EP0973985B1 - Lattice beam for the production of mobile constructions - Google Patents

Abstract

Exhibition stands are constructed using a lattice beam comprising several parallel hollow metal sections (1, 2, 3) which are held together by lattice structures. The hollow sections are assembled to form a beam with an isosceles triangular cross-section in which the hollow section (1) at the apex is symmetrical and the two other hollow sections (2,3) are mirror-symmetrical to the plane (5Ü running between the sides of equal length of the triangle. At least part of the chambers formed in the hollow sections is provided with a slot (15, 18) open to the outside. Preferably, the hollow sections are cubes with an external circular cross section and having internal walls, which partly run radially, connecting to a central core (8).

Description

The invention relates to a lattice girder for the production of mobile buildings, in particular of fair and exhibition stands, consisting of several metal profiles running parallel to each other, passing through transversely between them running truss-like lattice structures are held together, where three hollow profiles to a carrier with a cross section of an isosceles Triangles are joined together.

Lattice girders are used in construction to produce surges or in mechanical engineering, for example, to manufacture the pillars or the Jib of construction cranes or the like used. They usually consist of Steel profiles that are welded to the lattice structure and other beams or riveted. Such lattice girders are suitable both because of their weight, and therefore not for the production of mobile buildings, in particular of trade fair and exhibition stands because their assembly and a Disassembly is far too complex.

Building systems are also used to manufacture such trade fair and exhibition stands known, where you have octagonal columns with longitudinal Grooves used in the use of suitable turnbuckles Cross members can be used very easily and quickly, but also very stably (Octanorm system from Octanorm Vertriebs-GmbH for components in Filderstadt). Such systems are suitable up to certain consequences. For the Surges of mobile buildings that can be quickly assembled and dismantled, for larger ones Self-supporting ceiling structures, however, are not such systems suitable without further ado. Truss systems are used here provided by connecting nodes (EP 0 393 090 B1) into which with beads provided ends of rods can be hung.

From US-A-3 111 207 a lattice girder of the type mentioned is known which is designed in lightweight construction and therefore also for production mobile buildings is suitable. The lattice girder shown there consists of several metal profiles running parallel to each other, which cross through between Running truss-like lattice structures held together are. Three hollow sections made of sheet metal are included in a beam a cross section of an isosceles triangle joined together. On Part of the hollow profiles is also with an outside before completion open slot provided, which serves to the interior during the Keep manufacturing open. These slots are made by bending Wall parts or by inserting sealing strips before finishing locked.

The invention has for its object a lattice girder of the beginning mentioned type in such a way that it complements existing trade fair construction systems is usable and for the possibility of special aesthetic Effects is suitable

To solve this problem, the one mentioned above is used for a lattice girder Kind provided that the hollow profile at the top of the triangle with symmetrical arranged hollow chambers and the other two hollow profiles with mirror-symmetrical to that in the middle between the legs of equal length extending plane arranged hollow chambers are provided and that at least part of the hollow chambers of all hollow profiles on their outer wall is provided with a slot open to the outside.

This configuration allows the new lattice girder to be fitted with slots provided hollow chambers with turnbuckles for connecting known Components are provided. But it is also possible to attach these slots of additional parts, for example lighting installations or also for inserting the outer edges of decorative panels use, so that the lattice girder becomes an aesthetic Can be a component.

In a further development of the invention, all hollow profiles are tubes formed with an outer circular cross section through several inner walls, some of which run radially, with one concentrically arranged circular tube core are connected. By this configuration creates stable hollow profiles, but look elegant and made of light metal, for example Aluminum. The circular tube core offers the possibility of making connections in a known manner or, as will be mentioned later, Place end plates on the ends of the hollow profiles.

In a further development of the invention, each hollow profile can have three Chambers with slots open to the outside, wherein two each of the slots to form a slot in an adjacent one Hollow profile are directed towards the third Slot each in one away from the triangular cross section pointing chamber is arranged. This configuration enables inserting decorative panels in the previously mentioned manner in the manner facing the slots Chambers, the chambers associated with these slots are to be designed large enough to insert the plate edges to ensure.

The outward-facing chambers with their slots enable as already indicated, the connection of additional columns or carriers with the help of known turnbuckles. The For this purpose, slots and the chambers can be attached to the Known exhibition construction systems provided mounting slots be adjusted.

In a further development of the invention it can be provided that one the slots that are not needed by decorative Profiles closed.

In a further development of the invention it is provided that triangular plates for connection to the ends of the hollow profiles used, for example, screwed to the circular tube core can be.

These triangular plates can be further developed in the invention with coupling means for connecting additional lattice girders or be provided for connection to pillars, the coupling means in a first embodiment of two with stiffening ribs guided bolts exist, their free Ends of hanging heads for columnar connection heads with hanging grooves exhibit. Leave these columnar connection heads refer, for example, to the known ones mentioned above Stand columns and they have insertion recesses for the suspension heads of the coupling means. girder according to the invention are very simple in this way Way to arrange transverse to known columns or can in otherwise coupled with known systems.

In a further development of the invention, the coupling means but also consist of openings for inserting plug pins, which are attached to the connection heads. To this Way it also becomes possible to use lattice girders according to the invention themselves to use as pedestals and they over their triangular panels with transverse lattice girders or with others To combine profile parts.

Fig. 1

die schematische perspektivische Darstellung eines Gitterträgers nach der Erfindung mit zwei an seinen Stirnenden anzuordnenden Dreiecksplatten,

Fig. 2

ein Ende eines Gitterträgers nach der Erfindung, dessen Stirnende eine Dreickecksplatte mit Kupplungsmitteln zum Verbinden mit einem säulenartigen Verbindungsstück aufweist,

Fig. 3

die Darstellung eines Querschnittes durch den Gitterträger der Fig. 1 mit eingeschobenen Dekorationsplatten und Verschlußleisten,

Fig. 4

die Teildarstellung eines Gitterträgers nach der Erfindung, an dem eine Elektroinstallationsleiste mit einem Scheinwerfer angebracht ist,

Fig. 5

den Gitterträger nach der Erfindung mit allseitig angeordneten Dekorstionsplatten und integrierten Beleuchtungsmitteln,

Fig. 6

die Ausgestaltung eines Gitterträgers nach der Erfindung als Standsäule mit entsprechend ausgebildeten stirnseitigen Dreiecksplatten,

Fig. 7

den als Standsäule verwendeten Gitterträger der Fig. 6 mit einem aufgesetzten säulenartigen Anschlußkopf nach Fig. 2 und zwei daran angeordneten, als Querträger dienenden Gitterträgern nach der Erfindung, sowie mit der Möglichkeit eines axial aufsetzbaren weiteren Gitterträgers,

Fig. 8

eine Ausgestaltung ähnlich Fig. 7, bei der jedoch anstelle eines weiteren Gitterträgers eine bekannte Standsäule axial zu dem ersten, als Standsäule dienenden Gitterträger vorgesehen wird,

Fig. 9

die schematische Darstellung des Einsatzes mehrerer Gitterträger nach der Erfindung zum Aufbau eines Messestandes,

Fig. 10

die schematische Darstellung der Verwendung von erfindungsgemäßen Gitterträgern zum Aufbau eines Dekkengewölbes,

Fig. 11

eine vergrößerte Darstellung eines Teiles aus der Darstellung der Fig. 2,

Fig. 12

eine Explosionsdarstellung des Anschlußkopfes der Fig. 11, und

Fig. 13

einen vergrößert dargestellten Teilschnitt durch das Profil des Befestigungskopfes nach den Fig. 11 und 12.

The invention is shown in the drawing using exemplary embodiments which are explained below. Show it:

Fig. 1

2 shows a schematic perspective illustration of a lattice girder according to the invention with two triangular plates to be arranged at its ends,

Fig. 2

one end of a lattice girder according to the invention, the front end of which has a triangular plate with coupling means for connecting to a columnar connecting piece,

Fig. 3

1 shows a cross section through the lattice girder of FIG. 1 with inserted decorative panels and sealing strips,

Fig. 4

the partial representation of a lattice girder according to the invention, on which an electrical installation bar is attached with a headlight,

Fig. 5

the lattice girder according to the invention with decorative panels arranged on all sides and integrated lighting means,

Fig. 6

the design of a lattice girder according to the invention as a pillar with appropriately designed front triangular plates,

Fig. 7

6 with a column-like connection head according to FIG. 2 and two lattice girders according to the invention arranged thereon, serving as cross girders, and with the possibility of an additional lattice girder which can be placed axially,

Fig. 8

an embodiment similar to FIG. 7, in which, however, instead of a further lattice girder, a known standing column is provided axially to the first lattice girder serving as a standing column,

Fig. 9

the schematic representation of the use of several lattice girders according to the invention for setting up a trade fair stand,

Fig. 10

the schematic representation of the use of lattice girders according to the invention for building a ceiling vault,

Fig. 11

3 shows an enlarged illustration of a part from the illustration in FIG. 2,

Fig. 12

an exploded view of the terminal head of FIG. 11, and

Fig. 13

an enlarged partial section through the profile of the mounting head according to FIGS. 11 and 12.

1 to 3 is a lattice girder according to the invention shown, which is composed of three hollow profiles 1, 2 and 3, which are made, for example, as extruded aluminum profiles could be. These three hollow profiles 1, 2 and 3 are aligned parallel to each other and, like the cross section of the Fig. 3 shows by truss running between them trained lattice structures 4 to a carrier with a Cross section of an isosceles triangle joined together. The grid structure 4 is welded on. It exists in the embodiment essentially from oblique to the longitudinal axes of the hollow profiles 1 to 3 triangular structures.

3 shows that the two hollow profiles 2 and 3 identically formed, but mirror-symmetrical to one Level 5 are laid, the same length in the middle of the two Leg 6 of the triangular cross section and through the The intersection of these two legs 6 runs. At this Triangular tip, the hollow profile 1 is arranged, but different is designed as the hollow profiles 2 and 3, which with their axes at the intersection of the legs 6 with the Baseline 7 of the triangle.

The hollow profile 1 has an outer wall with a circular cross section and concentric to this outer wall a circular tube core 8, from which four partitions to form four hollow chambers 9, 10, 11 and 12 and from those running parallel to the legs Partitions from other partition walls for education of two further chambers 13 and 14 are provided. All Partitions are arranged symmetrically to the central plane 5. The chambers 13 and 14 are with an outside and provided in each case with slot 15 open to profile 3 or 2, the slot 15 of the chamber 13 in the illustrated Embodiment closed by a profile bar 16 and in the slot 15 of the chamber 14 is an edge of a decorative plate 17 is included. The chamber 12 has one outwardly open slot 18, the longitudinal axis of which with Middle level 5 coincides.

The hollow profiles 2 and 3 also have a circular tube core 8, from which there are five partitions to the outer ring tube wall extend the five hollow chambers 19, 20, 21, 22 and 23 form. Of these chambers, chambers 20, 21 and 23 again provided with outwardly open slots 15, wherein in the slot of the chamber 23 each analogous to the training the chambers 13 and 14 a profile strip 16 and an edge the decorative plate 17 is added. The slots of the Chambers 21 are also arranged to face each other are. You can optionally use profile strips 16 are closed, as indicated in the left half of FIG. 3 is, or it can be a decorative plate 17, similar as shown on the right side of FIG. 3 Slots are inserted. The other slots 15 of the Chambers 20 are open to the outside. Their longitudinal axis lies in each case arranged symmetrically to the central plane 5 in a parallel to level 5 level.

1 shows that the end faces of the three hollow profiles 1 to 3 can be covered by triangular plates 24, the for example using not shown Screws attached to the circular tube core 8 of the profiles 1 to 3 can be. The plates 24 thus close the end faces of the lattice girder from, as in particular in FIG. 5 can be recognized by the arrangement of decorative panels 17 on the sides of the dirt to form a closed on all sides Structural element can be formed, which in particular Trade fair and exhibition construction serve as a special eye-catcher can.

Fig. 2 shows that on the triangular plates 24, a coupling agent 25 in the form of two in corresponding rib stiffeners 26 guided screw bolt 27 is screwed. The free ends of the bolts 27 are with hanging heads 31 larger diameter, which according to Fig. 2 from above into the retaining grooves 28 of a tubular Let connection head 29 hang in that the itself octagonal cross section of the connection head 29 through two circumferential Ring grooves 30 is interrupted, in which the suspension heads 31 inserted radially and then axially behind the Grooves 28 are set. Two thumbscrews 32 by Are tightenable by hand, then ensure the attachment of the Coupling means 25 with the triangular plate 24 and the attached Girder.

Figures 4 and 5 initially show two lattice girders of the invention in an embodiment according to FIG. 1 with the face attached triangular plates 24, wherein in the embodiment 4 about turnbuckles not shown in one of the chambers 13 or 14 (Fig. 3) an electrical installation profile 33 is attached, which in turn, as schematically shown for the displaceable arrangement of a headlight 34 can be used. 5 shows the possibility the end with the triangular plate 24 Lattice girder with the hollow profile 1 upwards in not shown in detail and fasten each with Decorative plates 17 to complete the outside, so that it can be used as a kind of structural element and 5 shows, in the downward-facing decorative plate also equipped with integrated light sources 35 can be.

Figures 6 to 8 first tie to the type of attachment 2 to. 7 shows the connection head 29, on the two lattice girders explained in the manner with reference to FIG. 2 according to the invention via the coupling means 25 and the triangular plates 24 are mounted transversely. Here is now this connection head 29 with its apparent from Fig. 2 lower spigot 36 into a receiving opening shown in FIG. 6 37 of a triangular plate 24 inserted here as the top end of a lattice girder according to the invention, which is used as a pillar is. Three of the lattice girders according to the invention form on this 7 (or 8) a corner of the room. Of course it would be still possible to connect additional cross beams to the connection head 29.

2 also shows that the connection head 29 on his side facing away from the plug pin 36 with an annular flange 39 is provided, which has a central opening 38, in which a plug 40 can now be inserted and can be fastened, which according to a triangular plate 24 Fig. 6 is attached protruding end. It will be on this 7, possible, that serving as a pedestal Extend lattice girder axially upwards.

However, as FIG. 8 also shows, it becomes possible to use the connection head 29 assign the previously mentioned plug 40 and with the help of a known profile column 41 octagonal cross-section and with grooves in the manner of the grooves 28 of the connection head 29 to put on. In this case it will possible, one of the well-known building systems for trade fair and exhibition buildings, as distributed by the notifier, to combine with the lattice girders according to the present invention.

Of course, it is also possible, as has already been indicated with reference to FIG. 3, to utilize the slot 18 of the chamber 12 of the profile 1 and the slots 15 of the two chambers 20 of the profiles 2 and 3 to make commercially available components using turnbuckles to combine with the lattice girders according to the invention.
FIGS. 9 and 10 show two examples of the use of the new lattice girders in connection with other parts of the trade fair construction system as are already on the market. 9, several lattice girders according to the invention are used, which are now provided with the reference number 42. Three of these lattice girders 42 are attached to standard columns 44 of a commercial type, which are provided at the top with a connection head 29, which is additionally clad in the exemplary embodiment. The coupling means 25 and the lattice girders 42 are suspended from this connection head and via these and the triangular plates 24. These lattice girders and the columns 44 are supplemented by commercially available standing columns 41 and corresponding wall plates 45 to the stand shown.

Fig. 10 shows that e.g. with the help of three lattice girders Can manufacture 42 vaulted ceiling constructions, if appropriate and already on the market arc parts 43 at the open slots of the chambers 20 (Fig. 3) Hollow sections 3 and 2 are arranged. The new lattice girders thus allow an increase in the possible uses existing components for trade fair and exhibition buildings. she thus complement such stand construction systems, but can be of course also without such parts, for example in of the type shown in Fig. 7 as light and fast, however Use stably assembled exhibition components.

11 shows the connection head 29, which, as well 12 and 13 will be explained, from a tubular hollow profile, which with the outer circumference axially extending slots 50 (or grooves 28 according to FIG. 2) is provided, which also extends axially in the chambers 51 lead. These hollow chambers 51 are designed so that they Hook heads 31 of the bolts 29 can accommodate. Naturally it would also be possible to replace the triangular plates 24 with the coupling means 25 other suspension heads 31 from others Carriers, for example carriers in which the Bolt 27 with two parallel to each other Profile tubes are aligned with each other through a flat Grids are connected to record. That way would be the connection of flat lattice girders possible.

11, but in particular FIG. 12 clearly show that the columnar tube section of the connection head 29 with two spaced-apart annular grooves 30 interrupted is whose axial dimension is large enough to Hanging heads 31 in the radial direction on the axis of the pipe section of the connecting head 29 and then axially in to be able to move the chambers 51 downwards. 11 and 12 also show that the pipe section of the connection head Completed at the top and bottom by an annular flange 39 is that with the help of screws 53 immediately is attached to the front end of the pipe section. The screws 53 reach through recesses 54 of the ring flange 39 through and can engage in inner grooves 55 of the pipe section and screwed there. In the same way fix the lower ring flange 39, to which also a hollow cylindrical connector 36 with an end End plate 56 are screwed in the same way can, here also the screws 53 by appropriate Can take recesses 54 '.

As can be seen in particular from FIG. 13, are parallel to the hanging grooves 50 and radially within the same on the Inside of the chambers 51 further grooves 57 are provided can be exploited that standard turnbuckles known building systems can be introduced via which in turn also commercially available cross members on the pipe section of the connection head 29 can be attached. The Connection head 29 can therefore be used universally.

11 and 12 finally show that in the hanging grooves 50 and 51 in the chambers sliding blocks 58 of the annular grooves 30 can be used forth on the lower Ring flange 39 rest and in this way for height adjustment of the suspended hanging heads 31 can serve. By changing the sliding blocks, it is also easier Way possible, for example the height adjustment Lattice girder according to FIG. 2 to vary on the connection head 29.

Claims (11)

1. Lattice beam for making mobile structures, in particular fair and exhibition stands, consisting of several metal sections extending parallel with one another, which are held together by trellis-type lattice structures, three hollow sections (1, 2, 3) being assembled to make up a support having the cross section of an isosceles triangle.
   characterised in that
   the hollow section (1) disposed at the apex of the triangle is provided with symmetrical hollow chambers and the other two hollow sections (2 and 3) are provided with hollow chambers arranged symmetrically in mirror image relative to the plane (5) running in the middle between the sides (6) of equal length, and at least some of the chambers of all hollow sections are provided with a slit (15, 18) on their external wall open towards the outside.
2. Lattice beam as claimed in claim 1, characterised in that all hollow sections (1 to 3) are provided as tubes with a circular external cross section and are joined to a concentrically disposed tubular core (8) by means of several internal walls which extend partly radially.
3. Lattice beam as claimed in claim 2, characterised in that every hollow section (1 to 3) is provided with three chambers (12, 13, 14 or 20, 21, 23) with outwardly open slits, two of the respective slits (15) being directed towards a slit in an adjacent hollow section, whilst the third slit (18) is respectively arranged in a chamber (12 or 20) pointing away from the triangle cross section.
4. Lattice beam as claimed in claim 3, characterised in that the third slit (18) of the hollow section (1) disposed at the apex of the triangle lies in the plane of symmetry (5) extending between the sides (6) of equal length.
5. Lattice beam as claimed in claim 3, characterised in that the third slit (15) of two hollow sections (2 and 3) subtending the base (7) of the triangle lies in a plane parallel with the plane of symmetry (5).
6. Lattice beam as claimed in claim 1, characterised in that strips of section (16) are provided to close off the slits (15, 18).
7. Lattice beam as claimed in claims 1 and 3, characterised in that decorative plates (17) are provided for inserting in the mutually facing slits (15) and the chambers (13, 14 or 21, 23) associated with these slits are large enough to ensure that the plate edges can be inserted therein.
8. Lattice beam as claimed in claim 1, characterised in that triangular plates (24) can be placed on the end faces of the hollow sections (1 to 3).
9. Lattice beam as claimed in claim 8, characterised in that the triangular plates (24) are fitted with coupling means (25, 37) for connecting other lattice beams or for connecting to stand pillars (41).
10. Lattice beam as claimed in claim 9, characterised in that the coupling means consist of two threaded bolts (27) with stiffening ribs (26), the free ends of which have slot-in heads (31) for pillar-type connector heads (29) with slot-in grooves (28).
11. Lattice beam as claimed in claim 9, characterised in that the coupling means consist of openings (38) for inserting mounting pins (36, 40) which are mounted in the connector heads (29) or on triangular plates (24).

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