Weatherproof roof with support rib placed on the upper side of the stretched roof membrane

Description

[0001] The present invention is a weather protection roof with an upper web formed from web elements.

[0002] Weather protection roofs are known as temporary roofing for construction sites or events. These roofs consist of a truss structure comprising two or more parallel roof trusses connected by transverse purlins and diagonal braces to absorb shear forces acting in the longitudinal direction of the trusses. Each roof truss is usually a truss girder, often with a kink in the ridge area and at least two chords, a top chord and a bottom chord. One of the chords, usually the top chord, has laterally running keder rails for pulling in the edge keders from the roof skin elements clamped between adjacent roof trusses. These truss roof structures are supported at the desired height in the eaves area using scaffolding or other support.

[0003] In addition to the two-chord roof trusses, there are also weather protection roofs with three-chord roof trusses, in which the keder rails are not carried in front of the upper chord, but by a central chord running largely parallel to the upper and lower chords, so that the upper chords of the roof trusses run above the roof skin in the finished weather protection roof and protrude beyond it.

[0004] One problem that arises when using such weather protection roofs is that work often has to be carried out in the roof area. This can be assembly work for installing or dismantling the roof itself, or routine maintenance or cleaning work.

[0005] For this purpose, it is known to add a detachably attached walkway to the roof area, allowing access to the roof area for fitters or other workers. EP 2 984 255 B1, for example, proposes an assembly walkway that is suspended along a roof truss by means of a supporting structure. This creates a working platform that runs at the height of a roof truss or below it.

[0006] The disadvantage here is that, due to its side-hinged fastening, this mounting bridge necessarily runs beneath the roof cladding, preventing direct access to the top of the roof cladding. However, this would be highly desirable, for example, for cleaning or snow removal work, or for installation work on the weather protection roof itself with the roof cladding clamped in place.

[0007] US Patent No. 5,784,842 A shows a roof arrangement consisting of a plurality of truss roof connectors, each with an upper, lower, and middle chord, which hold a roof tarpaulin between them. This document discloses the features of the preamble of claim 1.

[0008] Utility model DE 91 10 828 U1 proposes an outer cover for scaffolding, which is constructed from individual chambers with a non-deformable outer skin. The chambers are releasably mounted on bearing rails that are secured to the scaffolding posts by means of couplings. The outer cover is not intended to be walkable.

[0009] The document ES 2 333 559 T3 presents a U-profile beam of a roof, hall, grandstand, staircase of a scaffold or podium.

[0010] International publication WO 2014 / 1832215 A1 discloses a suspended scaffold connector with a central spine comprising an anchor connector at an upper and a lower connecting piece for connecting a chord of a truss girder. One proposed use for this suspended scaffold connector is for constructing work platforms suspended below a ceiling or roof. For this purpose, several connectors are attached to the ceiling with anchors, the suspended connectors are connected by means of horizontally extending truss girders or stiles, and cover platforms are placed on top to create a continuous, walkable surface. Use above a roof to create access from above is not proposed.

[0011] The published patent application CA 2 508 598 A1 shows a scaffolding deck with a foldable fastening bracket on the underside.

[0012] The published British patent application GB 2 382 614 A proposes a working platform which can be attached to a window sill or a projection and which comprises platform panels placed on parallel round profiles, the platform panels being rectangular planks with support struts at both ends below and having a cross-section complementary to the round profiles.

[0013] The object underlying the present invention is to create a way of making weather protection roofs of the known type described easily accessible from the top, so that cleaning and assembly work can be carried out there even when the roof skin is clamped in place.

[0014] This object is achieved by a weather protection roof according to claim 1, which has an upper support web made of one or more web elements.

[0015] The support web of the weather protection roof according to the invention is a web with a walking area, which is detachably attached to the top of the weather protection roof by means of support and fastening means.

[0016] The walking area can be in the form of a rectangular plank defining a longitudinal direction, i.e., a wooden or metal board or grid that is significantly longer than it is wide, such as a decking used in scaffolding. It is also conceivable, however, to design the walking area as a platform that has no clear preferred direction, i.e., is approximately as wide as it is long. The shape of the walking area is largely arbitrary within the scope of the present invention; it could also be polygonal, oval, or round. However, the rectangular shape is preferred due to its simplified manufacturability and improved modularity.

[0017] The support bridge according to the invention can be constructed from several elements, each of which comprises its own walking area or walking area segment, for example, a plank, and its own support and fastening elements. Individual elements can then be positioned on the top side of the weather protection roof in such a way that they form a bridge of the desired size and shape.

[0018] A single web element is constructed in such a way that the walking area segment rests on or is attached to struts arranged underneath, running parallel to the roof cladding. The struts have the necessary fastening elements for secure hold. These can take the form of end sections of the struts that are bent downwards at a substantially right angle, or of retaining claws attached to the underside, for example, screwed or welded.

[0019] A frequently used, preferred construction of a web element provides a walking area in the form of an elongated plank, which is supported on one or two cross braces attached near the end(s) of the plank.

[0020] The support web of the weather protection roof according to the invention can run along a roof truss from the eaves to the middle of the roof, or in the case of a ridge roof, to the ridge. A web running from eave to eave along a roof truss can also be used. In the case of a ridge roof, either a special element with a bent running section is used, or two separate webs extending from the eaves and meeting at the ridge are used.

[0021] However, the inventive solution of placing the web or web elements on top of the roof makes it possible, in contrast to the solutions known in the prior art, to use webs that do not run parallel to one of the truss roof trusses, but rather at a non-zero angle to it. For example, the web elements can be placed running transversely to the roof trusses, for example along the eaves or along a ridge, or even between them. Diagonal runs are also conceivable in principle. Such web runs could not be realized with the mounting webs proposed in the prior art, which are suspended from the sides of the roof trusses by means of a supporting structure.

[0022] However, a significant advantage of the present invention is that the web is mounted above the roof skin, thus creating safe access for work there, be it cleaning or clearing work on or at the top of the roof skin, be it assembly work, on the weather protection roof itself or otherwise.

[0023] A further advantage over the known solutions is that the support web according to the invention can be installed at any time before or after the roof skin is pulled in, whereas in the prior art a specific sequence must be observed if the web elements are to be brought into position by means of a crane.

[0024] In the following, further advantageous embodiments of the present invention are presented, which can be combined with one another in a suitable manner, provided that they do not obviously exclude one another.

[0025] The support web of the weather roof according to the invention is preferably constructed from several elements which, when positioned together on the upper side of the roof, form the web with its desired course.

[0026] A frequently used, preferred construction of a web element provides a walking area in the form of an elongated plank, which is supported on one or two cross braces attached near the end(s) of the plank.

[0027] Alternatively, two equally long, parallel planks can be provided, spaced apart from one another and attached to one or more correspondingly extended cross braces. The length of the walkway planks is preferably selected such that it is an integer fraction of the distance from eaves to eaves or from eaves to ridge of the weather protection roof according to the invention. This allows the distance from eaves to ridge or from eaves to eaves to be completely overcome by a web made of similar elements, without leaving any significant gaps, for example, in the area of ​​the ridge between two adjoining partial webs or at the eaves between an access scaffold and the beginning of the support web.

[0028] The width of the web element, which is essentially determined by the length of the cross braces, corresponds to the distance between two adjacent roof trusses. This allows the web elements to be suspended from the top chord of the roof trusses at their connection points with the transverse purlins or diagonal braces, so that the web element fasteners are supported both on the top chord and on the purlins or diagonal braces running perpendicular to it. This ensures a stable, securely braced support for the web elements.

[0029] The fastening elements for suspension are attached or formed to the struts supporting the walking area, particularly the cross struts supporting the longitudinal plank. The fastening elements may consist of the end portion of the struts being bent at a substantially right angle. This has the advantage of being easy to manufacture, but may not allow for the dimensions and relative spacing of the fastening elements to be adapted to the specific conditions of the weather protection roof, particularly the fixed points preferably used for suspension, namely the connection points between the top chord of the roof trusses and purlins or diagonal struts.

[0030] Alternatively or additionally, retaining clips can be provided on the underside of the (cross) struts, for example by welding or screwing. These can also be cross-shaped, so that they enclose a suspension point in the form of a connection point between two struts on all sides, thus enabling securing or force transmission from the web to the truss structure in all directions of the tangential plane of the roof with just a single fastening element. For safety reasons, a railing can be provided along the edge of at least one side of the walking area. Safety is further improved by railings on both or all sides. For this purpose, the cross struts of the web elements according to the invention have pipe connectors, preferably in the form of hollow cylindrical connecting pieces attached on the top, i.e. pointing away from the roof skin.

[0031] The support web can be arranged so that it runs parallel to one or more roof trusses. Alternatively, it can also be installed perpendicular to them, for example, along an eave or a ridge. Several webs according to the invention can also be used, running parallel to each other or in different directions. The latter, in particular, allows for a high degree of freedom of movement when working on top of the weather protection roof according to the invention.

[0032] Further properties, features, and advantages of the present invention will become apparent from the exemplary embodiments explained in more detail below with reference to the figures. It should be noted that these serve only to illustrate the present invention and do not limit it in any way.

[0033] They show: Figure 1: A perspective view of a first embodiment of a support web element of the weather protection roof according to the invention. Figure 2: A perspective view of a second embodiment of a support web element of the weather protection roof according to the invention. Figure 3: A perspective view of a third embodiment of a support web element of the weather protection roof according to the invention. Figure 4: A plan view of a weather protection roof according to the invention with several support webs made of web elements according to all three embodiments.

[0034] In Figure 1 is a perspective view of a first embodiment of the invention of a support web element of the weather protection roof, which has fastening means in the form of essentially right-angled end regions of two cross struts.

[0035] Web element 2 consists of the gangplank 21, which is attached at its ends to the two cross struts 22. The cross struts 22 have end portions 220 bent at right angles as a means of attachment by hooking them onto the roof trusses and purlins or diagonal struts of the weather roof according to the invention.

[0036] Figure 2 shows a perspective view of a second embodiment of a support web element of the weather protection roof according to the invention from the bottom center, in which the fastening means are holding claws connected to the end regions of the cross struts.

[0037] The web element 2' according to the second embodiment largely corresponds to the first embodiment in its construction consisting of a plank 21, each of which is placed and fastened by its two ends onto a cross strut 22, but has U-shaped retaining claws 225 as fastening means at the location of bent end regions on the underside of the cross struts. The cross section of the cross struts is shown as rectangular here, but is largely arbitrary within the scope of the present invention, as long as the cross strut can provide the necessary load-bearing capacity. Cylindrical pipe connectors 24 are placed or formed onto the upper side of the cross struts in the area of ​​the corners of one side of the plank 21, into which the struts of a railing can be inserted. The stiffening means 241 are provided to increase the flexural rigidity of the connection between the pipe connectors 24 and the cross struts 22.They are arranged in pairs on diametrically opposite sides of the cylindrical pipe connector and are preferably oriented, as shown here, along the longitudinal axis of the cross brace 22, since the greatest forces that are not otherwise diverted into the web and thus into the weather protection roof occur in this (transverse) direction. This makes a railing attached to the pipe connector ideal as an anchor point or anchor structure for personal safety equipment (PPE) for workers on the web. The stiffening means 241 can be designed, as shown here, as stiffening triangles connected to the catheti on the pipe connector or the cross brace, respectively. Alternatively, a design as rod-shaped struts would also be conceivable.

[0038] Figure 3shows a perspective view of a third embodiment of the invention of a support web element of the weather protection roof, which is designed as a double element with extended cross struts and two parallel planks attached thereto.

[0039] The web element 2" of the third embodiment differs from that of the second by having extended cross braces 22 and an additional plank 21, which is mounted parallel to the first and spaced from the latter on the cross braces 22. As in the second embodiment, underside retaining claws 229 serve for fastening to the weather protection roof by hooking the claws to suitable fixed points, such as the purlins or the connection points between the purlins and the top chords of the roof trusses. In contrast to the second embodiment, however, the retaining claws here are L-shaped. This is sufficient because the wedging of the web element against displacement in the direction of the cross brace can be ensured jointly by both retaining claws, because the width of web element 2" corresponds to the distance between adjacent roof trusses.

[0040] The cross braces 22 of the web element 2" have pipe connectors 24 at both ends for connecting the posts of a railing 25. The connection between the pipe connectors 24 and the cross braces can be made by stiffening means, such as the one shown in Figure 2 shown struts 241, in order to prepare the railing for the safe connection of personal safety equipment of the persons on the support bridge.

[0041] In Figure 4 Finally, a section of a weather protection roof according to the invention with several superimposed webs made of elements from all three embodiments is shown in plan view. Weather protection roof 1 comprises several, five shown here, parallel, spaced-apart roof trusses 11, which are connected to form a truss structure via transverse purlins 13 and diagonal struts 14 that absorb shear forces.

[0042] On the top side of this construction shown in plan view, webs 2, 2' and 2" are made of web elements of the three designs from the Figures 1 - 3 hung up.

[0043] The elements of the second and third embodiments run along the roof trusses. The lengths of the gangways are each twice the distance between adjacent purlins. The width of the elements of web 2" made from elements of the third embodiment, which corresponds to the length of the crossbars there, corresponds to the distance between adjacent roof trusses 11, so that hanging on the top chords of adjacent roof trusses is possible. The support in the direction of the roof slope or in the direction of the webs is provided by the purlins 13, whose connection points with the top chords of the roof trusses 11 form the hanging points. The web elements according to the first embodiment with bent cross strut end areas as fastening means are combined to form a web 2 which runs perpendicular to the roof trusses 11, i.e. parallel to the purlins 13 and extends over two roof fields. Their length, orThe distance between the front and rear cross braces corresponds to the distance between adjacent roof trusses, i.e., the length of a roof field, so that suspension at the connection points between roof trusses 11 and purlins 13 is also possible. The individual web elements are thus wedged in the directions parallel to the purlins 13 and downwards along the roof slope. Although wedging in the upward direction of the roof is not present, the dead weight of the web elements provides sufficient security. List of reference symbols

[0044] 1 Weather protection roof 11 Roof truss 13 Purlin 14 Diagonal brace 2Support web (element) 21Walking area, plank 22Cross brace 220Fastener angled brace end 225Fastener U-shaped retaining claw 229Fastener L-shaped retaining claw 24Pipe connector 241Stiffening triangles 25Railing

Claims

1. A weather protection roof comprising a truss structure made of - several roof trusses (11), each with an upper chord, which span a - roof tarpaulin between them, and - are connected to one another via purlins (13) running transversely to the roof trusses (11) and diagonal struts (14), characterized in that the weather protection roof (1) is equipped with at least one detachably attached walkway for carrying out assembly or cleaning work on the roof and made of one or more walkway elements (2, 2', 2"), wherein the walkway is placed on the top of the roof tarpaulin, wherein each of the walkway elements (2, 2', 2") comprises • a walking area (21), and • a cross strut (22) arranged on the underside of the walking area (21), on which the walking area (21) rests or to which it is fastened, and which ∘ runs in a transverse direction which is substantially perpendicular to a longitudinal direction of the walking area (21), and ∘ has support and fastening means (220, 225, 229) protruding beyond a side facing away from the walking area for detachably fastening the walkway element (2, 2', 2") to the upper chords of the roof trusses (11), wherein a width of the walkway element (2"), which is essentially given by a length of the cross strut (22), corresponds to the distance between two adjacent roof trusses (11) of the weather protection roof (1).

2. The weather protection roof according to claim 1, characterized in that the walkway element (2, 2', 2") has means (25) suitable as attachment points for personal protective equipment of a person located on the walkway element (2, 2', 2"), the means (25) being in particular sufficiently rigidly connected to the walkway.

3. The weather protection roof according to claim 1 or 2, characterized in that the fastening means (220, 225, 229) of the walkway element (2, 2', 2") are - end sections (220) of the cross-struts (22) that are bent essentially at a right angle and / or - holding claws (225, 229) attached to the end sections of the cross-struts (22) by means of which the walkway element (2, 2', 2") can be hooked onto the upper chord of the roof trusses (11) and / or the purlins (13).

4. The weather protection roof according to one of claims 1 - 3, characterized in that the length of a roof truss (11) corresponds approximately to an integer multiple of the length of the plank (21) of a walkway element (2, 2', 2").

5. The weather protection roof according to one of claims 1 - 4, characterized in that the walkway element (2") has two parallel, spaced-apart longitudinal planks (21).

6. The weather protection roof according to one of claims 1 - 5, characterized in that it has a railing running longitudinally along at least one side of the plank (21).

7. The weather protection roof according to one of claims 1 - 6, characterized in that the cross struts (22) have pipe connectors (24) for connecting railing supports of a railing (25), in particular pipe connectors (24) in the form of hollow-cylindrical elements on the upper side of the cross strut (22) facing away from the roof.

8. The weather protection roof according to claim 7, characterized by stiffening means (241) which increase the bending stiffness of the connection between the pipe connectors (24) and the cross struts (22), in particular at least two stiffening triangles (241) or rod-shaped stiffening struts arranged on diametrically opposite sides of a pipe connector (24). The weather protection roof according to one of the preceding claims9. characterized in that the walkway runs essentially parallel to the roof trusses (11).

10. The weather protection roof according to one of claims 1 - 8, characterized in that the walkway runs essentially perpendicular to the roof trusses (11).

11. The weather protection roof of claim 9 characterized by a roof ridge, wherein on both sides of the roof ridge there is a walkway running from the roof ridge to the eaves.