Support structure for performing activities at height

Abstract

A support structure (100) for performing activities at height is described, comprising: a first frame (105) adapted to be rested and secured on a roofing surface (T) of a building (E), a second frame (110) connected to the first frame (105) and adapted to assume a substantially vertical orientation such that it can face a wall (P) of the building (E), below the roofing surface (T), at least when the first frame (105) is rested and secured on the roofing surface (T) itself, a platform (225) connected to the second frame (110) and adapted to assume a substantially horizontal orientation, at a lower height with respect to the roofing surface (T), at least when the second frame (110) is oriented substantially vertically and facing the wall (P) of the building (E), and a stabilising element (260) connected to the second frame (110) and adapted to be placed in contact with the wall (P) of the building (E), at least when the second frame (110) is oriented substantially vertically and facing said wall (P).

Description

Technical Field

[0001] The present invention relates to a support structure adapted to act as a scaffold to facilitate and simplify manual work activities, e.g., of a construction or plant engineering nature, which must be carried out at heights on building façades, especially at the base of the roof.State of the art

[0002] As is known, the execution of construction and / or installation activities on building façades, such as grouting, plastering, painting, installation of electrical cables, telecommunication networks, refrigeration systems, and much more, requires that the assigned operators be able to reach the height corresponding to the area to be treated.

[0003] This can be achieved starting from the ground, e.g. by setting up high scaffolding close to the fagade or by using lifting devices, the high cost of which, however, is not always compatible with the scale of the work to be performed.

[0004] Alternatively, operators are known to descend down from the roof, for example using safety harnesses that are hung, e.g. by means of a rope system, from special anchoring points set up on the roofing surface.

[0005] However, working while hanging from a rope system is not always easy for operators and, especially when the activity lasts for a long time, can also become very uncomfortable and tiring.

[0006] Another drawback of this solution is that, starting from the anchoring point, the ropes first extend along the roofing surface up to the eaves and then, flexing around the eaves, they orient themselves vertically to support the operator in front of the façade.

[0007] This passage around the eaves causes the ropes to locally exert a rather intense concentrated pressure on the eaves, proportional to the weight of the operator, which can sometimes damage the structural elements placed at the eaves themselves, such as rainwater collection channels.

[0008] To overcome this drawback, self-supporting brackets have been proposed to be applied at the eaves, with the function of supporting and deflecting the ropes with respect to their natural positioning, specifically, so as to keep them away from the eaves.

[0009] However, these brackets do not solve the inconvenience of the discomfort and fatigue of having to work for a long time hanging from a harness.

[0010] Presently, the only available solution to this second drawback is to provide suspended support structures that, while being hung from the roof by means of ropes, make a platform available, on which operators (in any case equipped with harnesses and safety ropes) can sit or stand while performing their activities.

[0011] However, such support structures can be subject to non-negligible oscillations, e.g. due to wind, shifting loads or other stresses, which make it difficult to carry out activities and may cause damaging impacts against the building.Disclosure of the invention

[0012] An aim of the present invention is to solve or at least mitigate one or more of the aforementioned drawbacks of the prior art.

[0013] Another aim is that of achieving such an objective within the context of a simple, rational and relatively cost-effective solution.

[0014] These and other aims are reached by the characteristics of the invention as set forth in the independent claim 1. The dependent claims outline preferred and / or particularly advantageous aspects of the invention.

[0015] In particular, an embodiment of the invention provides a support structure, typically of a suspended type (i.e. without resting directly on the ground), for performing activities at height, comprising: a first frame adapted to be rested and secured on a roofing surface (roof) of a building, a second frame connected to the first frame and adapted to assume a substantially vertical orientation such that it faces a wall of the building, below the roofing surface, at least when the first frame is rested and secured on the roofing surface itself, a platform connected to the second frame and oriented substantially horizontally, at a lower height with respect to the roofing surface, at least when the second frame is oriented substantially vertically and facing the wall of the building, and a stabilising element connected to the second frame and adapted to be placed in contact with the wall of the building, at least when the second frame is oriented substantially vertically and facing that wall.

[0016] Thanks to the presence of the stabilising element in contact with the wall, which is added to the first frame rested and secured on the roofing surface, the support structure can be applied to the building in a much more stable and secure manner with respect to the known solutions.

[0017] As a result, the possibility of oscillations and impacts is reduced and, at the same time, a much firmer platform is made available, on which an operator (in any case equipped with a harness and safety ropes) can find a comfortable footing (standing or possibly sitting) while performing his or her tasks.

[0018] According to an aspect of the invention, the second frame can be connected to the first frame by means of a first junction assembly, which is adapted to allow a mutual rotation of the first frame and the second frame around a first hinge axis oriented so as to be substantially horizontal, at least when the first frame is rested and secured on the roofing surface.

[0019] Thereby, the support structure can be advantageously adapted to both flat and pitched roofs with different pitches.

[0020] To lock the support structure in the most appropriate configuration, it can also comprise first locking means to selectively prevent the mutual rotation (preferably in both directions) of the first and second frames around said first hinge axis.

[0021] According to another aspect of the invention, the platform can be connected to the second frame by means of a second junction assembly, which is adapted to allow a mutual rotation of the platform and the second frame around a second hinge axis (also) oriented so as to be substantially horizontal, at least when the first frame is rested and secured on the roofing surface.

[0022] Thereby, the platform can be folded / tilted onto the second frame, e.g. to reduce the space required for the support structure during transport and installation.

[0023] To lock the platform at least in the working configuration, the support structure can comprise second locking means to selectively prevent the mutual rotation of the platform and the second frame around said second hinge axis.

[0024] Another aspect of the invention is that the second frame can be extendable and retractable along a predetermined elongation direction, so as to vary the height of the platform, at least when the second frame is oriented substantially vertically and facing the wall of the building.

[0025] Thereby, it is advantageously possible to adjust, at least within certain limits, the working space available to the operators below the roofing surface of the building.

[0026] Also in this case, it is preferable that the support structure further comprises third locking means to selectively prevent the second frame from extending and shortening along said elongation direction, so as to lock the platform at the desired height.

[0027] According to another aspect of the invention, the stabilising element can be connected to the second frame by means of a sliding assembly adapted to allow mutual displacements of the stabilising element and the second frame along a predetermined translation direction, which is adapted to assume a substantially horizontal orientation, at least when the second frame is oriented substantially vertically and facing the wall of the building. Thanks to this solution, the distance between the second frame and the stabilising element can be adjusted so that the latter can be in contact with walls of different buildings. To lock the second frame and the stabilising element at the most appropriate mutual distance, the support structure can be equipped with fourth locking means adapted to selectively prevent the mutual displacement of the stabilising element and the second frame along the said translation direction.

[0028] A further aspect of the invention is that the stabilising element can be connected to the second frame by means of the platform, to which the stabilising element can be slidably coupled to be able to be moved along said translation direction.

[0029] This solution allows to make the support structure more compact overall.

[0030] According to a further aspect of the invention, the support structure can also comprise a bearing element connected to the first frame and adapted to stay in contact with the roofing surface, at least when the first frame is rested and secured on the roofing surface itself.

[0031] This bearing element has the advantage of further increasing the stability of the support structure.

[0032] A further aspect of the invention is that the support structure can comprise a guide rail adapted to be fixed horizontally on the roofing surface and to which the first frame is slidably coupled.

[0033] Thanks to this solution, the support structure becomes a sliding type and can be advantageously moved, e.g. along the edge of the roofing surface, without the need to disassemble and reassemble it.

[0034] For the same reason, it is also preferable that the stabilising element can in turn comprise one or more wheels adapted to roll in contact with the wall of the building.

[0035] Similarly, the bearing element (if present) can also comprise one or more wheels adapted to roll in contact with the roofing surface.

[0036] Going into more detailed aspects, the second frame can comprise at least: a pair of parallel and mutually spaced apart uprights, each of which can have a first end connected to the first frame and a second and opposite end connected to the platform, and a plurality of cross-pieces individually fixed to both said uprights and mutually spaced apart.

[0037] Thereby, the second frame assumes a ladder-like shape and can therefore be used to facilitate the operators' descent and ascent from the platform.

[0038] In particular, each upright of the second frame can comprise at least two parallel bars, slidingly coupled to each other so as to be adapted to mutually slide in a direction parallel to their longitudinal extension.

[0039] This aspect provides a rather simple and reliable solution for making an extendable and retractable second frame, which, as mentioned above, allows to adjust the platform height.

[0040] Furthermore, this solution allows the second frame to be given the conformation of an extendable (or telescopic) ladder, formed by two portions of the ladder slidably coupled to each other, so as to continue facilitating the ascent and descent of operators.

[0041] Again with a view to providing a constructively rather simple support structure, the first frame can in turn comprise at least one pair of parallel and mutually spaced apart spars, each of which has one end connected to a first end of a respective upright of the second frame and an opposite end to which a hook or anchoring eye may be attached.

[0042] If necessary, the first frame can further comprise one or more cross-pieces individually fixed to both said spars.

[0043] In this context, the stabilising element can comprise at least one bar oriented perpendicular to the uprights of the second frame and having a length greater than the distance therebetween.

[0044] Similarly, the bearing element can comprise at least one bar oriented perpendicular to the spars of the first frame and having a length greater than the distance therebetween, e.g. substantially equal to the length of the bar of the stabilising element.Brief description of the drawings

[0045] Further features and advantages of the invention will be more apparent after reading the following description provided by way of a non-limiting example, with the aid of the figures illustrated in the accompanying drawings. Figure 1 is a side view of a support structure according to an embodiment of the present invention shown installed. Figure 2 is a first axonometric view of the support structure shown in Figure 1. Figure 3 is a second axonometric view of the support structure shown in Figure 1. Figure 4 is a side view of the support structure shown in Figure 1. Figure 5 is a front view of the support structure shown in Figure 1. Figure 6 is a detail of Figure 2 shown on an enlarged scale. Figure 7 is another detail of Figure 2 shown on an enlarged scale. Figure 8 is a third detail of Figure 2 shown on an enlarged scale. Figure 9 is a side view of a support structure according to an alternative embodiment of the present invention shown installed. Figure 10 is a first axonometric view of the support structure shown in Figure 9. Figure 11 is a detail of Figure 10 shown on an enlarged scale. Figure 12 is another detail of Figure 10 shown on an enlarged scale. Figures 13 to 15 show axonometric views of the support structure in Figure 1 during as many steps of the method with which it can be folded. Detailed description

[0046] With the aid of the above-mentioned figures, a support structure is described, referred to globally as 100, which is intended to act as a scaffold to facilitate and simplify manual work activities, e.g. construction or plant engineering, to be performed on the vertical walls of buildings, especially at the base of the roof.

[0047] The support structure 100 is generally of the suspended type, i.e. without directly resting on the ground.

[0048] The support structure 100 firstly comprises a first frame 105 adapted to be placed and stay resting on the roof or, more generally, on any roofing surface T of a building E. The roofing surface T of building E can be horizontal, e.g. in the case of a flat roof, or sloping, e.g. in the case of a pitched roof.

[0049] The first frame 105 is preferably adapted to stay resting on the roofing surface T, so that a portion thereof protrudes outside the perimeter of the latter, for example outside the eaves line, i.e. outside that lower horizontal perimeter line of the roofing surface T along which the elements (e.g. channels) for collecting rainwater are normally applied.

[0050] As can be seen in Figure 2, the first frame 105 can comprise, for example, a pair of parallel, side-by-side and mutually spaced apart spars 115, which can be rigidly joined to each other by means of one or more connecting cross-pieces 120.

[0051] Each spar 115 comprises a first end 125 and a second opposite end 130, which can be individually aligned, in the transverse direction, with the first end 125 and the second end 130 of the other spar 115, respectively.

[0052] The first frame 105 can stay resting on the roofing surface T so that the lying plane of the two spars 115, i.e. the plane with respect to which the spars 115 are mutually coplanar, is substantially parallel to the roofing surface T.

[0053] If the roofing surface T is sloping, it may also be preferable for the spars 115 to be oriented parallel to the fall line.

[0054] It should be specified that "stay resting on" does not necessarily mean that the first frame 105 is adapted to stay in direct contact with the roofing surface T, but that at least part of its weight bears directly or indirectly on the roofing surface T.

[0055] For example, it is envisaged that the support structure 100 can comprise a bearing element 135, which is connected to the first frame 105, preferably fixed thereto, and is adapted to stay in direct contact with the roofing surface T.

[0056] Thereby, the bearing element 135 can be interposed between the roofing surface T and the first frame 105, which can thus remain spaced apart from the roofing surface T itself. Specifically, the bearing element 135 can comprise a bar 140, oriented perpendicularly and fixed to both spars 115, e.g. by means of respective connecting brackets, which can be adapted to stay in direct contact with the roofing surface T.

[0057] This bar 140 can be longer than the distance separating the pair of spars 115, e.g. equal to or greater than twice such a distance, so as to protrude from both sides of the pair, increasing the resting stability.

[0058] In addition to staying resting on the roofing surface T, it is preferable that the first frame 105 can be firmly secured thereto, e.g. to one or more anchoring points (not illustrated) with which the roofing surface T can be equipped.

[0059] Anchoring points of this type are, for example, those envisaged in EN 516 or EN 517 or EN 795 or CENT / TS 16415 or UNI 11578.

[0060] The first frame 105 cam thus comprise two hooks or anchoring eyelets 150, each of which can be fixed at the first end 125 of a respective spar 115 and can be secured to at least one respective hooking point, for example by means of ropes.

[0061] The support structure 100 further comprises a second frame 110, which is connected to the first frame 105, preferably at the portion of the first frame 105 intended to protrude with respect to the perimeter of the roofing surface T, for example at the second ends 130 of the spars 115.

[0062] In general, the second frame 110 is in any case connected to the first frame 105 so as to be adapted, when the first frame 105 is resting on the roofing surface T (e.g. according to the manners outlined above), of assuming a substantially vertical (and descending) orientation, in which it faces a wall P of the building E, below the roofing surface T.

[0063] In practice, the second frame 110 is connected to the first frame 105 so as to be able to assume, with respect to the latter, a generally inclined orientation (sharp), for example by forming therewith an angle approximately equal to the angle formed between the roofing surface T and the wall P.

[0064] Since the slope of the roofing surface T is not always the same, the second frame 110 can be connected to the first frame 105 by means of a junction assembly, globally indicated as 155, which allows a mutual rotation of the first frame 105 and the second frame 110 around a prefixed hinge axis A.

[0065] This hinge axis A is chosen so that, when the first frame 105 is resting on the roofing surface T (e.g. according to the manners outlined above), it can assume a substantially horizontal orientation.

[0066] For example, the hinge axis A can be perpendicular to the spars 115 of the first frame 105 and can possibly be placed at the second ends 130 thereof.

[0067] Thereby, the mutual inclination between the first frame 105 and the second frame 110 can be adjusted appropriately according to the inclination of the roofing surface T.

[0068] Preferably, the support structure 100 further comprises locking means for selectively preventing (blocking) the mutual rotation of the first frame 105 and the second frame 110 around said hinge axis A (in both directions), for example after reaching the inclination corresponding to the slope of the roofing surface T.

[0069] In particular, these locking means can be adapted to lock the first frame 105 and the second frame 110 in a plurality of different predetermined mutual inclinations, for example at right angles, and in one or more further different mutual inclinations approximating the inclinations of the most common roofing surfaces T.

[0070] Going into more detail, the second frame 110 can have a structure similar to that of a ladder.

[0071] For example, the second frame 110 can comprise a pair of parallel uprights 160, side-by-side and mutually spaced apart, and possibly one or more cross-pieces 165, individually fixed to both of these uprights 160, so as to rigidly join them together.

[0072] The cross-pieces 165, which can be oriented perpendicularly to the uprights 160, can be distributed in succession and mutually spaced apart along the longitudinal extension of the uprights 160 themselves, so as to define the steps of the ladder.

[0073] Each upright 160 comprises a first end 170 and a second opposite end 175, which can be individually aligned, in the transverse direction, with the first end 170 and the second end 175 of the other upright 160, respectively.

[0074] The first end 170 of each upright 160 can be connected to the second end 130 of a respective spar 115 of the first frame 105, preferably by means of a respective hinge joint, so that these two hinge joints can define the aforesaid junction assembly 155.

[0075] As illustrated in detail in Figure 6, each hinge joint can comprise, for example, a fork 185, a plate 190 inserted into the fork 185, and a transverse pin 195, having an axis coincident with the hinge axis A, which is adapted to be inserted into mutually coaxial holes obtained in the fork 185 and the plate 190.

[0076] In the example shown, the fork 185 is rigidly fixed to the second end 130 of the spar 115, and is therefore part of the first frame 105, while the plate 190 is rigidly fixed to the first end 170 of the spar 160, and is therefore part of the second frame 110.

[0077] However, it is not excluded that, in other embodiments, the fork 185 can be rigidly fixed to the first end 170 of the upright 160 while the plate 190 can be rigidly fixed to the second end 130 of the spar 115.

[0078] The transverse pin 195 can be common to both hinge joints, extending into the space comprised between the pair of uprights 160 and the pair of spars 115.

[0079] The rotation locking means can comprise, for each hinge joint, a plurality of holes 200 obtained in the fork 185 in an eccentric position with respect to the hinge axis A, a hole (not shown) obtained in the plate 190 and adapted to be aligned with each of the holes 200 for different angular positions of the second frame 110 with respect to the first frame 105, and at least one pin (also not shown) having an axis parallel to the hinge axis A and adapted to be coaxially inserted, in the manner of a latch, in the hole of the plate 190 and in the hole 200 aligned therewith.

[0080] Preferably, the second frame 110 can be of the extendable and retractable type, i.e. it can be capable of extending and contracting along a predetermined elongation direction B by varying its length.

[0081] For example, the elongation direction B can be parallel to the uprights 160 so as to allow a variation of the distance between the first ends 170 and the second ends 175 thereof. For this purpose, the second frame 110 can be shaped as an extensible (or telescopic) ladder, viz., comprising two ladder portions mutually slidable in the longitudinal direction. For example, as better illustrated in detail in Figure 8, each upright 160 can be formed by at least two bars, of which a first bar 160' defining the first end 170 and a second bar 160" defining the second end 175.

[0082] These first and second bars 160' and 160" are oriented parallel and are coupled to each other, e.g. by means of suitable guide and junction elements 205, so that they can mutually slide in a direction parallel to their longitudinal extension (e.g. telescopically).

[0083] The first and second bars 160' and 160" of each upright 160 can be individually connected to the first and second bars 160' and 160" of the other upright 160 by one or more of the cross-pieces 165, respectively, to form the two portions of the ladder.

[0084] The cross-pieces 165 associated with the first bars 160' can also be at least slightly misaligned, along the elongation direction B, with respect to the cross-pieces 165 associated with the second bars 160", so as not to hinder the elongation and shortening of the second frame 110.

[0085] Preferably, the support structure 100 further comprises locking means for selectively preventing (blocking) the extensibility of the second frame 110 along the elongation direction B (in both directions), for example after reaching the desired length.

[0086] In particular, these locking means can be adapted to lock the second frame 110 in a plurality of different predetermined lengths, for example in two or three predetermined lengths.

[0087] The locking means can for example comprise, for each upright 160, a plurality of transverse holes 210 obtained in the second bar 160" in different positions along the longitudinal extension thereof, for example coaxially with the relative cross-pieces 165 (which can be internally hollow), a hole 215 obtained in the first bar 160' and adapted to align with each of the transverse holes 210, for different axial positions of the second bar 160' with respect to the first bar 160', and at least one pin 220 having its axis perpendicular to the elongation direction B and adapted to be coaxially inserted, as a latch, in the hole 215 of the first bar 160' and in the transverse hole 210 aligned therewith of the second bar 160".

[0088] The pin 220, which can have an axis parallel to the hinge axis A, can be common to both uprights 160, extending into the space comprised therebetween.

[0089] The support structure 100 further comprises a platform 225, which is connected to the second frame 110 so as to be adapted to assume, when the second frame 110 is substantially vertically oriented and facing the wall P of the building E, a substantially horizontal orientation and a lower height with respect to the roofing surface T.

[0090] For example, the platform 225 can be adapted to assume an orientation substantially perpendicular to the plane in which the uprights of the second frame 110 lie.

[0091] This platform 225, which preferably protrudes from the second frame 110 towards the wall P of the building E, is useful for accommodating and supporting an operator, e.g. standing or seated, so that he can comfortably perform his activities.

[0092] The platform 225 can be formed by one or more box-shaped sheet metal bodies, possibly joined and / or stiffened by means of a frame made of bars and / or plates, e.g. metal.

[0093] In particular, the platform 225 can e connected at a portion of the second frame 110 that is distal with respect to the first frame 105, for example it can be connected at the second ends 175 of the uprights 160.

[0094] Thereby, in the preferred case wherein the second frame 110 is of the extendable and retractable type, the variation of its length along the elongation direction B advantageously also allows to vary the height of the platform 225 at the same time.

[0095] Preferably, the platform 225 can be connected to the second frame 110 by means of a junction assembly, globally indicated 230, which is adapted to allow a rotation of the platform 225 with respect to the second frame 110 around a predetermined hinge axis C.

[0096] This hinge axis C is chosen so that, when the first frame 105 is resting on the roofing surface T (e.g. according to the manners outlined above), it can assume a substantially horizontal orientation.

[0097] For example, the hinge axis C can be perpendicular to the uprights 160 of the second frame 110 (or parallel to the hinge axis A between the first frame 105 and the second frame 110) and can possible be placed at the second ends 175 thereof.

[0098] The junction assembly 230 can thus comprise two hinge joints, each of which is adapted to connect the second end 175 of a respective upright 160 with the platform 225.

[0099] As better illustrated in Figure 8, each hinge joint can for example comprise a pin 235, having an axis coincident with the hinge axis C, which is adapted to coaxially and simultaneously thread into two aligned holes, of which a first hole obtained in the respective upright 160 and a second hole obtained in a connecting bracket 245 integral with the platform 225.

[0100] The pin 235 can be common to both hinge joints, extending into the space comprised between the two uprights 160, for example by threading into one of the cross-pieces 165 (which can be internally hollow).

[0101] Thanks to this degree of freedom, the platform 225 can be tipped (folded) onto the second frame 110, e.g. to reduce the size thereof during transport and installation.

[0102] Preferably, the support structure 100 further comprises suitable locking means for selectively preventing (blocking) the mutual rotation of the platform 225 and the second frame 110 around said hinge axis C (in both directions).

[0103] In particular, these locking means can be adapted to lock the platform 225 and the second frame 110 at least in the angular position of use illustrated and outlined above, viz., for example that in which the platform 225 is orthogonal to the lying plane of the uprights 160.

[0104] These locking means can comprise, for each upright 160, at least one transverse hole (not shown) obtained in the upright 160 itself at a distance from the hinge axis C, for example coaxially with another cross-piece 165, a hole 250 obtained in the respective connecting bracket 245 and adapted to be aligned with said transverse hole, when the platform 225 and the second frame 110 are in the working orientation, and at least one pin (not shown) having an axis parallel to the hinge axis C and adapted to be coaxially inserted, as a latch, into the hole 250 of the connecting bracket 245 and into the transverse hole aligned therewith of the upright 160.

[0105] This pin can also be common to both uprights 160, extending into the space comprised therebetween, and can pass inside the cross-piece 165 (internally hollow).

[0106] Finally, the support structure 100 comprises a stabilising element 260, which is connected to the second frame 110 and is adapted, when the second frame 110 is oriented substantially vertically and facing the wall P of the building E, to be placed in contact with the wall P itself.

[0107] Thereby, it is advantageously possible to prevent the second frame 110, and therewith the platform 225, from oscillating excessively as a result of wind or other stresses, even though they are suspended from the roofing surface T by means of the first frame 105. In fact, by placing the stabilising element 260 in contact with the wall P of the building E, the support structure 100 is much more stable.

[0108] Since the distance between the perimeter of the roofing surface T and the vertical wall P is not always constant, the stabilising element 260 is preferably connected to the second frame by means of a sliding assembly, indicated overall with 265, which is adapted to allow mutual movements between the second frame 110 and the stabilising element 260 along a predetermined translation direction D.

[0109] This translation direction D can be chosen so that, when the second frame 110 is oriented substantially vertically and facing the wall P of the building E, it is adapted to assume a substantially horizontal orientation.

[0110] As better illustrated in Figure 7, the stabilising element 260 can comprise a bar 270 which, when the second frame 110 is substantially vertically oriented and faces the wall P of the building E, is adapted to assume a substantially horizontal orientation substantially parallel to the wall P itself.

[0111] For example, the bar 270 can be oriented perpendicular to the uprights 160 of the second frame 110 and / or perpendicular to the translation direction D.

[0112] This bar 270 can be longer than the distance separating the pair of uprights 160, e.g. equal to or greater than twice such a distance, so as to protrude from both sides of the pair, increasing the stability in contact with the wall P.

[0113] By means of the sliding assembly 265, the stabilising element 260 can be slidably coupled to the platform 225.

[0114] For example, the sliding assembly 265 can comprise a support rod 275, oriented parallel to the translation direction D, which is fixed cantilevered to the centreline of the bar 270, and one or more guide seats 280, obtained in the platform 225, within which the aforesaid support rod 275 is threaded and can slide axially.

[0115] Preferably, the support structure 100 can further comprise locking means for selectively preventing the mutual displacement (in both directions) between the stabilising element 260 and the second frame 110, for example between the stabilising element 260 and the platform 225, along said translation direction D, for example after having reached the most appropriate mutual distance to reach the wall P.

[0116] In particular, these locking means can be adapted to lock the stabilising element 260 and the second frame 110, in this case the stabilising element 260 and the platform 225, in a plurality of different predetermined mutual positions, to which different mutual distances along the translation direction D correspond.

[0117] For example, the locking means can comprise a first hole 285 obtained in a bracket integral with the platform 225, a plurality of second holes 290 obtained in the support rod 275 and arranged in succession along the longitudinal extension thereof, each of which is adapted to coaxially arrange itself with the first hole 285 for different positions of the bar 270 along the translation direction D, and a transverse pin (not shown), oriented perpendicularly to the translation direction D, and adapted to coaxially insert itself, as a latch, into the first hole 285 and into the second hole 290 aligned therewith.

[0118] The operation of the support structure 100 described above is evident from what has already been said, but can nevertheless be briefly summarised as explained below.

[0119] After having arranged the first frame 105 and the second frame 110 in the appropriate inclination and after having adjusted the length of the second frame 110, the first frame 105 can be placed rested and secured on the roofing surface T, so that the second frame 110 is substantially vertical and facing the wall P of the building E, and so that the platform 225 is substantially horizontal and projecting towards the wall P itself.

[0120] The stabilising element 260 can then be slid with respect to the second frame 110 along the translation direction D, until it contacts the wall P, so as to reduce oscillations and thus make the entire support structure 100 more stable.

[0121] Arranged in this way, the support structure 100 can be used by an operator who, after having put on the necessary protective equipment and having tied himself to the safety ropes envisaged by the regulations, can descend and ascend between the roofing surface T and the platform 225, taking advantage of the ladder-like conformation of the second frame 110, as well as any handles 295 that may be provided on the first frame 105. When on the platform 225, e.g. standing thereon, the operator can comfortably carry out his activities, e.g. building and / or plant engineering (e.g. grouting, plastering, painting, installation of electrical cables, telecommunication networks, refrigeration systems, etc.), on the wall P of building E, even in the areas immediately below the roofing surface T. After use, the support structure 100 can be removed from the roofing surface T and can be folded so as to assume a space-saving configuration in which it can be more easily and conveniently transported and / or stowed.

[0122] To achieve this configuration, it is envisaged that the stabilising element 260 and the bearing element 135, if any, can be disassembled and separated from the platform 225 and the first frame 105, respectively, as shown for example in Figure 13.

[0123] It is also envisaged that the second frame 110 can be brought into the minimum extension configuration.

[0124] Subsequently, as shown for example in Figure 14, the first frame 105 can be tilted onto the second frame 110, making them rotate with respect to each other around the hinge axis A, until they are arranged substantially parallel and overlapping.

[0125] Similarly, it is also possible to tilt the platform 225 onto the second frame 110, preferably arranging it parallel, on the same side and alongside the first frame 105, making them rotate with respect to each other around the hinge axis C, as shown for example in Figure 15.

[0126] Obviously, when necessary, the support structure 100 can be returned to the working configuration described above, simply by performing the steps described above in reverse order.

[0127] In some embodiments, an example of which is shown in Figures 9-12, the support structure 100 can be of the sliding type.

[0128] Such a support structure 100, for which everything that has already been described applies in any case, can further comprise a guide rail 300, which is adapted to be fixed on the roofing surface T of the building E, so that it is oriented horizontally,

[0129] The fixing of the guide rail 300 can occur by means of any suitable system, as long as it guarantees a stable and secure anchoring.

[0130] The first frame 105 can be slidably coupled to this guide rail 300, so that the frame can slide along the longitudinal (horizontal) direction of the guide rail 300 itself.

[0131] For example, the first frame 105 can be provided with one or more sliding blocks 305, each of which is slidably coupled to the guide rail 300 to slide longitudinally thereon.

[0132] Preferably, the coupling between each sliding block 305 and the guide rail 300 is such that relative displacements (e.g. detachments) in the direction which is transverse with respect to the longitudinal direction are prevented

[0133] Each sliding block 305 can be fixed to a respective spar 115, for example at the first end 125 thereof.

[0134] At the same time, the bearing element 135 can comprise one or more wheels 310, e.g. installed on the bar 140, which are adapted to roll in contact with the roofing surface T. Similarly, the stabilising element 260 can comprise one or more wheels 315, e.g. installed on the bar 270, which are adapted to roll in contact on the wall P.

[0135] Thanks to these expedients, the support structure 100 can be advantageously moved horizontally (like a carriage) along the perimeter of the roofing surface T, allowing operators to change work areas very easily and quickly without the need to entirely remove and reposition the support structure 100.

[0136] Of course, after its use, this variant of the support structure 100 can also be closed and reopened according to the same manners described above with reference to Figures 13 to 15.

[0137] In conclusion, it should be specified that in the present discussion, expressions such as "substantially horizontal" indicate an orientation that is perfectly horizontal or deviates from the horizontal orientation by no more than 30°, preferably by no more than 10°, e.g. by no more than 5°.

[0138] Similarly, expressions such as "substantially vertical" indicate an orientation that is perfectly vertical or deviates from the vertical orientation by no more than 30°, preferably by no more than 10°, e.g. by no more than 5°.

[0139] It should further be specified that a person skilled in the art may make several technical-applicative modifications to the above description, without departing from the scope of the invention as hereinafter claimed.

Examples

Embodiment Construction

[0046]With the aid of the above-mentioned figures, a support structure is described, referred to globally as 100, which is intended to act as a scaffold to facilitate and simplify manual work activities, e.g. construction or plant engineering, to be performed on the vertical walls of buildings, especially at the base of the roof.

[0047]The support structure 100 is generally of the suspended type, i.e. without directly resting on the ground.

[0048]The support structure 100 firstly comprises a first frame 105 adapted to be placed and stay resting on the roof or, more generally, on any roofing surface T of a building E. The roofing surface T of building E can be horizontal, e.g. in the case of a flat roof, or sloping, e.g. in the case of a pitched roof.

[0049]The first frame 105 is preferably adapted to stay resting on the roofing surface T, so that a portion thereof protrudes outside the perimeter of the latter, for example outside the eaves line, i.e. outside that lower horizontal perim...

Technical Field

[0001] The present invention relates to a support structure adapted to act as a scaffold to facilitate and simplify manual work activities, e.g., of a construction or plant engineering nature, which must be carried out at heights on building façades, especially at the base of the roof.State of the art

[0002] As is known, the execution of construction and / or installation activities on building façades, such as grouting, plastering, painting, installation of electrical cables, telecommunication networks, refrigeration systems, and much more, requires that the assigned operators be able to reach the height corresponding to the area to be treated.

[0003] This can be achieved starting from the ground, e.g. by setting up high scaffolding close to the fagade or by using lifting devices, the high cost of which, however, is not always compatible with the scale of the work to be performed.

[0004] Alternatively, operators are known to descend down from the roof, for example using safety harnesses that are hung, e.g. by means of a rope system, from special anchoring points set up on the roofing surface.

[0005] However, working while hanging from a rope system is not always easy for operators and, especially when the activity lasts for a long time, can also become very uncomfortable and tiring.

[0006] Another drawback of this solution is that, starting from the anchoring point, the ropes first extend along the roofing surface up to the eaves and then, flexing around the eaves, they orient themselves vertically to support the operator in front of the façade.

[0007] This passage around the eaves causes the ropes to locally exert a rather intense concentrated pressure on the eaves, proportional to the weight of the operator, which can sometimes damage the structural elements placed at the eaves themselves, such as rainwater collection channels.

[0008] To overcome this drawback, self-supporting brackets have been proposed to be applied at the eaves, with the function of supporting and deflecting the ropes with respect to their natural positioning, specifically, so as to keep them away from the eaves.

[0009] However, these brackets do not solve the inconvenience of the discomfort and fatigue of having to work for a long time hanging from a harness.

[0010] Presently, the only available solution to this second drawback is to provide suspended support structures that, while being hung from the roof by means of ropes, make a platform available, on which operators (in any case equipped with harnesses and safety ropes) can sit or stand while performing their activities.

[0011] However, such support structures can be subject to non-negligible oscillations, e.g. due to wind, shifting loads or other stresses, which make it difficult to carry out activities and may cause damaging impacts against the building.Disclosure of the invention

[0012] An aim of the present invention is to solve or at least mitigate one or more of the aforementioned drawbacks of the prior art.

[0013] Another aim is that of achieving such an objective within the context of a simple, rational and relatively cost-effective solution.

[0014] These and other aims are reached by the characteristics of the invention as set forth in the independent claim 1. The dependent claims outline preferred and / or particularly advantageous aspects of the invention.

[0015] In particular, an embodiment of the invention provides a support structure, typically of a suspended type (i.e. without resting directly on the ground), for performing activities at height, comprising: a first frame adapted to be rested and secured on a roofing surface (roof) of a building, a second frame connected to the first frame and adapted to assume a substantially vertical orientation such that it faces a wall of the building, below the roofing surface, at least when the first frame is rested and secured on the roofing surface itself, a platform connected to the second frame and oriented substantially horizontally, at a lower height with respect to the roofing surface, at least when the second frame is oriented substantially vertically and facing the wall of the building, and a stabilising element connected to the second frame and adapted to be placed in contact with the wall of the building, at least when the second frame is oriented substantially vertically and facing that wall.

[0016] Thanks to the presence of the stabilising element in contact with the wall, which is added to the first frame rested and secured on the roofing surface, the support structure can be applied to the building in a much more stable and secure manner with respect to the known solutions.

[0017] As a result, the possibility of oscillations and impacts is reduced and, at the same time, a much firmer platform is made available, on which an operator (in any case equipped with a harness and safety ropes) can find a comfortable footing (standing or possibly sitting) while performing his or her tasks.

[0018] According to an aspect of the invention, the second frame can be connected to the first frame by means of a first junction assembly, which is adapted to allow a mutual rotation of the first frame and the second frame around a first hinge axis oriented so as to be substantially horizontal, at least when the first frame is rested and secured on the roofing surface.

[0019] Thereby, the support structure can be advantageously adapted to both flat and pitched roofs with different pitches.

[0020] To lock the support structure in the most appropriate configuration, it can also comprise first locking means to selectively prevent the mutual rotation (preferably in both directions) of the first and second frames around said first hinge axis.

[0021] According to another aspect of the invention, the platform can be connected to the second frame by means of a second junction assembly, which is adapted to allow a mutual rotation of the platform and the second frame around a second hinge axis (also) oriented so as to be substantially horizontal, at least when the first frame is rested and secured on the roofing surface.

[0022] Thereby, the platform can be folded / tilted onto the second frame, e.g. to reduce the space required for the support structure during transport and installation.

[0023] To lock the platform at least in the working configuration, the support structure can comprise second locking means to selectively prevent the mutual rotation of the platform and the second frame around said second hinge axis.

[0024] Another aspect of the invention is that the second frame can be extendable and retractable along a predetermined elongation direction, so as to vary the height of the platform, at least when the second frame is oriented substantially vertically and facing the wall of the building.

[0025] Thereby, it is advantageously possible to adjust, at least within certain limits, the working space available to the operators below the roofing surface of the building.

[0026] Also in this case, it is preferable that the support structure further comprises third locking means to selectively prevent the second frame from extending and shortening along said elongation direction, so as to lock the platform at the desired height.

[0027] According to another aspect of the invention, the stabilising element can be connected to the second frame by means of a sliding assembly adapted to allow mutual displacements of the stabilising element and the second frame along a predetermined translation direction, which is adapted to assume a substantially horizontal orientation, at least when the second frame is oriented substantially vertically and facing the wall of the building. Thanks to this solution, the distance between the second frame and the stabilising element can be adjusted so that the latter can be in contact with walls of different buildings. To lock the second frame and the stabilising element at the most appropriate mutual distance, the support structure can be equipped with fourth locking means adapted to selectively prevent the mutual displacement of the stabilising element and the second frame along the said translation direction.

[0028] A further aspect of the invention is that the stabilising element can be connected to the second frame by means of the platform, to which the stabilising element can be slidably coupled to be able to be moved along said translation direction.

[0029] This solution allows to make the support structure more compact overall.

[0030] According to a further aspect of the invention, the support structure can also comprise a bearing element connected to the first frame and adapted to stay in contact with the roofing surface, at least when the first frame is rested and secured on the roofing surface itself.

[0031] This bearing element has the advantage of further increasing the stability of the support structure.

[0032] A further aspect of the invention is that the support structure can comprise a guide rail adapted to be fixed horizontally on the roofing surface and to which the first frame is slidably coupled.

[0033] Thanks to this solution, the support structure becomes a sliding type and can be advantageously moved, e.g. along the edge of the roofing surface, without the need to disassemble and reassemble it.

[0034] For the same reason, it is also preferable that the stabilising element can in turn comprise one or more wheels adapted to roll in contact with the wall of the building.

[0035] Similarly, the bearing element (if present) can also comprise one or more wheels adapted to roll in contact with the roofing surface.

[0036] Going into more detailed aspects, the second frame can comprise at least: a pair of parallel and mutually spaced apart uprights, each of which can have a first end connected to the first frame and a second and opposite end connected to the platform, and a plurality of cross-pieces individually fixed to both said uprights and mutually spaced apart.

[0037] Thereby, the second frame assumes a ladder-like shape and can therefore be used to facilitate the operators' descent and ascent from the platform.

[0038] In particular, each upright of the second frame can comprise at least two parallel bars, slidingly coupled to each other so as to be adapted to mutually slide in a direction parallel to their longitudinal extension.

[0039] This aspect provides a rather simple and reliable solution for making an extendable and retractable second frame, which, as mentioned above, allows to adjust the platform height.

[0040] Furthermore, this solution allows the second frame to be given the conformation of an extendable (or telescopic) ladder, formed by two portions of the ladder slidably coupled to each other, so as to continue facilitating the ascent and descent of operators.

[0041] Again with a view to providing a constructively rather simple support structure, the first frame can in turn comprise at least one pair of parallel and mutually spaced apart spars, each of which has one end connected to a first end of a respective upright of the second frame and an opposite end to which a hook or anchoring eye may be attached.

[0042] If necessary, the first frame can further comprise one or more cross-pieces individually fixed to both said spars.

[0043] In this context, the stabilising element can comprise at least one bar oriented perpendicular to the uprights of the second frame and having a length greater than the distance therebetween.

[0044] Similarly, the bearing element can comprise at least one bar oriented perpendicular to the spars of the first frame and having a length greater than the distance therebetween, e.g. substantially equal to the length of the bar of the stabilising element.Brief description of the drawings

[0045] Further features and advantages of the invention will be more apparent after reading the following description provided by way of a non-limiting example, with the aid of the figures illustrated in the accompanying drawings. Figure 1 is a side view of a support structure according to an embodiment of the present invention shown installed. Figure 2 is a first axonometric view of the support structure shown in Figure 1. Figure 3 is a second axonometric view of the support structure shown in Figure 1. Figure 4 is a side view of the support structure shown in Figure 1. Figure 5 is a front view of the support structure shown in Figure 1. Figure 6 is a detail of Figure 2 shown on an enlarged scale. Figure 7 is another detail of Figure 2 shown on an enlarged scale. Figure 8 is a third detail of Figure 2 shown on an enlarged scale. Figure 9 is a side view of a support structure according to an alternative embodiment of the present invention shown installed. Figure 10 is a first axonometric view of the support structure shown in Figure 9. Figure 11 is a detail of Figure 10 shown on an enlarged scale. Figure 12 is another detail of Figure 10 shown on an enlarged scale. Figures 13 to 15 show axonometric views of the support structure in Figure 1 during as many steps of the method with which it can be folded. Detailed description

[0046] With the aid of the above-mentioned figures, a support structure is described, referred to globally as 100, which is intended to act as a scaffold to facilitate and simplify manual work activities, e.g. construction or plant engineering, to be performed on the vertical walls of buildings, especially at the base of the roof.

[0047] The support structure 100 is generally of the suspended type, i.e. without directly resting on the ground.

[0048] The support structure 100 firstly comprises a first frame 105 adapted to be placed and stay resting on the roof or, more generally, on any roofing surface T of a building E. The roofing surface T of building E can be horizontal, e.g. in the case of a flat roof, or sloping, e.g. in the case of a pitched roof.

[0049] The first frame 105 is preferably adapted to stay resting on the roofing surface T, so that a portion thereof protrudes outside the perimeter of the latter, for example outside the eaves line, i.e. outside that lower horizontal perimeter line of the roofing surface T along which the elements (e.g. channels) for collecting rainwater are normally applied.

[0050] As can be seen in Figure 2, the first frame 105 can comprise, for example, a pair of parallel, side-by-side and mutually spaced apart spars 115, which can be rigidly joined to each other by means of one or more connecting cross-pieces 120.

[0051] Each spar 115 comprises a first end 125 and a second opposite end 130, which can be individually aligned, in the transverse direction, with the first end 125 and the second end 130 of the other spar 115, respectively.

[0052] The first frame 105 can stay resting on the roofing surface T so that the lying plane of the two spars 115, i.e. the plane with respect to which the spars 115 are mutually coplanar, is substantially parallel to the roofing surface T.

[0053] If the roofing surface T is sloping, it may also be preferable for the spars 115 to be oriented parallel to the fall line.

[0054] It should be specified that "stay resting on" does not necessarily mean that the first frame 105 is adapted to stay in direct contact with the roofing surface T, but that at least part of its weight bears directly or indirectly on the roofing surface T.

[0055] For example, it is envisaged that the support structure 100 can comprise a bearing element 135, which is connected to the first frame 105, preferably fixed thereto, and is adapted to stay in direct contact with the roofing surface T.

[0056] Thereby, the bearing element 135 can be interposed between the roofing surface T and the first frame 105, which can thus remain spaced apart from the roofing surface T itself. Specifically, the bearing element 135 can comprise a bar 140, oriented perpendicularly and fixed to both spars 115, e.g. by means of respective connecting brackets, which can be adapted to stay in direct contact with the roofing surface T.

[0057] This bar 140 can be longer than the distance separating the pair of spars 115, e.g. equal to or greater than twice such a distance, so as to protrude from both sides of the pair, increasing the resting stability.

[0058] In addition to staying resting on the roofing surface T, it is preferable that the first frame 105 can be firmly secured thereto, e.g. to one or more anchoring points (not illustrated) with which the roofing surface T can be equipped.

[0059] Anchoring points of this type are, for example, those envisaged in EN 516 or EN 517 or EN 795 or CENT / TS 16415 or UNI 11578.

[0060] The first frame 105 cam thus comprise two hooks or anchoring eyelets 150, each of which can be fixed at the first end 125 of a respective spar 115 and can be secured to at least one respective hooking point, for example by means of ropes.

[0061] The support structure 100 further comprises a second frame 110, which is connected to the first frame 105, preferably at the portion of the first frame 105 intended to protrude with respect to the perimeter of the roofing surface T, for example at the second ends 130 of the spars 115.

[0062] In general, the second frame 110 is in any case connected to the first frame 105 so as to be adapted, when the first frame 105 is resting on the roofing surface T (e.g. according to the manners outlined above), of assuming a substantially vertical (and descending) orientation, in which it faces a wall P of the building E, below the roofing surface T.

[0063] In practice, the second frame 110 is connected to the first frame 105 so as to be able to assume, with respect to the latter, a generally inclined orientation (sharp), for example by forming therewith an angle approximately equal to the angle formed between the roofing surface T and the wall P.

[0064] Since the slope of the roofing surface T is not always the same, the second frame 110 can be connected to the first frame 105 by means of a junction assembly, globally indicated as 155, which allows a mutual rotation of the first frame 105 and the second frame 110 around a prefixed hinge axis A.

[0065] This hinge axis A is chosen so that, when the first frame 105 is resting on the roofing surface T (e.g. according to the manners outlined above), it can assume a substantially horizontal orientation.

[0066] For example, the hinge axis A can be perpendicular to the spars 115 of the first frame 105 and can possibly be placed at the second ends 130 thereof.

[0067] Thereby, the mutual inclination between the first frame 105 and the second frame 110 can be adjusted appropriately according to the inclination of the roofing surface T.

[0068] Preferably, the support structure 100 further comprises locking means for selectively preventing (blocking) the mutual rotation of the first frame 105 and the second frame 110 around said hinge axis A (in both directions), for example after reaching the inclination corresponding to the slope of the roofing surface T.

[0069] In particular, these locking means can be adapted to lock the first frame 105 and the second frame 110 in a plurality of different predetermined mutual inclinations, for example at right angles, and in one or more further different mutual inclinations approximating the inclinations of the most common roofing surfaces T.

[0070] Going into more detail, the second frame 110 can have a structure similar to that of a ladder.

[0071] For example, the second frame 110 can comprise a pair of parallel uprights 160, side-by-side and mutually spaced apart, and possibly one or more cross-pieces 165, individually fixed to both of these uprights 160, so as to rigidly join them together.

[0072] The cross-pieces 165, which can be oriented perpendicularly to the uprights 160, can be distributed in succession and mutually spaced apart along the longitudinal extension of the uprights 160 themselves, so as to define the steps of the ladder.

[0073] Each upright 160 comprises a first end 170 and a second opposite end 175, which can be individually aligned, in the transverse direction, with the first end 170 and the second end 175 of the other upright 160, respectively.

[0074] The first end 170 of each upright 160 can be connected to the second end 130 of a respective spar 115 of the first frame 105, preferably by means of a respective hinge joint, so that these two hinge joints can define the aforesaid junction assembly 155.

[0075] As illustrated in detail in Figure 6, each hinge joint can comprise, for example, a fork 185, a plate 190 inserted into the fork 185, and a transverse pin 195, having an axis coincident with the hinge axis A, which is adapted to be inserted into mutually coaxial holes obtained in the fork 185 and the plate 190.

[0076] In the example shown, the fork 185 is rigidly fixed to the second end 130 of the spar 115, and is therefore part of the first frame 105, while the plate 190 is rigidly fixed to the first end 170 of the spar 160, and is therefore part of the second frame 110.

[0077] However, it is not excluded that, in other embodiments, the fork 185 can be rigidly fixed to the first end 170 of the upright 160 while the plate 190 can be rigidly fixed to the second end 130 of the spar 115.

[0078] The transverse pin 195 can be common to both hinge joints, extending into the space comprised between the pair of uprights 160 and the pair of spars 115.

[0079] The rotation locking means can comprise, for each hinge joint, a plurality of holes 200 obtained in the fork 185 in an eccentric position with respect to the hinge axis A, a hole (not shown) obtained in the plate 190 and adapted to be aligned with each of the holes 200 for different angular positions of the second frame 110 with respect to the first frame 105, and at least one pin (also not shown) having an axis parallel to the hinge axis A and adapted to be coaxially inserted, in the manner of a latch, in the hole of the plate 190 and in the hole 200 aligned therewith.

[0080] Preferably, the second frame 110 can be of the extendable and retractable type, i.e. it can be capable of extending and contracting along a predetermined elongation direction B by varying its length.

[0081] For example, the elongation direction B can be parallel to the uprights 160 so as to allow a variation of the distance between the first ends 170 and the second ends 175 thereof. For this purpose, the second frame 110 can be shaped as an extensible (or telescopic) ladder, viz., comprising two ladder portions mutually slidable in the longitudinal direction. For example, as better illustrated in detail in Figure 8, each upright 160 can be formed by at least two bars, of which a first bar 160' defining the first end 170 and a second bar 160" defining the second end 175.

[0082] These first and second bars 160' and 160" are oriented parallel and are coupled to each other, e.g. by means of suitable guide and junction elements 205, so that they can mutually slide in a direction parallel to their longitudinal extension (e.g. telescopically).

[0083] The first and second bars 160' and 160" of each upright 160 can be individually connected to the first and second bars 160' and 160" of the other upright 160 by one or more of the cross-pieces 165, respectively, to form the two portions of the ladder.

[0084] The cross-pieces 165 associated with the first bars 160' can also be at least slightly misaligned, along the elongation direction B, with respect to the cross-pieces 165 associated with the second bars 160", so as not to hinder the elongation and shortening of the second frame 110.

[0085] Preferably, the support structure 100 further comprises locking means for selectively preventing (blocking) the extensibility of the second frame 110 along the elongation direction B (in both directions), for example after reaching the desired length.

[0086] In particular, these locking means can be adapted to lock the second frame 110 in a plurality of different predetermined lengths, for example in two or three predetermined lengths.

[0087] The locking means can for example comprise, for each upright 160, a plurality of transverse holes 210 obtained in the second bar 160" in different positions along the longitudinal extension thereof, for example coaxially with the relative cross-pieces 165 (which can be internally hollow), a hole 215 obtained in the first bar 160' and adapted to align with each of the transverse holes 210, for different axial positions of the second bar 160' with respect to the first bar 160', and at least one pin 220 having its axis perpendicular to the elongation direction B and adapted to be coaxially inserted, as a latch, in the hole 215 of the first bar 160' and in the transverse hole 210 aligned therewith of the second bar 160".

[0088] The pin 220, which can have an axis parallel to the hinge axis A, can be common to both uprights 160, extending into the space comprised therebetween.

[0089] The support structure 100 further comprises a platform 225, which is connected to the second frame 110 so as to be adapted to assume, when the second frame 110 is substantially vertically oriented and facing the wall P of the building E, a substantially horizontal orientation and a lower height with respect to the roofing surface T.

[0090] For example, the platform 225 can be adapted to assume an orientation substantially perpendicular to the plane in which the uprights of the second frame 110 lie.

[0091] This platform 225, which preferably protrudes from the second frame 110 towards the wall P of the building E, is useful for accommodating and supporting an operator, e.g. standing or seated, so that he can comfortably perform his activities.

[0092] The platform 225 can be formed by one or more box-shaped sheet metal bodies, possibly joined and / or stiffened by means of a frame made of bars and / or plates, e.g. metal.

[0093] In particular, the platform 225 can e connected at a portion of the second frame 110 that is distal with respect to the first frame 105, for example it can be connected at the second ends 175 of the uprights 160.

[0094] Thereby, in the preferred case wherein the second frame 110 is of the extendable and retractable type, the variation of its length along the elongation direction B advantageously also allows to vary the height of the platform 225 at the same time.

[0095] Preferably, the platform 225 can be connected to the second frame 110 by means of a junction assembly, globally indicated 230, which is adapted to allow a rotation of the platform 225 with respect to the second frame 110 around a predetermined hinge axis C.

[0096] This hinge axis C is chosen so that, when the first frame 105 is resting on the roofing surface T (e.g. according to the manners outlined above), it can assume a substantially horizontal orientation.

[0097] For example, the hinge axis C can be perpendicular to the uprights 160 of the second frame 110 (or parallel to the hinge axis A between the first frame 105 and the second frame 110) and can possible be placed at the second ends 175 thereof.

[0098] The junction assembly 230 can thus comprise two hinge joints, each of which is adapted to connect the second end 175 of a respective upright 160 with the platform 225.

[0099] As better illustrated in Figure 8, each hinge joint can for example comprise a pin 235, having an axis coincident with the hinge axis C, which is adapted to coaxially and simultaneously thread into two aligned holes, of which a first hole obtained in the respective upright 160 and a second hole obtained in a connecting bracket 245 integral with the platform 225.

[0100] The pin 235 can be common to both hinge joints, extending into the space comprised between the two uprights 160, for example by threading into one of the cross-pieces 165 (which can be internally hollow).

[0101] Thanks to this degree of freedom, the platform 225 can be tipped (folded) onto the second frame 110, e.g. to reduce the size thereof during transport and installation.

[0102] Preferably, the support structure 100 further comprises suitable locking means for selectively preventing (blocking) the mutual rotation of the platform 225 and the second frame 110 around said hinge axis C (in both directions).

[0103] In particular, these locking means can be adapted to lock the platform 225 and the second frame 110 at least in the angular position of use illustrated and outlined above, viz., for example that in which the platform 225 is orthogonal to the lying plane of the uprights 160.

[0104] These locking means can comprise, for each upright 160, at least one transverse hole (not shown) obtained in the upright 160 itself at a distance from the hinge axis C, for example coaxially with another cross-piece 165, a hole 250 obtained in the respective connecting bracket 245 and adapted to be aligned with said transverse hole, when the platform 225 and the second frame 110 are in the working orientation, and at least one pin (not shown) having an axis parallel to the hinge axis C and adapted to be coaxially inserted, as a latch, into the hole 250 of the connecting bracket 245 and into the transverse hole aligned therewith of the upright 160.

[0105] This pin can also be common to both uprights 160, extending into the space comprised therebetween, and can pass inside the cross-piece 165 (internally hollow).

[0106] Finally, the support structure 100 comprises a stabilising element 260, which is connected to the second frame 110 and is adapted, when the second frame 110 is oriented substantially vertically and facing the wall P of the building E, to be placed in contact with the wall P itself.

[0107] Thereby, it is advantageously possible to prevent the second frame 110, and therewith the platform 225, from oscillating excessively as a result of wind or other stresses, even though they are suspended from the roofing surface T by means of the first frame 105. In fact, by placing the stabilising element 260 in contact with the wall P of the building E, the support structure 100 is much more stable.

[0108] Since the distance between the perimeter of the roofing surface T and the vertical wall P is not always constant, the stabilising element 260 is preferably connected to the second frame by means of a sliding assembly, indicated overall with 265, which is adapted to allow mutual movements between the second frame 110 and the stabilising element 260 along a predetermined translation direction D.

[0109] This translation direction D can be chosen so that, when the second frame 110 is oriented substantially vertically and facing the wall P of the building E, it is adapted to assume a substantially horizontal orientation.

[0110] As better illustrated in Figure 7, the stabilising element 260 can comprise a bar 270 which, when the second frame 110 is substantially vertically oriented and faces the wall P of the building E, is adapted to assume a substantially horizontal orientation substantially parallel to the wall P itself.

[0111] For example, the bar 270 can be oriented perpendicular to the uprights 160 of the second frame 110 and / or perpendicular to the translation direction D.

[0112] This bar 270 can be longer than the distance separating the pair of uprights 160, e.g. equal to or greater than twice such a distance, so as to protrude from both sides of the pair, increasing the stability in contact with the wall P.

[0113] By means of the sliding assembly 265, the stabilising element 260 can be slidably coupled to the platform 225.

[0114] For example, the sliding assembly 265 can comprise a support rod 275, oriented parallel to the translation direction D, which is fixed cantilevered to the centreline of the bar 270, and one or more guide seats 280, obtained in the platform 225, within which the aforesaid support rod 275 is threaded and can slide axially.

[0115] Preferably, the support structure 100 can further comprise locking means for selectively preventing the mutual displacement (in both directions) between the stabilising element 260 and the second frame 110, for example between the stabilising element 260 and the platform 225, along said translation direction D, for example after having reached the most appropriate mutual distance to reach the wall P.

[0116] In particular, these locking means can be adapted to lock the stabilising element 260 and the second frame 110, in this case the stabilising element 260 and the platform 225, in a plurality of different predetermined mutual positions, to which different mutual distances along the translation direction D correspond.

[0117] For example, the locking means can comprise a first hole 285 obtained in a bracket integral with the platform 225, a plurality of second holes 290 obtained in the support rod 275 and arranged in succession along the longitudinal extension thereof, each of which is adapted to coaxially arrange itself with the first hole 285 for different positions of the bar 270 along the translation direction D, and a transverse pin (not shown), oriented perpendicularly to the translation direction D, and adapted to coaxially insert itself, as a latch, into the first hole 285 and into the second hole 290 aligned therewith.

[0118] The operation of the support structure 100 described above is evident from what has already been said, but can nevertheless be briefly summarised as explained below.

[0119] After having arranged the first frame 105 and the second frame 110 in the appropriate inclination and after having adjusted the length of the second frame 110, the first frame 105 can be placed rested and secured on the roofing surface T, so that the second frame 110 is substantially vertical and facing the wall P of the building E, and so that the platform 225 is substantially horizontal and projecting towards the wall P itself.

[0120] The stabilising element 260 can then be slid with respect to the second frame 110 along the translation direction D, until it contacts the wall P, so as to reduce oscillations and thus make the entire support structure 100 more stable.

[0121] Arranged in this way, the support structure 100 can be used by an operator who, after having put on the necessary protective equipment and having tied himself to the safety ropes envisaged by the regulations, can descend and ascend between the roofing surface T and the platform 225, taking advantage of the ladder-like conformation of the second frame 110, as well as any handles 295 that may be provided on the first frame 105. When on the platform 225, e.g. standing thereon, the operator can comfortably carry out his activities, e.g. building and / or plant engineering (e.g. grouting, plastering, painting, installation of electrical cables, telecommunication networks, refrigeration systems, etc.), on the wall P of building E, even in the areas immediately below the roofing surface T. After use, the support structure 100 can be removed from the roofing surface T and can be folded so as to assume a space-saving configuration in which it can be more easily and conveniently transported and / or stowed.

[0122] To achieve this configuration, it is envisaged that the stabilising element 260 and the bearing element 135, if any, can be disassembled and separated from the platform 225 and the first frame 105, respectively, as shown for example in Figure 13.

[0123] It is also envisaged that the second frame 110 can be brought into the minimum extension configuration.

[0124] Subsequently, as shown for example in Figure 14, the first frame 105 can be tilted onto the second frame 110, making them rotate with respect to each other around the hinge axis A, until they are arranged substantially parallel and overlapping.

[0125] Similarly, it is also possible to tilt the platform 225 onto the second frame 110, preferably arranging it parallel, on the same side and alongside the first frame 105, making them rotate with respect to each other around the hinge axis C, as shown for example in Figure 15.

[0126] Obviously, when necessary, the support structure 100 can be returned to the working configuration described above, simply by performing the steps described above in reverse order.

[0127] In some embodiments, an example of which is shown in Figures 9-12, the support structure 100 can be of the sliding type.

[0128] Such a support structure 100, for which everything that has already been described applies in any case, can further comprise a guide rail 300, which is adapted to be fixed on the roofing surface T of the building E, so that it is oriented horizontally,

[0129] The fixing of the guide rail 300 can occur by means of any suitable system, as long as it guarantees a stable and secure anchoring.

[0130] The first frame 105 can be slidably coupled to this guide rail 300, so that the frame can slide along the longitudinal (horizontal) direction of the guide rail 300 itself.

[0131] For example, the first frame 105 can be provided with one or more sliding blocks 305, each of which is slidably coupled to the guide rail 300 to slide longitudinally thereon.

[0132] Preferably, the coupling between each sliding block 305 and the guide rail 300 is such that relative displacements (e.g. detachments) in the direction which is transverse with respect to the longitudinal direction are prevented

[0133] Each sliding block 305 can be fixed to a respective spar 115, for example at the first end 125 thereof.

[0134] At the same time, the bearing element 135 can comprise one or more wheels 310, e.g. installed on the bar 140, which are adapted to roll in contact with the roofing surface T. Similarly, the stabilising element 260 can comprise one or more wheels 315, e.g. installed on the bar 270, which are adapted to roll in contact on the wall P.

[0135] Thanks to these expedients, the support structure 100 can be advantageously moved horizontally (like a carriage) along the perimeter of the roofing surface T, allowing operators to change work areas very easily and quickly without the need to entirely remove and reposition the support structure 100.

[0136] Of course, after its use, this variant of the support structure 100 can also be closed and reopened according to the same manners described above with reference to Figures 13 to 15.

[0137] In conclusion, it should be specified that in the present discussion, expressions such as "substantially horizontal" indicate an orientation that is perfectly horizontal or deviates from the horizontal orientation by no more than 30°, preferably by no more than 10°, e.g. by no more than 5°.

[0138] Similarly, expressions such as "substantially vertical" indicate an orientation that is perfectly vertical or deviates from the vertical orientation by no more than 30°, preferably by no more than 10°, e.g. by no more than 5°.

[0139] It should further be specified that a person skilled in the art may make several technical-applicative modifications to the above description, without departing from the scope of the invention as hereinafter claimed.

Examples

Embodiment Construction

[0046]With the aid of the above-mentioned figures, a support structure is described, referred to globally as 100, which is intended to act as a scaffold to facilitate and simplify manual work activities, e.g. construction or plant engineering, to be performed on the vertical walls of buildings, especially at the base of the roof.

[0047]The support structure 100 is generally of the suspended type, i.e. without directly resting on the ground.

[0048]The support structure 100 firstly comprises a first frame 105 adapted to be placed and stay resting on the roof or, more generally, on any roofing surface T of a building E. The roofing surface T of building E can be horizontal, e.g. in the case of a flat roof, or sloping, e.g. in the case of a pitched roof.

[0049]The first frame 105 is preferably adapted to stay resting on the roofing surface T, so that a portion thereof protrudes outside the perimeter of the latter, for example outside the eaves line, i.e. outside that lower horizontal perim...

Claims

1. A support structure (100) for performing activities at height, comprising: - a first frame (105) adapted to be rested and secured on a roofing surface (T) of a building (E), - a second frame (110) connected to the first frame (105) and adapted to assume a substantially vertical orientation such that it can face a wall (P) of the building (E), below the covering surface (T), at least when the first frame (105) is rested and secured on the roofing surface (T) itself, - a platform (225) connected to the second frame (110) and adapted to assume a substantially horizontal orientation, at a lower height with respect to the roofing surface (T), at least when the second frame (110) is oriented substantially vertically and facing the wall (P) of the building (E), and - a stabilising element (260) connected to the second frame (110) and adapted to be placed in contact with the wall (P) of the building (E), at least when the second frame (110) is oriented substantially vertically and facing said wall (P).

2. A support structure (100) according to claim 1, wherein the second frame (110) is connected to the first frame (105) by means of a first junction assembly (155), which is adapted to allow a mutual rotation of the first frame (105) and the second frame (110) around a first hinge axis (A) oriented so as to be substantially horizontal, at least when the first frame (105) is rested and secured on the roofing surface (T).

3. A support structure (100) according to claim 1 or 2, wherein the platform (225) is connected to the second frame (110) by means of a second junction assembly (230), which is adapted to allow a mutual rotation of the platform (225) and the second frame (110) around a second hinge axis (C) oriented so as to be substantially horizontal, at least when the first frame (105) is rested and secured on the roofing surface (T).

4. A support structure (100) according to any one of the preceding claims, wherein the second frame (110) is extendable and retractable along a predetermined elongation direction (B) so as to vary the height of the platform (225), at least when the second frame (110) is oriented substantially vertically and facing the wall (P) of the building (E).

5. A support structure (100) according to any one of the preceding claims, wherein the stabilising element (260) is connected to the second frame (110) by means of a sliding assembly (265) adapted to allow mutual displacements of the stabilising element (260) and the second frame (110) along a predetermined translation direction (D), which is adapted to assume a substantially horizontal orientation, at least when the second frame (110) is substantially vertically oriented and facing the wall (P) of the building (E).

6. A support structure (100) according to claim 5, wherein the stabilising element (260) is connected to the second frame (110) by means of the platform (225), to which the stabilising element (260) is slidably coupled for being able to be moved along said translation direction (D).

7. A support structure (100) according to any one of the preceding claims, comprising a bearing element (135) connected to the first frame (105) and adapted to stay in contact with the roofing surface (T), at least when the first frame (105) is rested and secured on the roofing surface (T) itself.

8. A support structure (100) according to any one of the preceding claims, comprising a guide rail (300) adapted to be fixed horizontally on the roofing surface (T) and to which the first frame (105) is slidably coupled, the stabilising element (260) being able to comprise one or more wheels (315) adapted to roll in contact with the wall (P) of the building (E), the possible bearing element being able to comprise one or more wheels (310) adapted to roll in contact with the roofing surface (T).

9. A support structure (100) according to any one of the preceding claims, wherein the second frame (110) comprises at least: - a pair of uprights (160) parallel and mutually spaced apart, and - a plurality of cross-pieces (165) individually fixed to both said uprights (160) and mutually spaced apart.

10. A support structure (100) according to claim 9, wherein each upright (160) of the second frame (110) comprises at least two parallel bars (160', 160") slidingly coupled to each other, so as to be adapted to mutually slide in a direction parallel to their longitudinal extension.

11. A support structure (100) according to claim 9 or 10, wherein the stabilising element (260) comprises at least one bar (270) oriented perpendicularly to the uprights (160) of the second frame (110) and having a length greater than the distance therebetween.

12. A support structure (100) according to any one of claims 9 to 11, wherein the first frame (105) comprises at least one pair of spars (115) which are parallel and mutually spaced apart, each of which has one end (130) connected to a first end (170) of a respective upright (160) of the second frame (110), and possibly one or more cross-pieces (120) individually fixed to both said spars (115).

13. A support structure (100) according to claims 7 and 12, wherein said support element (135) can comprise at least one bar (140) oriented perpendicularly to the spars (115) of the first frame (105) and having a length greater than the distance therebetween.

14. A support structure (100) according to claim 12 or 13, wherein an opposite end (125) of both spars (115) of the first frame (105) comprises a hook or an anchoring eyelet (150).

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