EP0690187A1 - Scaffolding console - Google Patents

Abstract

The system consists of bars (11A, 11B) which are joined together by half-shells fitted face to face to form junctions (12) with stepped channels for the bar ends. At least one of the channels passes through the two half-shells from one end to the other to allow a bar to pass through it. The half-shells are shaped to form three channels for the bars, two at right angles to one another and the third at an oblique angle to the first two. They are joined together by nuts and bolts or by rivets. The bars are made from a metal or light alloy, e.g. of aluminium and they all have the same rectangular cross-section with a slit along one edge. <IMAGE>

Description

The present invention relates generally to scaffolding consoles, of the type used for example for the execution of work on the roof of any construction.

These scaffolding consoles are generally made up of a network of members connected to each other at their nodes.

The present invention generally relates to a provision advantageously allowing a relatively simple, economical and light realization of these scaffolding consoles and also leading to other advantages.

More specifically, it relates to a scaffolding console of the kind comprising a network of members connected to each other at their nodes and characterized in that these members are sections of profile, in that their connection to their nodes is ensured by nuts each formed of two shells, which, duly facing one another, and duly secured to each other, enclose the members between them, forming for each a channel suitable for their engagement, and that the cross section of at least one of the corresponding channels is stepped, with, set back over a portion of the largest passage, a portion of the least passage.

Thus formed of profile sections, the members are advantageously simple and economical to produce.

In addition, the corresponding profile sections are advantageously made of metal or light alloy, and for example aluminum, which, with equal mechanical strength, advantageously makes it possible to reduce the weight thereof in significant proportions, of the order of half. , compared to comparable steel constructions.

Finally, the connection between them of the members being made very simply by pinching between the two shells of a nut, without there being in any place any need for welding, the production of the assembly is advantageously relatively economical.

Preferably, the profile sections constituting the members have a generally quadrangular cross section, for example rectangular, the same for all, with a slot running longitudinally over their entire length in the middle of one of their faces.

Thus, if at least one accessory, such as suspension bracket, tie rod or fan railing is provided, this accessory comprises, according to the invention, a section of section, said here for simple convenience section of auxiliary section , by which it is able to be engaged in a telescopic manner in a section of profile constituting one of the members, said here by simple convenience main section section, this auxiliary section section having a generally quadrangular cross section complementary to that of the section main profile, with a T-rib running longitudinally over its entire length in the middle of one of its faces.

This T-rib advantageously reinforces the section of auxiliary section, which advantageously makes it possible to be satisfied effectively with such a section of auxiliary section for the constitution of the accessory concerned.

• la figure 1 est une vue en élévation d'une console d'échafaudage suivant l'invention ;
• la figure 2 est, à échelle supérieure, et avec un arrachement local, une vue en perspective éclatée de cette console d'échafaudage à l'un de ses noeuds ;
• la figure 3 est, à échelle différente, et suivant la ligne III-III des figures 1 et 2, une vue en coupe transversale d'un des tronçons de profilé constitutifs de ses membrures ;
• la figure 4 est, à l'échelle de la figure 3, et suivant la flèche IV de la figure 2, une vue en élévation d'une des coquilles constitutives d'une des noix de la console d'échafaudage suivant l'invention ;
• la figure 5 est une vue en plan de cette coquille, suivant la flèche V de la figure 4 ;
• la figure 6 en est une vue de côté, suivant la flèche VI de la figure 4 ;
• la figure 7 est une vue en perspective de cette coquille, vue de l'intérieur, et tournée vers le bas ;
• la figure 8 est une vue en élévation qui, analogue à celle de la figure 1, illustre la mise en oeuvre de divers accessoires ;
• la figure 9 est, suivant la ligne IX-IX de la figure 8, une vue en coupe transversale qui, analogue à celle de la figure 3, et à l'échelle de celle-ci, illustre l'engagement télescopique d'un tronçon de profilé auxiliaire appartenant à un tel accessoire dans un des tronçons de profilé principaux constitutifs des membrures de la console d'échafaudage suivant l'invention.

The characteristics and advantages of the invention will become apparent from the description which follows, by way of example, with reference to the appended schematic drawings in which:

• Figure 1 is an elevational view of a scaffolding console according to the invention;
• Figure 2 is, on a larger scale, and with a cutaway, an exploded perspective view of this scaffolding console at one of its nodes;
• Figure 3 is, on a different scale, and along the line III-III of Figures 1 and 2, a cross-sectional view of one of the sections of profile constituting its members;
• Figure 4 is, on the scale of Figure 3, and according to arrow IV of Figure 2, an elevational view of one of the shells constituting one of the nuts of the scaffolding console according to the invention;
• Figure 5 is a plan view of this shell, along arrow V of Figure 4;
• Figure 6 is a side view, along arrow VI of Figure 4;
• Figure 7 is a perspective view of this shell, seen from the inside, and facing down;
• Figure 8 is an elevational view which, similar to that of Figure 1, illustrates the implementation of various accessories;
• Figure 9 is, along the line IX-IX of Figure 8, a cross-sectional view which, similar to that of Figure 3, and on the scale thereof, illustrates the telescopic engagement of a section auxiliary profile belonging to such an accessory in one of the main profile sections constituting the frames of the scaffolding console according to the invention.

As illustrated in these figures, a scaffolding console 10 according to the invention comprises, overall, in a manner known per se, a network of members 11A, 11B, 11C, 11D suitably connected to each other at their nodes N.

According to the invention, the members 11A, 11B, 11C, 11D are all sections of profile, which, in practice all have the same cross section, specified later, and their connection to the nodes N is ensured by nuts 12 each formed from two shells 13, which, duly facing one another, and duly secured to each other, according to arrangements also described in more detail later, enclose between them the members 11A, 11B, 11C, 11D, by forming for each a channel, 15 or 16, specific to their engagement.

As can be seen in isolation for one of them, in this case the member 11A, in FIG. 3, the profile sections constituting the members 11A, 11B, 11C, 11D have a generally quadrangular section, and in rectangular practice, with a slot 18 running longitudinally over their entire length, in the middle of one of their faces, in practice one of their smaller sides.

In the embodiment shown, these profile sections are reinforced, in at least one of the angles of their cross section, and, in practice, in each of these, by a local excess thickness forming longitudinally a projecting bead 19 on at least one of their faces concerned by such an angle.

In practice, only the faces of greater width of the profile sections constituting the members 11A, 11B, 11C, 11D thus externally comprise a bead 19 projecting along each of their edges.

In practice, these are flat 19 cords, that is to say cords whose surface facet extends parallel to the face of the profile sections on which they project, and, from a cord 19 to the other on the same face of these profile sections, the surface facets of these beads 19 are coplanar.

In the embodiment shown, the scaffolding console 10 according to the invention is formed by four members 11A, 11B, 11C, 11D, namely, on the one hand, a member 11A forming an upright, a member 11B forming a cross member, and a member 11C forming a strut, which are arranged in a right triangle, the member 11B forming a cross member being orthogonal to the member 11A forming a post while the member 11C forming a strut is oblique with respect to one and on the other of the preceding members 11A, 11B, and, on the other hand, a member 11D forming a sleeve, which, parallel to the member 11B forming a cross member, extends at the junction of the member 11A forming an upright and the member 11C forming a strut.

In practice, the member 11A forming an upright is intended to extend vertically, and the member 11B forming a cross member is intended to extend horizontally and to receive a floor 20, as shown diagrammatically in broken lines in FIG. 8.

As for the frame 11D forming a sleeve, it is simply intended to allow the installation, if desired, of any accessory, and, for example, of a spacer T 21A, as shown in FIG. 8.

The length of this member 11D is in practice very reduced compared to that of the other members 11A, 11B, 11C.

For the connection of the four members 11A, 11B, 11C, 11D, the scaffolding console 10 according to the invention comprises three nuts 12.

These nuts 12 are identical to each other, and the two shells 13 which constitute each of them are themselves identical to each other, being faced with each other in a plane P forming a plane of symmetry for the whole, Figures 5 and 6.

At least one of the channels 15, 16 formed by a nut 12, and, in practice, each of these, continuously crosses this nut 12, opening out to the outside to one and the other of its extremities.

At least one of the nuts 12, and, in this case, each of these since they are identical, forms three channels 15, 16, namely, on the one hand, two channels 15, which are orthogonal between them, and, on the other hand, a channel 16 oblique on the previous ones.

In practice, the channel 16 is inclined at 45 ° on one and the other of the channels 15.

In practice, also, it extends between the channels 15, along the bisector of the right angle formed between them.

According to the invention, and for reasons which will appear later, the cross section of at least one of the channels 15, 16, and, in practice, that of each of these, is stepped, with, set back, transversely , on a portion of largest passage S corresponding to the overall cross section of the members 11A, 11B, 11C, 11D, a portion of least passage S '.

This is the case both for the channels 15 orthogonal to one another and for the channel 16.

Like the portion with the largest passage S, the portion with the least passage S 'has, transversely, a generally quadrangular contour.

To consolidate, longitudinally, the retention of the members 11A, 11B, 11C, 11D in the nuts 12, at least one of these nuts 12, and, in this case, each of these since they are identical, comprises , for at least one of the channels 15, 16, and, in practice, for each of these, on the internal surface of at least one of the shells 13, and, in this case, on the internal surface of each of these since they are identical, nesting means 22, which, acting transversely in such a channel 15, 16, are intended to cooperate with complementary nesting means, specified later, provided for this purpose on members 11A, 11B, 11C, 11D.

In practice, in the embodiment shown, these interlocking means 22 are male interlocking means.

For each shell 13, and for each channel 15, 16, it is a simple lug, which, projecting from the internal surface of such a shell 13, intervenes substantially at mid-length in the channel 15, 16 that it affects.

In the embodiment shown, this lug has a circular outline in cross section.

For the passage of tightening members 24, such as for example the bolts, with screws 25 and nut 27, shown in FIG. 2, the two shells 13 constituting a nut 12 have, facing one of the other, and away from the channels 15, 16 which they delimit, passages 28.

In the embodiment shown, four passages 28 are thus provided.

Two of these passages 28 surround one of the channels 15, each affecting respectively two legs 29 which, projecting from each of the shells 13, extend flush with the confrontation plane P thereof, parallel to this confrontation plan P.

That of these tabs 29 which is on the side opposite to the channel 16 extends substantially mid-length of the channel 15, to the right of the lug forming the fitting means 22 present therein.

The one which is on the side of the channel 16 extends on the contrary flush with the outlet of the channel 15.

The two other passages 28 are each respectively disposed on either side of the other channel 15, substantially in line with the lug forming the fitting means 22 present therein.

That which is arranged on the side of channel 16 extends over the entire width of the portion of least passage S 'of this channel 15.

That which is arranged on the side opposite to channel 16 extends over the entire width of the portion with the largest passage S of this channel 15.

It is also located at the foot of a tab 30, which projects transversely outwards, perpendicular to the channel 15, and which is itself pierced with a passage 31 at its end, for the establishment of a shell 13 to the other, and as shown schematically in broken lines in Figure 6, a spacer 32 defining with these shells 13 a passage 33 clean, if desired, for the establishment of a sling.

In the embodiment shown, this tab 30 is bordered, laterally, by stiffening ribs 34, which extend transversely on the shell 13, to the opposite edge of the channel 15 concerned.

The two shells 13 constituting a nut 12 also have, in correspondence with one another, in the embodiment shown, for the possible passage of pins, in line with each of the channels 15, two holes 36, which, in practice, are aligned along the median plane of the portion of greatest passage S of these channels 15.

Each of these two shells 13 is further perforated, for its lightening, by a certain number of recesses 37.

In the embodiment shown, three recesses 37 are thus provided, in a triangle, in the area median of the shells 13.

In the embodiment shown, the outer contour of the shells 13 follows that of their channels 15.

But, in practice, in the convergence zone of these channels 15, the shells 13 are truncated by a cutaway 38, which extends substantially at 45 ° relative to these channels 15, and which is therefore substantially perpendicular to the channel 16 .

In practice, a stiffening rib 40 extends laterally projecting along this cutaway 38, around the common outlet of the channels 15.

On the side of the opposite outlet of the channel 16, the shells 13 are also truncated by a cutaway 41, which, perpendicular to this channel 16, is parallel to the previous cutaway 38, and which therefore also extends substantially at 45 ° by compared to channels 15.

The shells 13 thus constituting the nuts 12 are preferably made of metal or light alloy, such as aluminum for example.

The same is true of the profile sections constituting the members 11A, 11B, 11C, 11D.

For the constitution of nesting means 42 complementary to the nesting means 22 of the shells 13, the cord 19 which have projecting on at least one of their faces the profile sections constituting the members 11A, 11B, 11C, 11D locally comprises, recessed, in the embodiment shown, at least one transverse groove, which, in practice, extends over the entire width of such a cord 19, FIG. 2.

In practice, too, this transverse groove is produced during assembly, for example by milling, and, preferably, this assembly is carried out in the workshop.

During this assembly, the shells 13 constituting the nuts 12 present at the three nodes N are attached laterally from the outside on the members 11A, 11B, 11C, 11D, with engagement of the lug constituting their means of fitting 22 in the transverse grooves forming the fitting means 42 provided for this purpose on these members 11A, 11B, 11C, 11D.

The clamping members 24 are then put in place.

Instead of bolts, as indicated above, it may alternatively just as well be rivets for example.

In the scaffolding console 10 thus obtained, the legs 30 of the shells 13 of the nuts 12 framing the frame 11B forming a crosspiece extend upwards.

In addition to their attachment function for possible slings, they thus advantageously ensure the lateral retention of the decking forming the floor 20 placed on such a frame 11B.

Conversely, the legs 30 of the shells 13 of the nut 12 present at the junction of the members 11A, 11C, 11D extend downward.

Of course, in FIG. 2, holes 44 are provided transversely at each of the ends of the frame 11A forming an upright and of the frame 11B forming a cross member, in correspondence with the holes 36 of the shells 13 forming the nuts 12.

Similarly, holes of the same type are provided transversely in the frame 11D.

The accessory that constitutes the spacer T 21A engaged in this frame 11D can thus be locked in position therein by pins not shown, this accessory being itself duly provided transversely with holes 45 from place to place at this effect.

Similarly, the free channel 15 of the nut 12 present at the junction of the member 11B forming a cross member and the member 11C forming a strut can be used for the implantation of another accessory, in this case a vertical railing 21B, provided for this purpose, at its base, with holes of the same type as the previous holes 45.

Other accessories can be envisaged, such as for example, as shown in solid lines in FIG. 8, a suspension stock 21C, or, as shown diagrammatically in this FIG. 8, a tie rod 21D, in substitution for the stock suspension 21C, or a railing in fan 21E, replacing the vertical railing 21B.

According to the invention, each of the accessories that constitute this suspension bracket 21C, this tie rod 21D, or this fan-shaped railing 21E, comprises, for its implementation, a section of profile 46, said below for simple convenience, an auxiliary section section, by which it is able to be engaged telescopically in a section section constituting one of the members 11A, 11B, 11C concerned, hereinafter said for simple convenience, main section section, auxiliary section section 46 having a generally quadrangular cross section complementary to that of the main section section, with a T-shaped rib 48 which, running longitudinally over its entire length in the middle of one of its faces, protrudes from this frame 11A , 11B, 11C in favor of the corresponding slot 18, as can be seen in FIG. 9 for the member 11A.

It is for the possible intervention of such an auxiliary section section 46, and, therefore, of the accessory which comprises it, that the channels 15 of the nuts 12 comprise a portion of least passage S ', the latter corresponding to the overall cross section of the T-rib 48 of this auxiliary profile section 46.

In practice, the suspension stock 21C is formed of three auxiliary profile sections 46, connected two by two at right angles by two nuts 50.

These nuts 50 have a constitution generally similar to that of the preceding nuts 12.

However, they have, by virtue of their re-entrant angle, a veil 51 which, for their possible engagement on a tube, comprises a notch 52 whose bottom is in a semicircle.

For the coupling of the suspension stock 21C to the scaffolding console 10 the auxiliary section section 46 which serves as its upright comprises transversely from place to place holes 45, for the passage of pins.

The tie-rod 21D is simply formed, for its part, of an auxiliary section section 46 and of a hook 53.

As before, its auxiliary profile section 46 has transverse holes 45 in place from place to place.

The fan-shaped railing 21E is reduced to an auxiliary profile section 46.

As before, it has holes 45 in place from place to place.

Of course, the present invention is not limited to the embodiments described and shown, but encompasses any variant.

Claims (15)

Scaffolding console, of the type comprising a network of members connected to each other at their nodes, characterized in that the members (11A, 11B, 11C, 11D) are sections of profile, in that their connection to the nodes ( N) is ensured by nuts (12) each formed by two shells (13), which, duly facing one another, and duly secured to each other, enclose the frames (11A, 11B, 11C, 11D), forming for each a channel (15, 16) suitable for their engagement, and in that the cross section of at least one of the corresponding channels (15) is stepped, with, set back on a portion of the largest passage (S), a portion of the least passage (S '). Scaffolding console according to claim 1, characterized in that at least one of the channels (15, 16) formed by a nut (12) passes continuously through it, opening out to the outside and to the other of its extremities. Scaffolding console according to any one of claims 1, 2, characterized in that at least one of the nuts (12) forms three channels, namely two channels (15), which are orthogonal to each other, and a channel (16) which is oblique to the previous ones. Scaffolding console according to claim 3, characterized in that the channel (16) is inclined at 45 ° on the two channels (15). Scaffolding console according to any one of Claims 1 to 4, characterized in that, for at least one of the channels (15, 16) which it forms, at least one of the nuts (12) comprises, on the internal surface of at least one of its shells (13), interlocking means (22), which, acting transversely in such a channel (15, 16), are intended to cooperate with interlocking means (42) complementary provided for this purpose on the frame (11A, 11B, 11C, 11D) corresponding. Scaffolding console according to any one of Claims 1 to 5, characterized in that, for the passage of clamping members (24), such as for example bolts or rivets, the two shells (13) constituting a nut (12) have, facing one another, and away from the channels (15, 16) which they delimit, passages (28) . Scaffolding console according to any one of claims 1 to 6, characterized in that the two shells (13) constituting a nut (12) are identical to each other. Scaffolding console according to any one of claims 1 to 7, characterized in that the nuts (12) which it comprises are identical to each other. Scaffolding console according to any one of claims 1 to 7, characterized in that it is formed by four frames (11A, 11B, 11C, 11D), namely, on the one hand, a frame (11A) forming upright, a member (11B) forming a cross member, and a member (11C) forming a strut, which are arranged in a right triangle, the member (11B) forming a cross member being orthogonal to the member (11A) forming a post while the member ( 11C) forming a strut is oblique on both of the preceding members (11A, 11B), and, on the other hand, a member (11D) forming a sleeve which, parallel to the member (11B) forming a cross member , extends to the junction of the frame (11A) forming a post and the frame (11C) forming a strut, and in that, for the connection of these four frames (11A, 11B, 11C, 11D), it has three nuts (12). Scaffolding console according to any one of claims 1 to 9, characterized in that the profile sections constituting its members (11A, 11B, 11C, 11D) are made of metal or light alloy, such as aluminum for example. Scaffolding console according to any one of claims 1 to 10, characterized in that the profile sections constituting its members (11A, 11B, 11C, 11D) all have the same cross section. Scaffolding console according to claim 11, characterized in that the profile sections constituting its members (11A, 11B, 11C, 11D) have a generally quadrangular cross section, with a current slot (18) longitudinally over their entire length in the middle of one of their faces. Scaffolding console according to claim 12, characterized in that the profile sections constituting its members (11A, 11B, 11C, 11D) are reinforced in at least one of their angles of their cross section by a local allowance longitudinally a bead (19) projecting on at least one of their faces concerned by such an angle. Scaffolding console according to Claims 5 and 13, taken together, characterized in that, for the construction of nesting means (42), the cord (19) which the sections have projecting on at least one of their faces of constituent sections of the members (11A, 11B, 11C, 11D) locally has in hollow at least one transverse groove, and the interlocking means (22) provided in a complementary manner on the internal surface of at least one of the shells ( 13) nuts (12) have at least one lug projecting from this internal surface. Scaffolding console according to any one of claims 12 to 14, characterized in that at least one accessory such as suspension bracket (21C), tie rod (21D), or fan-shaped railing (21E), for example, being associated with it, said accessory comprises a section of section (46), said here for simple convenience, section of auxiliary section, by which it is able to be engaged telescopically in a section of section constituting one of the members (11A, 11B, 11C, 11D), said here by simple main profile convenience, said auxiliary profile section (46) having a generally quadrangular cross section complementary to that of the main profile section, with a current T-rib (48) longitudinally over its entire length in the middle of one of its faces.

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