Holding device for detachable fastening to a building roof

Description

Technical area

[0001] The invention relates to a holding device for releasably fastening to a building roof. State of the art

[0002] To carry out work on a structure, such as a building, it is typically common practice to use protective scaffolding. These scaffoldings are not intended for carrying out work on the structure from there, but rather to protect workers from falling and pedestrians from falling components. Such scaffoldings are usually designed as free-standing scaffolds, with one section standing on the ground.

[0003] However, the use of free-standing scaffolding has disadvantages in that, on the one hand, a relatively large and level floor area is required for the ground-based section of the scaffolding, and, on the other hand, the height from the ground to the area to be secured by the protective scaffolding must first be bridged. Especially when roof work is to be carried out on the structure or building, protecting workers and passersby with free-standing scaffolding is therefore complex.

[0004] Therefore, attempts have been made in the prior art to provide and use alternative protective scaffolding for such work.

[0005] GB 2 291 920 B describes a rail as a safety rail for a roof that can be mounted on a free edge of a structure, such as a parapet or floor in a multi-story building, eliminating the need to erect scaffolding from the floor to the roof. For this purpose, a plurality of clamps are attached to the free edge of the structure. The clamps comprise rods with two attachment posts that extend perpendicular to the rod on either side of the structure and are adjustable toward and away from the structure.

[0006] US 2003 042 072 A1 also describes safety rails that can be installed around roofs to prevent workers from falling to the ground. Depending on the requirements, the safety rails can be mounted either on a parapet or an overhanging eave roof perimeter. The safety rails are horizontal rails supported by a plurality of vertical supports, which in turn are attached to the roof by support brackets. The support brackets include a clamp having a substantially C-shaped frame with a first leg portion, a second leg portion, and a back portion connecting the first and second leg portions. In particular, the first leg portion is integrally formed with the back portion, and the second leg portion is configured for slidable adjustment.The support brackets also each have a support adapter in which the corresponding support can be accommodated. FR 2 217 975 A5 shows a device for attaching a safety railing. Two angle irons are designed as a clamping device, with one angle iron being fixed and the other angle iron being movable. The device comprises a threaded rod that can be moved, for example, via a removable crank, and allows the two angle irons to be brought closer together or separated. Nets can be attached to the insertable vertical post for safety.

[0007] EP 3 358 107 A1 discloses a formwork clamp that can accommodate a railing post. The formwork clamp comprises a spindle 7, which can be set in motion by at least one hand crank 9, each of which can be mounted at one or both ends of the spindle. The formwork clamp comprises two clamping jaws, with at least one of the clamping jaws engaging the spindle. The clamping jaws can be moved relative to each other by rotating the spindle.

[0008] EP 0 666 389 A1 shows a guardrail clamp with a lower abutment and an upper abutment that can be moved along a guide.

[0009] A rod-shaped railing section is attached to the abutment with railing brackets. The document also discloses a threaded spindle.

[0010] US Pat. No. 5,863,020 A discloses a device for protective purposes that can be attached, for example, to beams or railway tracks. The device can be attached to a railway track with a base portion. A threaded bolt can be rotated by a crank. Rotation of the threaded bolt causes a relative sliding movement between an outer and an inner elongated element of the device. Leg portions are arranged on each of the outer and inner elongated elements. The base portion can be clamped by appropriate rotation of the threaded bolt.

[0011] However, the existing protective scaffolding and fall protection systems are not suitable for safely preventing a worker from falling everywhere, i.e., at any position on the roof. In particular, the known devices and systems are only of limited use, if at all, on roofs with a sloping roof surface.

[0012] Based on this, a fall protection system would be desirable that can be used on roofs with sloping roof surfaces, such as mansard roofs, hip roofs, pyramid roofs, pent roofs and, in particular, gable roofs. Description of the invention

[0013] The invention is therefore based on the object of providing a holding device for releasably fastening to a building that eliminates the aforementioned problems and disadvantages of the prior art. In particular, the object of the present invention is to provide a holding device that can be safely used even on roofs with at least one sloping roof surface.

[0014] The solution to the problem is defined by the features of claim 1. According to the invention, the holding device for releasably fastening to a building roof, in particular in a region of a verge of the building roof, comprises a first clamping arm, a second clamping arm, and an elongated connecting web that connects the first clamping arm to the second clamping arm. The first clamping arm and / or the second clamping arm is movable along the connecting web in order to change a distance between the first clamping arm and the second clamping arm, into which a part of the building roof (10) can be clamped. The connecting web has a threaded spindle that engages with an internal thread of the first clamping arm and / or with an internal thread of the second clamping arm, wherein the first clamping arm and / or the second clamping arm can be moved along the connecting web by rotating the threaded spindle.The holding device has a support element which is designed to support a region of a fall protection device, wherein the support element comprises a coupling unit for releasably connecting the support element to the first clamping arm or the second clamping arm and a guide element which is designed to guide the support element during a movement along a first side of the connecting web.

[0015] The holding device according to the invention satisfactorily achieves this objective. In particular, it is possible to attach the holding device to the verge of a building's roof, i.e., in the area where the roof surface ends at the sides. Of course, the described holding device can also be advantageously used in other areas of the building's roof.

[0016] The first clamping arm and the second clamping arm are elongated and each protrude from the connecting web in the same direction. Each of the clamping arms has two main surfaces which are substantially at right angles to the longitudinal direction of the connecting web. The first and the second clamping arms preferably have the same length and / or width. The first and also the second clamping arms preferably protrude from the connecting web substantially at right angles thereto. However, it can also be provided that one or both of the clamping arms protrude from the connecting web at a different angle. In a preferred embodiment, it can also be provided that one of the clamping arms has an angle adjustment element with which the angle at which the respective clamping arm protrudes from the connecting web can be changed.This allows the holding device to be adapted to different situations when attached to a building roof.

[0017] The connecting bar is elongated. This means that its length is significantly greater than its width and / or thickness.

[0018] At least one of the clamping arms is designed as a movable clamping arm. The other clamping arm can also be designed as a movable clamping arm or as a fixed clamping arm. A fixed clamping arm offers the advantage that the complexity of the overall system is reduced, making it easier and more cost-effective to manufacture. In contrast, an additional movable clamping arm offers the advantage that a clamping movement of the two clamping arms relative to one another can be carried out from two directions. Depending on where the holding device is used, one of the two clamping arms may be difficult to access, so the option of clamping the holding device via the other clamping arm simplifies the use of the holding device. For this purpose, the clamping arms can have locking devices with which one of the clamping arms can be fixed at a position along the connecting web.

[0019] By moving the first clamping arm and / or the second clamping arm, the distance between the two holding arms can be changed. By reducing this distance, the holding device can be clamped to the building roof, particularly to the roof eaves, and thus removably secured. Accordingly, by increasing the distance, the holding device can be released from the building roof.

[0020] The movement of the first clamping arm and / or the second clamping arm occurs along a longitudinal axis of the connecting web.

[0021] The threaded spindle is preferably arranged within the connecting web and parallel to its longitudinal axis, particularly preferably centrally within the connecting web. Furthermore, the connecting web has at least one groove into which a retaining region of the clamping arms can be inserted. This allows the internal thread of the first clamping arm and / or the second clamping arm to engage with the threaded spindle. Furthermore, the clamping arms can be securely guided through the groove during a movement along the connecting web by the engagement of the connecting region with the groove. If one of the holding arms is a fixed clamping arm, it can be easily and flexibly fixed to the connecting web by means of the groove, for example by means of a screw and washers or the like.

[0022] If one or both clamping arms have a locking device, this is preferably designed in such a way that the clamping arm can be fixed in its respective position along the connecting web and its internal thread can be disengaged from the threaded spindle in one step.

[0023] The threaded spindle preferably has a single thread with a defined pitch direction (left-hand or right-hand thread). In one embodiment, however, the threaded spindle can also have two threads with different pitch directions, each extending essentially over half the length of the threaded spindle. This allows the two holding arms to be moved in opposite directions along the connecting web by rotating the threaded spindle. An advantage of the threaded spindle is its self-locking feature, so that the first and / or second clamping arms cannot be displaced, or can only be displaced with great difficulty, by external forces acting on them.

[0024] The holding device preferably has means by which the threaded spindle can be set in rotation, such as an externally actuated gear, a crank or the like.

[0025] Preferably, an elongated tensioning element is arranged on the first tensioning arm and / or the second tensioning arm. The tensioning element preferably extends orthogonally to the direction of extension of the connecting web. The tensioning element makes it possible to distribute the forces acting on the building roof when the holding device is fastened. In other words, due to its elongated contact surface with the building roof, the tensioning element transmits force to the building roof along this entire elongated contact surface. The force is thus applied to the roof in a distributed manner over a longer area, and in particular not in a small central area.

[0026] The extension direction is understood to be the direction in which the longest extension of the corresponding element occurs.

[0027] The clamping element is preferably connected, in particular detachably, to the first clamping arm and / or to the second clamping arm via a clamping element carrier. Alternatively, however, the clamping element can also be formed integrally (in one piece) with the first clamping arm and / or the second clamping arm. Alternatively, the clamping element carrier can be connected to the respective clamping arm directly (i.e., without any further intermediate element) or indirectly (i.e., with at least one further intermediate element). The connection itself can be detachable, non-detachable, or partially detachable. Examples of non-detachable connections are welded connections, examples of detachable connections are screw connections, and examples of partially detachable connections are riveted connections.

[0028] In this context, it is also conceivable that a clamping element is arranged not only on one clamping arm, but on both. The holding device according to the invention can therefore have two clamping elements in certain embodiments.

[0029] In a further preferred embodiment, the first and / or second clamping arm can have at least one clamping screw. The clamping screw can improve the attachment of the holding device to the building roof. In particular, the attachment to uneven surfaces, such as uneven tiles, can be improved.

[0030] The holding device preferably has at least one fastening means with which a fall protection device, such as a net, can be attached thereto, particularly detachably. The at least one fastening means can be designed, for example, as a hook, carabiner, eyelet, coupling, or the like. Of course, other elements can also be attached to the holding device, such as a cable pull, a construction site slide, a walkway, a scaffolding bracket, or the like.

[0031] Preferably, an adjustment device is arranged at each of the two ends of the connecting web, which is connected to the threaded spindle, so that the threaded spindle can be rotated by means of the adjustment devices. For example, the adjustment devices are designed as nuts.

[0032] The nuts allow the threaded spindle to be easily rotated using a wrench engaged with one of the nuts. Since a nut is located at both ends of the connecting bar, the threaded spindle can be rotated from the end of the connecting bar that is more easily accessible to a worker when attaching or removing the retaining device. This also allows the threaded spindle to be easily and safely rotated by a worker, regardless of the direction in which the connecting bar is attached to the building roof.This is particularly advantageous when the connecting bridge has to be attached to a building roof in such a way that it protrudes downwards from the building roof for the most part, as is the case, for example, with roof or facade work on buildings that are located close to a traffic route, in particular a railway line, since safety measures to protect the traffic route are prescribed for such work.

[0033] The nuts are preferably hexagon nuts whose dimensions correspond to one of the standards ISO 4032, ISO 4035, ISO 8673, ISO 8675 or DIN 6330. Alternatively, the nuts can also be supplied as square nuts, wing nuts, star grip nuts, knurled nuts, groove nuts or I <reuzlochmuttern ausgebildet sein. Vorzugsweise sind beide Muttern vom selben Typ und weisen dieselben Dimensionen auf, so dass eine Drehung der Gewindespindel von beiden Enden des Verbindungssteges aus mit demselben Werkzeug in Drehung versetzt werden kann. Die Muttern sind hierbei vorzugsweise an beiden Enden der Gewindespindel angeordnet.

[0034] The nuts are preferably firmly connected to the threaded spindle, e.g., by welding. Alternatively, the nuts can also be secured to the threaded spindle by means of a lock nut. Furthermore, it can also be provided that the nuts and the threaded spindle are formed as a single piece, i.e., that the threaded spindle is formed at both ends in the shape of the outer contour of a nut.

[0035] The connecting web preferably has a substantially rectangular cross-section. This means that the cross-section is essentially formed as a rectangle or square. The corners can also be rounded, in which case the cross-section of the connecting web is a rounded rectangle or rounded square. The connecting web thus has, in particular, four sides.

[0036] However, the connecting web can also have other cross-sections, such as a hexagonal cross-section or a polygonal cross-section.

[0037] The cross-section of the connecting web is preferably constant in terms of shape and dimensions over its entire length. In this case, the connecting web can be manufactured from a commercially available profile. However, in certain embodiments, at least one section of the connecting web can also have a cross-section with a different shape and / or different dimensions. For example, the areas at the ends of the connecting web can be designed differently than a central area between the end areas.

[0038] The connecting bar is preferably made of a metal or metal alloy, such as stainless steel or aluminum. Alternatively, the connecting bar can also be made of a polymer or fiber-reinforced polymer, such as a carbon fiber-reinforced polymer.

[0039] Preferably, the holding device has a support element which is designed to support a region of a fall protection device, wherein the support element comprises a coupling unit for releasably connecting the support element to the first tensioning arm or the second tensioning arm and a guide element which is designed to guide the support element during a movement along a first side of the connecting web.

[0040] Because the holding device can be attached to both the first and second tensioning arms, the holding device according to the invention offers a high degree of flexibility with regard to its attachment to the building roof. The holding device is preferably further configured such that it can be attached at least on both sides to the main surfaces of the first and / or second tensioning arms. This increases the flexibility of the holding device, since the fall protection device can be attached to the holding device either in the space between the first and second tensioning arms or facing away from this space.

[0041] On the one hand, the guide element enables the support element to be guided safely when the tensioning arm on which it is attached moves; on the other hand, the guide element stabilizes the support element relative to the connecting bar and thus prevents the support element and a fall protection device connected to it from wobbling or even bending when great force is exerted on the latter.

[0042] Preferably, the holding device has an elongate base body which cooperates with a first side surface of the connecting web, wherein the guide element comprises at least one projection which projects from the base body, so that the base body cooperates with at least a second side surface of the connecting web.

[0043] The at least one projection is preferably arranged on one of the longitudinal edges of the base body. In this embodiment, the base body therefore has essentially the shape of an L-profile in the region of the projection. The projection preferably extends over the entire length of the base body, in particular over the entire length of one of its longitudinal edges. In this case, the base body has essentially the shape of an L-profile over its entire length.

[0044] Particularly preferably, the guide element has a second projection, which is arranged in particular on a side edge of the base body that is opposite the side edge with the first projection. The second projection interacts with a third side surface of the connecting web. The first and second projections point away from the base body in the same direction. The base body and projections therefore essentially have the shape of a U-profile. The first and second projections are preferably located directly opposite one another. In certain embodiments, a plurality of first and second projections can also be provided, with a first projection and a second projection each facing one another.

[0045] Preferably, the base body is designed as a U-profile that interacts with three side surfaces of the connecting web. This means that the two projections extend along the entire length of the base body, along the opposite side edges of the base body. In this embodiment, the entire base body is thus in the shape of a U-profile. This embodiment ensures particularly good guidance of the support element along the connecting web. Furthermore, any wobbling of the support element relative to the connecting web, as well as any bending of the same, is effectively prevented.

[0046] The guide element preferably has a receptacle through which the connecting web can be passed. The receptacle is particularly shaped and dimensioned such that the connecting web can be guided through the receptacle with as little play as possible. This enables particularly wobble-free guidance of the support element along the connecting web and a substantially rigid arrangement of the two.

[0047] In one embodiment, the base body of the support element can have either at least one projection or a receptacle as a guide element. However, the base body particularly preferably has both at least one projection and a receptacle as a guide element.

[0048] Preferably, the coupling unit is arranged in the region of a first end of the base body, and the receptacle is arranged in the region of a second end of the base body. As a result, the base body of the holding device is connected to the connecting web at both ends, whereby the holding device is arranged on the connecting web in a particularly stable and wobble-free manner.

[0049] The base body of the support element preferably has a first arm which projects substantially at a right angle from the base body and is arranged in the region of a first end of the base body, wherein the coupling unit and a holder for the fall protection device are arranged on this first arm.

[0050] The first arm preferably protrudes from the base body on the side opposite the connecting web. The first arm is preferably in the form of a flat profile.

[0051] The holder for the fall protection device is preferably designed as a connecting piece that can be inserted into a tube of the fall protection device. The connecting piece preferably has a fastening element with which the fall protection device can be secured thereto, for example, a hole for a split pin. The fall protection device preferably has a scaffold structure, in particular made of tubes, to which, for example, an additional net can be attached.

[0052] Preferably, the coupling unit and the bracket are arranged offset relative to each other in the longitudinal direction of the first arm. This allows the fall protection device to be mounted on the support device at a distance from the connecting web and thus from the building roof, which is advantageous on certain construction sites. For example, the bracket can be designed as a connecting piece.

[0053] In a special embodiment, the bracket can also be arranged so that it can be moved along the first arm, for example, by means of a slide. This allows the fall protection device to be flexibly fixed at different distances from the connecting bridge or the building roof.

[0054] The base body preferably has a second arm which projects substantially at a right angle from the base body, is arranged in the region of the second end of the base body and is parallel to the first arm, the second arm having an opening which is concentric with the holder.

[0055] This allows the fall arrest device to be additionally attached to the second arm of the support element. For example, a tube of the fall arrest device can be passed through the opening before being coupled to the bracket. This allows for a particularly secure and wobble-free attachment of the fall arrest device to the support element.

[0056] Preferably, the coupling unit has a connecting piece that can be inserted into a receptacle of the first support arm or the second support arm. This allows for a particularly simple, reliable, and particularly kink-proof connection between the support element and the first or second support arm.

[0057] The first clamping arm and the second clamping arm preferably each further comprise the following: a clamping arm holder configured to connect the corresponding clamping arm to the connecting web; and a sliding holder slidably connected to the clamping arm holder; wherein the sliding holder has a guide which limits the movement of the sliding holder relative to the clamping arm holder to a substantially translational movement.

[0058] This allows the clamping arms to be moved relative to the connecting web, allowing the holding device to be flexibly attached to different building roofs.

[0059] The clamping arms preferably have a locking screw with which the sliding holder of a clamping arm can be fixed in a position relative to the respective clamping arm holder.

[0060] The locking screw is preferably arranged in such a way that it extends through the receptacle of the respective clamping arm, so that a nozzle inserted in the receptacle can also be fastened by means of the locking screw.

[0061] Further advantageous embodiments and combinations of features of the invention emerge from the following detailed description and the entirety of the patent claims. Short description of the drawings

[0062] The drawings used to explain the embodiment show: Fig. 1 schematically shows a building with a roof, to the verge of which two holding devices according to the invention are attached; Fig. 2 an embodiment of a holding device according to the invention; Fig. 3 a detailed view of the support element of the holding device of the Fig. 1 ; Fig. 4 a detailed view of the first clamping arm of the holding device according to Fig. 1; Fig. 5 a detailed view of the clamping arm holder according to Fig. 4 ; Fig. 6 a detailed view of the second adjustment device on the connecting web of the holding device according to Fig. 1 ; Fig. 7 a detailed view of the connecting web of the holding device according to Fig. 1 .

[0063] In principle, identical parts in the figures are provided with identical reference symbols. Ways to implement the invention

[0064] The Fig. 1 schematically shows a building 100 with a roof 101, which is designed as a gable roof, to whose verge 102 two holding devices 1.1, 1.2 according to the invention are attached. A fall protection device 50 in the form of a protective scaffold is connected to the two holding devices 1.1, 1.2.

[0065] On the Fig. 2An embodiment of a holding device 1 according to the invention is shown. The holding device 1 comprises a connecting web 4, on which a first support arm 2 and a second support arm 3 are arranged. In the embodiment shown, the first holding arm 2 is fixedly attached to the connecting web 4, while the second holding arm 3 is arranged movably along the connecting web 4. The movement of the second holding arm 3 is effected by rotating a threaded spindle (see Fig. 7 ) by means of two adjusting devices 7, 8 in the form of nuts, which are each arranged at one end of the connecting web 4 and are firmly connected to the threaded spindle. By moving the second holding arm 3 along the connecting web 4, a distance between the holding arms 2, 3 can be changed in order to releasably connect the holding device 1 to a building roof or to the verge of a building roof by clamping it (see Fig. 1 ).

[0066] The two support arms 2, 3 are essentially identical in design and each comprise a clamping arm holder 9, 10 to which a sliding holder 13, 14 is attached by means of a locking screw 15, 16. The sliding holders 13, 14 are shaped like an elongated U, with their longitudinal legs each having a guide 17, 18 into which the respective locking screw 15, 16 engages. The guides 17, 18 allow a linear, translational movement of the sliding holders 13, 14 relative to the clamping arm holders 9, 10. By tightening the respective locking screw 15, 16, a sliding holder 13, 14 can be clamped to the associated clamping arm holder 9, 10 in order to fix it in a position relative to the clamping arm holder 9, 10. At their end facing away from the connecting web 4, the sliding brackets 13, 14 each have a clamping screw 19, 20, with which an additional clamping force can be generated on a building roof or its verge located between the support arms 2, 3.By means of the clamping screws 19, 20, any height difference can be compensated, for example between the gable and the underside of the roof.

[0067] The clamping arm holders 9, 10 engage in a groove of the connecting web 4, wherein the second clamping arm holder 10, with which the second clamping arm 3 is fastened to the connecting web, is inserted via an internal thread (not shown) into a threaded spindle (see Fig. 7 ) which is arranged inside the connecting web 4. By rotating the threaded spindle using the nuts 7, 8, the second clamping arm can be moved along the connecting web in order to change the distance between the clamping arms 2, 3.

[0068] In the embodiment shown, a support element 30 is attached to the second clamping arm 3, to which a fall protection device (see Fig. 1) can be attached. The support element 30 has a base body 32, from which two arms 35, 36 protrude on the side facing away from the connecting web 4. The two arms 35, 36 are arranged at a distance from one another on the base body 31. The first arm 35 has a coupling unit 31 in the form of a connecting piece, which can be inserted into a receptacle 11, 12 of the first or second clamping arm 2, 3. In the embodiment shown, the receptacles 11, 12 are each located in the clamping arm holder 9, 10 of the respective clamping arm 2, 3 and are designed as a through-bore into which the connecting piece can be inserted. To secure the connecting piece in the respective receptacle 11, 12, this has a bore 38 through which the corresponding locking screw 15, 16 can be passed.Furthermore, a bracket 37 in the form of a connecting piece of the fall protection device is arranged on the first arm 35, which extends away from the first arm 35 on the side opposite the piece-shaped coupling unit 31. The connecting piece 37 can be inserted into a part of the fall protection device designed as a tube in order to connect it to the holding device 1. To secure the tube of the fall protection device, the bracket 37 has a bore 38 as a fastening element, into which, for example, a cotter pin or a screw can be inserted.

[0069] The base body 32 of the support element 30 has an elongated shape, with projections 33 extending over the entire length of the base body 32 on both sides of the longitudinal edges. This gives the base body the shape of a U-profile, into which the connecting web 4 can be fitted. The projections 33 serve as a linear guide, by means of which the support element 30 can be moved merely linearly along the connecting web 4. In addition, the support element has a receptacle 34 in the region of the second arm 36, through which the connecting web 4 can be passed essentially free of play. Both the projections 33 and the receptacle 34 act as guide elements, with which the support element 30 can be guided along the connecting web 4. The second arm 36 also has an opening 39, through which the tube of the fall protection device can be guided essentially free of play.This allows the fall protection device to be attached to the holding device 1 in a way that is as wobble- and kink-free as possible.

[0070] While the support element 30 is attached to the second clamping arm 3 in the embodiment shown, it can of course also be attached to the first clamping arm 2. It is also conceivable that not only the second clamping arm 3 is moved by rotating the threaded spindle, but also the first clamping arm 2. In this case, the threaded spindle is designed such that by rotating the threaded spindle in one direction, the clamping arms 2, 3 are each moved in opposite directions.

[0071] The Fig. 3 shows a detailed view of the support element 30 of the holding device according to Fig. 1The design of the base body 32 in the form of a U-profile is clearly visible, with the two projections 33.1, 33.2 being formed integrally with the base body 32. In the embodiment shown, the opening 39 is formed by the second arm 36 being extended rearward and encompassing the base body 32 and the projections 33.1, 33.2.

[0072] The Fig. 4 shows a detailed view of the first clamping arm 2 of the holding device according to Fig. 1 Also clearly visible in the figure is the first adjustment device 7 in the form of a nut with an external hexagon. The first nut 7 can therefore be easily turned using tools commonly found on a construction site, such as a hexagon socket wrench, to change the distance between the two clamping arms 2, 3.

[0073] On the Fig. 5 is a detailed view of the first receptacle 11 of the first clamping arm 2 according to the Fig. 4shown. It is clearly visible that the first receptacle 11 is designed as a through-hole and the first locking screw 15 extends through the entire diameter of this through-hole. As a result, the connecting piece 31 of the support element 30 can be secured in the first receptacle 11 by means of the locking screw 15. Because the first locking screw 15 and, in the essentially identical second arm 3, the second locking screw are used both to clamp the sliding holder 13, 14 and to secure the connecting piece 31, the attachment of the holding device 1 to a building roof is possible with fewer steps and the number of individual parts of the holding device 1 can be reduced.

[0074] The Fig. 6 shows a detailed view of the second adjusting device 8 in the form of a nut, which is mounted on the opposite end of the connecting web 4 of the holding device according to Fig. 1The second nut 8 also has the shape of an external hexagon, which has the same dimensions as the first nut 7. This allows the distance between the clamping arms 2, 3 to be changed using the same tool at both ends of the connecting web 4, which simplifies the flexibility when attaching the holding device to a building roof and also allows it to be attached in two orientations.

[0075] On the Fig. 7 is a detailed view of the connecting web 4 and in particular the groove 6 of the holding device according to Fig. 1As can be seen in the figure, the threaded spindle 5 is arranged inside the connecting web 4, which can be rotated by means of the nuts 7, 8 in order to change the distance between the clamping arms 2, 3. The clamping arm holders 9, 10 engage in the groove 6, so that these and the clamping arms 2, 3 attached to them are guided linearly along the connecting web 6. As shown in the Fig. 7 As can be seen, the groove 6 has an undercut, so that the clamping arm holders 9, 10 preferably have an area which has the shape of a sliding block which can engage in the groove 6.

Claims

1. Holding device (1) for reversible fastening to a building roof (101), in particular in a region of a gable (102) of the building roof (101), comprising: a) a first clamping arm (2); b) a second clamping arm (3); and c) an elongate connecting web (4), which connects the first clamping arm (2) to the second clamping arm (3), d) wherein the first clamping arm (2) and / or the second clamping arm (3) are configured to be moved along the connecting web (4) in order to change a distance between the first clamping arm (2) and the second clamping arm (3), into which a part of the building roof (101) is clampable; wherein the connecting web (4) comprises a threaded spindle (5), which is in engagement with an internal thread of the first clamping arm (2) and / or with an internal thread of the second clamping arm (3), wherein the first clamping arm (2) and / or the second clamping arm (3) are configured to be moved along the connecting web (4) by means of rotation of the threaded spindle (5), wherein the holding device (1) comprises a supporting element (30) which is configured to support a region of a fall protection device (50), characterized in that the supporting element (30) comprises a coupling unit (31) for the reversible connection of the supporting element (30) to the first clamping arm (2) or the second clamping arm (3), and a guide element (33; 33.1, 33.2; 39), which is configured to guide the supporting element (30) during a movement along a first side of the connecting web (4).

2. Holding device (1) according to claim 1, characterized in that an adjusting device (7, 8) is arranged at each of the two ends of the connecting web (4), said adjusting device is connected to the threaded spindle (5), so that the threaded spindle (5) is rotatable by means of the adjusting devices (7, 8).

3. Holding device (1) according to one of claims 1 or 2, characterized in that the connecting web (4) comprises a substantially rectangular cross-section.

4. Holding device (1) according to claim 1, characterized in that the supporting element (30) comprises an elongate base body (32) which interacts with a first side surface of the connecting web (4), wherein the guide element (33; 33.1, 33.2; 39) comprises at least one projection (33.1, 33.2), which projects from the base body (32), so that the base body (32) interacts with at least one second side surface of the connecting web (4).

5. Holding device (1) according to one of claims 1 or 4, characterized in that the base body (32) is configured as a U-profile, which interacts with three side surfaces of the connecting web (4).

6. Holding device (1) according to one of claims 1 to 5, characterized in that the guide element (33; 33.1, 33.2; 39) comprises a receptacle (34) through which the connecting web (4) is insertable.

7. Holding device (1) according to claim 6, characterized in that the coupling unit (31) is arranged in the region of a first end of the base body (32) and the receptacle is arranged in the region of a second end of the base body (32).

8. Holding device (1) according to one of claims 1 to 7, characterized in that the base body (32) of the supporting element (30) comprises a first arm (35) which projects substantially at a right angle from the base body (32) and is arranged in the region of a first end of the base body (32), wherein the coupling unit (31) and a holder (37) for the fall protection device (50) are arranged on this first arm (35).

9. Holding device (1) according to claim 8, characterized in that the coupling unit (31) and the holder (37) are arranged in an offset manner relative to each other in the longitudinal extension direction of the first arm (35).

10. Holding device (1) according to claim 7 and one of claims 8 or 9, characterized in that the base body (32) comprises a second arm (36), which projects substantially at a right angle from the base body (32), which is arranged in the region of the second end of the base body (32) and is parallel to the first arm (35), wherein the second arm (36) comprises an opening (39) which is concentric with the holder (37).

11. Holding device (1) according to one of claims 1 to 9, characterized in that the coupling unit (31) comprises a connecting piece, which is insertable into a receptacle (11, 12) of the first holding arm (2) or the second holding arm (3).

12. Holding device (1) according to one of claims 1 to 10, characterized in that the first clamping arm (2) and the second clamping arm (3) further respectively comprise the following: - a clamping arm holder (9, 10), which is configured to connect the corresponding clamping arm (2, 3) to the connecting web (4); and - a sliding holder (13, 14), which is slidably connected to the clamping arm holder (9, 10); wherein the sliding holder (13, 14) comprises a guide (17, 18), which limits the movement of the sliding holder (13, 14) relative to the clamping arm holder (9, 10) to a substantially translational movement.

13. Holding device (1) according to claim 11 or 12, characterized in that the clamping arms (2, 3) comprise a locking screw (15, 16) with which the sliding holder (13, 14) of a clamping arm (2, 3) is configured to be fixed in a position relative to the respective clamping arm holder (9, 10).

14. Holding device (1) according to claim 10 and 13, characterized in that the locking screw (15, 16) is arranged in such a way that it extends through the receptacle (11, 12) of the respective clamping arm (2, 3), so that a connecting piece (31) inserted into the receptacle (11, 12) is configured to be additionally fastened by means of the locking screw (15, 16).