EP1700975A1 - Scaffold mountable in window opening - Google Patents

Abstract

The scaffolding has external and internal vertical bars (26, 29) located in external and internal zones comprising two support units supporting against outer and inner surfaces of an exterior wall, below and above window recesses (12, 14), respectively. Corners (38, 38`) fixed in a vertically adjustable manner to the bar (26), has a vertical branch and horizontal branches (40, 40`) supporting a horizontal platform (18). The support units have rubber support pads (28a, 32a). The internal vertical bar has a third support unit supported on the inner surface of the wall, below the window recesses, where the support unit has a rubber support pad (34a). The platform is apt to be positioned below and above the level of lower and upper edges of the window recesses.

Description

The present invention relates to work platform supports and more particularly to external scaffolds.

It concerns more precisely a scaffolding able to bear on a substantially vertical wall having an outer face and an inner face, delimiting an inner zone and an outer zone, in which is formed at least one opening with which said scaffolding cooperates.

In general, such scaffolds are used when working on an exterior wall.

Unlike traditional scaffolds that rest on the ground surface, such scaffolding is maintained by cooperating with one or more openings in a wall, such as windows.

US 4,079,813 describes a folding scaffold able to cooperate with a single window supported on the outer and inner faces of the wall.

This scaffolding has two major drawbacks: on the one hand, the platform has a very small surface, which limits the number of people who can climb on the platform as well as the useful surface, and on the other hand, it does not It is not possible to adjust the vertical position of the platform, which may prevent a worker from accessing the area above the window bay.

The document FR 959 745 represents a scaffolding of windows able to cooperate with two windows, whose platform also has the disadvantage, when the scaffolding is installed, not being able to be adjustable in height.

In addition, it is necessary that the edges of the windows are arranged at the same height, which is not always the case in practice.

The object of the invention is to provide a scaffold substantially free from the disadvantages mentioned above.

• une barre verticale extérieure située dans la zone extérieure comportant des premiers moyens d'appui aptes à prendre appui contre la face extérieure du mur, en dessous de l'ouverture ;
• une barre verticale intérieure située dans la zone intérieure, comportant des deuxièmes moyens d'appui aptes à prendre appui contre la face intérieure du mur, au dessus de l'ouverture ;
• une barre horizontale transversale fixée aux barres verticales intérieure et extérieure, et traversant le mur par l'ouverture ;
• une cornière fixée de manière réglable verticalement à la barre verticale extérieure, comportant une branche verticale et une branche horizontale apte à soutenir une plate-forme horizontale.

The object is achieved by the fact that the scaffolding according to the invention comprises at least one fixing element comprising:

• an outer vertical bar located in the outer zone comprising first support means able to bear against the outer face of the wall, below the opening;
• an inner vertical bar located in the inner zone, comprising second support means able to bear against the inner face of the wall, above the opening;
• a transverse horizontal bar attached to the inner and outer vertical bars, and passing through the wall through the opening;
• a bracket fixed vertically adjustable to the outer vertical bar, having a vertical leg and a horizontal branch adapted to support a horizontal platform.

Thus, the vertical position of the platform can be adjusted so that the user can access a larger wall surface than in the case where the platform is fixed.

It is understood that the scaffold according to the invention can cooperate with several openings. In this case, each opening cooperates with a fixing element and the horizontal platform of the scaffolding is supported by the horizontal branches of the brackets of the fastening assemblies.

As the angles are adjustable in height, it is not necessary that the lower edges of the openings are arranged on the same height because it is always possible to position the platform horizontally by adjusting the vertical position of each horizontal branch supporting the plate -form.

It is further understood that the multiple support means give the scaffold a certain stability.

When a worker is on the platform, an already known scaffold tends to pivot about a horizontal axis passing through lower support means.

The judicious position of the first and second support means prevents this pivoting by bearing on the outer and inner faces of the wall, respectively below and above the opening so as to block the pivoting of the scaffolding .

Advantageously, the inner vertical bar further comprises third support means adapted to bear on the inner face of the wall, below the opening.

Preferably, the third support means are located at a height between that of the lower edge of the opening and that of the first support means.

It is understood that these third support means improve the locking of the scaffold relative to the wall with which it cooperates, and thus, improves the safety of the scaffolding.

Preferably, the second and third support means are located at both ends of the inner vertical bar.

Advantageously, the horizontal bar further comprises fourth support means adapted to take up vertically on a lower edge of an opening.

It is understood that these fourth support means are used to lock the scaffold vertically. In particular, they prevent the scaffold from moving down due to the scaffold's own weight and / or the weight of the user, which allows the scaffold to be used safely.

Preferably, the first, second, third and fourth bearing means comprise at least one adjustable rubber support pad.

It is understood that the rubber prevents the pad from slipping on the wall, transversely to the direction of support. Any other material with a high coefficient of friction may be used.

Advantageously, the platform is able to be positioned below the level of the lower edge of an opening.

Thus, the user can easily access the portion below the opening, without having to disassemble or move the scaffold.

Advantageously, the platform is able to be positioned above the level of the upper rim of an opening.

Thus, the user has the opportunity to access the portion above the opening, without having to disassemble or move the scaffold.

Advantageously, the vertical branch of a bracket is able to slide vertically in a channel formed in the outer vertical bar.

The channel preferably extends along the outer vertical bar, so that the vertical leg can slide vertically over the entire length of the outer vertical bar.

Preferably, the vertical leg comprises a plurality of fastening means adapted to cooperate with fastening means disposed on the outer vertical bar so as to fix the vertical leg in the channel of different heights.

It is then understood that it is possible to position the angle at different heights and, therefore, that it is easy to adjust the vertical position of the platform from a position below the opening to a position located above the opening.

Advantageously, the angle can be positioned in at least two ways relative to the outer vertical bar so that the horizontal leg can be disposed either above or below the vertical leg.

Thus, without changing the fixing position of the vertical branch, there are two positions for the platform: a high position when the horizontal branch is located above the vertical branch, and a low position when the horizontal branch is located below the vertical branch.

These two positions are particularly interesting when it is necessary to position the platform in an extreme high position or in an extreme low position, in particular to reach the parts above and below the opening.

According to an advantageous embodiment of the invention, the scaffold comprises at least two fastening assemblies.

Preferably, it is understood that each fastener cooperates with an opening formed in the wall, but however, two fastener assemblies can cooperate with one and the same opening.

Preferably, the scaffolding cooperates with two openings formed in the wall and disposed substantially at the same height.

Thus, it is understood that the scaffolding preferably comprises two sets of separate fasteners, the platform is supported by the two horizontal branches of the two angles of two sets of fastening cooperating with the two openings and that the position of the platform is adjustable in a vertical direction.

Adjusting the vertical position of the platform is done by positioning the angles so that their horizontal branches are arranged in the same horizontal plane.

Without departing from the invention, it is understood that the scaffolding is able to cooperate with two, three or more openings provided they are arranged at about the same height.

• la figure 1 est une vue en perspective d'un échafaudage selon l'invention comportant deux ensembles de fixation montés sur deux fenêtres ménagées dans un mur vertical ;
• la figure 2 est une vue en perspective d'un élément de fixation d'un échafaudage conforme à l'invention ;
• la figure 3 est une vue latérale en coupe d'une baie de fenêtre sur laquelle est montée un élément de fixation d'un échafaudage selon l'invention, la cornière étant disposée de telle sorte que sa branche horizontale est située au dessus de la branche verticale ; et
• la figure 4 est une vue latérale en coupe d'une baie de fenêtre sur laquelle est montée un élément de fixation d'un échafaudage selon l'invention, la cornière étant disposée de telle sorte que sa branche horizontale est située en dessous de la branche verticale.

The invention will be better understood and its advantages will appear better on reading the detailed description which follows, of an embodiment shown by way of non-limiting example. The description refers to the accompanying drawings in which:

• Figure 1 is a perspective view of a scaffold according to the invention comprising two fixing assemblies mounted on two windows formed in a vertical wall;
• Figure 2 is a perspective view of a fastening element of a scaffold according to the invention;
• FIG. 3 is a sectional side view of a window bay on which is mounted a scaffolding fastening element according to the invention, the angle being arranged in such a way that its horizontal branch is located above the branch. vertical; and
• FIG. 4 is a sectional side view of a window bay on which is mounted a scaffolding fastening element according to the invention, the angle being arranged in such a way that its horizontal branch is located below the branch; vertical.

Referring to Figure 1, there will now be described in more detail a preferred embodiment of a scaffold according to the present invention.

The scaffold 10 shown here is designed to cooperate with two windows bays 12, 14 formed substantially at the same height in an exterior wall 16 of a house.

However, it would not go beyond the invention if the scaffold 10 cooperated with a single opening, or with a plurality of openings disposed substantially at the same height.

As seen in Figure 1, the two window openings 12, 14 have different dimensions and their lower edges are not arranged in the same horizontal plane. This representation makes it possible to clearly show the adaptability of the scaffolding according to the invention to any type of window bays. Indeed, the scaffold according to the invention advantageously allows to cooperate with several openings arranged substantially but not exactly the same height.

The scaffold 10 supports a horizontal platform 18 which extends along the wall 16 in a plane substantially orthogonal to the surface of the wall for a distance between the vertical edges furthest from the two openings 12, 14 forming the bays. window 12,14.

This platform 18 is intended to support one or more users 20.

The horizontal platform 18 is supported by two fastening assemblies 22,24 disposed substantially at each end of said platform and each cooperating with a window opening.

As can be seen from FIG. 1, the scaffold 10 according to the invention bears on the outside face of the wall 16 and, consequently, it is not necessary for the scaffolding 10 to bear on the ground.

More specifically, each fastening element 22,24 is intended to cooperate with a window bay so as to be secured to the wall 16.

As will be described later, each fastening element 22,24 is adapted to bear against the outer faces 25 and 27 of inner wall 16.

With the help of Figure 2, we will now describe in more detail a fastener 22,24.

Each fastener 22,24 comprises an outer vertical bar 26 whose lower end comprises first bearing means 28 preferably comprising a pair of rubber bearing pads 28a, each of the bearing pads preferably having the shape of a thick disc forming a bearing surface disposed in a substantially vertical plane.

The fastening element 22 further comprises an inner vertical bar 29 which has second support means 32 at its upper end and third support means 34 at its lower end.

Preferably, the length of the inner vertical bar 29 can be adjusted by means of a vertical telescopic arm 29 ', which is integral with the inner vertical bar, in which it slides by means of a screw 60 clamping.

The interest of this vertical adjustment will be described in more detail below.

The second support means 32 comprise a pair of rubber bearing pads 32a, each of the support pads also preferably having the form of thick discs forming bearing surfaces disposed in a substantially vertical plane.

Preferably, the second support means 32 may comprise an additional pair of rubber bearing pads 33a, each of the support pads preferably being in the form of thick discs forming bearing surfaces disposed in a substantially horizontal plane.

The third support means 34 comprise a pair of rubber bearing pads 34a, each of the support pads preferably being in the form of thick discs forming bearing surfaces disposed in a substantially vertical plane.

Preferably, the clamping screw 60 may comprise at its end a bearing pad 60a similar to those described above.

The bearing pads 28a, 32a, 34a of the first, second and third bearing means and the bearing pad 60a associated with the clamping screw 60, are arranged in such a way that their respective bearing surfaces are in contact with each other. -a-vis.

The outer 26 and inner 29 vertical bars are integrally connected together via the ends of a transverse horizontal bar 36.

Viewed from the second support means 32, the horizontal bar 36 is fixed substantially preferentially to two-thirds of the length of the inner vertical bar 29.

Similarly, seen from the first support means 28, the horizontal bar 36 is fixed substantially to two-thirds of the length of the outer vertical bar 26.

Obviously, these attachment positions are given by way of example and do not constitute a limitation.

In addition, the length of the horizontal bar 36 can be adjusted, preferably by means of a telescopic arm 36 ' visible in Figure 2, so as to adapt the fastener to the thickness of the wall 16.

For reasons explained hereinafter, however, it is advantageous for the second support means 32 to be positioned between the horizontal bar 36 and the first support means 28, as shown in FIG . 2.

The horizontal bar 36 preferably but not necessarily has fourth bearing means 30 comprising a rubber bearing pad 30a having the shape of a thick disk forming a bearing surface disposed in a substantially horizontal plane whose function will be explained. below.

Each fastening element further comprises an angle bracket 38 adjustably fixed to the outer vertical bar 26.

This bracket 38 comprises a horizontal branch 40 and a vertical branch 42 able to slide vertically in a channel 44 formed in the outer vertical bar 26.

Preferably, the outer vertical bar 26 has, in a transverse plane, a section substantially shaped "U".

As seen in Figure 2, the outer vertical bar 26 has a plurality of transverse bores 45 disposed periodically over substantially its entire length. The vertical leg 42 of the bracket 38 also has a plurality of transverse bores (not shown here) and the fixing of the outer vertical bar 26 with the vertical leg 42 of the bracket 38 can be achieved with pins 47 traversing transversely said vertical bar 26 and said branch 42 through said bores.

Referring to Figure 1, it is understood that the horizontal leg 40 of the bracket 38 is intended to support the platform 18. More specifically, it is the two horizontal branches 40,40 ' of the two brackets 38,38' of two sets of fasteners 22,24 that support the platform 18.

The horizontal branch 40 of the bracket 38 is advantageously unfoldable in the direction of its length so as to adapt to the width of the platform 18.

Preferably, the horizontal leg 40 comprises a telescopic arm 46 which is provided at its end with a vertical rod holder 48, intended to hold one of the two horizontal arms of a barrier 50 forming guardrails, shown in FIG .

With the help of Figure 3, we will now describe how a fastener 22 bears on the wall 16.

Figure 3 shows a sectional side view of the window bay on which is mounted a fastener 22,24.

The wall 16 of the house shown in this figure delimits an inner zone 52 and an outer zone 54.

The outer vertical bar 26 is disposed in the outer zone 54, the rubber pad 28a of the first support means being disposed below the window bay.

The inner vertical bar 29 is disposed in the inner zone 52, the buffer 32a of the second support means 32 bearing above the window bay and the buffers 34a of the third support means 34 bearing support below the window bay. It is therefore understood that the inner vertical bar 29 preferably has a length substantially greater than the height of the window bay.

Naturally, the fixing element 22 is arranged so that the horizontal bar 36 passes through the window bay, and the buffer 30 of the fourth support means is arranged to bear on a lower edge 56 of the window bay .

With the help of Figure 3 and Figure 1, it is understood that when a worker 20 is positioned on the platform 18, its weight creates a torque that tends to rotate back the fastener 22,24 in a direction away from the wall 16.

In other words, referring to FIG. 3, it will be understood that the weight of a worker 20 tends to pivot the fastening element 22 in the counterclockwise direction.

The assembly formed by the rubber bearing pads 28a, 32a of the first and second support means 28, 32 allows advantageously to prevent the fastening element 22 from pivoting in a counterclockwise direction.

In addition, the assembly formed by the rubber support pads 28a, 34a of the first and third support means 28,34 advantageously allows to tighten the clamp part of the wall that lies beneath the window opening.

It is thus understood that the third support means 34 are not systematically necessary, however they improve the blocking of the scaffolding by providing additional support and improves the safety of the scaffolding.

The rubber pad 30a of the fourth support means 30 for their part makes it possible to lock the fastening element vertically 22 by resting on the lower edge of the window bay.

As can be seen in particular in FIG. 2, provision can be made for the fourth support means 30 to be horizontally displaceable in the direction of the transverse horizontal bar 36, so as to be able to adapt to the shape of the lower edge, for example 56.

Still with reference to FIG. 1, it is understood that the support pad 60a associated with the clamping screw 60 is arranged so as to be able to bear on the inside face 27 of the wall 16 , above the bay of window 12.

When they are present, the support pads 33a located at the upper end of the inner vertical bar 29 and arranged in a horizontal plane, are able to bear against a ceiling 17.

It is therefore understood that it further improves the locking of the fastener and thus the safety of the scaffolding.

Preferably, all the support means are adjustable vertically and / or horizontally so as to adapt to the shape of the outer and inner faces of the wall 16, and the lower edge of the window bay.

With the aid of FIGS. 3 and 4, we will now describe the two orientations that the horizontal branch 40 can take .

Indeed, the angle 38 can be positioned at least two ways with respect to the outer vertical bar so that the horizontal leg 40 can be disposed either above or below the vertical leg 44.

In FIG. 3, the angle is positioned in such a way that the horizontal branch 40 is disposed above the vertical branch 42.

And, in Figure 4, the angle is positioned so that the horizontal leg 40 is disposed below the vertical leg.

More specifically, the angle 38 is fixed to the lower end of the outer vertical bar 26 so that it is no longer possible to lower the vertical leg 42 of the bracket 38.

By rotating the angle of 180 ° so that the horizontal leg 40 is positioned below the vertical leg, and without changing the height position of the horizontal leg, it is possible to bring the platform 18 in a extreme low position, as shown in Figure 4, so that a plane of the platform 18 can be disposed below a substantially horizontal plane passing through the lower edge 56, so that the user can access easily to an area below the lower edge 56.

It is understood that it is also possible to bring the platform 18 to an extreme high position, by arranging the vertical branch of the bracket 34 at the top of the outer vertical bar 26 while having the horizontal branch of the bracket arranged above the vertical branch.

Claims (14)

Scaffolding (10) able to bear on a wall (16) substantially vertical having an outer face (25) and an inner face (27) defining an inner zone (52) and an outer zone (54), in which is provided at least one opening (12, 14) with which said scaffold cooperates, said scaffolding being characterized in that it comprises at least one fixing element (22, 24) comprising: - an outer vertical bar (26) located in the outer zone (54) having first bearing means (28, 28a) adapted to bear against the outer face (25) of the wall (16), below the opening (12,14); - an inner vertical bar (29) located in the inner zone (52), comprising second support means (32,32a) adapted to bear against the inner face (27) of the wall (16), above the opening (12,14); - a transverse horizontal bar (36) attached to the inner (29) and outer (26) vertical bars, and through the wall (16) through the opening (12,14); an angle bracket (38, 38 ') vertically adjustable to the vertical upright bar (26), having a vertical leg (42) and a horizontal leg (40, 40') adapted to support a horizontal platform (18); ). Scaffolding according to claim 1, characterized in that the inner vertical bar (29) further comprises third support means (34, 34a) adapted to bear on the inner face (27) of the wall (16), underneath of the opening (12,14). Scaffolding according to claim 2, characterized in that the second (32,32a) and third (34,34a) support means are located at both ends of the inner vertical bar (29). Scaffolding according to any one of claims 1 to 3, characterized in that the horizontal transverse bar (36) further comprises fourth support means (30,30a) adapted to take up a vertical bearing on a lower edge of the opening (12,14). Scaffolding according to claim 4, characterized in that the fourth (30, 30a) bearing means comprise at least one adjustable rubber support pad (30a). Scaffolding according to any one of claims 2 to 5, characterized in that the first (28,28a), second (32,32a) and third (34,34a) support means comprise at least one adjustable support pad rubber (28a, 32a, 34a). Scaffold according to any one of claims 1 to 6, characterized in that the platform (18) is adapted to be positioned below the level of the lower rim of the opening (12,14). Scaffolding according to any one of claims 1 to 7, characterized in that the platform (18) is adapted to be positioned above the level of the upper rim of the opening (12,14). Scaffolding according to any one of claims 1 to 8, characterized in that the vertical leg of an angle (38) is slidable vertically in a channel formed in the outer vertical bar (26). Scaffold according to one of claims 1 to 9, characterized in that the angle (38) can be positioned in at least two ways with respect to the outer vertical bar (26) so that the horizontal leg (40) can be disposed either above or below the vertical leg (44). Scaffold according to one of Claims 1 to 10, characterized in that it comprises at least two fastening assemblies (22, 24). Scaffolding according to claim 11, characterized in that the platform is supported by two horizontal limbs (40, 40 ') of two angles (38, 38') of two separate assemblies (22, 24) and in that the position of the platform (18) is adjustable in a vertical direction. Scaffolding according to claim 11 or 12, characterized in that it comprises two fastening assemblies (22, 24) adapted to cooperate with two distinct openings (12, 14) forming window openings. Scaffolding according to any one of claims 1 to 13, characterized in that it further comprises a vertical barrier (50) forming a guard rail mounted on the horizontal arm (40, 40 ') of the bracket (38, 38'). ).

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