EP2666931A2 - Fastening system for retaining and securing at least one person - Google Patents

Abstract

The system (12) has multiple strand elements (14, 15) arranged next to each other. The strand elements form respective networks (17, 18), and are extended below and from a side of a flat building structure (11). The network provides access to one or multiple portions of a center area of a bottom (10) of the building structure to examine, control and/or repair the bottom of the building structure by a person. Distance between the networks is equal to 20 mm, preferably 15 mm or within a range of 5-15 mm. The strand elements are provided for holding and/or securing the person.

Description

The invention relates to a stop system, in particular for platforms in the offshore area for holding and securing at least one person spaced from a surface and located below a flat building structure with at least one strand element.

It is known that a person is held with a strand element, such as a rope, below a flat building structure, in particular to perform maintenance, repair and / or installation work at individual points of the underside of the flat building structure. Preferably, a strand element for holding and another strand element for securing the person are provided. In particular, a first rope serves as a tether and a second rope as a safety rope. Preferably, the tether and the safety rope form a holding path.

The disadvantage is that in the horizontal direction immediately below the underside of the flat building structure and in the longitudinal direction of the flat building structure practically no or only a very limited ability to move for the person, in particular an industrial climber and / or vertical workers, is given.

Furthermore, there is the disadvantage that in particular the underside of a platform, in particular a jacket construction, is difficult or impossible to reach for maintenance and / or repair work. In particular, in the case of flat building structures which are used in the offshore sector, the planar building structure is possibly accessible in the region of the outer supports and thus only the edge region of the underside of the planar building structure in order, for example, to carry out a visual inspection, maintenance and / or repair work. In this case, the person must reach over the edge of the planar building structure from above to the underside of the planar building structure. If the person hangs in the edge region of the planar building structure in a seat belt held on the strand element, however, the underside of the planar construction structure is not accessible to the person, in particular within arm reach, or at most only in the edge region of the planar construction structure. Maintenance, installation and / or repair work on the entire bottom, in particular in one of the edge region of the bottom surrounding the central region of the underside of the flat building structure are thus not feasible by means of the known stop system. This applies in particular if entry is only possible via the edge of the areal structure, such as an offshore platform.

However, the underside, in particular a center region of the underside, of a flat building structure, in particular of a platform which is spaced several meters from the ground or the sea surface, must be regularly inspected and optionally maintained and / or repaired. This applies in particular platforms in the offshore sector, for example in wind turbines, substations, gas production and / or oil production facilities. The saline environment promotes premature corrosion, requiring regular inspections and repairs to maintain and protect the structures, especially those made of steel. Preferably, the underside of the planar building structure has an edge region and a central region surrounding the edge region.

It is therefore the problem underlying the invention, a stop system of the type mentioned in such a way that a bottom, in particular a central region of the underside, a flat building structure is accessible in a simple and secure manner.

The problem is solved with a stop system of the type mentioned, in which a plurality of juxtaposed and spaced apart first strand elements form a first network, wherein the first strand elements below and from one side of the planar structure to a side facing away from one side further side of the flat Construction structure extend and the first network accessibility to at least a portion of a central region of an underside of the planar Building structure for inspecting, maintaining and / or repairing the underside by a person manufactures.

It is advantageous that at least a portion of the bottom, in particular a central region of the underside or the entire bottom, the sheet-metal structure is accessible to a person. The strand members are preferably spaced apart in arm reach. In this way, a person can change from a strand element or a retaining stretch to a nearest strand element or a nearest retaining stretch, whereby a continuous surface of the underside is accessible to the person. Thus, the underside of the sheet-like structure is accessible by a person held, which in particular inspection, maintenance and / or repair work in a simple yet secure way are possible. As soon as a person has entered the stop system according to the invention, the person within the stop system can move horizontally below the flat building structure. Preferably, the surface from which a person supported by the fence system is spaced is a surface of the earth or a sea surface.

As a strand element in the context of this invention, in particular ropes, straps, rails, rails, chains and / or tubes, preferably steel cables or rods to understand, as far as these for striking, holding and / or securing at least one person, preferably with a seat belt and / or seat board, are suitable. Preferably, a rolling device is attributable to the strand element, wherein a person connected to the rolling device and / or suspended in this person with the rolling device in the longitudinal direction of the strand element and / or the holding section is movable. Alternatively or additionally, a working device, in particular a working bag and / or a working platform, connected to the rolling device and / or be mounted in this. As far as in the context of the present invention of a strand element is mentioned, including a first strand element and / or a second strand element to understand. With regard to its longitudinal orientation, the strand element preferably extends in a substantially horizontal direction and / or in the longitudinal direction of the plane of the planar construction structure below the underside of the planar construction structure.

In the context of the present application, a network and / or a network level is preferably to be understood as meaning the arrangement of a plurality of strand elements which are next to one another, in particular parallel to one another, and spaced apart from one another. In particular, in the context of the present application, a grid network is formed from two such networks and / or network levels, wherein the strand elements of a first network and / or a first network plane are aligned transversely, in particular at right angles, to the strand elements of a second network and / or a second network plane ,

One side of the planar building structure in the sense of the present invention may be an end of the flat building structure or any point on the underside of the flat building structure. Thus, one side of the planar building structure and a further side facing away from the one side of the flat building structure as a point on the underside of the sheet structure and a remote from this point and / or further remote point on the underside of the flat building structure can be construed. Preferably, one side of the flat building structure is to be understood as meaning an end and / or an edge of the flat building structure.

Preferably, the stop system is designed for striking, holding and / or securing at least two, preferably three, persons at the same time. As a result, in particular inspection, maintenance and / or repair work, preferably in larger area building structures, within a shorter working time feasible than with a single person.

According to a further embodiment form, in particular a plurality of juxtaposed and spaced apart, second strand elements a second network. In particular, the second strand elements form further holding sections. In this case, the second strand elements extend beneath the planar building structure and extend from one side of the planar building structure to an additional side of the planar building structure facing away from the one side. The first strand elements preferably extend from a first side of the planar construction structure to a second side of the planar construction structure facing away from the first side and / or the second strand elements extend from a third side of the planar construction structure to a fourth side of the planar construction structure facing away from the third side , In particular, the first side, the second side, the third side and / or the fourth side of the planar structure differ from each other. The first strand elements and / or the second strand elements can be aligned parallel to one another and / or parallel to the planar construction structure and be spaced apart from one another. Preferably, the first strand elements and / or the second strand elements extend, in particular with respect to their longitudinal orientation, below the underside of the planar construction structure. The first strand elements and the second strand elements may be of similar construction. In particular, the first strand elements and the second strand elements are arranged differently from each other. This results in a variety of possible arrangements of the first and second strand elements to each other, which additional stop options for a person can be realized.

The second strand elements are preferably oriented transversely, in particular at right angles, to the first strand elements in order to form a grid. Such a grid is simple in construction and at the same time allows a variety of functions, as will become more apparent below.

According to a development, the first strand elements form a first network and / or the second strand elements form a second network. Thus, two independent networks and / or network levels are available, whereby a greater functionality is achievable. Preferably, the first network, in particular the first network level, and the second network, in particular the second network level, are spaced apart from one another. As a result, the risk of contact, in particular rubbing against one another, of the first strand elements and of the second strand elements can be reduced, as a result of which undesired material wear and the risk of a material break can be avoided.

Preferably, immediately adjacent first strand elements of the first network and / or second strand elements of the second network, in particular laterally and / or horizontally next to one another, are spaced apart within arm reach. In particular, the distance of immediately adjacent first strand elements and / or second strand elements, preferably lateral and / or horizontal, is approximately 1 m. For the realization of the invention, it is sufficient if the immediately adjacent strand elements of a single network are spaced apart in arm range. In this way, a person can change from one strand element to the next adjacent strand element, in particular in the horizontal direction. In this way, as well as the possibility to move in the longitudinal direction of the strand element, in particular in the horizontal direction, each point of the underside of the flat building structure can be reached from below.

Preferably, in particular exclusively, in the edge region of the planar structural structure and below the underside to the first strand elements of the first network, a second strand element is arranged transversely, in particular at right angles, to the first strand elements. In particular, two second strand elements are arranged transversely, in particular at right angles, to the first strand elements in the edge region of the planar structural structure. In particular, the immediately adjacent first strand elements of the first network with a distance of about 1 m and the immediately adjacent second strand elements of the second network with a distance of about 4 m apart.

In particular, the distance, in particular vertical, between the first network and / or the first network plane on the one hand and the second network and / or the second network plane on the other hand is less than 20 mm, preferably less than 15 mm. Particularly preferably, the distance between the first network and the second network is in the range of 5 mm to 15 mm. On the other hand, the distance between the first network and / or the second network on the one hand and the underside of the planar structure on the other hand is less than 1 m, preferably less than 50 cm, particularly preferably at least 10 cm. In particular, the bottom is for one with The person held the stop system within arm reach. As a result, maintenance and / or repair work is greatly facilitated.

At least one individual strand element can be provided for holding and / or hitting a person, and at least one, in particular two, preferably three, particularly preferably four, further directly adjacent strand elements can be used as securing stops for securing the person. Here, the single strand element for holding and / or striking the person forms the holding path. The safety stops are preferably designed as fall arrest devices in order to avoid or intercept falling of the person if the person unintentionally releases himself from the individual strand element or the retaining stretch or the individual strand elements or the retaining stretch itself.

Preferably, the strand elements of the same, in particular first, network located immediately adjacent to the individual strand element or the retaining stretch form a first and a second securing stop. In particular, the first securing stop and / or the second securing stop, starting from an attachment point on a strand element, are assigned to the strand elements arranged laterally adjacent to the latter and aligned longitudinally of the strand element with the attachment point. Preferably, the first securing stop and / or the second securing stop is arranged on the left or right immediately adjacent to the single strand element with the attachment point or the holding path. Preferably, the attachment point is a location on a strand element to which a rolling device and / or a holding device for holding a person attached, in particular mounted, is. A third and / or a fourth securing stop can be realized with strand elements of another, in particular the second, network. Preferably, the third securing stop and / or the fourth securing stop are assigned, starting from a stop point on a string element, to string elements which are aligned directly laterally and are aligned transversely to the longitudinal orientation of the string element with the stop point. In particular, the strand elements for the third and / or fourth securing stop are arranged with respect to a stop point on the individual strand element and / or the holding line before and / or behind the stop point with regard to the longitudinal alignment of the individual strand element or the holding section. Preferably, the numbering of the securing stops as first, second, third and / or fourth securing stop is arbitrarily interchangeable.

Thus, in particular in a grid, up to four independent backup stops can be realized. As a result, the case and / or work safety of the held person is considerably improved. Preferably, a seat board, a seat belt, a standing cage, a car and / or a working platform is provided. In particular, a seat board, a seat belt, a standing cage, a car and / or a work platform attachable to a single strand element and / or between two, preferably immediately adjacent, first strand elements or second strand elements. As a result, the underside, in particular a central region of the underside, of the planar construction structure for the held person is particularly well attainable, in particular within arm reach.

According to a further and independently conceivable embodiment of the present invention, a distance stiffening means for spacing the first strand element from the second strand element is provided in an intersection region of a first strand element with a second strand element. By means of the spacer stiffening means, a contact of the first strand element and the second strand element in the crossing region can be avoided. As a result, the risk of undesired material fatigue and / or a material breakage in this area is significantly reduced. In addition, the spacer stiffening means serves to stiffen and / or stabilize the grid due to the fixed distance between the first and second strand element in the crossing region.

The emergence of a relative movement of the first network to the second network is thereby considerably reduced. Preferably, the first strand element and / or the second strand element is guided in a channel within the spacer stiffening means, in particular movably. Alternatively, the channel can firmly surround the strand element, in particular in a stationary manner, whereby slippage of the strand element by the spacer stiffening element can be avoided. In particular, if a strand element unintentionally dissolves at another point, an additional fall protection can be realized as a result.

Preferably, the spacer stiffening means has two, in particular by means of a sliding connection, clamp connection and / or dovetail connection, connectable and detachable components. As a result, the assembly of the distance stiffening means is facilitated. Preferably, in the separated state at least one channel, in particular two mutually transverse channels, for inserting the first strand element and / or the second strand element freely accessible. In particular, the first strand element and / or the second strand element can be inserted into a second component by means of open channel sides, wherein the channel sides open for insertion can be closed by means of the first component.

According to a development which is also conceivable independently and independently of the present invention, at least one securing element is arranged on the first strand element and / or the second strand element adjacent to the spacer stiffening means, that of the peripheral surface of the strand element assigned. In particular, the securing element is arranged stationarily on the strand element. The securing element serves to prevent slippage of the strand element by the spacer stiffening means. Preferably, the securing element has a larger diameter than the channel of the spacer stiffening means associated with the securing element for the strand element. If the strand element, in particular an end of the strand element, unintentionally releases, slippage of the strand element through the channel of the stabilization element and dropping of the strand element is prevented since the securing element abuts the outer surface of the stabilization element in the region of the channel opening. As a result, the case and / or work safety is further improved. In particular, a securing element is associated with the first strand element and / or the second strand element at each channel opening of the spacer stiffening means.

According to a further embodiment, two immediately adjacent first strand elements and / or two directly adjacent second strand elements from each other at a distance in the range between 1.5 m and 0.5 m, in particular of 1 m on. Preferably, the respective closest and, in particular parallel to each other running, strand elements are positioned in Armreichweite each other. Thus, a person without outside help or additional auxiliary structures in the longitudinal and transverse directions on the underside of the flat building structure, in particular in the horizontal direction, move.

The first strand elements and / or the second strand elements preferably extend from a first end of the planar structural structure to a second end of the planar structural structure opposite the first end. In particular, the strand elements run below the underside of the planar building structure. The ends of the strand elements can be fastened to an edge region of the planar construction structure, in particular to the outer supports.

According to a further embodiment, which is also conceivable independently and independently of the present invention, ends of the first strand elements and / or of the second strand elements are each assigned to a fastening element, wherein the fastening element, in particular a form-fitting, non-positively and / or materially bonded, attached to the flat structure. The fastener may be welded to the structural structure or releasably connected thereto. The releasable connection may be formed as a clamping connection. The fastening element can already be formed as an integral part of the planar building structure during the production of the flat building structure and / or the fastening element can be retrofitted as a separate component to existing flat building structures. In particular, the fastening element is assigned to a carrier of the planar structural structure, in particular on the underside of the planar structural structure. Preferably, the fastener has a U-shaped mounting portion for sliding on a flange, in particular a cross-sectional L-, T- or double-T-shaped carrier, the flat building structure. As a result, a simple fastening and dismounting of the fastening element can be realized. The legs of the attachment portion may be aligned in the mounted state substantially in the longitudinal direction, in particular parallel to the flat building structure. This results in a mounting or dismounting direction oriented essentially parallel to the horizontal. The risk of dropping a fastener of a, in particular substantially horizontally extending flange is thereby reduced. Preferably, two of the same strand element, in particular two opposite ends of the strand element, associated fasteners are braced against each other. In particular, openings of the two U-shaped attachment portions facing each other. In this case, a maximum voltage of 2 kN is provided for the bracing in particular. As a result, sagging and / or swinging of the strand elements can be significantly reduced.

On a first leg of the attachment portion may be arranged a web which extends transversely, in particular at right angles, to the plane of the first leg. Preferably, the web has a receptacle for securing one end of the strand element. Thus, the end of a strand element is easily connectable to the fastener. The end of the strand element may have a tensioning unit for tensioning the strand element. Preferably, the end of the strand element has a control device for controlling the compression of one end of the strand element.

According to a further embodiment which is also conceivable independently and independently of the present invention, at least one suspension means is provided between the ends of a single first strand element or second strand element, which can be fastened to it underneath the planar construction structure and to which the first strand element and / or the second Strand element is attached. The strand element can be hung in the suspension. In particular, the suspension means is attached to the underside, preferably in the middle region of the underside, of the flat building structure. Thus, a strand element, a net and / or the grid may be held and / or fastened in addition to a fastening of the ends of the strand elements with the suspension means. As a result, a higher stability can be realized. The risk of sagging and / or swinging of the stop system is thereby further reduced. In particular, the suspension device serves for deflecting the clamping forces acting on the fastening elements. The fasteners can be relieved by means of a suspension. Preferably, a secure hold of the strand elements can be realized exclusively by means of the fastening elements.

Preferably, the suspension means is positively, non-positively and / or materially fastened by means of a U-shaped suspension section on a flange, in particular a cross-sectional L-, T- or double-T-shaped support, the flat building structure fastened. The suspension means may be welded to the structure or be detachably connected thereto. In particular, the attachment can be realized with a clamping connection. As a result, a simple and quick installation and / or disassembly is feasible. The suspension means can already be formed as an integral part of the planar construction structure during the production of the flat building structure and / or the suspension means can be retrofitted as a separate component to existing flat building structures.

Preferably, the suspension means comprises a first suspension element and a second suspension element, which are braced against each other in the mounted state, in particular by means of a tensioning element. In particular, the first suspension element and the second suspension element each have a U-shaped suspension section. Preferably, the first and second Einhängemittel are arranged in the mounted state on a flange of a single T-beam and / or double-T-beam. The legs of the suspension sections can be aligned in the assembled state substantially parallel to the flat building structure. This results in a mounting or dismounting direction oriented essentially parallel to the horizontal. The risk of dropping a suspension element of a, in particular substantially horizontally extending, flange is thereby reduced. In particular, in the assembled state, openings of the two U-shaped suspension sections face one another. Preferably, a hanging element for holding the strand element is arranged on the tensioning element. In particular, in this case, a first end of the hanging element is attached to the clamping element and a remote from the first end second end of the hanging element is designed for receiving and holding a strand element.

According to a further embodiment, which is also conceivable independently and independently of the present invention, a working platform is provided, which is held displaceably on two first strand elements or two second strand elements as holding strands for the working platform. On the work platform, a person can kneel and / or stand to reach the bottom of the sheet structure. Preferably, the work platform of two people can be used simultaneously. The work platform can have dimensions of 1 mx 2 m. In particular, the work platform is foldable. As a result, the working platform is collapsible and / or unfolded, wherein folded together Condition the work platform is easier to transport. Preferably, a further first strand element or a further second strand element is provided as a securing strand between the retaining strands. The fuse string serves as a safety stop for one and / or two persons located on the work platform. Furthermore, the working platform can be assigned an adjusting device. The distance of the working platform to the underside of the flat building structure is adjustable by means of the adjusting device. Thus, a distance of the work platform from the underside of the sheet-metal structural structure can be realized, so that a person kneeling and / or standing on the work platform reaches all points of the underside in arm reach.

Of particular advantage is the use of a stop system according to the invention for maintenance and / or repair work on a bottom below a flat building structure, in particular a platform, for example in the offshore area, preferably in a wind turbine, a substation, a gas and / or a Erdölfördereinrichtung , Such platforms are several meters, in particular 25 m to 30 m, above the sea surface. This is the bottom, in particular a central region of the bottom, not easily accessible for necessary work. The, in particular retrofittable, stop system now allows secure access to any point on the underside of the flat building structure.

Fig. 1

eine schematische Ansicht einer Unterseite einer flächigen Baustruktur mit einem erfindungsgemäßen Anschlagsystem,

Fig. 2

eine Seitenansicht eines ersten Befestigungselementes für ein erfindungsgemäßes Anschlagsystem,

Fig. 3

eine geschnittene Seitenansicht des ersten Befestigungselementes nach Fig. 2 in einem an einem Träger montierten Zustand,

Fig. 4

eine Seitenansicht eines weiteren Befestigungselementes für ein erfindungsgemäßes Anschlagsystem,

Fig. 5

eine geschnittene Seitenansicht eines Abhängmittels für ein erfindungsgemäßes Anschlagsystem,

Fig. 6

eine perspektivische Ansicht einer schematischen Darstellung eines Distanzversteifungsmittels für ein erfindungsgemäßes Anschlagsystem,

Fig. 7

eine vergrößerte Darstellung des Distanzversteifungsmittels gemäß Fig. 5 in einem demontierten Zustand,

Fig. 8

eine perspektivische schematische Darstellung einer Arbeitsplattform für ein erfindungsgemäßes Anschlagsystem, und

Fig. 9

eine geschnittene Seitenansicht einer Verstelleinrichtung für eine Arbeitsplattform gemäß Fig. 8.

The invention will be explained in more detail with reference to the figures. Show it:

Fig. 1

a schematic view of an underside of a flat building structure with a stop system according to the invention,

Fig. 2

a side view of a first fastener for a stop system according to the invention,

Fig. 3

a sectional side view of the first fastener after Fig. 2 in a state mounted on a carrier,

Fig. 4

a side view of another fastener for a stop system according to the invention,

Fig. 5

a sectional side view of a suspension means for a stop system according to the invention,

Fig. 6

a perspective view of a schematic representation of a distance stiffening means for a stop system according to the invention,

Fig. 7

an enlarged view of the Distanzversteifungsmittels according to Fig. 5 in a disassembled state,

Fig. 8

a perspective schematic representation of a working platform for a stop system according to the invention, and

Fig. 9

a sectional side view of an adjustment for a working platform according to Fig. 8 ,

Fig. 1 shows a schematic view of a bottom 10 of a flat building structure 11 with a stop system 12 according to the invention. In the embodiment shown here, the planar building structure 11 is formed as a platform of a jacket structure having a plurality of carriers 13 on its underside. For better clarity, not all carriers 13 are provided with a reference numeral. The carriers 13 form an accessible from the bottom 10 supporting structure of the flat structural structure 11. Here, the carrier 13 are exemplified as a double-T-carrier.

The stop system 12 has first strand elements 14 and second strand elements 15. The strand elements 14, 15 are formed in the embodiment shown here as steel cables. Each individual strand element 14, 15 is usable as a holding line 16. For this purpose, a holding device, not shown, for example, a rolling device in a strand element 14, 15 can be suspended or batted. For better clarity, not all strand elements 14, 15 and retaining stretches 16 are provided with a reference numeral.

The first strand elements 14 on the one hand and the second strand elements 15 on the other hand are arranged side by side in the longitudinal direction. In this embodiment, the distance between two immediately adjacent first strand elements 14 and second strand elements 15 is in each case 1 m. The first strand elements 14 form a first network 17, while the second strand elements 15 form a second network 18. In the exemplary embodiment shown here, the first strand elements 14 extend at right angles to the second strand elements 15. Alternatively, the first strand elements may be oriented at an arbitrary angle transversely to the second strand elements 15. In an overlapping region of the first network 17 with the second network 18, a grid network 19 is formed. In this example, the grid network 19 has a grid with a mesh width of approximately 1 m × 1 m.

In the embodiment shown here, the first strand elements 14 and the second strand elements 15 are not each over the entire width or depth of distributed flat structure 11. In this way, a first subarea of the underside 10 of the planar building structure 11 is accessible only by means of the first network 17, a second subarea of the underside 10 of the planar building structure only by means of the second network 18 and a third subarea of the underside 10 of the planar building structure 11 by means of the grid 19 , A fourth subregion of the underside 10 of the planar building structure 11 is not accessible in this exemplary embodiment. Alternatively, however, first strand elements 14 and / or second strand elements 15 may also be arranged in the fourth subregion so that the entire underside 10 of the planar construction structure 11 is accessible by means of the first network 17 and / or the second network 18.

The strand elements 14, 15 are secured at their ends with fasteners not shown here on the carriers 13. In addition, a suspension element 20 is provided between the ends of a single strand element 14, 15 in the region of a carrier 13. In an intersection region 21 of a first strand element 14 with a second strand element 15, a spacer stiffening means not shown here is arranged. For better clarity, not all suspension devices 20 and intersection regions 21 are provided with a reference numeral. The fastener, the suspension means 20 and the spacer stiffening means are explained in more detail below.

Fig. 2 shows a side view of a first fastener 22 for a stop system 12 according to the invention. The fastener 22 has a substantially U-shaped mounting portion 23 with a first leg 24, a second leg 25 and an arranged between the legs 24, 25 stop ground 26. In this embodiment the first leg 24 is about 3.5 times as long as the second leg 25.

At a side remote from the second leg 25 side of the first leg 24, a web 27 is arranged. The web 27 is fixed at right angles to the plane of the first leg 24 on the first leg 24. Here, the web 27 is welded to the leg 24. The plane of the web 27 is aligned parallel to the longitudinal orientation of the first leg 24.

On a side facing away from the stop base 16 side of the web 27, a receptacle 28 for fixing an end 29 of a strand element 14, 15 is arranged. The end 29 of the first strand element 14 or of the second strand element 15 is pressed in a strand piece 33. The strand end piece 33 is held with the receptacle 28 on the fastening element 22.

Fig. 3 is a sectional side view of the first fastener 22 after Fig. 2 in a state mounted on a carrier 13, wherein the Fastening element 22 is associated with a first end 29 of a strand element 14. Alternatively, the strand element 14 may be formed as a strand element 15. The fastening element 22 is pushed onto a flange 30 of a carrier 13. The U-shaped attachment portion 23 engages around a free end of the flange 30. In this way, a positive and non-positive, namely in this embodiment, clamping, connection between the carrier 13 and the fastener 22 is made. The plate-like legs 24, 25 prevent in the pushed or mounted state, a rotation of the fastener 22 about an axis parallel to the longitudinal direction of the carrier 13 axis.

Between the outside of the flange 30 and the inside of the mounting portion 23 and the legs 24, 25 and the stopper base 26 a rubberized anti-slip mat not shown here is arranged. As a result, the clamping effect is increased, reduces the risk of slippage of the fastener and prevents damage to a coating of the flange 30.

The first end 29 of the strand element 14 is pressed into or with a separate strand piece 33. A remote from the first end 29 second end 31 of the strand element 14 is pressed into or with a further strand section 33. To control the compression of the first end 29 and the second end 31, two control rings 32 are provided with which a visual inspection of the compression of the strand element 14 is feasible. The visual inspection is carried out by controlling the distance of the control rings 32 in each case an associated strand end piece 33, wherein the two strand cutting pieces 33 are arranged facing away from each other. In a proper compression, the control rings 32 abut against the respectively associated, nearest strand end piece 33. The control rings 32 are fixedly attached to the strand element 14. Solves or loosens the compression increases the distance between the control ring 32 and the respectively associated, nearest strand tail 33. This is a loosening or loosening of the compression and thus the risk of detachment of the first end 29 or the second end 31 of the strand element 14 early recognizable. In the embodiment shown here, the second end 31 or the second end 29 associated Strandendstück 33 has a clamping unit 34 for tensioning the strand element 14. The clamping unit 34 or the second end 31 are assigned to a further fastening element 22, not shown here. Here, the further fastening element 22 is mirror-symmetrical to that in the Fig. 3 aligned fastener 22 aligned. By means of the strand element 14, the two fastening means 22 associated with the ends 29, 31 are braced against one another. The risk of unintentional release of a fastener 22 or the strand element 14 is thus largely avoided.

Fig. 4 is a side view of another fastener 61 for a stop system 12 according to the invention can be seen. The fastener 61 has a plate member 62 and a profile member 63. The plate member 63 is formed integrally and plate-like. The plate element 63 can be cheaply cut from a plate material or solid material, such as a steel plate. Next, the plate member 63 on an opening 64. The opening 64 is formed in this embodiment as a hole. The opening 64 is used to attach a receptacle 28 not shown here for attaching and clamping a strand element 14, 15. Furthermore, the plate element 62 has a groove-like cutout 65. In the assembled state, the groove-like cutout 64 is arranged above the opening 64. In the cutout 64, the profile element 63 is at least partially included.

The profile element 63 is formed in this embodiment as a U-shaped plate with two equal-length legs 66, 67. Alternatively, the legs 66, 67 may have different lengths. For example, the leg 67 may be longer than the leg 66. In the embodiment shown here, the legs 66, 67 protrude beyond the plate member 62. The profile element 63 is fixedly connected to the plate member 62, namely welded.

The fastening element 61 can be pushed with the profile element 63 onto a flange 30 of a carrier 13, not shown here. Here, the profile element 63 prevents in the pushed or assembled state, a rotation of the fastening element 61 about an axis parallel to the longitudinal direction of the carrier 13 axis.

Fig. 5 shows a sectional side view of a suspension means 20 for a stop system 12 according to the invention. The suspension means 20 is attached to a flange 30 of a carrier 13. The suspension device has a first suspension element 35 and a second suspension element 36. The first suspension element 35 is pushed onto a first free flange end 37 of the flange 30 and the second suspension element 36 is pushed or clamped onto a second free flange end 38 of the flange 30 facing away from the first free flange end 37.

The suspension elements 35, 36 each have a substantially U-shaped suspension portion 39 and 40, respectively. The suspension elements 35, 36 are of identical construction and each have a first leg 41, a second leg 42 and a stop bottom 43. In this embodiment, the first leg 41 is about 5 times as long as the second leg 42. Between the outside of the flange 30 and the inside of the suspension sections 39, 40 a rubberized anti-slip mat (not shown here) is arranged.

The free end of the first leg 41 is formed as an angle, wherein an angled surface 44 is arranged at right angles to the side facing away from the second leg 42 side of the first leg 41. In the illustrated assembled state, the angled surfaces 44 of the two suspension elements 35, 36 face each other.

The suspension elements 35, 36 are connected to each other by means of a clamping element 45 and braced against each other. In this embodiment, the clamping element 45 comprises a screw 46, which is performed by bores in the angled surfaces 44 and secured by a nut 46.

On the clamping element 45, a hanging element 48 is arranged. In this embodiment, the hanger member 48 is attached at a first end to the screw 46 in which the screw 46 is passed through a bore in the hanger member 48. At a second end of the hanging element 48 facing away from the first end, a strand element 14 is held by the hanging element 48. Alternatively, of course, a strand element 15 can be held by the hanging element 48 or the suspension element 20.

Fig. 6 is a perspective view of a schematic representation of a Distanzversteifungsmittels 49 for a stop system 12 according to the invention can be seen. The spacer stiffening means 49 is arranged in an intersection region 21 of a first strand element 14 and a second strand element 15. In the embodiment shown here, the spacer stiffener 49 has a substantially rectangular basic shape.

The spacer stiffening means 21 has a first channel 50 and a second channel 51. While the first strand element 14 is guided through the first channel 50, the second strand element 15 is guided through the second channel 51. Alternatively, the first strand element 14 can also be guided through the first channel 50 through the second channel 51 and the second strand element 15.

The channels 50, 51 extend in the longitudinal direction of the respective strand element 14, 15, wherein the channels 50, 51 transversely, in this embodiment, are oriented at right angles to each other. Furthermore, the channels 50, 51 are spaced apart from each other. The distance between the channels 50, 51 to each other corresponds to the distance between the strand elements 14, 15 and the network planes of the networks 17, 18 to each other.

On the strand element 14, a securing element 52 is arranged adjacent to the spacer stiffening means 49. The securing element 52 is fixedly connected to the strand element 14 and has a diameter that is greater than the diameter of the channel 50. Alternatively to the embodiment shown here the strand element 14 may each have a securing element 52 on the two opposite sides of the stabilizing element 49 or the ends of the channel 50 facing away from each other and outside the stabilizing element 49. In addition or as an alternative, the strand element 15 can also have a securing element 52 on the two mutually remote sides of the stabilizing element 49 or the ends of the channel 51 facing away from each other and outside the stabilizing element 49.

Alternatively, the control ring 32 according to Fig. 3 be formed as a fuse element 52. If, in the region of the first end 29 and / or the second end 31 of the strand element 14, a strand element 15 extending transversely to the strand element 14 and a spacer stiffening element 49 is provided in its intersection region 21, the strand element 14 will become completely detached from the first end 29 or second end 31 of the compression with the Stranggendstück 33 by means of the fuse element 52 formed as control ring 32 by striking the Distanzversteifungsmittel 49 caught or secured. In particular, the through-slit of a completely dissolved from the compression strand element 14 at a distance of, for example, the strand element 15 to the first end 29 or second end 31 of the strand element 14 from about 1 m to about 1 m can be limited.

Fig. 7 shows an enlarged view of the Distanzversteifungsmittels 49 according to Fig. 5 in a disassembled state. The spacer stiffener 49 has a first component 53 and a second component 54. The components 53, 54 are in the embodiment shown here by means of a dovetail connection 55 connected to each other and detachable from each other. For this purpose, the component 53 has a dovetail groove 56 and the component 54 has a dovetail web 57 corresponding to the dovetail groove 56.

The dovetail web 57 is arranged centrally on a plate 58. Transverse to the dovetail web 57, the channel 51 is groove-shaped, wherein the channel 51 penetrates into the plate 58. In the longitudinal direction of the dovetail web 57, the channel 50 is centrally formed in this groove-shaped. When telescoping the components 53, 54 a free side of the channel 51 is closed by means of a surface 59 of the first component and a free side of the channel 50 by means of a surface 60 of the dovetail groove 56.

Furthermore, in this embodiment, a spacer not shown here is provided. The spacer is formed cross-shaped and can be introduced between the first channel 50 and the second channel 51 in the dovetail web 57. During assembly of the spacer stiffening means 49, first a strand element 15 is inserted into the second channel 51 of the second component 54.

Then the spacer is inserted into the dovetail web 57. Subsequently, the strand element 14 is inserted onto the spacer and into the first channel 50. Thereafter, the first component 53 is pushed onto the second component 54. By means of the spacer, a contact of the strand elements 14, 15 within the Distanzversteifungsmittels 49 reliably avoided.

Fig. 8 a perspective schematic representation of a working platform 68 for a stop system 12 according to the invention. The working platform 68 has a platform floor 69. The platform floor is formed rectangular in this embodiment. Here, the width of the working platform 68 or of the platform floor is 2 m and the depth is 1 m. The working platform 68 or the platform floor 69 can be folded in the area of the dashed line 70. For this purpose, a hinge not shown here is provided in the region of the line 70.

Starting from the four corners of the platform floor 69 extends in each case a rope 71. At the free ends of the ropes 71 is in each case a rolling device 72. The rolling devices 72 are not shown here in detail strand elements 14, 15 can be stopped. Thus, the working platform 68 in the mounted state along the longitudinal direction of the first strand elements 14 or the second strand elements 15 is displaceable. Here, the strand elements serve 14 and 15, where the rolling means 72 are posted as a holding strand. In the mounted state, another strand element 14 or 15 is provided between two strand elements 14 and 15 serving as retaining strands. This further strand element 14 or 15 serves as a safety strand to which a person on the work platform 68 hangs for securing purposes. In addition, a person located on the working platform 68 is suspended from one or both strand sections 14 and 15 serving as holding strands.

Furthermore, 68 side walls 73 are arranged in the edge region of the working platform. The side walls 73 surround the platform floor 69 and extend transversely, in this embodiment, at right angles, to the platform floor 69. The side walls 73 extend from the platform floor 68 to about half the height of the cables 71. By means of the side walls 73, the Reduces risk that fall, for example, in use on the work platform 68 stored materials unintentionally from the work platform 68 down.

Fig. 9 shows a sectional side view of an adjusting device 74 for a working platform 68 according to Fig. 8 , The adjusting device 74 is in each case assigned to a free end of a cable 71. Furthermore, the adjusting device 74 has a telescopic mechanism 75, which comprises a telescopic rod 76 and a telescopic tube 77. Here, the telescopic rod 76 is guided at least partially within the telescopic tube 77. The telescopic rod 76 has several longitudinally successively arranged holes 78. The telescopic tube 77 has a single hole 79. Thus, various positions of the telescopic rod 76 relative to the telescopic tube 76 can be fixed, in which a bolt 80 through the hole 79 of the telescopic tube 76 and a corresponding hole 78 of the telescopic rod 76 is guided.

Next, a securing device 81 is provided. The securing device 81 has a cable, one end of which is fastened to the telescopic tube 77 and whose second end remote from the one end is fastened to the strand element 14. Alternatively, instead of the strand element 14, a strand element 15 may be provided. Should the connection between the telescopic tube 77 and the telescopic rod 76 unintentionally release, a crash by the securing device 81 is prevented.

• Die Unterseite 10 einer flächigen Baustruktur 11, wie beispielsweise die Plattform einer Jacket-Struktur zum Tragen einer Offshore-Windenergieanlage, muss für Wartungs - und Reparaturarbeiten vollständig zugänglich sein. Das erfindungsgemäße Anschlagsystem 12 ermöglicht einen flächendeckenden Zugang zu der Unterseite einer solchen Plattform.

The invention will be described below with reference to FIG Fig. 1 to 9 explained in more detail:

• The underside 10 of a sheet-like building structure 11, such as the platform of a jacket structure for supporting an offshore wind turbine, must be fully accessible for maintenance and repair work. The stopper system 12 according to the invention enables a comprehensive access to the underside of such a platform.

For this purpose, the stop system 12 can already be mounted in the production of the flat building structure or retrofitted to an existing building structure.

A first network 17 or a second network 18 is realized by means of strand elements 14, 15, the strand elements 14, 15 being arranged at a distance of approximately 10 cm below the underside 10 of the planar construction structure 11. Due to the distance of about 1 m of the immediately adjacent strand elements 14 and 15 to each other, a person, such as an industrial climber or height worker, conveniently and safely from a strand element 14, 15 to an immediately adjacent strand element 14, 15 change. In this case, the person hangs by means of a suitable device, such as a rolling device, in a strand element 14, 15 a. The person can move along the respective holding path 16, formed by a single or two directly adjacent and parallel to each other running strand element 14 and 15, below the bottom 10 of the sheet-metal building structure 11 in the horizontal direction. Thus, the covered by the networks 17, 18 and the grid 19 areas of the underside are accessible for maintenance and repair.

In this case, a strand element 14, 15 with two fastening elements 22 is fastened to the planar building structure 11 in each case. The mutually remote ends of the strand element 14, 15 and this associated Stranggendstücke 33 are each firmly connected to a fastener 22. The fastening elements 22 are in turn fastened to a respective carrier 13. In the embodiment shown here, the fastening elements 22 are releasably, namely by sliding on the flange 30, fixed to the carrier 13. Alternatively, the fastening elements 22 can also be connected, for example welded, as an integral component with the flat structural frame 11 and its carrier 11.

The strand element 14, 15 between the two associated fastening elements 22 is tensioned in this embodiment with a maximum tension of 2 kN. As a result, the two fastening elements 22 at the ends 29 of a single strand element 14, 15 braced against each other and inadvertent release of the fasteners 22 of the carriers 13 is reliably avoided. In addition, such a biased strand element 14, 15 allows a secure striking a person. A sagging or swinging of the strand elements 14, 15 is thereby significantly reduced.

For a holding line 16, at least one further strand element 14 or 15 is available per net 17, 18 as a securing stop. In this embodiment, at least two further strand elements 14 and 15 are available as securing stops per net 17, 18. Serves, for example, a single strand element 14, 15 as a holding section 16, then the laterally immediately adjacent to the holding path 16 and this extending in the longitudinal direction of strand elements 14 and 15 are used as two independent safety stops.

In the area of the grid 19, in addition or as an alternative, the line elements 14 and 15, which are directly adjacent to the holding line 16 and run transversely to the holding line 16, can be used as independent securing stops.

Thus, with respect to an attachment point on a support path 16 up to four independent backup stops can be realized. With regard to the attachment point and the longitudinal alignment of the retaining section 16, the securing stops are arranged to the left of, to the right of, in front of and / or behind the attachment point. Thus, a multiple, in this embodiment, up to four times redundant backup can be realized.

The securing of a person who is stricken on the stop system 12 is further increased by one or more securing elements 52. If a strand element 14, 15 breaks or an end of a strand element 14, 15 is released, slipping occurs the strand element 14, 15 is prevented by the spacer stiffening means 49 by means of a securing element 52 or a control ring 32 designed as a securing element 52. The securing element 52 fixedly attached to the circumferential surface of the strand element 14, 15 abuts the outside of the spacer stiffening means 49 in such a case. Due to the larger diameter of the securing element 52 compared to the diameter of the respective channel 50, 51, slippage is reliably prevented.

In addition, the Distanzversteifungsmittel 49 serves to stabilize the grid network 19. The freedom of movement of the strand elements 14 relative to the strand elements 15 is considerably reduced by means of Distanzversteifungsmittel 49. In addition, the Distanzversteifungsmittel 49 prevents contact of the strand elements 14, 15 in the crossing region 21. This prevents wear due to friction and thus the risk of material fatigue in the crossing region 21.

By means of the suspension means 20 sagging of a strand element 14, 15 and the grid 19 is reduced. The carrier 13 extending in the region of the underside 10 can be used to connect to the carriers 13 transversely or longitudinally extending strand elements 14, 15 with the suspension element 20. Here, the suspension means 20 are attached to the carriers 13. Due to the reduction of the sagging of the strand element 14, 15 or of the grid 19, the forces acting on the ends of the strand elements 14, 15 can be influenced in such a way that in the region of the ends of the strand elements 14, 15, the strand end piece 33 and the fastening elements 22 a relief is reachable.

By means of the stopper system 12 according to the invention, a bottom 10 of a flat building structure is also accessible at high altitudes, for example 25 m to 30 m above a surface, partially or completely and in a secure manner. For this purpose, a rolling device, a seat board, a standing cage, a car, a work bag and / or a working platform 68 to one or between two strand elements 14, 15 are struck. <b><u> List of Reference Numerals: </ u></b> 10 bottom 49 Distance stiffener 11 Flat construction structure 50 First channel 12 stop system 51 Second channel 13 carrier 52 fuse element 14 First strand element 53 First component 15 Second strand element 54 Second component 16 maintaining section 55 dovetail joint 17 First network 56 Dovetail groove 18 Second network 57 Dovetail web 19 grid 58 plate 20 Abhängmittel 59 area 21 crossing area 60 area 22 fastener 61 fastener 23 attachment section 62 panel member 24 First leg 63 profile element 25 Second thigh 64 breakthrough 26 stop reason 65 neckline 27 web 66 leg 28 admission 67 leg 29 First end 68 working platform 30 flange 69 platform floor 31 Second end 70 line 32 control ring 71 rope 33 Strangendstück 72 rolling device 34 clamping unit 73 Side wall 35 First suspension element 74 adjustment 36 Second suspension element 75 telescopic mechanism 37 First free flange end 76 telescopic rod 38 Second free flange end 77 telescopic tube 39 Suspension section 78 hole 40 Suspension section 79 hole 41 First leg 80 bolt 42 Second thigh 81 safety device 43 stop reason 44 angle surface 45 clamping element 46 screw 47 mother 48 wall unit

Claims (13)

Stop system, in particular for platforms in the offshore sector, for holding and securing at least one person located at a surface below a flat building structure (11) with at least one strand element (14, 15), characterized in that a plurality of side by side and spaced apart first strand elements (14) form a first network (17), wherein the first strand elements (14) extend below and from one side of the planar construction structure (11) to a further side facing away from the one side of the planar construction structure (11) and the first network (17) provides accessibility to at least part of a central region of a lower side (10) of the flat building structure (11) for inspection, maintenance and / or repair of the lower side (10) by a person. An abutment system according to claim 1, characterized in that a plurality of juxtaposed and spaced apart second strand elements (15) form a second network (18), wherein the second strand elements below and from one side of the planar building structure (11) facing away from the one side extend further side of the sheet-like structure (11), wherein preferably the second strand elements (15) for forming a grid (19) transversely, in particular at right angles, to the first strand elements (14) are aligned. Stop system according to claim 1 or 2, characterized in that the first network (17) and the second network (18) are spaced apart, in particular the distance between the first network (17) and the second network (18) is less than 20 mm , preferably less than 15 mm, particularly preferably in the range of 5 mm to 15 mm, preferably the distance between the first network (17) and / or the second network (18) on the one hand and the planar structure (11) on the other hand less than 1 m, preferably less than 50 cm, more preferably at least 10 cm. Stop system according to one of the preceding claims, characterized in that at least one individual strand element (14, 15) is provided for holding and / or striking a person and at least one, in particular two, preferably three, more preferably four, further directly adjacent strand elements (14 , 15) are usable as securing stops for securing the person, preferably a seat board or a seat belt on a single strand element (14, 15) and / or between two first strand elements (14) or two second strand elements (15) can be fastened. Stop system according to one of claims 2 to 4, characterized in that in a crossing region (21) of a first strand element (14) with a second strand element (15) has a spacer stiffening means (49) for spacing the first strand element (14) from the second strand element (21). 15) is provided, preferably, the first strand element (14) and / or the second strand element (15) in a channel (50, 51) within the Distanzversteifungsmittels (49) out. An abutment system according to claim 5, characterized in that the spacer stiffening means (49) has two, in particular by means of a sliding connection, clamp connection and / or dovetail connection, connectable and detachable components (53, 54), preferably in the disconnected state, at least one channel (50, 51), in particular two mutually transverse channels (50, 51), for inserting the first strand element (14) and / or the second strand element (15) are freely accessible. Stop system according to one of claims 5 or 6, characterized in that the first strand element (14) and / or the second strand element (15) adjacent to the Distanzversteifungsmittel (49) at least one, in particular stationary on the strand element (14, 15) arranged, securing element ( 52), which is attached to the peripheral surface of the strand element (14, 15), wherein preferably the securing element (52) has a larger diameter than that of the strand element (14, 15) with the securing element (52) associated channel (50, 51) of the spacer stiffening means (49). Stop system according to one of the preceding claims, characterized in that two mutually adjacent first strand elements (14) and / or two mutually immediately adjacent second strand elements (15) from each other a distance in the range between 1.5 m and 0.5 m, in particular of 1 m, wherein preferably the first strand elements (14) and / or the second strand elements (15) are aligned parallel to one another and / or to the planar building structure (11). Stop system according to one of the preceding claims, characterized in that ends (29) of the first strand elements (14) and / or the second strand elements (15) are each associated with a fastening element (22, 61) which, in particular form-fit, non-positively and / or cohesively fastened to the two-dimensional structural structure (11), wherein preferably the fastening element (22, 61) has a U-shaped fastening section (23) for sliding onto a flange (30), in particular an L, T or double cross section. T-shaped carrier (13), the flat structural structure (11), wherein preferably the legs (24, 25) of the fastening portion (23) in the mounted state substantially in the longitudinal direction, in particular parallel to the flat structural structure (11) are aligned and / or two the same strand element (14, 15) associated fastening elements (22, 61) against each other, in particular with a maximum tension of 2 kN are braced. Stop system according to claim 9, characterized in that on a first leg (24) of the attachment portion (23) a web (27) is arranged, which extends transversely, in particular at right angles, to the plane of the first leg (24), wherein preferably the web (27) has a receptacle (28) for fixing an end (29) of the strand element (14, 15). Stop system according to one of the preceding claims, characterized in that at least one between the ends (29) of a single first strand element (14) or second strand element (15) arranged dependency means (20) is provided below the flat building structure (11) at this is fastened and to which the first strand element (14) and / or the second strand element (15) can be fastened, wherein preferably the suspension means (20) positively, non-positively and / or materially by means of a U-shaped suspension portion (39, 40) on a Flange (37, 38), in particular of a cross-section L-, T- or double-T-shaped support, the planar structure (11) can be fastened, wherein preferably the suspension means (20) a first suspension element (35) and a second suspension element (36), which in the assembled state, in particular by means of a clamping element (45), are braced against each other, preferably on the clamping element (45) H ngeelement (48) for holding said strand element (14, 15) is arranged. Stop system according to one of the preceding claims, characterized in that a, in particular collapsible, working platform (68) is provided, which is held displaceably on two first strand elements (14) or two second strand elements (15) as holding strands, wherein preferably between the support strands another first strand element (14) or second strand element (15) is provided as a securing strand and / or the distance between the working platform and the underside (10) of the planar construction structure (11) is adjustable by means of an adjusting device (74). Use of a stop system (12) according to one of the preceding claims for maintenance and / or repair work on a lower side (10) below a flat building structure (11), in particular a platform, in the offshore area, preferably in a wind turbine, a substation, a Gas and / or a Erdölördereinrichtung.

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