SK286207B6 - Lattice beam for the production of mobile constructions - Google Patents

Abstract

Connecting head for lattice beam for the production of mobile structures, in particular fair and exhibition stands, consisting of a tubular section (29) having circumferentially distributed, axially extending grooves (50) for engaging of clamping elements of crossbeams (42), whereby the slot-in grooves are interrupted by circular grooves (30) adapted to radial introduction of slot-in heads (31) connected to the crossbeams (42).

Description

Technical field

BACKGROUND OF THE INVENTION The invention relates to a connection head for a truss for the production of mobile buildings, in particular exhibition and exhibition stands, consisting of a tube with axial suspension grooves distributed circumferentially for the suspension members of the trusses.

BACKGROUND OF THE INVENTION

They are used in the construction industry for the production of overvoltage or in mechanical engineering, for example for the production of stationary columns or arms of building cranes and the like. trusses. As a rule, they consist of steel profiles that are welded or riveted with a grid structure or other beams. Such trusses are not suitable, due to their weight, for the production of mobile buildings, especially trade fair and exhibition stands, because their assembly and dismantling are too expensive.

However, construction systems for such trade fair and exhibition stands are known, in which octagonal stationary columns with longitudinal grooves are used in which transverse beams can be inserted quickly and easily but also very stably using suitable clamping devices (Octanorm system by Octan Betriebs- Vertriebs-GmbH tur Bauelemente in Filderstadt). Such systems are suitable up to a certain carrier length. For overvoltage of mobile, quickly assembled and demountable constructions, for larger self-supporting ceiling constructions, however, such systems cannot be used unchanged. For this purpose, we have designed bar systems using connecting nodes (EP 0 393 090 B1), into which the ends of the rods equipped with a foot can be hung.

However, since the use of trusses is also of interest for trade fair and exhibition stands to bridge larger bearing lengths or as a decorative element, the present invention aims to provide a connection head in the aforementioned field of technology that can be used as a supplement to existing trade fair building systems. and is suitable as a possibility of special aesthetic effects.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a connection head in the prior art, which consists of a tube with axial suspension grooves distributed circumferentially for the suspension members of the crossbeams, the suspension grooves being interrupted by ring grooves which serve to radially insert the suspension heads associated with cross beams.

With this construction it is possible to arrange a truss, which is equipped with a connecting head, to a known stationary column.

Thus, e.g. triangular plates equipped with a coupling connected to the connection head of the truss. The coupling may comprise, in one of the first embodiments, two bolts directed by means of reinforced ribs, the free ends of which have hinged heads on connection heads with hinge grooves. The connection heads can be mounted, for example, on the previously mentioned stationary columns. The suspension is very simple by means of crab-like notches, since it is not necessary to insert the hinge heads into the axially-arranged notches from the front. The trusses can then be arranged in a simple manner transversely to known stationary columns or it can be connected in other ways to known systems.

Further advantageous embodiments of the connection head according to the invention are set forth in the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is illustrated in the drawings by means of exemplary embodiments which will be explained hereinafter.

Figure 1 shows a schematic perspective view of a truss according to the invention with two triangular plates positioned at its front ends; Figure 2 shows an end of a truss according to the invention whose front ends have a triangular plate with a coupling for connection to a columnar connector; Fig. 4 shows a partial view of a truss girder according to the invention on which a wiring strip with a reflector is fastened; Figure 5 shows a truss girder according to the invention with decorative panels arranged on all sides and integrated luminaires; 6 shows the structure of a truss according to the invention as a stationary column with correspondingly formed front triangular plates; FIG. 7 shows a truss used as a stationary column of Figure 6 with a tapered connection head according to Figure 2 and two trusses according to the invention placed thereon as transverse trusses with the possibility of attaching another axial truss, Figure 8 shows a construction similar to Figure 7, but in place of another Fig. 9 schematically illustrates the use of a plurality of trusses according to the invention for the construction of a fair stand; Fig. 10 schematically illustrates the use of trusses according to the invention for the construction of a ceiling vault; Fig. 11 shows an enlarged view of the truss; 2, FIG. 12 explosively shows the connection head of FIG. 11, and FIG. 13 is an enlarged cross-sectional view of the profile of the mounting head; 11 and 12.

DETAILED DESCRIPTION OF THE INVENTION

Figures 1 to 3 show a truss according to the invention, which is constructed of three hollow profiles 1, 2 and 3, which can be made, for example, as an extruded aluminum profile. The three hollow sections 1, 2 and 3 are arranged parallel to each other, as shown in the cross-section in Figure 3, and connected to a single beam with a cross-section of an isosceles triangle by means of a lattice grid structure 4 positioned therebetween. The grid structure 4 is welded. In the embodiment, it consists essentially of a triangular structure disposed transversely on the longitudinal axis of the hollow profiles 1 to 3.

In Figure 3, it can be seen that the two hollow sections 2 and 3 are formed identically, but mirror-symmetrical to a plane 5 that extends through the center between the two equally long arms 6 of the triangular cross-section and the junction point of the two arms 6. hollow profile 1, which is formed but different from hollow profiles 2 and 3, the axes of which always lie at the contact point of the arm 6 and the base line 7 of the triangle.

The hollow profile 1 has an outer wall with a circular cross-section and concentrically to this outer wall a circular core of the tube 8 from which four dividing walls forming hollow chambers 9, 10, 11 and 12 are led out and from these are further parallel dividing walls extending parallel to the arms. The two compartments 13 and 14 are all arranged symmetrically to the central plane 5. The compartments 13 and 14 have an open slot 15 open to the profile 3 and 2, respectively, and the slot 15 of the chamber 13 in the illustrated embodiment is closed by means of The edge of the decorative plate 17 is inserted into the notch 15 of the chamber 14. The chamber 12 has an outwardly open slot 18 whose longitudinal axis coincides with the central plane 5.

The hollow sections 2 and 3 likewise have a circular core of tube 8, from which five dividing walls extend to the outer circular wall of the tube, which form the five hollow chambers 19, 20, 21, 22 and 23. Of these chambers, the chambers 20, 21 and 23 again The openings 15 are open, the profile rail 16 or the edge of the decorative plate 17 in the groove of the chamber 23 being always analogous to the chamber 13 and 14, respectively. The grooves of the chambers 21 are likewise arranged to face one another. These can either be closed by means of profile strips 16 as shown on the left side of Figure 3, or a decorative plate can be inserted into this notch as shown on the right side of Figure 3. The other slits 15 of the chambers 20 are open to the outside. Their longitudinal axis is always symmetrical to the central plane 5 in a plane parallel to the plane 5.

Figure 1 shows that the front ends of the three hollow sections 1 to 3 may be covered by triangular plates 24, which can be fixed, for example, by using bolts (not shown) to the circular core of tube 1 of profile 1 to 3. Referring in particular to FIG. 5, by arranging the decorative panels 17 on triangular sides, they form a closed structured element on all sides, which can serve in particular as an interesting sight for the eyes of the exhibition and exhibition buildings.

FIG. 2 shows that the coupling plate 25 is screwed onto the triangular plates 24 in the form of two bolts 27 guided in the corresponding rib braces 26. The free ends of the bolts 27 are provided with hinged heads 31 of larger diameter which can be hung from above into the clamping grooves 28 of the cylindrical connection head 29 in that the octagonal cross-section of the connection head 29 is interrupted by two orbiting ring grooves 30 into which the hinge heads 31 are radially inserted and then axially fitted behind the grooves 28. By two wing screws 32 which can be manually tightened , the coupling 25 is fixed to the triangular plate 24 and to the suspended truss.

Figures 4 and 5 show first two trusses according to the invention in the embodiment according to figure 1 with front mounted triangular plates 24, whereby in the example of figure 4 it is suspended by means of not shown clamping locks in one of the chambers 13 or 14 (figure 3) 33, which can again be used, as schematically shown, for a displaceable arrangement of a reflector 34. FIG. 5 shows, on the other hand, the possibility of fastening a truss girally closed by a triangular plate 24 with a hollow profile 1 in a not shown manner; so that it can be used as a kind of structured element, and as shown in figure 5, it can also be equipped with integrated luminaires 35 in the decorative panel facing downwards.

Figures 6 to 8 relate first to the fastening method of Figure 2. Figure 7 shows a connection head 29 by means of which, as explained in Figure 2, two trusses according to the invention are connected transversely by means of a connector 25 and triangular plates 24. Here, the connection head 29 is slid by means of the lower plug-in pin 36 shown in FIG. 2 into the hole 37 of the triangular plate 24 shown in FIG. 6, which serves here as the upper front end of the truss according to the invention. The three trusses of the invention form a spatial corner in the manner shown in Figure 7 (or 8). Of course, it would be possible to attach additional crossbeams to the connection head 29.

However, Figure 2 also shows that the coupling head 29 has, on its side facing away from the plug-in pin 36, a circular flange 39 having a central opening 38 into which the plug-in pin 40, which is positioned protruding from the triangular face of FIG. In this way, it is possible, as shown in FIG. 7, to extend the truss as a stationary column axially upwards.

However, as shown in Figure 8, it is possible to associate the previously mentioned plug-in pin 40 with the connection head 29 and to use it to fit the known profile column 41 with an octagonal cross-section and groove type 28 of the connection head 29. In this case exhibition buildings, as sold by the applicant, with trusses according to the present invention.

Of course, it is also possible, as already mentioned with reference to FIG. 3, to utilize notch 18 of chamber 1 of profile 1 and notch 15 of both chambers 20 of profiles 2 and 3 to combine commercially available building elements using clamping locks with lattice girders.

Figures 9 and 10 show two examples of the use of new trusses in conjunction with other parts of fair building systems already on the market. In the exhibition stand according to FIG. 9, several trusses according to the invention are used, which have the reference numeral 42. Three of these trusses 42 are located on stationary columns 44 of the conventional type, which have a connection head 29 above. On this connection head the couplings 25 are hung and by means of them and the triangular plates 24 the trusses 42. These trusses and columns 44 are supplemented with commercially available stationary columns 41 and corresponding wall plates 45.

Figure 10 shows that, for example, with three trusses 42, it is possible to assemble an arched ceiling structure by placing corresponding and commercially available arched parts 43 in the open cuts of the chambers 20 (Figure 3) of the hollow sections 3 and 2 respectively. increasing the possibilities of using existing construction parts for trade fair and exhibition buildings. They thus complement such trade fair building systems, but can also be used without such parts, for example in the manner illustrated in Figure 7, as light and fast but stable modular fair building components.

Fig. 11 first shows a connection head 29 which, as will be explained further from Figs. 12 and 13, consists of a tubular hollow profile having axial slits 50 (or grooves 28 according to Fig. 2) on the outer periphery which open into equally axial chambers. 51. These hollow chambers 51 are formed such that hinge heads 31 of bolt pins 27 can be inserted therein. It would of course also be possible to insert instead of triangular plates 24 with couplings 25 of other hinge heads 31 of other beams, for example beams in which bolts 27 are aligned with two profile tubes parallel to one another, which are connected to each other by means of a planar beam. In this way, it would then be possible to connect flat trusses.

Figure 11, in particular Figure 12 clearly shows that the column pieces of the connecting head tubes 29 are interrupted by two spaced apart circular grooves 30, the axial dimension of which is large enough to accommodate the hinge heads 31 in a radial direction on the axis of the connecting head 29 and then to axially move the chambers 51 downwards. Figures 11 and 12 also show, however, that the connection head tube is closed up and down by one circular flange 39, which is fixed by means of screws 53 immediately at the front end of the tube. The screws 53 pass through the holes 54 of the circular flange 39 and can be inserted into the inner grooves 55 of the tube and screwed there. In the same way, it is possible to mount a lower annular flange 39 on which the hollow cylindrical connection piece 36 with the front end surface 56 can be screwed in the same way, and here the screws 53 can be inserted into the corresponding holes 54 '.

As shown in particular in Figure 13, the other grooves 57 are parallel to the hinge grooves 50 and radially from the inside of the chambers 51, which can be used to introduce commercially available clamping locks of known building systems by means of which conventional crossbeams can be placed. The connection head 29 is then universally applicable.

11 and 12, it can finally be recognized that the guide grooves 30 can be inserted into the suspension grooves 50 and the chambers 51 by means of a groove 30 which abut the lower circular flange 39 and thus serve to adjust the height of the hinged hinge heads 31. Thus, the height adjustment of, for example, the trusses according to FIG. 2 on the connection head 29 can be easily changed.

Claims (7)

PATENT CLAIMS A connection head for a truss for the production of mobile buildings, in particular trade fair and exhibition stands, consisting of a pipe (29) with axial suspension grooves (50) distributed circumferentially for receiving the clamping members of the trusses (42), characterized in that the suspension grooves are interrupted by annular grooves (30) which serve to radially insert the suspension heads (31) which are connected to the crossbeams (42). Connection head according to claim 1, characterized in that the pipe (29) is closed at the ends by circular flanges (39). Connection head according to claim 2, characterized in that the tube (29) has internal lengths (55) serving as fastening holes for screws (53) for fastening the circular flange (39). Connection head according to claim 1, characterized in that a hollow cylindrical connection piece (36) is provided on the front connection surface (56) on which the annular flange (39) is fitted. Connection head according to claim 1, characterized in that parallel to the hinge grooves (50) and radially from the inside there are further grooves (57) for the introduction of conventional clamping locks. Connection head according to claim 1, characterized in that guide inserts (58) are inserted in the suspension grooves (50) to adjust the height of the suspension heads (31). 7 drawings