EP2522792A1 - System for attaching a railing post on a roof covering - Google Patents

Abstract

The system (1) has a railing shoe (2) fixed on a platform (3) to support a railing post (M). An insulating layer (4) covers the platform and comprises a cutout for allowing the passage of the shoe, where a portion of the shoe projects from the insulating layer. A sealing unit (5) is sealingly mounted around the projecting portion of the shoe and fixed on the insulating layer by sealingly covering the cutout. The sealing unit comprises a sealing portion (50) made from aluminum.

Description

The present invention relates to a system for fixing a guardrail amount on a self-supporting tray type roof covering tank having crenellated ribs.

It relates more particularly to a fastening system comprising a guardrail shoe designed to support a railing amount and a platform on which is fixed said shoe.

In the field of building, it is known to use cover tanks of the type self-supporting tray, sometimes called steel bins, for roofing a roof. These cover bins have crenellated ribs, generally trapezoidal in shape, whose flanks converge upwards. For covering the roof, it is customary to arrange the cover bins next to each other, preferably with an overlap of one or more ribs between the adjacent bins, these bins being able to be placed on purlins, in parallel at the roof slope line.

The cover bins can be made of various metallic or non-metallic materials; the most frequently used material being steel. The tightness, the low weight, the ease of implementation and the price of these cover bins make it an ideal solution for large areas to cover quickly, typically factories, shops and farm buildings.

In known manner, guardrails are used to ensure the safety of people located on high structures, such as roofs including roofs made with self-supporting roofing tanks. The railings conventionally comprise several amounts spaced from each other, each amount being mounted on a railing shoe, and rails or bars that connect the amounts between them.

For the installation of a railing on self-supporting roofing tanks, it is customary to mount the hooves on platforms or decks which will then be fixed on the tops of the crenels of the roof boxes. In order to ensure the tightness of the assembly, it is generally intended to perform additional sealing between the platform and the cover tank.

However, this sealing technique on the cover tank proves insufficient, both for sealing at the level of fixing the platform on the cover tank and for sealing at the level of the fixing of the guard shoe. body on the platform.

The present invention aims to solve this problem by providing a system for fixing a guardrail amount on a cover tank which ensures a good seal, with sealing steps simple to implement.

• une couche d'isolation recouvrant au moins partiellement la plateforme et présentant une découpe pour le passage du sabot, ledit sabot présentant une partie dépassant de ladite couche d'isolation ; et
• un moyen d'étanchéité monté de manière étanche autour de la partie du sabot dépassant de ladite couche d'isolation, et fixé sur ladite couche d'isolation en recouvrant de manière étanche ladite découpe.

For this purpose, it proposes a system for fixing a guardrail amount on a self-supporting tray type roof covering tank having crenellated ribs, said fastening system comprising a railing shoe designed to support said amount and a platform on which is fixed said shoe, remarkable in that it further comprises:

• an insulation layer at least partially covering the platform and having a cutout for the passage of the shoe, said shoe having a portion protruding from said insulation layer; and
• sealing means sealingly mounted around the shoe portion protruding from said insulating layer, and attached to said insulating layer by sealingly covering said blank.

Thus, the system according to the invention makes it possible to fix a railing on a cover tank from the outside, on the tops of the cracks of the cover tank (sometimes called the vertices of the waves), and the system is then sealed from the outside with, on the one hand, the insulation layer which covers the platform and, on the other hand, the sealing means which seals around the periphery of the cut of the insulation layer .

According to one characteristic, the sealing means comprises a sealing member having, on the one hand, a hollow base mounted around the shoe and fixed on the insulation layer and, on the other hand, a hollow sleeve extending the base and enclosing the hoof portion protruding from said insulation layer.

This sealing member may be made in one piece, for example aluminum, and it seals around the perimeter of the cutting of the insulation layer.

According to another characteristic, the base of the sealing member is fixed to the insulation layer by gluing.

For example, the base may have a contact face pre-impregnated with an adhesive or adhesive substance, to allow the bonding of the base on the periphery of the insulation layer. This adhesive or sticking substance may be a bituminous substance.

In a particular embodiment, the sealing means further comprises a sealing flange mounted on the upper end of the hollow sleeve opposite the base, said sealing flange having an inner lip clamped around the periphery of the shoe.

This sealing collar advantageously makes it possible to perfect the seal around the periphery of the shoe, by capping the hollow sleeve of the sealing member and by having a tight internal lip on the periphery of the shoe.

Advantageously, the shoe comprises a support member fixed on the platform, in particular by screwing, and a mast mounted on the support member and designed to support the amount of railing, said mast protruding from said insulation layer.

The interest of this architecture and break down the shoe into a support member fixed on the platform, and a mast that has a height sufficient to exceed the insulation layer and allow the receipt of the amount. Depending on the thickness of the insulation layer, it will be possible to choose such or such height of mast, without change for the support member.

In a particular embodiment, the platform has two substantially coplanar longitudinal strips, said fastening strips, said fastening strips extending along a longitudinal axis and being shaped to bear on the crest peaks of the cover box, each strip fixing device having at least one series of several orifices for the passage of fasteners of the platform on said peaks of the crenellations of the cover tank, each series of orifices being distributed in a direction transverse to the longitudinal axis, preferably perpendicular to the longitudinal axis.

Thanks to these transversal series of orifices, it is possible with the same platform to be fixed on cover tanks of different waves (the wave of a cover tank representing the pitch between two adjacent slots) and / or different slot widths. Thus, the platform can be adapted to the many types of cover tray wave encountered in the trade.

According to a possibility of the invention, each fastening strip has several series of orifices for the passage of fasteners of the platform on the tops of the crenellations of the roof covering tray, each series of orifices being distributed according to a direction transverse to the axis longitudinal and sets of the same fastening strip being spaced apart from each other along the longitudinal axis.

According to another possibility of the invention, the platform has a crenellated shape with the two fastening strips which surround a central longitudinal strip raised with respect to the two said fastening strips.

This crenellated form is advantageous for the step of fixing the shoe on the cover tray, especially in terms of space.

In particular, the shoe is fixed between the two fastening strips. It can thus be fixed on the central band described above.

The present invention also relates to the characteristic that the shoe is attached to a longitudinal end of the platform.

The invention also relates to an assembly of a fastening system according to the invention on a self-supporting tray type roof covering tank having longitudinal crenellated ribs, where the platform is supported and fixed on the crest peaks of the cover tray.

• la figure 1 est une vue schématique en perspective du système conforme à l'invention, à une première étape du montage d'un sabot de garde-corps sur une plateforme ;
• la figure 2 est une vue schématique éclatée du système de la figure 1, à la première étape de montage ;
• la figure 3 est une vue schématique en coupe transversale du système de la figure 1 fixé sur un premier bac de couverture présentant une première onde, après une deuxième étape de fixation du sabot sur le bac de couverture ;
• la figure 4 est une vue schématique en coupe transversale du système de la figure 1 fixé sur un second bac de couverture présentant une seconde onde, après une deuxième étape de fixation du sabot sur le bac de couverture ;
• la figure 5 est une vue schématique de dessus du système de la figure 1 ;
• la figure 6 est une vue schématique en perspective du système conforme à l'invention, à une troisième étape du montage d'une couche d'isolation sur la plateforme ;
• la figure 7 est une vue schématique en perspective du système de la figure 6, après la troisième étape de montage ;
• la figure 8 est une vue schématique en perspective du système conforme à l'invention, à une quatrième étape de montage d'un moyen d'étanchéité sur le pourtour du sabot ;
• la figure 9 est une vue schématique en perspective du système de la figure 8, après la quatrième étape de montage et après montage du montant de garde-corps sur le sabot de garde-corps ;
• la figure 10 est une vue schématique en coupe transversale du système de la figure 9 fixé sur le premier bac de couverture.

Other features and advantages of the present invention will appear on reading the detailed description below, of an example of non-limiting implementation, with reference to the appended figures in which:

• the figure 1 is a schematic perspective view of the system according to the invention, a first step of mounting a guard rail on a platform;
• the figure 2 is an exploded schematic view of the system of the figure 1 at the first stage of assembly;
• the figure 3 is a schematic cross-sectional view of the system of the figure 1 fixed on a first cover tray having a first wave, after a second step of fixing the shoe on the cover tray;
• the figure 4 is a schematic cross-sectional view of the system of the figure 1 fixed on a second cover tray having a second wave, after a second step of fixing the shoe on the cover tray;
• the figure 5 is a schematic top view of the system from the figure 1 ;
• the figure 6 is a schematic perspective view of the system according to the invention, a third step of mounting an insulation layer on the platform;
• the figure 7 is a schematic perspective view of the system from the figure 6 after the third stage of assembly;
• the figure 8 is a schematic perspective view of the system according to the invention, a fourth step of mounting a sealing means on the periphery of the shoe;
• the figure 9 is a schematic perspective view of the system from the figure 8 after the fourth stage of assembly and after mounting the railing post on the railing shoe;
• the figure 10 is a schematic cross-sectional view of the system of the figure 9 fixed on the first cover tray.

The following description relates to a system 1 for fixing an amount M of guardrail on a cover tank B roof type self-supporting tray having ribs shaped crenellations.

As illustrated on Figures 1 to 4 , the system 1 comprises a body guard shoe 2 designed to support the amount M and a platform 3 on which is fixed this shoe 2.

The shoe 2 comprises a support member 20 and a mast 21 mounted on the support member 20 and designed to support the amount M. The support member 20 and the mast 21 are both made of metal. The mast 21 is broken down into a spacer 22 whose lower end is fixed on the support member 20, and a clamping piece 23 fixed on the upper end of the spacer 22.

The support member 20 comprises a hollow body inside which extends vertically and centrally an inner tubular wall; this inner tubular wall being secured to the hollow body by internal radial ribs evenly distributed around the periphery of the inner tubular wall.

The support member 20 further comprises two orifices disposed on either side of the hollow body in order to allow the passage of fastening screws 24 intended to cooperate with nuts 25 to fix the support member 20 on the platform 3. The support member 20 can thus be fixed by screwing onto the platform 3, as shown in the drawings. Figures 1 and 2 by means of the two sets screws 24 and nuts 25, the screws 24 passing through holes 30 formed in the platform 3 and the orifices formed in the support member 20 on either side of the hollow body.

The spacer 22 is in the form of a cylindrical hollow body within which extends vertically and centrally an inner tubular wall; this inner tubular wall being secured to the hollow body by internal radial ribs evenly distributed around the periphery of the inner tubular wall.

The lower end of the spacer 22 is provided to engage the hollow body of the support member 20, so that the inner tubular walls of the support member 20 and the spacer 22 are aligned. It is then sufficient to screw a self-tapping screw 26 in these two inner tubular walls to reattach the spacer 22 to the support member 20 removably.

The clamping piece 23 is in the form of a metal alloy body having a circular base surmounted by a hollow portion of substantially rectangular section. The body of the clamping piece 23 ends, on the one hand, by an upper end open at the hollow part and, on the other hand, by a lower end closed by a bottom wall (not visible) at the level of the hollow part. of the circular base.

As illustrated on Figures 9 and 10 , a lower end of the railing post M can thus be slid into the hollow part of the clamping piece 23 by the open upper end, and then fixed rigidly in this position by means of screws (not shown) screwed into transverse bores formed in the lateral surface of said hollow portion.

The circular base of the clamping piece 23 can then be fixed by screwing on the upper end of the spacer 22 itself screwed to its lower end opposite the support member 20 screwed onto the platform 3. The circular base of the clamping piece 23 thus has a central orifice formed in its bottom wall, to allow the passage of a self-tapping screw 27 for fixing the clamping piece 23 on the spacer 22.

The circular base of the clamping piece 23 is designed to be positioned on the upper end of the spacer 22, so that the inner tubular wall of the spacer 22 and the central hole of the bottom wall of the clamp 23 are aligned. Then just screw the self-tapping screw 27 to reattach the clamping piece 23 to the spacer 22 removably.

The platform 3 is in the form of a profile obtained by stamping or folding a metal strip, this elongate platform 3 extending along a longitudinal main axis X.

• sur ses bords, deux bandes longitudinales coplanaires, dites bandes de fixation 31 ; et
• dans sa partie centrale ou médiane, une bande centrale 32 longitudinale surélevée par rapport aux deux bandes de fixation 31 et encadrée par ces deux bandes de fixation 31 ; et
• deux flancs 33 reliant les bandes de fixation à la bande centrale 32, ces flancs convergeant vers le haut en direction de la bande centrale 32.

The platform 3 has a crenellated shape with symmetry along a longitudinal plane, and comprises:

• on its edges, two longitudinal strips coplanar, said fastening strips 31; and
• in its central or central part, a longitudinal central strip 32 raised with respect to the two fastening strips 31 and flanked by these two fastening strips 31; and
• two flanks 33 connecting the fastening strips to the central strip 32, these flanks converging upwards in the direction of the central strip 32.

This crenellated form is convenient to facilitate the attachment of the support member 20 by means of the screw assemblies 24 and nuts 25, and prevent the heads of the screws 24 do not interfere with mounting on the cover tray B.

As illustrated on Figures 3, 4 and 10 , the fastening strips 31 are intended to bear on the peaks S of crenellations of the cover tray B.

As illustrated on Figures 1 to 10 each fastening band 31 has several series of perforations, each series having several orifices 34 for the passage of fasteners 35 of the platform 3 on the peaks S of the slots of the cover tray B; these fixing members 35 may be rivet type, self-tapping screw, or the like.

Each series of orifices 34 is distributed in a direction transverse to the longitudinal axis X, in this case in a direction perpendicular to this longitudinal axis X. In other words, in the same series, the orifices 34 are aligned in a rectilinear manner according to a direction perpendicular to the longitudinal axis X.

In addition, the series of a same fastening strip 31 are spaced apart from each other along the longitudinal axis X; so that these series of orifices 34 define several rows of perforations parallel to each other. In the example shown on the Figures 1 to 10 each fastening strip 31 has eleven series of orifices 34.

More specifically, the series of orifices 34 are distributed symmetrically between the two fastening strips 31, and each series of orifices 34 has the same number of orifices, for example eight orifices 34 per series in the example illustrated on Figures 1 to 10 .

The platform 3 can be fixed on cover tanks B with the longitudinal axis X of the platform 3 parallel to the crenellations, in other words with the platform 3 extending parallel to the crenellations of the cover tank B. In this case, and as illustrated on the Figures 3 and 4 , the platform 3 is fixed on two peaks S slot of the cover tray B, with the fastening strips 31 which rest on these two respective S vertices. Thanks to the presence of several orifices 34 per series, it is possible to fix the platform 3 on cover tanks B having different waves (or inter-vertex distances) and / or different vertex widths S. It suffices for this to place the fasteners 35 in the orifices opening on the apices S.

The platform 3 can also be fixed on cover tanks B with the longitudinal axis X of the platform 3 perpendicular to the crenellations, in other words with the platform 3 extending across the crenellations of the cover tray B. In this case, the platform 3 is fixed on several successive crestal nodes S, with the fastening strips 31 which rest on the same S-vertices. Thanks to the presence of several series of orifices 34, it is possible to fix the platform 3 on these To this end, it suffices to place the fixing members 35 in the orifices of the series which open out onto the apices S.

As visible on Figures 1 to 6 , the shoe 2 is fixed on the central strip 32 of the platform 30, so that the holes 30 for the passage of the screws 24 are formed on this central strip 32. In addition, the shoe 2 is fixed on a longitudinal end of the platform 3, that is to say close to one of the two longitudinal free edges, to provide that the platform 3 provides a fixing of the shoe which limits the possibilities of tilting of the guardrail.

This attachment of the shoe on one end of the platform 3 is advantageous for improving the load resistance of the system 1.

As illustrated on Figures 6 to 10 , the system 1 further comprises an insulation layer 4 at least partially covering the platform 3 and having a cutout 40 for the passage of the shoe 2.

The insulation layer 4 more or less covers the platform 3, and this insulation layer 4 can pass over the platform 3 without making any jump, depending on the thickness of the insulation layer 4. Preferably, the insulation layer 4 overflows the platform 3 to also cover the cover tank B. The insulation layer 4 is only placed on the platform 3, without specific attachment, and then the insulation layer 4 is fixed , in particular mechanically fixed, on cover tank B.

This insulating layer 4 may comprise an insulating layer 41, made in particular of rock wool or polystyrene, covered by a layer or membrane 42.

Once the insulation layer 4 is in place, and as visible on the Figures 7 to 10 , the shoe 2 has a portion protruding from the insulating layer 4, in this case the mast 21. By varying the height of the spacer 22, or even the absence of the spacer 22 on the mast 21, it is possible to define the height of the shoe 2 protruding from the insulation layer 4.

As illustrated on Figures 8 to 10 , the system 1 further comprises a sealing means 5 sealingly mounted around the part of the shoe 2 protruding from the insulating layer 4, and fixed on the insulation layer by sealing the cutout 40, to ensure the seal between the shoe 2 and the insulation layer 4.

• une embase 51 creuse de forme annulaire montée autour du sabot 2 et fixée sur la membrane d'étanchéité 42 de la couche d'isolation 4 par collage ; et
• un manchon creux 52 prolongeant l'embase 51 et enserrant le mât 21.

This sealing means 5 comprises a sealing member 50 made in one piece, in particular aluminum, and having:

• a hollow base 51 of annular shape mounted around the shoe 2 and fixed on the sealing membrane 42 of the insulation layer 4 by gluing; and
• a hollow sleeve 52 extending the base 51 and enclosing the mast 21.

The base 51 has an upwardly flared shape, which is extended by the hollow sleeve 52 which is substantially conical towards its upper free end, and this free end has a diameter slightly greater than the spacer 22.

The face of the base 51 in contact with the sealing membrane 42 of the insulation layer 4, said lower face, is coated with a bonding substance or adhesive substance. For example, this bonding substance consists of bitumen that is sufficient to heat to allow bonding of the sealing member 50 to the sealing membrane 42.

This sealing means 5 further comprises a sealing flange 53 made of a thermoplastic material, which is mounted on the upper free end of the hollow sleeve 52 and which has an inner lip (not visible) tight around the periphery of the shoe 2.

On assembly, the sealing member 50 is slid on the clamping piece 23 by its base 51, then slid along the clamping piece 23 and the spacer 22, until the base 51 comes in contact against the sealing membrane 42 of the insulating layer 4. The sealing flange 53 can then be slid along the mast 21 to abut against the upper free end of the hollow sleeve 52. This by doing so, the circular inner lip of the sealing collar 53 prevents any liquid from infiltrating unexpectedly between the sleeve 52 and the spacer 22. Consequently, any risk of deterioration of the insulation layer 4 as well as the platform 3 is avoided.

• selon une première étape illustrée sur les figures 1 et 2, on assemble le sabot 2 et on fixe ce sabot 2 sur la plateforme ;
• selon une deuxième étape illustrée sur les figures 3 et 4, on fixe la plateforme 3 sur le bac de couverture B, soit parallèlement soit perpendiculairement aux créneaux ou nervures du bac B ;
• selon une troisième étape illustrée sur les figures 6 et 7, on recouvre au moins partiellement la plateforme 3 avec la couche d'isolation 4, en faisant passer le sabot 2 à travers la découpe 40 de cette couche d'isolation 4 ;
• selon une quatrième étape illustrée sur les figures 8 à 10, on monte l'organe d'étanchéité 50 sur le pourtour du sabot 2 avec collage de l'embase 50 sur le pourtour de la découpe 40 de la couche d'isolation 4, et on monte la collerette d'étanchéité 53 sur l'extrémité libre supérieure du manchon creux 52 avec serrage de l'entretoise 22 par sa lèvre interne.

Regarding the assembly, we follow the following steps:

• according to a first step illustrated on Figures 1 and 2 , the shoe 2 is assembled and this shoe 2 is fixed on the platform;
• according to a second step illustrated on Figures 3 and 4 , the platform 3 is fixed on the cover tray B, either parallel to or perpendicular to the crenellations or ribs of the tray B;
• according to a third step illustrated on the figures 6 and 7 , at least partially covers the platform 3 with the insulation layer 4, passing the shoe 2 through the blank 40 of the insulation layer 4;
• according to a fourth step illustrated on the Figures 8 to 10 the sealing member 50 is mounted on the periphery of the shoe 2 by gluing the base 50 around the periphery of the blank 40 of the insulating layer 4, and the sealing collar 53 is mounted on the upper free end of the hollow sleeve 52 with clamping of the spacer 22 by its inner lip.

Of course the implementation example mentioned above is not limiting in nature and further improvements and details can be made to the system according to the invention, without departing from the scope of the invention where other forms sealing means may for example be made.

Claims (11)

System (1) for attaching a railing post (M) to a self-supporting tray type roof covering tank (B) having crenellated ribs, said fastening system (1) having a shoe ( 2) railing designed to support said upright (M) and a platform (3) on which is fixed said shoe (2), characterized in that it further comprises: - an insulation layer (4) at least partially covering the platform (3) and having a cutout (40) for the passage of the shoe (2), said shoe (2) having a portion protruding from said insulation layer ( 4); and a sealing means (5) sealingly mounted around the portion of the shoe (2) protruding from said insulating layer (4), and fixed on said insulating layer (4) by sealingly covering said cutting (40). System (1) according to claim 1, wherein the sealing means (5) comprises a sealing member (50) having, on the one hand, a hollow base (51) mounted around the shoe (2) and fixed on the insulation layer (4) and, on the other hand, a hollow sleeve (52) extending the base and enclosing the portion of the shoe (2) protruding from said insulation layer (4). System (1) according to claim 2, wherein the base (51) of the sealing member (50) is fixed to the insulation layer (4) by gluing. System (1) according to claims 2 or 3, wherein the sealing means (5) further comprises a sealing collar (53) mounted on the upper end of the hollow sleeve (52) opposite the base ( 51), said sealing flange (53) having an inner lip clamped around the periphery of the shoe (2). System (1) according to any one of the preceding claims, wherein the shoe (2) comprises a support member (20) fixed on the platform (3), in particular by screwing, and a mast (21) mounted on the supporting member (20) and adapted to support the railing post (M), said mast (21) protruding from said insulating layer (4). System (1) according to any one of the preceding claims, in which the platform (3) has two substantially coplanar longitudinal strips, said fastening strips (31), said fastening strips (31) extending along a longitudinal axis and being shaped to bear on the crest (S) peaks of the cover tank (B), each fastening band (31) having at least one series of several orifices (34) for the passage of fasteners (35) of the platform (3) on said peaks (S) of the cracks of the cover tank (B), each series of orifices (34) being distributed in a direction transverse to the longitudinal axis, preferably perpendicular to the longitudinal axis . System (1) according to claim 6, wherein each fastening strip (31) has several series of orifices (34) for the passage of fasteners of the platform (3) on the peaks (S) of crenellations roof covering tank (B), each series of orifices (34) being distributed in a direction transverse to the longitudinal axis and the sets of the same fastening strip (31) being spaced apart from one another according to the longitudinal axis. System (1) according to claims 6 or 7, wherein the platform (3) has a crenellated shape with the two fastening strips (31) which surround a central strip (32) longitudinal raised above the two said fastening strips ( 31). System (1) according to claim 8, wherein the shoe (2) is fixed between the two fastening strips (31) on the central strip (32). System (1) according to any one of the preceding claims, wherein the shoe (2) is fixed on a longitudinal end of the platform (3). Assembly of a fastening system (1) according to any one of the preceding claims on a self-supporting tray type roof covering tank (B) having longitudinal crenellated ribs, in which the platform (3) is in support and fixed on the tops (S) of crenellations of the cover tray (B).

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