Fall protection, roof safety system and use of a fall protection device

Abstract

Fall protection (20) for securing a work area (22), in particular on a roof (30), wherein the fall protection (20) has a movable, in particular mobile, frame (40) with a railing (80) for demarcating the work area (22) from a danger zone (24), wherein the fall protection (20) has a guide rail (60) for guiding the frame (40), wherein the frame (40) is operatively connected to the guide rail (60) and the frame (40) is guided by means of the guide rail (60), wherein the frame (40) is essentially movable in a horizontal direction of movement.

Description

[0001] The invention relates to a fall protection and a roof safety system as well as to the use of a fall protection for securing a work area, in particular on a roof.

[0002] It is known that technical systems such as air conditioning and ventilation systems, photovoltaic systems and thermal solar systems or lightning protection and antenna systems are located on flat roofs of buildings.

[0003] Such technical systems are operated, for example, on commercial properties, for example, but not exclusively, on office buildings, hotels, shops, warehouses, production facilities, sports halls or event halls.

[0004] For the installation and maintenance of technical systems, especially photovoltaic systems, on a roof, it is necessary for qualified personnel to access the roof area. For this purpose, maintenance routes must be secured, for example with fall protection devices. These devices protect all persons in the area at risk of falling as a collective protection system, for example as railings, or an individual protection system for an individual person. On the one hand, fall protection devices can prevent a fall, for example by means of a barrier, especially a railing. On the other hand, fall protection devices can catch people in the event of a fall, in particular by means of a rail or rope safety system in combination with personal protective equipment, such as a full body harness with an energy absorber. Personal protective equipment cannot generally be used without prior instruction and must be adapted to the respective user.

[0005] Collective protection systems, especially railings or edge protection systems, are partially visible on a building and influence its overall visual appearance. Furthermore, installed collective protection systems cast shadows on installed technical systems, such as photovoltaic or solar thermal systems.

[0006] Typically, the various components arranged on a roof surface, such as technical systems or fall protection systems, are individually attached to the roof surface. For this purpose, flat roofs are provided with roof penetration fastenings, which involve drilling holes into the surface coverings and the roof structure for anchoring.

[0007] It is an object of the present invention to provide safe protection for persons from falling, in particular from a roof.

[0008] The object is achieved by a fall protection device for securing a work area, in particular on a roof, wherein the fall protection device has a movable, in particular mobile, frame with a railing for separating the work area from a danger zone, wherein the fall protection device has a guide rail for guiding the frame, wherein the frame is operatively connected to the guide rail and the frame is positively guided by means of the guide rail, wherein the frame is movable substantially in a horizontal direction of movement.

[0009] The invention is based on the fundamental idea that a movable railing is used to demarcate and secure a work area, in particular on the roof of a building, in particular a flat roof. A movable, positively guided frame has a railing, so that a work area protected by the railing and a danger area are separated. The work area for a person can be displaced by moving the movable frame, in particular by moving a mobile frame. The respective position of the frame determines the respective position of the work area, for example on a roof, in particular a flat roof of a building. The possible positions of the frame are determined by the arrangement of the guide rail. In addition, the guide rail is advantageously attached to a roof, so that the railing is also attached.

[0010] The fall protection system according to the invention enables the securing of a work area for people, particularly on a flat roof, with minimal structural effort. This serves, for example, for the efficient and cost-effective installation and / or maintenance of systems installed on a roof, e.g., photovoltaic or solar thermal systems. Due to the mobility of the frame with the railing, the roof area is only slightly shaded, specifically where the railing is positioned. Minimal shading, for example, increases the yield of a photovoltaic or solar thermal system.

[0011] A railing is, in particular, a side protection device, wherein, in particular, a side protection device is a temporary railing. In one embodiment, the railing is designed as a parapet, wherein, in particular, a parapet has a closed, in particular solid, wall panel.

[0012] Advantageously, the railing is vertically oriented, particularly in a working position. In particular, the railing has a longitudinal extension, particularly at least partially, in the direction of movement of the frame. The railing is preferably designed as a grid or grid-like.

[0013] Preferably, the frame is movable along the guide rail in a horizontal direction and / or is guided essentially horizontally. In particular, the frame is movable in several essentially horizontal directions. This is the case, for example, if the guide rail has a curve or is guided around a corner.

[0014] In one embodiment, the frame is positively guided by precisely or exclusively a single guide rail, wherein the precisely one guide rail comprises, in particular, several guide rail sections arranged one behind the other in a longitudinal direction. Preferably, the guide rail is detachably or permanently attached to a roof, in particular a flat roof, or to a building wall. In another embodiment, the fall protection device has several guide rails.

[0015] Furthermore, it is advantageously provided that the guide rail has a longitudinal extension, wherein the longitudinal extension is oriented substantially horizontally, wherein, in particular, the guide rail is designed, at least in sections, as a linear guide rail. A horizontal, longitudinally extending guide rail enables reliable movement in the horizontal direction of movement of the frame and thus of the railing. In particular, the frame is positively guided along the longitudinal extension of the guide rail.

[0016] The guide rail is preferably a linear guide, in particular a straight or curved one. Advantageously, a guide rail has a curvature or a curved section, for example so that the frame can be moved in several horizontal directions of movement or the frame executes a curved movement. For example, a curved or bent guide rail enables forced guidance of the frame to travel around a corner, e.g. a roof corner. Advantageously, the guide rail has a 90-degree curvature or a curved section in at least one section. In one embodiment, the guide rail is annular and / or has a closed, circumferential design. In this way, for example, a guide rail is provided circumferentially around a roof surface. It is preferably provided that the frame can be moved along a closed movement path, in particular by forced guidance by means of the guide rail.

[0017] Furthermore, the guide rail preferably has at least two guide rail sections, wherein the at least two guide rail sections are connected by means of a guide rail joint that can be adjusted at a bending angle. In particular, the at least one guide rail joint is continuously adjustable at the respective bending angle. In particular, the at least one guide rail joint is adjustable in a straight arrangement with a bending angle of 0°.

[0018] In one embodiment, the railing is arranged, at least partially, parallel to the guide rail.

[0019] Advantageously, the guide rail is arranged at a predetermined distance laterally, in particular horizontally offset, from the frame.

[0020] In particular, the railing is spaced horizontally from the guide rail. In one embodiment, the railing is spaced horizontally from the guide rail.

[0021] Furthermore, reliable mobility of the frame and thus easy operation of the fall protection device is achieved if the frame has at least one, in particular spring-loaded, roller for moving the frame, wherein in particular the frame has at least two, in particular spring-loaded, rollers and the at least two rollers are at an equal distance from the guide rail and are spaced apart from one another in the direction of movement of the frame. The fact that the rollers run one behind the other in the direction of movement allows symmetrical loading of a subsurface, in particular the roof, and the guide rail. A spring bearing of at least one roller allows flexible compensation of unevenness in a subsurface, for example a roof.

[0022] In particular, the frame has at least two rollers, which increases the stability of the frame. In particular, the at least two rollers are arranged on an imaginary line running parallel to the guide rail.

[0023] In one embodiment, the at least one roller is designed to run in the guide rail, which is designed as a guide rail. In another embodiment, the at least one roller is designed to run in a track that is not formed by the guide rail. In this embodiment, the guide rail is not designed to directly guide the roller. The at least one roller is positively guided indirectly, rather than directly, by the guide rail.

[0024] Furthermore, it is advantageously provided that the frame is connected to the guide rail by means of at least one connecting device, wherein in particular the at least one connecting device comprises a rail carriage configured to run on the guide rail and / or wherein in particular the at least one connecting device, in particular the respective rail carriage, is detachably attached to the guide rail. A connecting device enables a reliable and secure connection between the frame and the guide rail. If the connecting device is detachable, simple assembly and disassembly is also possible.

[0025] In particular, a rail carriage has at least two, in particular at least four, carriage rollers, wherein the carriage rollers are advantageously designed to run on the guide rail. In particular, a rail carriage is a movable machine element in a sliding guide, wherein in one embodiment, the guide rail has a sliding guide. In embodiments, the rail carriage is a carriage, a roller carriage, or a trolley.

[0026] Advantageously, the frame is positively guided along a longitudinal extension of the guide rail by means of the connecting device, in particular by means of the rail carriage. Preferably, the connecting device, in particular the rail carriage, is designed to complement the guide rail in terms of shape and / or function. In particular, the connecting device, in particular the rail carriage, has a running profile that complements the shape of a guide rail.

[0027] Furthermore, for better stability and handling of the fall protection device, it is provided that the frame has at least one spacing cross member for spacing the railing, in particular horizontally, from the guide rail, wherein the at least one spacing cross member has a first end facing the guide rail and a second end facing the railing, wherein the first end of the at least one spacing cross member is fastened to at least one of the at least one connecting device by means of a first fastening device, wherein in particular the at least one spacing cross member is designed such that a distance between the railing and the guide rail is adjustable and / or that the at least one spacing cross member has an adjustable length.The at least one spacing cross member is intended to space the railing from the guide rail, whereby the spacing cross member ensures an effective connection between the guide rail and the railing.

[0028] Advantageously, the respective second end of the at least one spacing cross member is fastened to the railing by means of a respective second fastening device.

[0029] A spacing crossbeam with an adjustable length or the adjustability of the distance between the railing and the spacing crossbeam enables flexible use and easy adaptation of the fall protection for different locations. Where there is a lot of space available, the adjustable length or spacing can be increased, thus enlarging the working area and thus making it more comfortable. If there is only limited space at a location, for example due to other technical installations or one end of the roof, the adjustable length or spacing is reduced. Furthermore, it is intended that a railing can be used with different spacing crossbeams, in particular with spacing crossbeams of different lengths. The length of a spacing crossbeam is the longitudinal extent of a spacing crossbeam.

[0030] A fastening device, in particular a first or second fastening device, is in particular a screw device, a clamping device, or a plug-in device. In one embodiment, a fastening device is designed as a weld.

[0031] Advantageously, each roller is connected, particularly rigidly, to a spacing cross member and / or to the railing. In this context, "rigidly connected" refers to a connection such that the roller can only rotate around the roller axis.

[0032] Furthermore, the frame has at least two, in particular two, spacing cross members, wherein the spacing cross members are spaced apart from one another in the direction of movement of the frame, wherein in particular the spacing cross members are arranged parallel to one another and / or perpendicular to the guide rail. Two spacing cross members increase the stability of the fall protection device and the mobility of the frame.

[0033] In one embodiment, at least two spacing cross members are provided. Advantageously, two spacing cross members are arranged between two rollers. In particular, two rollers are arranged on opposite sides of two spacing cross members.

[0034] Advantageously, the at least one spacing cross member is arranged substantially horizontally.

[0035] Furthermore, more comfortable usability for uneven roof surfaces results if the at least one connecting device has a respective, in particular first, swivel joint and the respective, in particular the respective first, swivel joint is connected to the frame, in particular to at least one of the at least one spacing cross members, and / or that the frame has at least one, in particular second, swivel joint and at least one of the at least one spacing cross members is connected to the railing by means of a respective, in particular second, swivel joint.

[0036] In particular, a fastening device, in particular a first fastening device and / or a second fastening device, is designed as a pivot joint. Advantageously, a pivot joint is designed such that the respective spacing cross member is rotatable about precisely one axis of rotation, wherein, in particular, the axis of rotation runs parallel to the guide rail.

[0037] Furthermore, the ease of use of the fall protection system and the stability of the frame are further improved if the railing has a base section at a lower end and a support section at an upper end, with the at least one spacing cross member being attached to the base section of the railing. In this way, the at least one spacing cross member is attached to a lower section of the railing. The proximity of the spacing cross member to the roof surface minimizes the risk of tripping for users and ensures occupational safety.

[0038] In another embodiment, at least one spacing cross member is attached to the support section. The spacing cross members thus provide additional protection and / or demarcation of a danger zone in addition to the railing.

[0039] Furthermore, for more flexible installation, it is provided that the at least one spacing cross member is detachably attached to one of the at least one connecting device, in particular to the respective rail carriage. Thus, the frame, in particular the railing, is detachably attached to the guide rail. In another embodiment, the railing is detachably attached to at least one spacing cross member.

[0040] In a further embodiment, the guide rail, in particular at one end of the guide rail, has a locking device for locking the movement of a connecting device, in particular a rail carriage. In particular, the locking device is designed such that the connecting device remains on the guide rail when the frame moves. Advantageously, the locking device is detachably attached to the guide rail. A detachable attachment enables easy removal of the locking device and thus easy removal of the connecting device including the frame. In particular, the guide rail has a locking device at each of its two ends.

[0041] Furthermore, greater occupational safety is achieved if the working area is demarcated or can be demarcated from a danger zone by means of the railing along the direction of movement of the frame and / or if a working area is demarcated or can be demarcated from a, in particular a second, danger zone by means of the railing transverse to the direction of movement of the frame.

[0042] In particular, the railing has several railing sections, wherein the railing separates the working area from the danger zone on several sides. Advantageously, the railing has a parallel railing section aligned parallel to the guide rail, wherein the railing in particular has at least one, in particular two, vertical railing sections aligned perpendicular to the guide rail. Advantageously, the holding section of the railing has at least one parallel railing section and at least one vertical railing section. In another embodiment, the railing is arranged parallel to the guide rail.

[0043] In one embodiment, the railing has a railing door. In particular, the railing door is designed as a railing gate or the like. This allows a user to pass through the railing, for example, to enter a danger zone. For this purpose, the user is advantageously secured with a safety system other than the fall protection device according to the invention. Advantageously, the railing door is self-closing and / or provided with a locking device. In particular, the locking device is a closing device. Advantageously, the railing door is arranged parallel to the direction of movement of the frame. In another embodiment, the railing door is arranged transversely to the direction of movement of the frame.

[0044] Furthermore, the stability of the fall protection device is increased if at least one of the at least one roller has a locking device for locking the roller. The stability of the fall protection device is also increased if at least one of the at least one connecting device has a locking device for locking the connecting device to the guide rail. In particular, a rail carriage has a locking device.

[0045] A locking device, in particular on a roller and / or on a connecting device, temporarily fixes the frame and thus the railing in a position so that the working area is defined for a predetermined period of time.

[0046] Furthermore, the fall protection device preferably has a rail holding device for the guide rail, and the guide rail is held by the rail holding device. In particular, the rail holding device is designed to permanently or detachably connect the guide rail to a roof system, in particular a photovoltaic roof system for installing photovoltaic modules on a roof, in particular a flat roof. The fall protection device can be coupled to a roof by means of a rail holding device. This further increases safety and comfort during use.

[0047] A rooftop system is a structure mounted on a roof for a technical installation, particularly a technical building technology system. In particular, a rooftop system is a rooftop photovoltaic system, a rooftop cooling system, a rooftop solar thermal system, or a rooftop elevator system.

[0048] A rail holding device adapted to a roof system is particularly advantageous. In particular, the rail holding device is designed to permanently or detachably fasten the guide rail to a roof system.

[0049] Furthermore, it is advantageously provided that the railing is foldable and / or collapsible, in particular about a horizontal axis, in particular manually operated and / or by means of a drive, wherein the railing in particular has an activatable folding and / or folding mechanism for folding or folding the railing with at least one folding and / or folding locking device for locking the folding and / or folding mechanism. In particular, the height of the railing is adjustable. This results in the advantage that the railing, when folded and / or retracted, casts no or minimal shadows on adjacent parts of the roof surface. This is particularly useful for photovoltaic or solar thermal systems. In another embodiment, the frame is foldable and / or collapsible.

[0050] In one embodiment, the railing has a folding and / or folding mechanism by means of which the railing can be folded and / or folded. A folding and / or folding locking device is designed and configured to lock the folding and / or folding mechanism so that the railing remains in its previous position. This increases the safety of the fall protection device. For example, a folding and / or folding mechanism is activated in a folded state, and a folding and / or folding mechanism is deactivated in an unfolded state.

[0051] Furthermore, the fall protection device is further developed in such a way that the fall protection device has a stop device for stopping the frame. In particular, the stop device is designed and configured to stop and / or release a travel movement of the frame depending on whether the folding and / or folding mechanism is activated. Safety can be increased by means of a stop device, for example, by stopping the frame when the railing is folded or collapsed, thus ensuring a lower level of protection.

[0052] Furthermore, in one embodiment, the frame is manually operated and / or movable, in particular mobile, by means of a drive, wherein a drive, in particular a hub motor, is arranged on at least one roller. This allows the frame to be moved, in particular moved, comfortably. When manually operated, the frame is independent of a power supply and electrical control. With a drive, in particular an electric motor, the user hardly needs to exert any force to move the frame. A hub motor is characterized by high efficiency.

[0053] Furthermore, the fall protection device is further developed such that the fall protection device has a mechanical and / or electrical remote control device for remotely controlling the frame, wherein the remote control device is designed and configured to fold and / or rotate the railing and / or move, in particular displace, the frame upon actuation of the remote control device, in particular outside the work area. A remote control device for folding and / or rotating and / or moving, in particular displacing, increases the comfort when using the frame. For example, a frame can be positioned in a parked position away from a roof exit while not in use, and a user can move the frame from the parked position to the roof exit before accessing a roof from the roof exit.

[0054] For example, the remote control device comprises a cable pull and / or a threaded rod for mechanical remote control of the frame, and / or a drive, in particular a hub motor, can be controlled by the remote control device for electrical remote control of the frame. A cable pull and / or a threaded rod and / or a drive are technically simple implementations of a remote control device.

[0055] In one embodiment, the remote control device comprises a remote control. Preferably, the remote control device, in particular the remote control, is designed and configured to control the drive, in particular the hub motor, by means of wired and / or wireless communication, in particular by means of a wireless local area network (WiFi).

[0056] Furthermore, the fall protection device is characterized in that the fall protection device has a shadow monitoring unit for monitoring a shadow cast by the frame, in particular the railing, in particular on a roof, wherein the shadow monitoring unit is designed and configured to monitor a shadow cast by the frame and to control the remote control device depending on the shadow cast, wherein in particular the shadow monitoring unit has at least one light sensor and / or a clock, wherein the shadow monitoring unit is designed and configured to monitor the shadow cast by means of the at least one light sensor and / or depending on the date and / or time. By monitoring the shadow cast and an adapted, in particular automatic, movement of the frame, the shadow cast can be minimized.This increases, for example, the energy efficiency of a photovoltaic system and / or solar thermal system arranged on a roof surface. Preferably, the shadow monitoring unit is designed and configured to detect the actual position of the sun using at least one light sensor. When monitoring based on the date and / or time, monitoring is carried out, in particular, based on predetermined environmental data, such as the geographical location and orientation of a roof surface.

[0057] Furthermore, the fall protection system can be used flexibly if it can be coupled with a fixed ladder and / or a roof access and / or a roof exit. The interaction of the coupling increases safety when working on a roof surface.

[0058] Furthermore, one embodiment provides for the guide rail to be designed as an anchor point for an individual fall arrest device. The fall protection device, in particular, comprises an individual fall arrest device with an anchor point slide. The anchor point slide is detachably attached to the guide rail and movable along the guide rail, in particular lockable, and the guide rail is, in particular, attached to the roof. The combination of the two different types of protection increases occupational safety.

[0059] Furthermore, the flexibility of the fall protection system is improved if the fall protection system includes a storage container for holding tools, wherein the storage container can be releasably attached to the guide rail and / or the frame, in particular to the railing and / or at least one spacing cross member. A storage container reduces the number of necessary paths on a roof surface and thus increases safety.

[0060] Furthermore, embodiments provide for the fall protection device to have a lightning protection device, wherein the lightning protection device has a lightning arrester, in particular one fastened to the railing, and a lightning conductor electrically connected to the lightning arrester, wherein the lightning conductor is electrically connectable or connected to an earthing system, in particular arranged on the roof, in particular by means of the guide rail. This increases occupational safety. The lightning arrester device is, for example, a lightning rod, wherein in particular the lightning rod is fastened to the frame. For example, at least in sections, the frame and / or at least one spacing cross member is designed as a lightning conductor.In one embodiment, a lightning current is conducted from a lightning protection rod through the railing, at least one spacing cross member and a connecting device to the guide rail, wherein the guide rail is electrically connected to an earthing system attached to the roof.

[0061] In order to counteract electrical insulation of the frame and thus increase work safety, at least one roller is made of metal.

[0062] Furthermore, embodiments provide for the connecting device to be electrically conductively connected to the guide rail. For example, a connecting device, in particular a rail carriage, is electrically connected to the guide rail by means of a contact wire and / or by means of direct electrical contact.

[0063] The possible applications of a fall protection system are increased if the frame has a weather protection hood for protection against UV radiation and / or precipitation. In particular, the weather protection hood is detachably attachable or attached to the railing and / or is at least partially transparent and / or expandable. In particular, the weather protection hood is attachable or attached to an upper end of the railing. The weather protection hood is preferably designed as a foldable tarpaulin or a dimensionally stable dome.

[0064] Furthermore, embodiments provide for the fall protection device to have a location unit for detecting a current position of the frame and / or the at least one connecting device, wherein the location unit is designed and configured to detect and / or transmit the current position of the frame and / or the at least one connecting device by means of GPS and / or Bluetooth and / or ultra-wideband communication. This enables precise positioning of the frame and thus a high level of occupational safety. In combination with a shadow monitoring unit, increased efficiency of a photovoltaic system arranged on the roof is further enabled. In particular, the location unit is designed and configured to locate and display the current position on a map.

[0065] Furthermore, it is advantageously provided that the fall protection device has a user monitoring device for monitoring a user, wherein the user monitoring device is designed and configured - to detect a fall of a user, in particular by means of a force sensor arranged in the railing to measure a force acting on the railing, and / or - to detect the presence of at least one user and / or a number of users present, in particular by means of an RFID chip arranged on the frame that can be coupled to a mobile terminal device, and / or - to enter a user into an attendance register for use and to remove a user from an attendance register for leaving.

[0066] In this way, the safety of the fall protection is increased.

[0067] In particular, the user monitoring device comprises a signaling device for emitting an alarm signal, wherein the signaling device is designed and configured to emit an alarm signal when a user's fall is detected and / or when a previously present user is absent for a predetermined period of time. Preferably, the signaling device comprises a confirmation device for acknowledging the alarm signal. This serves to better detect a potential accident and thus increases occupational safety.

[0068] Furthermore, the object is achieved by a roof safety system for securing persons on a roof, in particular a flat roof, with a fall protection device described above, wherein the guide rail of the fall protection device is arranged on the roof, wherein in particular the guide rail is fastened to a roof system arranged on the roof, in particular a photovoltaic roof system for installing photovoltaic modules. The photovoltaic roof system for installing photovoltaic modules is in particular a mounting frame for installing photovoltaic modules.

[0069] Furthermore, the roof safety system is designed according to the features described above. To avoid unnecessary repetition, reference is made to the above explanations.

[0070] In embodiments, the roof safety system comprises, in addition to the fall protection described above, further components for securing a roof surface, for example at least one further collective safety system and / or at least one individual protection system.

[0071] According to the invention, the guide rail of the fall protection device is arranged on the roof. In particular, the guide rail is connected to the roof, advantageously detachably and / or permanently attached to the roof. In one embodiment, the fall protection device is connected to the roof by means of a rail retaining device.

[0072] Advantageously, a guide bracket of the fall protection system is detachably and / or permanently attached to a roof system arranged on the roof. In particular, the roof system is designed with a receiving unit for receiving the guide bracket.

[0073] Finally, the object is achieved by using a fall protection device as described above to secure a work area on a roof, in particular on a flat roof.

[0074] The use combines the advantages and features described for fall protection, so that in order to avoid repetition, reference is made to the above explanations.

[0075] Further features of the invention will become apparent from the description of embodiments of the invention together with the claims and the accompanying drawings. Embodiments of the invention may incorporate individual features or a combination of several features.

[0076] Within the scope of the invention, features marked with “in particular” or “preferably” are to be understood as optional features.

[0077] The invention is described below, without limiting the general inventive concept, using exemplary embodiments with reference to the drawings, whereby express reference is made to the drawings for all details of the invention not explained in more detail in the text. They show: Fig. 1 a schematic, perspective view of a first embodiment of a roof securing system, Fig. 2 a first schematic, side view of the first embodiment of the roof securing system, Fig. 3 a second schematic, side view of the first embodiment of the roof securing system, Fig. 4 a third schematic, side view of the first embodiment of the roof securing system, Fig. 5 a partial schematic representation of the first embodiment of the roof securing system, Fig. 6 a schematic, perspective view of a second embodiment of a fall protection device, Fig. 7 a partially schematic, perspective view of a third embodiment of a fall protection device, Fig. 8 a schematic, side view of a fourth embodiment of a fall protection device, and Fig. 9 a schematic, perspective view of a fourth embodiment of a fall protection device in a roof safety system.

[0078] In the drawings, identical or similar elements and / or parts are provided with the same reference numbers, so that a repeated presentation is omitted.

[0079] Fig. 1 shows a schematic, perspective view of a first embodiment of a roof securing system 100, which is mounted on a flat roof 32 of a building (cf. Fig. 4). The roof safety system 100 comprises a roof system 90, which is configured as a photovoltaic roof system 92, and a fall protection device 20. The photovoltaic roof system 92 comprises a plurality of photovoltaic modules 94.

[0080] In Fig. 2 is the Fig. The first embodiment of a roof safety system 100 shown in Figure 1 is shown schematically from the side. A roof system 90, designed as a photovoltaic roof system 92, onto which photovoltaic modules 94 are mounted, is connected to a fall protection device 20.

[0081] The fall protection device 20 has a frame 40 comprising a railing 80 and a guide rail 60. The railing 80 separates a work area 22 from a danger zone 24. The user 26 stands in the work area 22 and is protected by the railing 80 from falling into the danger zone 24.

[0082] The frame 40 includes two rollers 42, which facilitate manual movement of the frame 40. The frame 40 is positively guided by a guide rail 60. The guide rail 60 is attached to the roof system 90.

[0083] To limit the range of movement of the frame 40, which is positively guided by the guide rail 60, the guide rail 60 has a locking device 64 at each of its ends. The locking devices 64 are designed to prevent the frame 40 from moving beyond the locking device 64. As a result, the frame 40 is secured on the guide rail 60. For disassembly of the fall protection device 20, in one embodiment, the locking devices 64 are releasably attached to the guide rail 60, so that the frame can be separated from the guide rail 60 without opening the connecting devices 70.

[0084] The fall protection device 20 comprises a frame 40 and a guide rail 60, which are connected by means of a connecting device 70. The connecting device 70 is designed as a rail carriage 72. The guide rail 60 is fastened to the roof system 90 by means of a rail holding device 62, with further details on this fastening in Fig. 5 are shown.

[0085] A user 26 stands between the railing 80 and the photovoltaic modules 94 in a work area 22. The frame 40 including the railing 80 is perpendicular to the plane of the drawing of Fig. 2 movable.

[0086] The frame 40 has the railing 80, a roller 42, and a spacing cross member 44. The spacing cross member 44 comprises a first end 46 and a second end 47, with the second end 47 being connected to the railing 80. The roller 42 is also arranged at the second end 47 of the spacing cross member 44. The spacing cross member 44 is attached to the railing 80 in a base section 84. The upper section of the railing 80, which protects the user 26 from falling into the danger zone 24, is the holding section 82.

[0087] A first rotary joint 74 is arranged between the spacing cross member 44 and the connecting device 70 at the first end 46 of the spacing cross member 44, so that the spacing cross member can be rotated about exactly one axis.

[0088] In Fig. 3 is the same first embodiment of a roof securing system 100 in a side view perpendicular to the perspective of Fig. 2 shown.

[0089] The user 26 is depicted behind a railing 80, positioned within a protected work area 22. The railing 80 has an upper support section 82 and a lower base section 84. Two spacing cross members 44 are connected to the railing 80 in the lower base section 84, with one of the rollers 42 being provided on each spacing cross member 44.

[0090] The spacing cross members 44 connect and space the railing from the guide rail 60, which is attached to the roof system 90 designed as a photovoltaic roof system 92. In the right part of the image of Fig. 3 shows an interruption with jagged lines.

[0091] Fig. 4 shows a similar view to Fig. 2, where no user 26 is shown. Instead, a working area 22 is shown with hatched lines. On the other side of the railing 80, the danger zone 24 is located. Furthermore, Fig. 4 a roof 30 designed as a flat roof 32, which has an attic 96, is shown with different hatching.

[0092] Furthermore, the railing 80 has an axis 86 about which the railing 80 can be folded by means of a folding mechanism 87. This reduces the height of the railing 80, which is particularly useful when the railing 80 is not needed to protect a user 26, and reduces the shading of the photovoltaic modules 94 by the railing 80. In other embodiments, for example, the railing 80 is foldable along a vertical axis, thus reducing the width of the railing 80.

[0093] Furthermore, Fig. 4 the same components which are already in Fig. 2: The frame 40 has a roller 42 and a spacing cross member 44. The spacing cross member 44 is connected by means of a first pivot joint 74 to a connecting device 70 designed as a rail carriage 72. The rail carriage 72 is designed to run on the guide rail 60, so that the frame 40 can be moved perpendicular to the plane of the drawing, guided by the guide rail 60.

[0094] In Fig. 5 is a section of the first embodiment of a roof securing system 100, namely the attachment of the frame 40 to the guide rail 60 and the attachment of the guide rail 60 to the roof system 90, shown in more detail.

[0095] A first pivot joint 74 is attached to the first end 46 of the spacing cross member 44. The first pivot joint 74 is connected by two screws to a connecting device 70 designed as a rail carriage 72. The rail carriage 72 has two rail carriage rollers 76. In another embodiment, the rail carriage 72 has four rail carriage rollers 76.

[0096] The rail carriage rollers 76 run on the guide rail 60. The guide rail 60 serves to positively guide the rail carriage 72 and the frame 40 connected to it.

[0097] The guide rail 60 is connected to a roof system 90 by means of a rail holding device 62. In this exemplary embodiment, the roof system 90 is a photovoltaic roof system 92, which has support supports for placing photovoltaic modules 94 on a flat roof 32. The rail holding device 62 is screwed onto such a support support of the photovoltaic roof system 92.

[0098] Fig. 6 shows a schematic, perspective view of a second embodiment of a fall protection device 20. In this embodiment, the fall protection device 20 has two guide rails 60 that are attached to a flat roof 32 (not shown in detail). For example, the guide rails 60 are directly inserted into or attached to a bitumen-containing roof surface.

[0099] The frame 40 is operatively connected to the guide rails 60 by means of four rollers 42 and is positively guided by the positive guidance of the rollers 42 in the guide rails 60. The frame 40 is essentially movable in a horizontal direction of movement, which is predetermined by the guide rails 60. The guide rails 60 are designed as running rails in this embodiment. In addition, the guide rails 60 are provided for directly guiding the rollers 42. In Fig. 6 shows three rollers 42, with a fourth roller hidden behind the user 26.

[0100] Furthermore, as in the first embodiment of a roof safety system 100, the fall protection device 20 has two spacing cross members 44. In this embodiment, each spacing cross member 44 connects two rollers 42.

[0101] The positive guidance of the rollers 42 in the guide rails 60 is achieved, for example, by the dead weight of the frame 40 or by additional fixing devices provided on the rollers 42. Such fixing devices can be designed as connecting devices 70. In particular, it should be noted that the guide rails 60 are only shown schematically and, for example, have a predetermined depth, in particular a recess in the vertical direction.

[0102] In Fig. 7 shows a schematic, perspective view of a section of a third embodiment of a fall protection device 20. The embodiment is similar to that shown in Fig. 1 to 5, but instead of the rollers 42, feet 54 are provided.

[0103] Accordingly, in this exemplary embodiment, the frame 40 comprises, in addition to a railing 80 and spacing cross members 44, two support feet 54. The spacing cross members 44 are connected by means of first pivot joints 74 to connecting devices 70 designed as rail slides 72. These fasten the frame 40 to the guide rail 60, which forcibly guides the frame 40 along a horizontal direction of movement.

[0104] To move the frame, the user 26 lifts it slightly, for example by means of the first pivot joints 74, moves it into position along the guide rail, and places it on the feet 54 in the new desired position.

[0105] In Fig. Figure 8 shows a schematic, side view of a fourth embodiment of a fall protection device 20. The embodiment in Fig. 8 is similar to the embodiment shown in Fig. 3, wherein the fall protection device 20 has a remote control device 110 as a further feature.

[0106] A drive embodied as a hub motor 43 is arranged on each of the rollers 42, which serves to move the frame 40 with railing 80. The hub motors 43 can be controlled by a remote control device 110 for electrical remote control of the frame 40.

[0107] The remote control device 110 is at one end of the guide rail 60, in Fig. 8 shown on the right. A remote control 114 is mounted on a remote control stand 112, which remote control has two remote control buttons 116. Upon actuation of one of the remote control buttons 116, the frame 40 is moved in one direction by means of the remote control device 110. In the plane of the drawing in Fig. 8, the frame 40 is movable to the left and right. The remote control device 110 is shown arranged outside the work area 22 secured by the railing 80. For example, the remote control device 110 is positioned next to a roof exit or a roof access.

[0108] In a further embodiment, after completion of work on a roof 30, the frame 40 is parked away from the roof exit by means of the remote control device 110, specifically in an area of ​​the roof where the fall protection system 20 does not cast a shadow on photovoltaic modules 94. During the next maintenance visit to the roof 30, the frame 40 of the fall protection system 20 is first moved to the remote control 114 by means of the remote control device 110, where the user 26 enters the work area 22 of the fall protection system 20.

[0109] Fig. 9 shows a schematic, perspective view of a fourth embodiment of a fall protection device 20 in a roof safety system 100. The fall protection device 20 is similar to the one shown in Fig. 1, but has some different features.

[0110] The fall protection system 20 comprises a lightning protection device having a lightning arrester 85 attached to the railing 80. This is a vertically projecting rod, which thus forms the highest point of the roof safety system 100. The lightning arrester 85 is electrically connected to a lightning conductor. In this exemplary embodiment, the lightning conductor is formed from the railing 80, two spacing cross members 44, and two connecting devices 70 designed as rail slides 72. The rail slides 72 are electrically connected to the guide rail 60. The guide rail is connected to a grounding 98 attached to the roof by means of a grounding cable 99. In this way, a lightning strike striking the lightning arrester 85 can be safely diverted to the grounding 98 by the fall protection system 20.

[0111] Furthermore, in Fig.In the fourth embodiment shown in Figure 9, the guide rail 60 is designed as an anchor point for an individual fall arrest device. Two anchor point slides 73 are attached to the guide rail 60 and can be moved lockably along the guide rail. The anchor point slides 73 can be coupled to the personal protective equipment of a user 26, for example, a fall arrest harness.

[0112] Finally, the fall protection device 20 includes a shadow monitoring unit 89, which includes a plurality of light sensors 88. In this exemplary embodiment, the shadow monitoring unit 89 includes a single-board computer connected to a plurality of light sensors 88. Furthermore, the single-board computer includes a clock, so that the date and time can be processed using the shadow monitoring unit 89. The light sensors 88 are arranged at three positions on the railing 80 and at two positions on the photovoltaic modules 94.

[0113] The shadow monitoring unit 89 is designed and configured to control a remote control device 110 depending on the shadow cast and, for example, to move the frame 40 along the guide rail 60 and / or to actuate a folding and / or folding mechanism 87.

[0114] For example, it is provided that the railing 80 is folded in as soon as the shadow monitoring unit 89 detects direct sunlight on the light sensors 88 arranged on the railing 80. In another example, the shadow monitoring unit 89 monitors direct sunlight on light sensors 88 arranged on the photovoltaic modules 94. As soon as shadows are identified, the frame 40 is moved to another position. In an embodiment in which the frame 40 is movable along a guide rail 60 enclosing the roof 30, the frame 40 is moved, for example, to the side of the photovoltaic modules 94 facing away from the sun.

[0115] In one embodiment, the shadow monitoring unit 89 uses a clock to monitor the shadow cast, particularly in combination with predetermined environmental data. For example, when the photovoltaic modules 94 and the fall protection system 20 are commissioned, the orientation of the roof 30 and the direction of solar radiation are determined depending on the time of day. Using this information, the shadow monitoring unit 89 is configured, for example, to move the railing 80 westward in the morning and eastward in the evening using a remote control device 110, so that the shadow cast by the railing 80 on the photovoltaic modules 94 is minimized.

[0116] In particular, a maintenance mode is provided for the shadow monitoring unit 89, so that automatic movement and / or folding when the fall protection device 20 is used by a user 26 is suspended as long as the maintenance mode is activated.

[0117] All mentioned features, including those that can be inferred from the drawings alone, as well as individual features disclosed in combination with other features, are considered essential to the invention, both individually and in combination. Embodiments according to the invention may be fulfilled by individual features or a combination of several features. List of reference symbols 20 Fall protection 22 Work area 24 Danger zone 26 users 30 roof 32 flat roof 40 frame 42 roller 43 hub motor 44 spacing traverse 46 first end 47 second end 48 first fastening device 52 locking device 54 Stand 60 guide rail 62 Rail holding device 64 locking device 70 connecting device 72 rail carriages 73 Anchor point slide 74 first swivel joint 75 second swivel joint 76 Rail carriage roller 80 railings 82 stopping section 84 Base section 85 lightning arrester 86 Axis 87 Folding mechanism 88 Light sensor 89 Shadow Monitoring Unit 90 roof system 92 photovoltaic roof system 94 photovoltaic modules 96 Attica 98 Grounding 99 Earthing connection cables 100 roof security system 110 Remote control device 112 remote control stand 114 Remote control 116 Remote control button

Claims

[1] Fall protection device (20) for securing a work area (22), in particular on a roof (30), wherein the fall protection device (20) has a movable, in particular mobile, frame (40) with a railing (80) for delimiting the work area (22) from a danger zone (24), wherein the fall protection device (20) has a guide rail (60) for guiding the frame (40), wherein the frame (40) is operatively connected to the guide rail (60) and the frame (40) is positively guided by means of the guide rail (60), wherein the frame (40) is movable substantially in a horizontal direction of movement. [2] Fall protection device (20) according to claim 1, characterized byin that the guide rail (60) has a longitudinal extension, wherein the longitudinal extension is oriented substantially horizontally, wherein in particular the guide rail (60) is designed at least in sections as a linear guide rail (60) and / or the guide rail (60) has at least two guide rail sections, wherein the at least two guide rail sections are connected by means of a guide rail joint which can be adjusted at a bending angle. [3] Fall protection device (20) according to claim 1 or 2, characterized by that the frame (40) has at least one, in particular spring-mounted, roller (42) for moving the frame (40), wherein in particular the frame (40) has at least two, in particular spring-mounted, rollers (42) and the at least two rollers (42) are at an equal distance from the guide rail (60) and are spaced apart from one another in the direction of movement of the frame (40). [4] Fall protection device (20) according to one of claims 1 to 3, characterized by that the frame (40) is connected to the guide rail (60) by means of at least one connecting device (70), wherein in particular the at least one connecting device (70) each has a rail carriage (72) designed to run on the guide rail (60) and / or wherein in particular the at least one connecting device (70), in particular the respective rail carriage (72), is detachably fastened to the guide rail (60). [5] Fall protection device (20) according to claim 4, characterized byin that the frame (40) has at least one spacing cross member (44) for spacing the railing (80) from the guide rail (60), in particular horizontally, wherein the at least one spacing cross member (44) has a first end (46) facing the guide rail (60) and a second end (47) facing the railing (80), wherein the first end (46) of the at least one spacing cross member (44) is fastened to at least one of the at least one connecting devices (70) by means of a first fastening device (48), wherein in particular the at least one spacing cross member (44) is designed such that a distance between the railing (80) and the guide rail (60) is adjustable and / or that the at least one spacing cross member (44) has an adjustable length. [6] Fall protection device (20) according to claim 5, characterized bythat the frame (40) has at least two, in particular two, spacing cross members (44), wherein the spacing cross members (44) are spaced apart from one another in the direction of movement of the frame (40), wherein in particular the spacing cross members (44) are arranged parallel to one another and / or perpendicular to the guide rail (60). [7] Fall protection device (20) according to claim 5 or 6, characterized by that the at least one connecting device (70) each has a, in particular a first, rotary joint (74) and the respective, in particular the respective first, rotary joint (74) is connected to the frame (40), in particular to at least one of the at least one spacing cross members (44), and / or that the frame (40) has at least one, in particular a second, rotary joint (75) and at least one of the at least one spacing cross members (44) is connected to the railing (80) by means of a, in particular a second, rotary joint (75). [8] Fall protection device (20) according to one of claims 5 to 7, characterized by that the railing (80) has a base section (84) at a lower end and a holding section (82) at an upper end, wherein the at least one spacing cross member (44) is fastened to the base section (84) of the railing (80). [9] Fall protection device (20) according to one of claims 5 to 8, characterized by that the at least one spacing cross member (44) is detachably fastened to one of the at least one connecting device (70), in particular to the respective rail carriage (72). [10] Fall protection device (20) according to one of claims 1 to 9, characterized bythat the working area (22) is or can be demarcated from a danger area (24) by means of the railing (80) along the direction of movement of the frame (40) and / or that a working area (22) is or can be demarcated from a, in particular second, danger area (24) by means of the railing (80) transversely to the direction of movement of the frame (40). [11] Fall protection device (20) according to one of claims 2 to 10, characterized by that at least one of the at least one roller (42) has a locking device (52) for locking the roller (42) and / or at least one of the at least one connecting device (70) has a locking device (52) for locking the connecting device (70) on the guide rail (60). [12] Fall protection device (20) according to one of claims 1 to 11, characterized byin that the fall protection device (20) has a rail holding device (62) for the guide rail (60) and the guide rail (60) is held by the rail holding device (62), wherein in particular the rail holding device (62) is designed to permanently or detachably connect the guide rail (60) to a roof system (90), in particular a photovoltaic roof system (92) for erecting photovoltaic modules (94) on a roof (30), in particular a flat roof (32). [13] Fall protection device (20) according to one of claims 1 to 12, characterized bythat the railing (80) is foldable and / or collapsible, in particular about a horizontal axis (86), in particular manually operated and / or by means of a drive, wherein in particular the railing (80) for folding or folding the railing (80) has an activatable folding and / or folding mechanism (87) with at least one folding and / or folding locking device for locking the folding and / or folding mechanism (87). [14] Fall protection device (20) according to claim 13, characterized by in that the fall protection device (20) has a stop device for stopping the frame (40), wherein in particular the stop device is designed and configured to stop and / or release a travel movement of the frame (40) depending on whether the folding and / or folding mechanism (87) is activated. [15] Fall protection device (20) according to one of claims 1 to 14, characterized bythat the frame (40) is manually operated and / or movable, in particular mobile, by means of a drive, wherein in particular a drive, in particular a hub motor (43), is arranged on at least one roller (42). [16] Fall protection device (20) according to one of claims 13 to 15, characterized by in that the fall protection device (20) has a mechanical and / or electrical remote control device (110) for remotely controlling the frame (40), wherein the remote control device (110) is designed and configured to fold and / or tilt the railing (80) and / or to move, in particular to displace, the frame (40) upon actuation of the remote control device (110), in particular outside the working area (22). [17] Fall protection device (20) according to claim 16, characterized bythat the remote control device (110) has a cable pull and / or a threaded rod for mechanical remote control of the frame (40) and / or a drive, in particular a hub motor (43), can be controlled by means of the remote control device (110) for electrical remote control of the frame (40). [18] Fall protection device (20) according to claim 16 or 17, characterized byin that the fall protection device (20) has a shadow monitoring unit (89) for monitoring a shadow cast by the frame (40), in particular the railing (80), in particular on a roof (30), wherein the shadow monitoring unit (89) is designed and configured to monitor a shadow cast by the frame (40) and to control the remote control device (110) depending on the shadow cast, wherein in particular the shadow monitoring unit (89) has at least one light sensor (88) and / or a clock, wherein the shadow monitoring unit (89) is designed and configured to monitor the shadow cast by means of the at least one light sensor (88) and / or depending on the date and / or time. [19] Fall protection device (20) according to one of claims 1 to 18, characterized by that the fall protection device (20) can be coupled to a ladder and / or a roof access and / or a roof exit. [20] Fall protection device (20) according to one of claims 1 to 19, characterized by in that the guide rail (60) is designed as an anchor point for an individual fall arrest device, wherein in particular the fall protection device (20) comprises an individual fall arrest device with an anchor point slide (73), wherein the anchor point slide (73) is detachably fastened to the guide rail (60) and is movable along the guide rail (60), in particular lockable, wherein in particular the guide rail (60) is fastened to the roof (30). [21] Fall protection device (20) according to one of claims 1 to 20, characterized by in that the fall protection device (20) has a storage container for holding tools, wherein the storage container can be detachably fastened to the guide rail (60) and / or to the frame (40), in particular to the railing (80) and / or at least one spacing cross member (44). [22] Fall protection device (20) according to one of claims 1 to 21, characterized by in that the fall protection device (20) has a lightning protection device, wherein the lightning protection device has a lightning arrester device (85), in particular fastened to the railing (80), and a lightning conductor electrically connected to the lightning arrester device (85), wherein the lightning conductor can be or is electrically connected to an earthing system (98), in particular arranged on the roof (30), in particular by means of the guide rail (60). [23] Fall protection device (20) according to one of claims 3 to 22, characterized by that the at least one roller (42) is made of metal. [24] Fall protection device (20) according to one of claims 4 to 23, characterized by that the connecting device (70) can be or is connected in an electrically conductive manner to the guide rail (60). [25] Fall protection device (20) according to one of claims 1 to 24, characterized bythat the frame (40) has a weather protection hood for protection against UV radiation and / or precipitation, wherein in particular the weather protection hood can be or is fastened detachably to the railing (80) and / or the weather protection hood is, at least partially, transparent and / or can be opened up. [26] Fall protection device (20) according to one of claims 1 to 25, characterized by in that the fall protection device (20) has a location unit for detecting a current position of the frame (40) and / or the at least one connecting device (70), wherein the location unit is designed and configured to detect and / or transmit the current position of the frame (40) and / or the at least one connecting device (70) by means of GPS and / or Bluetooth and / or ultra-wideband communication. [27] Fall protection device (20) according to one of claims 1 to 26, characterized bythat the fall protection device (20) has a user monitoring device for monitoring a user (26), wherein the user monitoring device is designed and arranged - to detect a fall of a user (26), in particular by means of a force sensor arranged in the railing (80) for measuring a force acting on the railing (80), and / or - to detect the presence of at least one user (26) and / or a number of present users (26), in particular by means of an RFID chip arranged on the frame (40) that can be coupled to a mobile terminal, and / or - to enter a user (26) into an attendance register for use and to remove a user (26) from an attendance register for leaving. [28] Roof safety system (100) for securing persons on a roof (30), in particular a flat roof (32), with a fall protection device (20) according to one of claims 1 to 27, wherein the guide rail (60) of the fall protection device (20) is arranged on the roof (30), wherein in particular the guide rail (60) is fastened to a roof system (90) arranged on the roof (30), in particular a photovoltaic roof system (92) for erecting photovoltaic modules (94). [29] Use of a fall protection device (20) according to one of claims 1 to 27 for securing a working area (22) on a roof (30), in particular on a flat roof (32).

Images