EP0973985A1

EP0973985A1 - Lattice beam for the production of mobile constructions

Info

Publication number: EP0973985A1
Application number: EP98912422A
Authority: EP
Inventors: Hans Bruder
Original assignee: Octanorm Vertriebs GmbH fuer Bauelemente
Current assignee: Octanorm Vertriebs GmbH fuer Bauelemente
Priority date: 1997-04-10
Filing date: 1998-02-28
Publication date: 2000-01-26
Anticipated expiration: 2018-02-28
Also published as: DE19714996C2; ES2196555T3; ES2247221T3; HK1049196A1; CN1095914C; PL336113A1; DE59808072D1; DE59813108D1; SK135499A3; ATE238471T1; EP1231340A2; CN1302184C; EP1231340A3; DE19714996A1; CN1252115A; SK286207B6; HK1027142A1; WO1998045552A1; EP1231340B1; CN1492116A

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

Lattice girders for the production of mobile buildings

The invention relates to a lattice girder for the production of mobile buildings, in particular for trade fairs and exhibition stands, consisting of a plurality of metal profiles running parallel to one another, which are held together by lattice structures that run transversely between them.

Lattice girders are used in construction for the production of overvoltages or in mechanical engineering, for example for the manufacture of pillars or the boom of construction cranes or the like. used. They usually consist of steel profiles that are welded or riveted to the lattice structure and other supports. Such lattice girders are suitable both because of their weight and because of that they are not suitable for the manufacture of mobile structures, in particular for trade fair and exhibition stands, because their assembly and disassembly is far too complex.

For the manufacture of such trade fair and exhibition stands, construction systems are also known in which octagonal pillars with longitudinal grooves are used, in which crossbeams can be inserted very easily and quickly, but also very stably with the help of suitable turnbuckles (Octanorm system of the Octanorm operating Vertriebs-GmbH for components in Filderstadt). Such systems are suitable up to certain consequences. For the surge more mobile, fast systems that can be dismantled and dismantled, however, such systems are not suitable for larger self-supporting ceiling structures. Truss systems are provided here using connecting nodes (EP 0 393 090 B1), into which the ends of rods provided with beads can be hung.

Since the use of lattice girders is also interesting for trade fair and exhibition construction for bridging larger spans or as a decorative element, the present invention is based on the object of designing a lattice girder of the type mentioned at the outset in such a way that it can be used as a supplement to existing trade fair construction systems and is suitable for the possibility of special aesthetic effects.

To solve this problem it is provided in a lattice girder of the type mentioned that three hollow profiles are joined together to form a girder with a cross section of an isosceles triangle, that the hollow profile is symmetrical at the tip of the triangle and the other two hollow profiles with mirror symmetry to that in the middle hollow chambers arranged between the planes of equal length are provided and that at least some of the hollow chambers of all hollow profiles are provided on their outer wall with a slot open to the outside.

This configuration allows the new lattice girder to be provided with chip locks on the hollow chambers provided with slots for connecting known components. However, it is also possible to use these slots for attaching additional parts, for example lighting installations or also for inserting the outer edges of decorative panels, so that in this way the lattice girder can become an aesthetic component. In a further development of the invention, all hollow profiles are designed as tubes with an outer circular cross section, which are connected to a concentrically arranged circular tube core by a plurality of inner walls, some of which run radially. This configuration creates stable hollow profiles, which, however, have an elegant appearance and can be produced, for example, from light metal, such as aluminum. The circular tube core offers, in a known manner, the possibility of making connections or, as will be mentioned later, of placing end plates on the ends of the hollow profiles.

In a further development of the invention, each hollow profile can be provided with three chambers with slots open to the outside, two of the slots being directed towards a slot in an adjacent hollow profile, while the third slot is arranged in a chamber facing away from the triangular cross section . This configuration enables decorative plates to be inserted in the aforementioned manner into the chambers facing one another with the slots, the chambers assigned to these slots being designed to be large enough to ensure the insertion of the plate edges.

The outwardly facing chambers with their slots enable, as already indicated, the connection of additional columns or supports with the help of known turnbuckles. For this purpose, the slots and the chambers can be adapted to the mounting slots provided in known exhibition construction systems.

In a further development of the invention it can be provided that the slots that are not required are closed by decorative profile strips.

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

In a further development of the invention, these triangular plates can be provided with coupling means for connecting further lattice girders or for connection to standing columns, the coupling means in a first embodiment consisting of two screw bolts guided with stiffening ribs, the free ends of which have hooking heads for columnar connecting heads with hooking grooves. These pillar-like connection heads can be placed, for example, on the previously known prior art pillars, and they have insertion recesses for the attachment heads of the coupling means. Lattice girders according to the invention can be arranged in a very simple manner transversely to known pillars or can be coupled in a different way with known systems.

In a further development of the invention, the coupling means can also consist of openings for inserting plug pins which are attached to the connection heads. In this way, it is also possible to use lattice girders according to the invention as standing columns and to combine them with their triangular plates with transverse lattice girders or with other profile parts.

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

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

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

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

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

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

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

7 shows the lattice girder of FIG. 6 used as a standing column with an attached 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 axially attachable further lattice girder,

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

9 shows the schematic representation of the use of a plurality of lattice girders according to the invention for setting up a trade fair stand, 10 shows the schematic representation of the use of lattice girders according to the invention for the construction of a ceiling vault,

11 is an enlarged view of a part from the illustration of FIG. 2,

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

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

1 to 3, a lattice girder according to the invention is shown, which is constructed from three hollow profiles 1, 2 and 3, which can be produced, for example, as extruded profiles made of 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. In the exemplary embodiment, it essentially consists of triangular structures placed obliquely to the longitudinal axes of the hollow profiles 1 to 3.

Fig. 3 shows that the two hollow profiles 2 and 3 are identical, but are laid mirror-symmetrically to a plane 5 which runs in the middle of the two legs 6 of the same length 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 designed differently than the hollow profiles 2 and 3, which each have 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 from still further partitions to form two further chambers 13 and 14 are provided. All partitions are arranged symmetrically to the central plane 5. The chambers 13 and 14 are provided with a slot 15 which is open towards the outside and in each case towards the profile 3 or 2, the slot 15 of the chamber 13 in the exemplary embodiment shown being closed by a profile strip 16 and one in the slot 15 of the chamber 14 Edge of a decorative plate 17 is added. The chamber 12 has an outwardly open slot 18, 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 partition walls extend to the outer ring tube wall, 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 decoration 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 either 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. Its longitudinal axis is arranged symmetrically to the central plane 5 in a plane running 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, the 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 off 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 sides of the dirt to form a structural element which is closed on all sides and which is particularly eye-catching in trade fair and exhibition construction can serve.

2 shows that a coupling means 25 in the form of two screw bolts 27 guided in corresponding rib reinforcements 26 is screwed onto the triangular plates 24. The free ends of the bolts 27 are provided with hook-in heads 31 of larger diameter which, according to FIG. 2, can be hooked into the holding grooves 28 of a tubular connecting head 29 from above in that the octagonal cross-section of the connecting head 29 passes through two circumferential ring grooves 30 is interrupted, into which the suspension 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 attached lattice girder.

FIGS. 4 and 5 initially show two lattice girders according to the invention in an embodiment according to FIG. 1 with triangular plates 24 placed on the end face, and in the embodiment of FIG. 4 via turnbuckles not shown in detail in one of the chambers 13 or 14 (FIG. 3 ) an electrical installation profile 33 is suspended, which in turn, as shown schematically, can be used for the displaceable arrangement of a headlight 34. 5, on the other hand, shows the possibility of fastening the lattice girder closed at the end with the triangular plate 24 with the hollow profile 1 upward in a manner not shown, and in each case with Completely lock decorative panels 17 to the outside, so that it can be used as a type of structural element and, as shown in FIG. 5, can also be equipped with integrated light sources 35 in the downward-facing decorative panel.

Figures 6 to 8 are initially based on the type of attachment shown in FIG. 2. FIG. 7 shows the connection head 29 to which two lattice girders according to the invention are attached transversely via the coupling means 25 and the triangular plates 24 in the manner explained with reference to FIG. 2. Here, this connection head 29 with its lower plug 36 shown in FIG. 2 is now inserted into a receiving opening 37 shown in FIG. 6 of a triangular plate 24, which here serves as the top end of a lattice girder according to the invention, which is used as a pillar is. 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.

2 also shows that the connection head 29 is provided on its side facing away from the plug pin 36 with an annular flange 39 which has a central opening 38, in which a plug pin 40 can now be inserted and fastened, which is attached to a triangular plate 24 is attached protruding on the end face according to FIG. 6. In this way, as shown in FIG. 7, it becomes possible to extend the lattice girder serving as a standing column axially upwards.

As FIG. 8 also shows, however, it becomes possible to assign the connection head 29 to the previously mentioned plug-in pin 40 and to use it to place a known profile column 41 with an octagonal cross section and with grooves in the manner of the grooves 28 of the connection head 29. In this case it becomes possible to use one of the known construction systems for trade fair and exhibition Position structures, as sold by the applicant, to be combined 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, a plurality of lattice girders according to the invention are used, which are now provided with the reference symbol 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, for example, with the help of three lattice girders 42 vault-like ceiling constructions can be produced if corresponding arch parts 43 which are already on the market are arranged at the open slots in the chambers 20 (FIG. 3) of the hollow profiles 3 and 2 . 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 stand components which can be assembled easily and quickly but stably. 11 first shows the connection head 29, which, as will also be explained with reference to FIGS. 12 and 13, consists of a tubular hollow profile which has axially extending slots 50 (or grooves 28 according to FIG. 2) on the outer circumference. 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 supports, for example from supports in which the screw bolts 27 are aligned with two parallel profile tubes which are connected to one another by a flat grid. In this way, the connection of flat lattice beams would be possible.

Fig. 11, but in particular Fig. 12 clearly show that the columnar tube section of the connection head 29 is interrupted by two spaced-apart annular grooves 30, the axial dimension of which is large enough to accommodate the suspension heads 31 in the radial direction on the axis of the pipe section to insert the connection head 29 and then be able to move it axially downward into the chambers 51 11 and 12 also show that the pipe section of the connection head is closed at the top and bottom by an annular flange 39, which is attached by means of screws 53 directly to the front end of the pipe section. The screws 53 penetrate 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 with an end plate 56 can also be screwed in the same way, with the screws 53 being able to reach 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, via which in turn also commercially available Cross members can be attached to the pipe section of the connection head 29. The connection head 29 can therefore be used universally.

11 and 12 finally show that slot nuts 58 can be inserted into the hanging grooves 50 and into the chambers 51 from the ring grooves 30, which rest on the lower ring flange 39 and can thus serve to adjust the height of the hanging hanging heads 31 . By changing the sliding blocks, it is therefore also possible in a simple manner to vary the height adjustment, for example of the lattice girder according to FIG. 2, on the connection head 29.

Claims

Expectations

1. Lattice girder for the production of mobile buildings, in particular from trade fairs and exhibition stands, consisting of several metal profiles running parallel to one another, which are held together by truss-like lattice structures running between them, characterized in that three hollow profiles (1, 2, 3) form a support with a cross section of an isosceles triangle are joined together so that the hollow profile (1) is symmetrical at the tip of the triangle and the other two hollow profiles (2 and 3) are arranged with mirror symmetry to the plane (5) running in the middle between the equally long legs (6) Hollow chambers are provided and that at least some of the chambers of all hollow profiles are provided on their outer wall with an outwardly open slot (15, 18).

2. Lattice girder according to claim 1, characterized in that all hollow profiles (1 to 3) are designed as tubes with an outer circular cross-section and are connected by a plurality of inner walls, some of which run radially, to a concentrically arranged circular tube core (8).

3. Lattice girder according to claim 2, characterized in that each hollow profile (1 to 3) with three chambers (12, 13, 14 or 20, 21, 23) is provided with slots open to the outside, two of the slots (15 ) are directed towards a slot in an adjacent hollow profile, while the third slot (18) is arranged in a chamber (12 or 20) pointing outward from the triangular cross section.

4. Lattice girder according to claim 3, characterized in that the third slot (18) of the hollow profile lying at the tip of the triangle (1) lies in the plane of symmetry (5) extending between the legs (6) of equal length.

5. Lattice girder according to claim 3, characterized in that the third slot (15) of the two, the baseline (7) of the triangle enclosing hollow profiles (2 and 3) lies in a plane parallel to the plane of symmetry (5).

6. Lattice girder according to claim 1, characterized in that profiled strips (16) for closing the slots (15, 18) are provided.

7. Lattice girder according to claims 1 and 3, characterized in that decorative plates (17) are provided for insertion into the mutually facing slots (15), and that the chambers assigned to these slots (13, 14 or 21 and 23) are designed large enough are to ensure the insertion of the plate edges.

8. Lattice girder according to claim 1, characterized in that triangular plates (24) can be attached to the front ends of the hollow profiles (1 to 3).

9. Lattice girder according to claim 8, characterized in that the Dreieckεplatten (24) with coupling means (25, 37) for connecting further lattice girders, or for connection to standing columns (41) are equipped.

10. Lattice girder according to claim 9, characterized in that the coupling means consist of two with stiffening ribs (26) guided screw bolts (27), the free ends of which have suspension heads (31) for columnar connection heads (29) with suspension grooves (28).

11. Lattice girder according to claim 9, 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).

12. Connection head, in particular for a lattice girder according to claim 1, consisting of a tube section (29) with axially distributed hanging grooves (50) distributed around the circumference for hanging tendons of cross members (42), characterized in that the hanging grooves are formed by annular grooves ( 30) are interrupted, which are used for the radial insertion of suspension heads (31) which are connected to cross members (42).

13. Connection head according to claim 12, characterized in that the tube section (29) is completed on both ends with ring flanges (39).

14. Connection head according to claim 13, 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).

15. 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 an annular flange (39).

16. Connection head according to claim 12, characterized in that parallel to the hanging grooves (50) and radially within the same further grooves (57) are provided for the attachment of standard turnbuckles.

17. Connection head according to claim 12 and 13, characterized in that sliding blocks (58) for insertion into the hanging grooves (50) and for height adjustment of the hanging heads (31) are provided.