spaced apart in the vertical direction H, which are designed as rosettes (perforated disks) for connecting further components, in particular scaffold components via a wedge head connection, which is used, for example, in the known Layher All-round scaffolding system can be used. The distance between the connection elements 40 in the height direction H bears R / 2, where R is a module grid dimension of a module frame, in particular of the known Layher all-round module frame.

Between the in Fig. 3 the left vertical post 24.2 and the middle vertical post 24.1, a longitudinally falling diagonal 26.1 is welded between the upper chord 20.1 and lower chord 22.1. Then between the vertical post 24.2 and the in Fig. 3 right vertical post 24.2 welded a rising diagonal 26.2 to the upper flange 20.1 or 22.1 lower flange.

The length of the upper chord 20.1 or lower chord 22.1 corresponds to the grid dimension R, the middle vertical post 24.1 being arranged in the middle (grid dimension R / 2) of the scaffold girder 10.1.

In Fig. 4 a second embodiment of a lattice girder 10.2 is shown, which has the length 2R. The lattice girder 10.2 has two vertical posts 24.1 arranged symmetrically to the center with connecting elements 40, the spacing of which in the longitudinal direction is R. In the area between the two vertical posts 24.1 in the longitudinal direction, starting from the in Fig. 4 left vertical post 24.1 a rising diagonal 26.2 and a falling diagonal 26.1 welded. The left and right end region of the lattice girder 10.2 according to Fig. 4 from the left or right vertical post 24.2 corresponds to the design as the edge regions of the lattice girder 10.1 according to Fig. 3 each with a vertical post without connecting elements in the end area and a subsequent falling or rising diagonal 26.1, 26.2. The vertical post 24.2 in the end area also serves to counteract welding distortion so that the system dimensions can be adhered to exactly.

The Figures 5 , 6 and 7 show further embodiments of lattice girders 10.3, 10.4, 10.5, which in principle have the same structure as the lattice girder 10.2 according to Fig. 4 , but with the difference that the lattice girder is designed longer around the framework R with a rising diagonal 26.2, a vertical post 24.1 and a falling diagonal 26.1. The same components have the same reference numerals as in the lattice girder 10.2 in Fig. 4 and will not be explained again.

In the lattice girders 10.1, 10.2, 10.3, 10.4, 10.5 there is a vertical post 24.2 in the end area without connection elements. In order to have a vertical post 24.1 with connection elements in the end area if necessary To be able to provide 40 is in Fig. 8 A sixth embodiment of a lattice girder 10.6 is shown, which can also be combined as a module unit within a scaffold support system with the lattice girders 10.1, 10.2, 10.3, 10.4, 10.5 described above. The lattice girder 10.6 has in Fig. 8 left end region a vertical post 24.1 with connection elements 40 and in its in Fig. 8 right end area on a vertical post 24.2 without connection elements 40. A falling diagonal 26.1 is welded in between the vertical posts 24.1, 24.2. The distance of the in Fig. 8 left vertical post 24.1 to the right end face of the upper chord 20.1 or lower chord 22.1 is R / 2, so that when the lattice girder 10.6 is coupled to one of the lattice girders 10.1, 10.2, 10.3, 10.4, 10.5, the spacing of the vertical posts 24.1 with connecting elements 40 in turn is the grid dimension R results.

In the illustrated embodiments of the lattice girder 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, round tube profiles with an outer diameter of 48.3 mm and a wall thickness of 4 mm are preferably used for the vertical posts 24.1, 24.2 and the diagonals 26.1, 26.2 are welded to the top flange 20.1 and bottom flange 22.1.

In the Figures 9 to 12 Exemplary embodiments are shown of how individual lattice girders 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, arranged one behind the other in the longitudinal direction L, are coupled to one another in a statically load-bearing manner. The lattice girders 10 are coupled to one another by the coupling of abutting upper chords 20.1, 20.2 and abutting lower chords 22.1, 22.2 by means of belt connector devices 42.1, 42.2, which are described below.

A first exemplary embodiment of a belt connector device 42.1 is designed as a full profile, in particular a full aluminum profile, and has an outer circumferential contour which essentially corresponds to the inner circumferential contour of the upper chord 20.1 or lower chord 22.1 or is slightly smaller, so that the Belt connector device 42 can be positively inserted in the interior of the tubular profile of a belt 20, 22 in the end region. Each upper chord 20.1, 20.2 and each lower chord 22.1, 22.2 each have three coupling recesses 36 arranged one behind the other in the longitudinal direction L in their end region. Correspondingly, the belt connector device 42 also has three continuous connection recesses 44 - two each symmetrical to the center - arranged one behind the other in the longitudinal direction L - so that there are a total of six connection recesses 44 on the belt connector device 42. In accordance with the consideration of the contour of the groove 30, the belt connector device 42 has a recess 68 on the upper side, the inner contour of which essentially corresponds to the inner outer contour of the groove 30. In the center of the recess 68 there is a continuous notch 70 in the recess base and a notch 70 is also present in the longitudinal direction at the level of the connecting recess 44. Both notches 70 provide an optical orientation line if additional holes have to be made to enable further connections.

In Fig. 10 the coupling state is shown in an explosive perspective. To couple the upper chord 20.1, the belt connector device 42 is pushed into the inner cavity of an upper chord 20.1 until the connecting recesses 44 are aligned in the transverse direction Q with the coupling recesses 36 of the upper chord 20.1. In this aligned state, a bolt 72 can be inserted from the outside, which is secured on the opposite side by means of a split pin 74. The same procedure is followed on the opposite top chord 20.1 of the next lattice girder 10.1, ... The same procedure is also carried out for the lower flange 22.1, 22.2.

If the rectangular tube profile is present as the upper flange 20.2 and the lower flange 22.2, a belt connector device 42 is used, the outer circumferential contour of which is the inner circumferential contour of the rectangular hollow profile essentially corresponds. This embodiment is not shown in the figures.

The Fig. 11 shows a further belt connector device 42.1, which is designed as a U-profile and in the flanges of the U-profile has two three connection recesses 44 spaced one behind the other in the longitudinal direction L and has two elongated hole recesses 76 in the web area, also running in the longitudinal direction L, which are connected in the Align condition with the opening slot of groove 30.

Fig. 12 shows the coupled state of a lower flange 22.1. In contrast to the belt connector device 42.1 according to Fig. 9 In the case of the belt connector device 42.2, the incoming and outgoing upper belts 20.1, 20.2 or lower belts 22.1, 22.2 can be inserted in the height direction H into the U-profile-shaped belt connector device 42.2 and then via screw units 78, which pass through the coupling recess 36 of the belts 20, 22 and the connection recesses 44 the belt connector device 42.2 are connected. In Fig. 12 the diagonals and vertical bars connected to the lower flange 22.1 are not shown.

The U-shaped belt connector device 42.1 sometimes simplifies the assembly process when coupling scaffold girders, since in contrast to the positive insertion of the straps 20, 22 onto the belt connector device 42.1, the straps 20, 22 can be easily threaded in from above or below.

The lattice girders 10.1, 10.2, 10.3, 10.4, 10.5, 10.6 are especially designed so that they can be combined and used variably with an existing modular scaffolding, in particular the Layher all-round scaffolding system. In order to provide connection options for scaffold components, additional modular units are available as part of the modular scaffold lattice girder system Provided that allow easy connection while ensuring high load capacities.

So is in Fig. 13 a first embodiment of a connection device 46.1 is shown. The connection device 46.1 has on the underside a rectangular bearing plate 48, which has two opposite bearing plate recesses 50 in its end regions in the longitudinal direction L, which make it possible for the bearing plate 48 to be moved over in Fig. 13 T-nut units or hammer-head screw units, not shown, can be connected in the groove 30 of a belt 20, 22. A tubular connection unit 52.1 is connected, in particular welded, to the top of the bearing plate 48, which has a connection element 40 which is designed as a rosette or perforated disk and ensures a compatible connection of components of a module frame. The distance of the connecting element 40 to the lower level of the bearing plate 48 is indicated by A1. A pipe connector 56, which has a smaller diameter than the connection unit 52.1, is formed on the upper side of the connection unit 52.1, so that a stop 58 is formed. The pipe connector 56 has an outer diameter which corresponds to the inner diameter of a profile element of a modular scaffold, in particular a scaffold post, so that a scaffold post can be plugged onto the pipe connector 56 in a simple manner until its end face strikes the stop 58.

In Fig. 14 A second exemplary embodiment of a connection device 46.2 is shown, which basically has the same structure as the connection device 46.1 according to Fig. 13 . The same components have the same reference numerals and are not explained again. The difference between the connection device 46.2 and the connection device 46.1 is that the connection unit 52.2 has a greater length in the height direction H, that is to say the connection element 40 has a distance A2 from the underside of the bearing plate 48 which is greater than the distance A1 in the connection device 46.1 according to Fig. 13 .

In Fig. 15 A third exemplary embodiment of a connection device 46.3 is shown, which likewise has a bearing plate 48 with recesses 50, a simple round tube 60 being connected on the upper side in the height direction H, in particular being welded on. Further scaffolding components can be plugged in or plugged onto this scaffold tube or pipe couplings or the like can be connected.

Fig. 16 shows a fourth embodiment of a connection device 46.4 with a bearing plate 48 with bearing plate recesses 50, the upper side of the connection unit 52.4 being designed as a connecting eye 62 which is connected to the bearing plate 48, in particular welded on. By means of such a connection device 46.4, for example, a rope construction can be connected as anchoring, or the connection eyelet 62 serves as a temporary connection option for a lifting tool during assembly.

Fig. 17 shows a section of a lattice girder 10.5 with its top flange 20.1 and its bottom flange 22.1, connection units 46.1 and 46.2 being connected to the top flange 20.1 and connection units 46.3 to the bottom flange 22.1. As already described in the description of the lattice girders 10.1, 10.2, 10.3, 10.4, 10.5, 10.6, the connection elements 40 of the vertical posts 24.1 are connected to one another in the vertical direction H in a grid dimension R / 2 at the vertical posts 24.1.

Based on the selected spacing dimension A2 of the connecting element 40 of the connecting device 46.2, when the connecting device 46.1 is mounted on the upper flange 20.1, the spacing between the connecting element 40 of the connecting device 46.1 and the upper connecting element 40 of the vertical post 24.1 of the lattice girder 10.5 also results in the grid dimension R / 2. This ensures system compatibility with regard to the grid dimension of a module frame connected to the lattice girders 10.5.

The distance A1 of the connection element 40 of the connection device 46.1 is dimensioned such that in the connected state to the upper connection element 40 of the vertical post 24.1 there is a grid dimension R / 4, so that compatibility with an adjacent module frame is also ensured here.

In the Fig. 17 The connection devices 46.1, 46.2, 46.3 shown are each arranged in the height direction H in alignment with the longitudinal direction of the respective vertical post 24.1. Due to the continuous groove 30 in the upper chord 20.1 or in the lower chord 22.1, however, it is also possible to connect the connecting devices 46 offset to the vertical posts 24.1, depending on the geometry to be maintained with regard to the component to be scaffolded or the arrangement of surrounding scaffolding components.

Fig. 18 shows a lattice girder system that is designed as a surface system and has two lattice girder devices spaced in parallel in the transverse direction Q, which are each formed from lattice girders 10.6, 10.3 and 10.6 combined with one another in the longitudinal direction L. Between the parallel lattice girder structures, a stiffening structure is formed as a framework, consisting of upper and lower crossbeams 14 and transverse diagonals 16. In this case, in the plane of two vertical posts 24.1 spaced parallel in the transverse direction Q, each lattice girder device is connected by crossbeams each connected to the upper and lower connecting element 40 of the vertical post 24.1 and in the lower connecting element 40 of the vertical post, connected crossbeams with a transverse diagonal extending therebetween formed a stiffening truss structure in the transverse direction Q. The crossbars 14 and diagonals 16 are components from a modular scaffolding system, such as the Layher all-round scaffolding system, which is connected to the connection elements 40 of the vertical posts 24.1 using the known connection technology. In addition, in the plane of the upper chord 20.1 and lower chord 22.1 between the crossbars 14 there are further transverse diagonals 16 on the connection elements 40 connected, which also form a stiffening truss system offset to the upper chord level and the lower chord level. By means of this framework construction, the upper chord 20.1 and also the lower chord 22.1 are laterally held in the longitudinal direction L at each position of a vertical post 24.1, so that there is a kink length K1 which corresponds to the grid dimension R. Lateral fixation of the belts is necessary when there is high pressure, so there is a risk of buckling. By choosing the appropriate bracing system, permissible buckling lengths - here K1 - can be easily implemented.

This in Fig. 19 The lattice girder system shown basically has the same structure as the lattice girder system according to Fig. 18 , but with the difference that the stiffening structure is designed by crossbars 14 and diagonals 16 such that the belts are held laterally only on every second vertical post 24.1, so that there is a kink length K2 that is twice as high as the grid dimension R. Such a construction is possible if the compressive forces occurring in the belts 20, 22 permit such kink lengths.

In order to enable a combination of lattice girders 10.1, 10.2, 10.3, 10.4, 10.5, 10.6 also in the transverse direction Q, further module units of a lattice girder system are available, which are shown in FIGS Figures 21 , 22 and 23 are shown and which are designed as node grid support elements 12.1, 12.2, 12.3, wherein Fig. 20 shows a possible combination of the knot lattice girders 12.1, 12.2, 12.3 with the lattice girders 10.1, 10.2, 10.3, 10.4, 10.5, 10.6.

In Fig. 22 A first knot lattice girder 12.1 is shown, which enables the connection of lattice girders 10 at a right angle to one another - seen in an L-shape in a plan view. The knot lattice girder 12.1 is structurally similar to the lattice girder 10.6 according to Fig. 8 , with the difference that a central connecting post 38 with Connection elements 40 is present, to which the upper chords 20.1, 20.2 and lower chords 22.1, 22.2 are welded together at an angle of 90 °. Both in the longitudinal direction L and in the transverse direction Q, a vertical post 24 is connected, in particular welded, between the upper chord 20.1 and the lower chord 22.1 at a distance from the central connecting post 38, a diagonal 26.1 between the upper chord 38 and the vertical post 24 between the upper chord 20.1 and Lower flange 22.1 is welded in.

The distance between the central connection post 38 and the end face of the belts 20, 22 in the longitudinal direction L and in the transverse direction Q is R / 2, so that when connecting further lattice girders 10, the grid dimension R of the module frame, that is the distance to the next vertical post 24.1 with connection elements 40, is maintained. A diagonal strut 18 is connected or welded between the upper chord 20.1 in the longitudinal direction L and the upper chord 20.1 in the transverse direction Q and the lower chord 22.1 in the longitudinal direction L and the lower chord 22.1 in the transverse direction Q, which additionally braces the knot lattice girders 12.1.

Seen in a top view, the knot lattice girder 12.1 thus provides an L-shaped connecting element which enables lattice girders 10 to be connected in a longitudinal direction L and in a transverse direction Q, that is to say a corner formation of 90 ° is made possible.

Fig. 23 shows a second exemplary embodiment of a knot lattice girder 12.2 which in principle has the same structure as the knot lattice girder 12.1 according to Fig. 22 , but with the difference that, seen in a plan view, a T-shaped connecting element is provided which enables the connection of two lattice girders 10 running in the longitudinal direction L and one lattice girder 10 running perpendicularly thereto in the transverse direction Q.

The same components have the same reference numerals and are not explained again.

Fig. 21 shows finally a third embodiment of a truss lattice girder 12.3 with a structure similar in principle to the lattice girder 12.1, 12.2 according to the Figures 22 and 23 with the difference that, seen in a plan view, a knot lattice girder 12.3 is provided, which represents a crossing connecting element, with the two lattice girders 10 running in the longitudinal direction L and two lattice girders 10 running in the transverse direction Q, in each case at an angle of 90 ° between the transverse direction Q and longitudinal direction L can be connected.

Fig. 20 shows schematically an embodiment of a surface support structure using lattice girders 10 and knot lattice girders 12, which can be variably adapted to the respective geometric conditions, the grid dimension R for connecting further components of a modular scaffold is always guaranteed.

In Fig. 24 a further exemplary embodiment of a lattice girder 10.22 is shown schematically, the upper flange 20.1 and lower flange 22.1 of a kink K1, K2 in the longitudinal direction L or as in FIG Fig. 25 shown has a curvature K1, K2 in the center. This kink or curvature formation in the central region is possible for practically every lattice girder 10.

With such lattice girders 10.22 in combination with further lattice girders 10, it is possible without problems truss 112 according to Fig. 26 to produce with a large span, which have a kink K1, K2 in the ridge area and a kink K1, K2 in the area just before the support. Furthermore, with such lattice girders 10.22 it is easily possible, in combination with further lattice girders 10 arch binders 114 according to the schematic illustration in FIG Fig. 27 with large spans.

Fig. 29 shows a perspective view of the use of a lattice girder system according to the invention with lattice girders 10 in the frame and in combination with an existing modular scaffolding, in particular a Layher all-round scaffolding system. The lattice girder system has two lattice girder devices spaced apart in parallel in the transverse direction Q, with lattice girders 10 combined with one another, the spacing in the transverse direction Q of which corresponds to the distance dimension of the module frame in the transverse direction Q. The modular scaffolding consists of vertical posts 80, crossbars 82, longitudinal bars 84, transverse diagonals 86 and longitudinal diagonals 88. This modular scaffolding, which is known as the Layher all-round scaffolding, can be used flexibly. In combination with the lattice girder system according to the invention, new possibilities open up for equipping a wide variety of building geometries and bridging spans that are not possible with the normal scaffolding system. In the illustrated embodiment according to Fig. 29 the lattice girder construction is arranged such that the vertical posts 24.1 of the lattice girders are aligned in the height direction H with the vertical posts 80 of the module scaffold connected on the top and bottom and, moreover, there is system conformity in the area of the lattice girders 10 with respect to the grid dimension R of the module scaffold. The vertical supports 80 of the surrounding module frame are connected to the lattice girders 10 via the connection devices 46.1 and 46.2 described above, the longitudinal and transverse diagonals 86, 88 being connected to the lattice girders 10 via the upper and lower connecting elements 40 of the vertical posts 24.

Fig. 28 shows a similar construction of the integration of a lattice girder system according to the invention into an existing modular scaffold with a basically similar structure, but with the difference that the vertical posts 80 are not aligned with the vertical posts 24.1 of the lattice girders in the vertical direction, that is to say in the longitudinal direction L an offset V1 (scaffold on the top ) or an offset V2 (scaffold on the underside). This is possible because the connection devices 46 for connecting the surrounding ones Scaffold components can be placed anywhere as a result of the groove 30 of the straps 20, 22 extending in the longitudinal direction L. As a result, the geometry of the arrangement between the module frame and lattice girder system can be easily adapted to the respective geometric requirements on site.

It is also possible to easily combine the lattice girder or the lattice girder system with differently designed work and protective scaffolds, for example the Layher all-round scaffolding system, provided the connection devices are designed accordingly.

In the Figures 30 and 31 the use of the lattice girder 10 or a lattice girder system to form a flat podium is shown schematically. The surface structure corresponds to that in the exemplary embodiment Fig. 19 surface structure shown consisting of lattice girders 10 and a truss-like stiffening structure with crossbars 14 and cross-diagonals 16. For connecting scaffolding floors 90, a connecting device 46.5 is used here, which is designed as a connecting profile rod 54 which is continuous in the longitudinal direction L and is in the form of a U-profile which is open at the top , in which the flooring 90 via a suspension claw 92 (see Fig. 31 ) can be attached. In addition, a lift-off protection profile 94 is connected, which prevents the floor coverings 90 from lifting off. In the exemplary embodiment, a spacing profile 90, which is designed as a rectangular hollow profile, is additionally arranged below the U-shaped connecting profile rod 54.1. The connecting profile rod 54 and the spacer profile 96 are connected to the groove 30 of the upper flange 20.1 via a groove unit or a hammer head unit.

In the Figures 33 to 39 A further connection device 46.6 is shown which enables the connection of a keder roof tarpaulin 100 to the lattice girder 10 or to the lattice girder system.

According to a first embodiment variant in 38 and 39 the connection device 46.6 has a connection profile rod 54.2 which is continuous in the longitudinal direction L and which, according to FIG Fig. 39 is designed as a hollow profile rod, in particular as an extruded hollow profile rod, and has a keder profile recess 104 in the upper and left side edge region. Furthermore, there is a connection recess 116 in the upper flange and in the lower flange of the connecting profile rod 54.2, through which a sliding block unit or a hammer head unit can be passed for connection to the groove 30 of a belt 20 of a lattice girder.

Another variant exists according to the Figures 34 and 35 in that there is a spacing profile 110 with aligned connecting recesses 116 below the connecting profile rod 54.2, which is designed as a rectangular hollow profile. In Fig. 34 the spacer hollow profile 110 has the same length as the connecting profile rod 54.2.

In Fig. 36 the connecting profile rod 54.2 has a protrusion U in the longitudinal direction L compared to the spacer profile 110, that is to say by means of such a construction a roof protrusion of a keder roof or an overlap of adjoining keder tarpaulins 100 can be implemented without problems (see Fig. 32 ).

A particularly advantageous embodiment of the connection device 46.6 for connecting a keder tarpaulin 100 via a keder tarpaulin edge profile 102 arranged in a keder profile recess 104 is shown in FIG Fig. 33 combined with Fig. 32 shown.

In the in Fig. 32 The construction shown is first of all a connecting profile rod 54.2 on the upper flange 20.1 Fig. 38 respectively Fig. 39 connected and one side of a keder tarpaulin 100 drawn through a keder tarpaulin edge profile 102 in the keder profile recess 104. This is followed in the longitudinal direction L by a connecting device 46.6, which in the Figures 36 and 37 is shown, that is, there is a connection profile rod 54.2 which has a height offset HK in the starting area of the lattice girder 10 compared to the connecting profile bar 54.2 and at the same time allows a protrusion ÜK of the muting keder tarpaulins 100. Such a construction makes it possible to limit the keder tarpaulin 100 in length in order to reduce its weight and to simplify handling during assembly. At the same time, the ÜK overhang ensures tightness against the ingress of rainwater. The height offset HK of adjacent keder tarpaulins 100 enables ventilation which counteracts the formation of condensation.

Claims (22)

1. Lattice support (10.1, 10.2, 10.3, 10.4, 10.5, 10.6) having a framework-like supporting structure, in particular made of metal or aluminium, having

   - an upper flange (20.1, 20.2) which is continuous in the longitudinal direction (L),

   - a lower flange (22.1, 22.2) which is continuous in the longitudinal direction (L),

   - vertical posts (24.1, 24.2) whose opposite end regions are connected, in particular welded, to the upper flange (20.1, 20.2) and to the lower flange (22,1, 22.2),
   wherein

   - the upper flange (20.1, 20.2) and/or the lower flange (22.1, 22.2) have/has a continuous undercut groove (30) which is open outwardly on the upper side or lower side and via which further components, in particular components of the modular scaffold, can be connected by means of connection units in any desired position in the longitudinal direction (L),

   - characterized in that

   - the lattice support (10.1, 10.2, 10.3, 10.4, 10.5, 10.6) has at least one or two or more vertical posts (24.1), with connection elements (40) for the connection of further components, whose distance apart in the vertical direction (H), that is to say in the longitudinal direction of the vertical posts (24.1), corresponds to a half, a whole or a multiple of the whole of the unit spacing of a modular scaffold,

   wherein

   -- the lattice support (10.6) has only one vertical post (24.1) with connection elements (40) and only one vertical post (24.2) without connection elements (40) and only one diagonal extending between the vertical posts (24.1, 24.2), wherein the distance in the longitudinal direction (L) of the lattice support (10.6) between the vertical post (24.1) with connection elements and the terminal end of the lattice support (10.6) corresponds to half a unit spacing (R) of the modular scaffold,
   or

   -- the lattice support (10.1) has only one vertical post (24.1) with connection elements (40) and only two vertical posts (24.2), which are arranged in the opposite end regions of the lattice support (10.1), without connection elements (40) and only two diagonals extending between the vertical posts (24.1, 24.2), wherein the distance in the longitudinal direction (L) of the lattice support (10.6) between the vertical post (24.1) with connection elements and the respective terminal end of the lattice support (10.6) corresponds to half a unit spacing (R) of the modular scaffold,
   or

   -- the lattice support (10.2, 10.3, 10.4, 10.5) has diagonals, which are connected, in particular welded, at opposite end regions to the upper flange (20.1, 20.2) and to the lower flange (22.1, 22.2) between the vertical posts (24.1, 24.2), and two or more vertical posts (24.1) with connection elements (40), wherein a vertical post (24.2) without connection elements (40) is connected between the upper flange (20.1, 20.2) and lower flange (22.1, 22.2) in the respective opposite end region of the lattice support, and the distance in the longitudinal direction (L) of the lattice support (10.6) between the vertical post (24.1) with connection elements and the respective terminal end of the lattice support (10.6) corresponds to a half a unit spacing (R) of the modular scaffold, and the distance in the longitudinal direction (L) between adjacent vertical posts (24.1) with connection elements (40) corresponds to the unit spacing (R) of the modular scaffold.
2. Lattice support according to Claim 1,

   - characterized in that

   - the upper flange (20.1, 20.2)/lower flange (22.1, 22.2) takes the form of a hollow profile, in particular a tubular or rectangular profile.
3. Lattice support according to Claim 1 or 2,

   - characterized in that

   - the undercut groove (30) has a polygonally extending, in particular rectangular or dovetail-shaped or partially circular peripheral contour.
4. Lattice support according to one or more of the preceding claims,

   - characterized in that

   - as seen in the longitudinal direction, a diagonal (26.2) rising from the lower flange (22.1, 22.2) to the upper flange (20.1, 20.2) and then a diagonal (26.1) descending from the upper flange (20.1, 20.2) to the lower flange (22.1, 22.2) is connected in each case between two vertical posts (24.1) one or more times, in each case one behind the other.
5. Lattice support according to one or more of the preceding claims,

   - characterized in that

   - at least one, in particular a plurality of, coupling apertures (36) spaced apart in the longitudinal direction (L) are present in the end region of the upper flange (20.1, 20.2) and of the lower flange (22.1, 22.2).
6. Lattice support according to one or more of the preceding claims,

   - characterized in that

   - at least one outwardly open continuous notch (32) is formed in the centre lines of the upper flange (20.1, 20.2)/lower flange (22.1, 22.2).
7. Lattice support according to one or more of the preceding claims,

   - characterized in that

   - the upper flange (20.1, 20.2)/lower flange (22.1, 22.2) has at least one keder profile aperture (34) formed in laterally, in particular two opposite laterally arranged keder profile apertures (34), arranged in particular in the upper and lower lateral edge region.
8. Lattice support according to one or more of the preceding claims,

   - characterized in that

   - the upper flange (20.1, 20.2) and the lower flange have, at opposite positions in the vertical direction (H), a locally limited bend/curvature (K1, K2) in convex or concave form.
9. Lattice support according to Claim 1,

   - characterized in that

   - the lattice support takes the form of a node lattice support (12.1, 12.2, 12.3) between incoming and outgoing lattice supports (10.1, 10.2, 10.3, 10.4, 10.5, 10.6), wherein, as seen in a plan view, the node lattice support (12.1, 12.2, 12.3) allows a connection of incoming and outgoing lattice supports (10.1, 10.2, 10.3, 10.4, 10.5) in each case at a predetermined angle to one another, in particular at an angle of 90° (degree), wherein the node lattice support (12.1, 12.2, 12.3) has a central connection post (38) which, as seen in a plan view, is situated at the node point and which has connection elements (40), and has, in each connection direction (L, Q), starting from the central connection post (38) and the upper flange (20.1), an, in particular descending, diagonal which is connected to the lower flange (22.1), and has, in the free end region, in each case a vertical post (42) without connection elements, wherein the distance between the connection post (38) and the respective terminal end of the node lattice support corresponds to half a unit spacing (R) of the modular scaffold.
10. Lattice support according to Claim 9,

    - characterized in that

    - a diagonal strut (18) as stiffening element is connected, in particular welded in, in each case between the upper flanges (20.1, 20.2) and lower flange (22.1, 22.2) arranged in the longitudinal direction (L) and transverse direction (Q).
11. Lattice support according to Claim 9 or 10,

    - characterized in that

    - the node lattice support (12.1) allows the connection of a first and second lattice support element at a right angle, that is to say takes the form of a corner connection element, or the node lattice support (12.2) allows the connection of two lattice supports which are continuous in the longitudinal direction (L) and of one lattice support extending in the transverse direction (Q), or the node lattice support (12.3) allows the connection of two lattice supports which are continuous in the longitudinal direction (L) and two lattice supports which are continuous in the transverse direction (Q).
12. Modular lattice support system,

    - characterized by

    - module units which can be combined with one another in modular fashion and which allow universal compatibility with an existing modular scaffold or the construction of a universally usable modular scaffold supporting structure with a unit spacing (R),

    - at least two or more lattice supports (10.1, 10.2, 10.3, 10.4, 10.5, 10.6), which are arranged in alignment in the longitudinal direction (L) and/or in the transverse direction (Q), and/or node lattice supports (12.1, 12.2, 12.3) according to one or more of the preceding claims,

    - wherein the end regions of adjoining upper flanges (20.1, 20.2) and adjoining lower flanges (22.1, 22.2) are in each case releasably connected to one another by means of flange connector devices (42.1, 42.2).
13. Lattice support system according to Claim 12,

    - characterized in that

    - the flange connector devices (42.1, 42.2) have an outer contour/inner contour in such a way that they are designed such that they can be pushed in a form-fitting manner into the inner contour of the upper and lower flanges (20, 22) or such that they can be pushed onto the outer contour of the upper and lower flanges (20, 22), and have connection apertures (44) which, in the pushed-in/pushed-on state, are aligned with the coupling apertures (36) of the upper flanges or lower flanges (20, 22), and fixing of adjoining upper flanges (20)/lower flanges (22) occurs by inserting bolt units (72) or screw units (78) into the connection apertures (44) and the coupling apertures (36).
14. Lattice support system according to Claim 13,

    - characterized in that

    - the flange connector device (42.1) which can be pushed in in the longitudinal direction (L) takes the form of a solid profile, and the flange connector device (42.2) which can be pushed on in the vertical direction (H) substantially takes the form of a U profile.
15. Lattice support system according to Claim 12, 13 or 14,

    - characterized in that

    - at least one, in particular a plurality of, connection devices (46.1, 46.2, 46.3, 46.4, 46.5, 46.6) is/are connected via the groove (30) on the upper flanges (20) and/or lower flanges (22) and formed in such a way that further components, in particular scaffold components, can be connected.
16. Lattice support system according to Claim 15,

    - characterized in that

    - the connection device (46.1) has a bearing plate (48) with bearing plate apertures (50) via which a connection to the groove (30) of the upper flanges 20)/lower flanges (22) occurs by means of sliding blocks or hammerhead units, and connection units (52.1, 52.2, 52.3, 52.4) are connected, in particular welded, to the bearing plate and allow the connection of further components.
17. Lattice support system according to Claim 15,

    - characterized in that

    - the connection units (52.1, 52.2, 52.3, 52.4) are designed as a hollow profile, in particular a tubular profile, with or without connection element (40) or with or without tube connector (56) with stop (58) or as a hook or eye unit (62).
18. Lattice support system according to Claim 15,

    - characterized in that

    - the connection device (46.5, 46.6) takes the form of a connection profile bar device (54.1, 54.2) extending in the longitudinal direction (L), which, on the one hand, is connected in the groove (20) of the upper/lower flange (20, 22) and, on the other hand, has connection possibilities for the connection of scaffold boards or for the connection of keder sheet edge profiles.
19. Lattice support system according to Claim 18,

    - characterized in that

    - the connection device (46.6) has two connection profile bar devices (54.2) arranged one on top of the other in the vertical direction in such a way that, in terms of height, at least two connection units for keder sheet edge profiles (102) are present with a height offset, with the result that keder sheet edge profiles (102) can be connected offset in the longitudinal direction (ÜK) with overlapping and offset in height (HK).
20. Lattice support system according to one or more of Claims 12 to 19,

    - characterized in that

    - at least two lattice supports (10) spaced apart in parallel in the transverse direction (Q), or at least two lattice support devices spaced apart in the transverse direction (Q) and each consisting of a plurality of coupled lattice supports (10) in the longitudinal direction, are present, wherein there is present, between the lattice supports (10) or the lattice support device, a stiffening structure consisting of crossmembers (14) and transverse diagonals (16) whose end regions are each connected to the connection elements (40) of the vertical posts (24.1), with the result that a framework structure is formed in the plane of the upper and lower flanges (20, 22) and in the plane in the transverse direction (Q) of adjacent vertical posts (24.1).
21. Scaffold structure consisting of the components of a modular scaffold with a unit spacing (R) such as vertical, horizontal and/or diagonal scaffold elements (80, 82, 84, 86, 88) and scaffold planks,

    - characterized in that

    - the vertical supporting elements (80) of the work and protection scaffold are connected to upper flanges (20) and/or lower flanges (22) of lattice supports (10) according to one or more of Claims 1 to 11 and 22 or to a lattice support system according to one or more of Claims 12 to 20, in particular in such a way that the vertical supporting elements (80) of the work and protection scaffold are connected to the vertical posts (24.1) of the lattice supports (10) in alignment or with an offset (VI, V2) in the longitudinal direction (L), and wherein the scaffold structure comprises the lattice supports (10) according to one or more of Claims 1 to 11 and 22 or the lattice support system according to one or more of Claims 12 to 20.
22. Lattice support according to Claim 1,

    - characterized in that

    - the geometry of the upper/lower flange (20.1, 20.2; 22.1, 22.2) is designed in such a way that the ratio of the width (B2) of the groove (30) to the outside diameter (B1) of the flange (20, 22) is less than 0.4, in particular in the region between 0.3 and 0.4.

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