DE19714996C2 - Lattice girders for the production of mobile buildings - 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 producing mo biler buildings, especially trade fairs and exhibition stands according to the preamble of claim 1.

Lattice girders are used in construction for the production of span or in mechanical engineering, for example for manufacturing the pillars or the boom of construction cranes or the like. ver turns. They usually consist of steel profiles with the lattice structure and welded to other beams or are riveted. Such lattice girders are suitable both because of their weight, and therefore not for the production mobile buildings, in particular trade fair and exhibition stands the because their assembly and disassembly is far too complex is.

For the manufacture of such fair and exhibition stands but also known building systems where you have an octagonal stand columns with longitudinal grooves are used, in which with Hil fe of suitable turnbuckles cross members very simple and can be used quickly but also very stably ("Octanorm" system from Octanorm-Vertriebs-GmbH for building elements  te in Filderstadt). Such systems are suitable to a certain extent Scope. For the surge more mobile, quickly open and close buildings that can be dismantled again, for larger self-supporting ceilings However, such systems are not without structure res suitable. Truss systems are used here provided by connecting nodes (EP 0 393 090 B1) into which beaded ends are hung from rods can.

From US-A-3 111 207 a lattice girder is the ge called known type, which is designed in lightweight construction and is therefore also suitable for the production of mobile buildings. The lattice girder shown there consists of several in parallel mutually extending metal profiles, which are transversely between they have truss-like lattice structures are held together. Three hollow profiles are one Beam with a cross section of an isosceles triangle put together. Some of the hollow profiles are also included a slot open to the outside, which is optional can be closed.

Support columns in hollow form are known from US-A-5 271 204, which are used to arrange vertical support arms. For decorative Design has provided additional strips there, the au are pluggable over the corners of the column.

The present invention has for its object a To design lattice girders of this type so that it can be used as a supplement of existing stand construction systems and for which Possibility of special aesthetic effects is.

To solve this problem, the lattice girder provided that the hollow profile on the Vertex of the triangle with symmetrically arranged chambers ver can be seen and each of the other two hollow profiles with spie gel symmetrical to that in the middle between the same length  Legs extending plane arranged hollow chambers verse hen is that at least a part of the hollow chambers of all hollow profiles on their outer wall with an open to the outside Slot is provided and that each hollow section has three chambers has, each with an outwardly open slot are provided, with two of the slots to one Slot are directed in an adjacent hollow profile, while the third slot in one of the triangular cross cut away outward chamber is arranged.

With this configuration, the new lattice girder can be attached to the with slotted hollow chambers with chip locks for Connection of known components can be provided. It is also possible to use these slots for attaching additional parts for example of lighting installations or also for on slide the outer edges of decorative panels to use so that the lattice girder becomes an aesthetic Can be a component.

This configuration also allows decorative items to be inserted ration plates in the slots facing each other th chambers, the chambers associated with these slots are to be designed large enough to insert the plate channel guarantee.

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

In a further development of the invention, all hollow profiles with egg ner formed in cross section circular Qussen wall, the through several, partially radially running inner walls with egg Nem concentrically arranged circular tube core are connected. This configuration creates stable hollow profiles that  but look elegant and made of light metal, for example, like aluminum. The circular tube core offers the possibility of connections in a known manner to be able to make or, as will be mentioned later is to put end plates on the ends of the hollow profiles Zen.

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 three corner plates for connection to the front ends of the hollow profiles used, for example, with the circular tube core can be screwed.

These triangular plates can be a further development of the invention with coupling means for connecting additional lattice girders or be provided for connection to pillars, the Kupp means in a first embodiment of two with Ver stiffening ribs made bolts, their free Ends of hanging heads for column-like fasteners Have hanging grooves. This columnar attachment pieces can, for example, on the previously mentioned place known pillars, and they have annular Insertion grooves for the coupling heads on. Lattice girders according to the invention are in this way very easy to arrange across to known pillars or can be coupled in other ways with known systems become.

In a further development of the invention, the coupling means but also best of openings for inserting plug pins hen attached to the fasteners. On the se way it will also be possible to lattice girders after the inven to use themselves as pillars and use them over their  Triangular panels with transverse lattice girders or with to combine other profile parts.

The invention is in the drawing based on Ausführungsbei play shown, which are explained below. It shows gene:

Fig. 1 is a schematic perspective view of a lattice girder according to the invention with two to be arranged at its ends triangular plates,

Fig. 2 shows an end of a lattice girder according to the invention, the front end of a sen Dreickecksplatte Kupp with treatment products for connection with a column-like connection piece has,

Fig. 3 is an illustration of a cross section through the Git terträger of FIG. 1 with inserted decorative plates and sealing strips,

Fig. 4 shows the partial view of a lattice girder according to the invention it, on which a wiring strip is mounted with a headlamp,

Figure 5 leuchtungsmitteln. The girder according to the invention with sides arranged decoration boards and integrated Be,

Fig. 6 shows the configuration of a lattice girder according to the invention It as a support column with correspondingly image th end-side triangular plates,

Fig. 7 shows the girder of FIG used as a support column. 6 with an attached columnar connection head according to FIG. 2 and two arranged thereon, as a cross-member serving lattice girders according to the invention, as well as with the possibility of an axially mountable further truss,

Fig. 8, an embodiment similar to FIG. 7, in which however instead of an additional truss, a known pillar axially to the first, the nenden girder is provided as a support column,

Fig. 9 is a schematic representation of the use of several lattice girders according to the invention for constructing an exhibition stand,

Fig. 10 is a schematic representation of the use of kengewölbes he inventive lattice girders to build a Dec,

Fig. 11 is an enlarged view of a portion of the illustration of Fig. 2,

Fig. 12 is an exploded view of the connection head of Fig. 11, and

A Fig. 13 enlarged part-section through the profile of the mounting head according to FIGS. 11 and 12.

In Figs. 1 to 3, a lattice girder according to the invention is shown which is made up of three hollow profiles 1, 2 and 3, which may be, for example, provides Herge as extruded aluminum. These three hollow profiles 1 , 2 and 3 are aligned parallel to one another and, as the cross section of FIG. 3 shows, are joined together by a lattice structure 4 formed between them to form a carrier with a cross section of an isosceles triangle. The grid structure 4 is welded on. It consists in the exemplary embodiment from essentially obliquely to the Längenach sen of the hollow profiles 1 to 3 triangular structures.

Fig. 3 shows that the two hollow profiles 2 and 3 are identical, but are mirror-symmetrical to a plane 5 , which runs in the middle of the two equal legs 6 of the triangular cross section and through the intersection of these two legs 6 . At this triangular tip, the hollow profile 1 is arranged, but is formed on the other than the hollow profiles 2 and 3 , which lie with their axes at the intersection of the legs 6 with the base line 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 the partitions running parallel to the legs ver from further partitions to form 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 ver with an outwardly to the profile 3 and 2 open slot 15 see, the slot 15 of the chamber 13 in the illustrated embodiment is closed by a profile strip 16 and in the slot 15 of the chamber 14th an edge of a de coration plate 17 is received. The chamber 12 has a slot 18 open to the outside, the longitudinal axis of which coincides with the central plane 5 .

The hollow profiles 2 and 3 also have a circular tube core 8 , from which five partitions to the outer Rin grohrwand extend, which form five hollow chambers 19 , 20 , 21 , 22 and 23 . Of these chambers, the chambers 20 , 21 and 23 are in turn provided with slots 15 which are open to the outside, a profile strip 16 or an edge of the decorative plate 17 being received in the slot of the chamber 23 in analogy to the configuration of the chambers 13 and 14 . The slots of the chambers 21 are also arranged so that they face each other. They can optionally be closed with profile strips 16 , as indicated in the left half of FIG. 3, or a decorative plate 17 , similar to that shown on the right side of FIG. 3, can be inserted into these slots. The other slots 15 of the chambers 20 are open to the outside. The longitudinal axis of each is arranged symmetrically to the central plane 5 in a plane parallel to the plane 5 .

Fig. 1 shows that the ends of the three hollow sections 1 to 3 can be covered by triangular plates 24 , which can be BEFE Stigt for example using screws not shown in detail on the circular tube core 8 of the profiles 1 to 3 . The plates 24 thus close the end faces of the lattice girder, which, as can be seen in particular in FIG. 5, can be formed by the arrangement of decorative plates 17 on the triangle sides to form a structural element which is closed on all sides and which, in particular in trade fair and exhibition construction, is used as a special eye-catcher can serve.

Fig. 2 shows that on the triangular plates 24 a coupling agent 25 in the form of two stiffeners 26 guided in corresponding ribs 27 is screwed. The free ends of the bolts 27 are provided with Einhing heads 31 of larger diameter, which can be hung in accordance with FIG. 2 from above into the retaining grooves 28 of a tubular connection head 29 in that the octagonal cross-section of the connection head 29 by two around current Annular grooves 30 is interrupted, into which the hanging heads 31 are inserted radially and then axially placed behind the grooves 28 . Two wing screws 32 , which can be tightened by hand, then ensure the attachment of the coupling means 25 to the triangular plate 24 and the lattice girder attached to it.

FIGS. 4 and 5 show first of two lattice girder according to the invention in an embodiment of FIG. 1 with the front side patch triangle plates 24, wherein in Ausführungsbei game of FIG. 4 over not shown in detail turnbuckles in one of the chambers 13 or 14 (Fig. 3 ) an Elektroinstallati on profile 33 is mounted, which in turn, as shown schematically, can be used for the displaceable arrangement of a headlight 34 . The Fig. 5, however, shows the Mög friendliness, the end face backwards with the triangular plate 24 closed lattice girder with the hollow profile 1 to be fixed up in a manner not shown and to complete each with decoration plates 17 fully outward to so that it used as a kind of structural member can be and, as shown in Fig. 5, in the downward-facing decoration plate can also be equipped with integrated light sources 35 .

FIGS. 6 to 8 establish first to the fastening according to Fig. 2 in. Fig. 7 shows the connection head 29 on which two Git terträger according to the invention on the coupling means 25 and the triangular plates 24 are mounted transversely in the manner explained with reference to FIG. 2. Here is this connection head 29 with its apparent from Fig. 2 lower plug 36 into a visible from Fig. 6 on receiving openings 37 of a triangular plate 24 which serves here as the top end of a lattice girder according to the invention, which is used as a pillar . In this way, three of the lattice girders according to the invention form a room corner as shown in FIG. 7 (or 8). Of course, it would still be possible to connect further cross members to the connection head 29 .

But the FIG. 2 also shows that the connection head 29 is provided on its side facing away from the plug-in pin 36 side with a ring flange 39 which has a central opening 38 that is insertable into the now again a plug pin 40 and be fastened, which at a triangular plate 24 according to FIG . In this way, as shown in FIG. 7, it becomes possible to extend the lattice girder axially upwards as a support column.

As FIG. 8 also shows, it is possible, the con nection head 29 the previously already mentioned spigot organize 40 zuzu and set up with the aid of a known profile column 41 with an octagonal cross-section and with grooves in the nature of grooves 28 of the connection head 29. In this case it becomes possible to combine one of the known building systems for trade fair and exhibition buildings, as it is sold by the applicant, 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 girder stemteilen in connection with other Messebausy as they are located already on the market. The display stand according to Fig. 9 there are a plurality of grid support used according to the invention, which now sign with the reference are 42 is provided. Three of these lattice girders 42 are attached to standard columns 44 of a commercially available type, which are provided with a connection head 29 , which is additionally clad in the exemplary embodiment. At this connection head are the coupling means 25 and on this and the triangular plates 24, the lattice girders 42 are suspended. This Git terträger and the columns 44 are supplemented by commercially available pillars 41 and corresponding wall panels 45 to the ausgebestell th stand.

Fig. 10 shows that z. B. with the help of three lattice girders can manufacture 42 vaulted ceiling constructions if corresponding and already on the market arc parts 43 at the open slots of the chambers 20 ( FIG. 3) of the hollow profiles 3 and 2 are arranged. The new lattice girders thus allow an increase in the possible uses of existing components for trade fair and exhibition buildings. They thus complement such exhibition stand systems, but can of course also be used without such parts, for example in the manner shown in FIG. 7, as light and fast but stable assembly components.

Fig. 11 shows the connecting head 29 which, as will be also explained in reference to FIGS. 12 and 13, consists of egg nem tubular hollow profile which at the outer periphery with axially extending slots 50 (and grooves 28 of FIG. 2 ) is provided, which open into axially extending chambers 51 . These hollow chambers 51 are designed so that they can accommodate the suspension heads 31 of the bolts 29 . Of course, it would also be possible, instead of the triangular plates 24 with the coupling means 25, to accommodate other suspension heads 31 from other carriers, for example from carriers in which the bolts 27 are aligned with two parallel profile tubes that are connected to one another by a flat grid . In this way, the connection of flat lattice girders would be possible.

Fig. 11, but in particular Fig. 12 clearly show that the columnar tube section of the connection head 29 is broken with two spaced-apart annular grooves 30 , the axial dimension of which is large enough to accommodate the hanging heads 31 in the radial direction on the axis of the Rohrab section of the connecting head 29 to be inserted and then axially to be able to move downward into the chambers 51 . However, the Fig. 11 and 12 also show that the pipe section of the connection head up and down by a respective annular flange 39 is closed off, is mounted by means of screws 53 directly at the front end of the pipe section. The screw ben 53 reach through recesses 54 of the ring flange 39 and can engage in inner grooves 55 of the pipe section and be screwed there. In the same way, the lower ring flange 39 can be fastened, to which a hollow cylindrical connecting piece 36 can also be screwed in the same manner with a front plate 56 in the same way, the screws 53 also being able to engage here through corresponding recesses 54 '.

As can be seen in particular from Fig. 13, parallel to the hanging grooves 50 and radially within the same on the inside of the chambers 51 further grooves 57 are provided, which can be used for the fact that commercially available turnbuckles of known construction systems can be introduced, which in turn can also be used 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.

Serve FIGS. 11 and 12, finally, can still be seen that can be used in the Einhängenuten 50 and in the chambers 51 sliding blocks 58 of the annular grooves 30 here, which rest on the lower annular flange 39 and in this way to Höhenein position of the hinged insertion heads 31 can. By changing the sliding blocks, it is therefore also possible in a number of ways to vary the height adjustment, for example of the lattice girder according to FIG. 2, on the connection head 29 .

Claims (16)

1. Lattice girder for the production of mobile buildings, in particular from trade fair and exhibition stands, consisting of several metal profiles running parallel to one another, which are held together by truss-like lattice-like structures, with three hollow profiles ( 1 , 2 , 3 ) to form a girder with one Cross section of an isosceles triangle are joined together, characterized in that the hollow profile ( 1 ) is provided at the top of the triangle with symmetrically arranged hollow chambers and each of the other two hollow profiles ( 2 and 3 ) with mirror symmetry to that in the middle between the equally long legs ( 6 ) duri fenden level ( 5 ) arranged hollow chambers is provided that at least a part of the chambers of each hollow profile is seen on its outer wall with an outwardly open slot ( 15 , 18 ), and that each hollow profile ( 1 to 3 ) has three chambers ( 12 , 13 , 14 or 20 , 21 , 23 ), each with a Outside open slot are provided, wherein two of the slots ( 15 ) are directed to a slot in an adjacent hollow profile, while the third slot ( 18 ) is arranged in a white from the triangular cross-section to the outside send chamber ( 12 and 20 ) . 2. Lattice girder according to claim 1, characterized in that each hollow profile ( 1 to 3 ) is designed as a tube with a cross-sectionally circular outer wall, which is connected by a plurality of radially extending inner walls with a concentrically arranged circular tube core ( 8 ) . 3. Lattice girder according to claim 1 or 2, characterized in that the third slot ( 18 ) of the hollow profile lying at the top of the triangle ( 1 ) lies in the plane of symmetry ( 5 ) extending between the legs ( 6 ) of equal length. 4. Lattice girder according to one of claims 1 to 3, characterized in that the third slot ( 15 ) of the two the base line ( 7 ) of the triangle enclosing hollow profiles ( 2 and 3 ) in a parallel to the plane of symmetry ( 5 ) duri fenden plane lies. 5. Lattice girder according to one of claims 1 to 4, characterized in that profile strips ( 16 ) are provided for closing the slots ( 15 , 18 ). 6. Lattice girder according to one of claims 1 to 5, characterized in that decorative plates ( 17 ) are provided for insertion into the mutually facing slots ( 15 ), and that the chambers associated with these slots ( 13 , 14 or 21 and 23 ) are large are designed to ensure the insertion of the plate edges. 7. Lattice girder according to one of claims 1 to 6, characterized in that triangular plates ( 24 ) to the end ends of the hollow profiles ( 1 to 3 ) can be attached. 8. Lattice girder according to claim 7, characterized in that the triangular plates ( 24 ) are equipped with coupling means ( 25 , 37 ) for connecting further lattice girders or for connection to standing columns ( 41 ). 9. Lattice girder according to claim 8, characterized in that the coupling means consist of two with stiffening ribs ( 26 ) guided bolts ( 27 ), the free ends of which have a hanging heads ( 31 ) for columnar connection heads ( 29 ) with a hanging grooves ( 28 ). 10. Lattice girder according to claim 8, characterized in that the coupling means consist of openings ( 38 ) for inserting plug pins ( 36 , 40 ) which are attached in the connection heads ( 29 ) or on triangular plates ( 24 ). 11. Connection head, in particular for a lattice girder according to claim 1, consisting of a tube section ( 29 ) with circumferentially distributed, axially extending hook grooves ( 50 ) for hooking tendons of cross members ( 42 ), characterized in that the hook grooves by annular grooves ( 30 ) are interrupted, which are used for the radial insertion of suspension heads ( 31 ) which are connected to the cross members ( 42 ). 12. Connection head according to claim 11, characterized in that the tube section ( 29 ) is completed on both ends with ring flanges ( 39 ). 13. Connection head according to claim 12, characterized in that the tube section ( 29 ) is provided with internal grooves ( 55 ) which serve as fastening openings for screws ( 53 ) for attaching the ring flanges ( 39 ). 14. Connection head according to claim 12, characterized in that a hollow cylindrical connector ( 36 ) is provided with an end plate ( 56 ) which can be attached to egg NEN the ring flanges ( 39 ). 15. Connection head according to one of claims 11 to 14, characterized in that parallel to the suspension grooves ( 50 ) and radially within the same further grooves ( 57 ) are provided for attachment of commercially available turnbuckles. 16. Connection head according to one of claims 11 and 15, characterized in that sliding blocks ( 58 ) for insertion into the hanging grooves ( 50 ) and for height adjustment of the hanging heads ( 31 ) are provided.