EP3666473B1 - Optimiertes rückhaltesystem - Google Patents

Optimiertes rückhaltesystem Download PDF

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Publication number
EP3666473B1
EP3666473B1 EP19212597.9A EP19212597A EP3666473B1 EP 3666473 B1 EP3666473 B1 EP 3666473B1 EP 19212597 A EP19212597 A EP 19212597A EP 3666473 B1 EP3666473 B1 EP 3666473B1
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EP
European Patent Office
Prior art keywords
tool
assembly
cord
fall
assembly according
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EP19212597.9A
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English (en)
French (fr)
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EP3666473A1 (de
Inventor
Régis BONNET
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Georges Renault SAS
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Georges Renault SAS
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Publication of EP3666473A1 publication Critical patent/EP3666473A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H3/00—Storage means or arrangements for workshops facilitating access to, or handling of, work tools or instruments

Definitions

  • the field of the invention is that of secure retaining devices for portable tools.
  • Portable tools such as screwdrivers, drills, riveters or the like, are commonly used by operators to carry out work at a height of several meters.
  • the portable tools are connected to retaining devices so as to retain the tool in the event of a fall if the operator inadvertently releases the tool, makes a false movement or mishandling.
  • Such restraint devices ensure that the tool does not fall to the ground and deteriorate, and that the tool does not strike a machine or a person below the operator's intervention area.
  • the document US-A1-2013062498 describes a retaining device comprising a mooring ring fixed rigidly to the tool by means of a fixing lug.
  • a fixed structure such as scaffolding, a support arm or the like
  • a safety cord one end of which is fixed to the fixed structure. and the other end is fixed to the mooring ring integral with the tool.
  • the document US-A1-20180132600 describes a device according to the preamble of claim 1.
  • the tool is connected to a fixed structure by means of a safety cord, one end of which is fixed to the fixed structure and the other end is attached to the mooring loop attached to the tool.
  • the document US-A1-2018/0084895 describes a retaining device comprising a strap, carrying a mooring ring, intended to be wound around a tool.
  • the tool is connected to a fixed structure by means of a safety cord, one end of which is fixed to the fixed structure and the other end is fixed to the ring mooring attached to the tool.
  • Retaining devices comprising a sheet fixed to the tool and folded to form a mooring point.
  • the tool is connected to a fixed structure by means of a safety cord, one end of which is fixed to the fixed structure and the other end is fixed to the point of mooring attached to the tool.
  • the retaining device In the worst case, if the retaining device is insufficiently sized, it may break under the effect of the forces caused by the fall of the tool so that the fall of the latter to the ground cannot be avoided, leading to a significant risk of irreversibly damaging the tool and/or its environment and causing injury to a person located under the work area.
  • Such a technique makes it possible to cushion the fall of a tool to a certain extent and to reduce the forces absorbed by the latter during its fall.
  • the spring used is however relatively heavy.
  • the small fixing brackets may lack robustness.
  • none of the retention devices of the prior art makes it possible to give a predetermined orientation to a tool at the end of its fall, in particular to limit its bulk with respect to its environment during or at the end of its fall. .
  • Portable tool retainers can thus be further improved.
  • the object of the invention is in particular to provide an effective solution to at least some of these various problems.
  • an object of the invention is to provide a portable tool retaining device which is robust.
  • the object of the invention is to provide such a retaining device which makes it possible to preserve the integrity of a portable tool during its fall.
  • Another object of the invention is, according to at least one embodiment, to provide such a retaining device which makes it possible to give a privileged orientation to a tool during the fall.
  • Another object of the invention is, according to at least one embodiment, to provide such a retaining device which makes it possible to indicate that a tool must undergo an overhaul if the forces it has undergone during a drop exceeds a certain threshold.
  • Another object of the invention is, according to at least one embodiment, to provide such a retaining device which is light.
  • Another object of the invention is, according to at least one embodiment, to provide such a retaining device which is simple in design and/or economical.
  • the invention proposes a retaining assembly capable of being fixed to a portable tool to allow the connection of a safety cord to said tool.
  • the invention proposes a particularly robust retaining assembly, in particular due to the implementation of the fixing plates which are sized to withstand the forces due to the fall of a portable tool intended to be secured to the retaining assembly. .
  • the zone located below an intervention zone at height is thus made safe so that the risk of damaging equipment which might be there or of injuring people who might move there is very low.
  • Such a retaining assembly can in particular allow the secure retention of heavy portable tools having a weight of between 7 and 30 kg.
  • said first and second flexible securing elements are made of a technical textile material.
  • a technical textile is a material made of synthetic or natural fibers with specific properties allowing it to be particularly suitable for a given use.
  • the technical textile chosen will in particular have mechanical properties allowing it to resist the forces caused by the fall of a tool secured to a retaining assembly according to the invention.
  • a technical textile has the advantage of being light. In addition, it can be dimensioned to support significant efforts without significant impact on its weight.
  • the flexible fastening elements made of technical textile material thus make it possible to guarantee robust restraint while keeping the overall weight of the restraint assembly which remains low.
  • a restraint assembly according to the invention thus has the advantage of being very robust while remaining light.
  • the lengths of said first and second securing elements are chosen in order to place said anchoring element with respect to the center of gravity of said tool to which said assembly is intended to be fixed so as to give a predetermined orientation to said tool when it is suspended from said cord by said retaining assembly.
  • the lengths of said first and second securing elements are chosen so as to place said anchoring element along a vertical axis passing through the center of gravity of said tool to which said assembly is intended to be fixed when said assembly is held essentially horizontally.
  • the lengths of said first and second securing elements are chosen so as to place said anchoring element along a vertical axis located on one side or the other of the center of gravity of said tool at which said assembly is intended to be fixed when said assembly is held essentially horizontally.
  • said predetermined orientation is such that the projection on the ground of said tool to which said assembly is intended to be fixed has the smallest possible surface.
  • the lengths of said first and second securing elements are determined so that the largest dimension of said tool to which said assembly is intended to be fixed extends essentially parallel to the longitudinal axis of the cord when said assembly is suspended from said cord.
  • the suspended tool then extends such that its longitudinal axis is essentially vertical.
  • the lengths of said first and second fastening elements are determined so that the head of said tool to which said assembly is intended to be fixed is oriented downwards when said assembly is suspended from said cord.
  • an assembly according to the invention comprises damping means capable of damping the fall of a tool secured to said assembly suspended from said cord.
  • an assembly according to the invention comprises indicator means indicating that a tool fixed to said retaining assembly suspended from said cord has suffered a fall inducing on said tool a force reaching a predetermined threshold beyond which said tool must be revised.
  • At least one of said first and second securing elements is elastically deformable.
  • At least one of said first and second securing elements is plastically deformable beyond said threshold.
  • the forces undergone by the latter reach or exceed a predetermined force threshold, at least one of the securing elements deforms irreversibly. An operator can then easily identify visually that a tool has undergone such forces during its fall that it must be repaired.
  • At least one of said first and second fixing plates is plastically deformable beyond said threshold.
  • the forces undergone by the latter reach or exceed a predetermined force threshold, at least one of the fixing plates deforms irreversibly. An operator can then easily identify visually that a tool has undergone such forces during its fall that it must be repaired.
  • each of said holes is surrounded by an eyelet and said damping end is made of an elastically deformable material.
  • said holes and said damping end are dimensioned such that said predetermined force threshold undergone by said tool during a fall beyond which said tool must be revised is reached after said end d damping has passed a predetermined minimum number of holes.
  • This solution also makes it possible to visualize if a tool has undergone during a fall a force exceeding a force threshold beyond which it must be repaired by looking at the number of holes through which the damping end has passed during a fall.
  • such a restraint assembly 1 comprises a first 10 and a second 11 fixing plates.
  • fixing plates 10, 11 are suitable for being secured to a portable tool by enclosing the body of the latter, as will emerge more clearly subsequently.
  • These fixing plates 10, 11 are preferably made of a metallic material such as, for example, steel or the like. They could alternatively be made of a plastic material, in particular of a composite material.
  • the fixing plates 10, 11 will be sized to resist the forces due to the fall over a predetermined height of a portable tool secured to the retaining assembly.
  • the fixing plates 10, 11 here essentially have the shape of a "U”, that is to say a shape having an open profile, essentially like a fork, to facilitate the installation of the plates around the body of a portable tool. They could have another shape, in particular a closed contour of essentially rectangular shape, which nevertheless makes them less easy to put in place on the body of a portable tool.
  • the fixing plates 10, 11 are traversed by holes 101, 111 allowing the passage of fixing screws 13 in order to secure the fixing plates 10, 11 to the body of a portable tool.
  • These screws 13 will also be sized to withstand the forces due to the fall over a predetermined height of a portable tool secured to the retaining assembly.
  • the restraint assembly comprises an anchoring element here taking the form of a ring 14. It could alternatively be a hook or the like.
  • such a ring 14 is capable of allowing the attachment of a safety cord also called retaining cord.
  • a safety cord also called retaining cord.
  • the ring 14 is crossed by a hole 142.
  • Such a safety cord makes it possible to hang up the retaining assembly, and the tool which is secured thereto, to a fixed structure located at height such as for example a scaffolding, a gantry, a nacelle or other.
  • This ring 14 is preferably made of a metallic material such as steel or the like. It may alternatively be made of a plastic material, in particular of a composite material.
  • the ring 14 will be sized to resist the forces due to the fall over a predetermined height of a portable tool secured to the retaining assembly.
  • the retaining assembly further comprises a first 15 and a second 16 flexible securing elements making it possible to make the ring 14 integral with the fixing plates 10, 11.
  • each securing element 15, 16 is connected at one of its ends to the ring 14 and at the other of its ends respectively to the first fixing plate 10 and to the second fixing plate 11.
  • the ring 14 therefore has two slots 140 with a closed contour allowing the introduction of the corresponding end of the securing elements 15, 16 and delimiting the fixing rods 141.
  • the attachment of an attachment element 15, 16 to the ring 14 is obtained by introducing the corresponding first free end 151, 161 of the fastening element 15, 16 into the corresponding slot 140 of the ring 14.
  • the free end 151, 161 is then wound around the fixing rod 141 to form a loop around it.
  • the free end 151, 161 is secured to the body 150, 160 of the corresponding securing element 15, 16.
  • This connection is preferably made by means of seams.
  • any other suitable fixing solution can be implemented, such as welding or gluing in particular.
  • each attachment element 15, 16 and the ring 14 is dimensioned such that it is irreversible and to resist the forces due to the fall over a predetermined height of a portable tool secured to the retaining assembly. .
  • connection between each securing element 15, 16 and the ring 14 essentially constitutes a pivot connection, the axis of which essentially coincides with the longitudinal axis of the corresponding fixing rod 141.
  • the fixing plates 10, 11 are each traversed by a slot 102, 112 with a closed contour allowing the introduction of the corresponding end of the securing elements 15, 16 and delimiting the fixing rods 103, 113.
  • the fastening of a fastening element 15, 16 to a fixing plate 10, 11 is respectively obtained by introducing the corresponding second free end 152, 162 of the fastening element 15, 16 into the slot 102, 112 corresponding to a fixing plate 10, 11.
  • the free end 152, 162 is then wrapped around the fixing rod 103, 113 to form a loop around the latter.
  • the free end 152, 162 is secured to the body 150, 160 of the corresponding securing element 15, 16.
  • This connection is preferably made by means of seams.
  • any other suitable fixing solution can be implemented, such as welding or gluing in particular.
  • each attachment element 15, 16 and each fixing plate 10, 11 is dimensioned such that it is irreversible and to withstand the forces due to the fall over a predetermined height of a portable tool secured to the restraint assembly.
  • connection between each securing element 15, 16 and each fixing plate 10, 11 thus essentially constitutes a pivot connection whose axis is essentially coincides with the longitudinal axis of the corresponding fixing rod 103, 113.
  • the securing elements 15, 16 are preferably made of a technical textile material.
  • a technical textile is a material made of synthetic or natural fibers with specific properties allowing it to be particularly suitable for a given use.
  • the technical textile chosen will in particular have mechanical properties allowing it to resist the forces caused by the fall of a tool secured to a retaining assembly according to the invention.
  • the technical textile may for example be a knit, a fabric, a non-woven, a rope, a braid or the like.
  • the fibers composing it will preferably be non-metallic.
  • nylon fibers They are preferably nylon fibers. Nevertheless, any other material capable of forming fibers and of resisting high mechanical stresses could be envisaged.
  • It may, for example, be a material of the tie-down strap type or automobile seat belt strap.
  • a technical textile has the advantage of being light. In addition, it can be dimensioned to support significant efforts without significant impact on its weight.
  • the flexible fastening elements made of technical textile material thus make it possible to guarantee robust restraint while keeping the overall weight of the restraint assembly which remains low.
  • the fixing plates may be common to several types of tools while the securing elements may be adapted from one type of tool to another depending on the forces caused by the fall of the type of tool supported. A great modularity is thus obtained by a common use of identical fixing plates for different types of tool.
  • the fixing plates will be common to several types of tool insofar as they are capable of withstanding the forces caused by the fall of the type of tool supported. Otherwise, they will be dimensioned to resist the forces caused by the fall of the type of tool supported.
  • At least one of the securing elements 15, 16 may be made of a material that is at least partly elastic, such as for example an elastomer or the like.
  • the elastic deformation of the element of corresponding attachment will cushion the fall of a tool attached to the restraint system suspended from a safety cord. This damping will preserve the tool from damage.
  • the axes of the pivot connections between the fastening elements 15, 16 and the ring 14 on the one hand and the fixing plates 10, 11 on the other hand are preferably essentially parallel to the longitudinal axis of the hole 142 of the ring 14. In variants, they could not be essentially parallel but be essentially orthogonal to the longitudinal axis of the hole 142 of the ring 14.
  • the first 15 and second 16 securing elements preferably have different lengths. As will be explained in more detail later, this allows the ring 14 to be placed on one side or the other of the center of gravity G of a tool 3 to which the retaining assembly is intended to be fixed when the cord 14 is maintained essentially vertically and the longitudinal axis A of the tool 3 is maintained essentially horizontally (cf. picture 3 ).
  • the length of the first 15 and second 16 securing elements is preferably determined so that the longitudinal axis A of the tool 3 to which the retaining assembly is intended to be fixed s extends essentially parallel to the longitudinal axis B of the cord 14 when the restraint assembly is suspended from the cord 14 (cf. figure 4 ).
  • Essentially parallel means that the angle of inclination ⁇ between the axes A and B may for example be between 0 and 15°.
  • the length of the first 15 and second 16 securing elements is determined so that the head 31 of the tool 3 (part carrying a working tool such as a drill, a milling cutter, a screw socket or other%) to which the retaining assembly is intended to be fixed is oriented downwards, that is to say towards the ground, when the retaining assembly is suspended from the cord.
  • the body 30 of the portable tool 3 which it is desired to secure to the retaining assembly is inserted inside the fixing plates 10, 11 through their opening.
  • the fixing plates 10, 11 are then secured to the body 30 by means of the screws 13.
  • the body 30 is then clamped between the two fixing plates 10, 11.
  • a hook 4 secured to one end of the safety cord 2 is then passed through the hole 142 of the ring 14.
  • the other end of cord 2 is fixed to a fixed structure such as here a gantry 5 (partially shown).
  • the gantry 5 is placed in height at the level of the intervention zone of the operator.
  • the length of cord 2 is chosen according to the height of the intervention zone relative to the ground. It is chosen so that when a portable tool is suspended from the cord after having fallen, it is high enough in relation to the surface of the ground not to hit a person or equipment located under the intervention zone.
  • tool 3 When an operator is working at height and inadvertently drops tool 3, it falls within the limit of the length of cord 2. Once the fall height is such that the cord is taut, tool 3 orients itself naturally (under the effect of gravity) in a privileged position imposed by the relative position of the center of gravity G of the tool and of the ring 14.
  • the privileged position of the tool 3 is such that its longitudinal axis A is essentially parallel, or slightly inclined, with respect to the axis B of the cord extending vertically, and that its head 31 is is oriented towards the ground.
  • the tool is then in a position in which it takes up the least space vis-à-vis its environment.
  • the preferred orientation of the tool after the fall is such that the projected surface of the tool on the ground is as small as possible in order to reduce the risk of collision with its environment.
  • this is the orientation in which the tool's greatest dimension (length, width, or height) is substantially parallel to the B-axis of the cord extending vertically when the tool is attached to the device. restrained and suspended from the cord.
  • the preferred orientation may also be such that the longest dimension of the tool extends substantially perpendicular to the vertical when the tool is attached to the retainer and hanging from the cord.
  • the ring is placed along a vertical axis passing through the center of gravity of the tool when the retainer is held horizontally.
  • the latter will deform elastically during the fall of the tool so as to cushion it. This limits the forces to which the tool is subjected during its fall so as to preserve its integrity and avoid its deterioration.
  • one of the first 15 and second 16 securing elements in this case the second even if it could be the first, is traversed by a plurality of holes 163 and is able to be accordion-folded so as to place the holes aligned along the same axis.
  • the figure 9 illustrates the second securing element 16 which takes the form of a strip. This band is traversed by a plurality of holes 163. These holes 163 are arranged along transverse axes perpendicular to the longitudinal axis C of the strip. They are distributed equidistantly along this longitudinal axis C.
  • This band can be at least partly folded on itself like an accordion and thus have a plurality of folds 164.
  • the holes 163 located on the folds 164 are then aligned along the same axis D parallel to the longitudinal axis C .
  • the second fastening element 16 can be kept thus accordion-folded by passing a retaining rod 60 (also called retaining element) through the holes, one of the ends 61 of the rod being snapped into the slot 140 of the hook 14 while the other end carries a damping ball 62 whose section is of dimension(s) greater than that(s) of the holes.
  • a retaining rod 60 also called retaining element
  • the retaining ball 60 will preferably be made of an elastic material such as, for example, elastomer, foam, or another suitable material.
  • An eyelet may delimit the peripheral contour of each hole of the second fastening element.
  • the holes of the securing element 16 and the damping ball 60 are dimensioned such that a predetermined force threshold undergone by the tool during a fall beyond which the tool to be serviced is reached after the damping ball 60 has passed a predetermined minimum number of holes. This threshold can for example be exceeded as soon as the damping ball passes through only one of the holes.
  • the retaining assembly thus comprises means indicating that a tool to which the retaining assembly suspended from the cord is attached has suffered a fall inducing on the tool a force reaching a predetermined threshold beyond which the tool must be revised.
  • Such indicator means may alternatively or in addition be obtained, in the first as in the second embodiment, by sizing at least one of the securing elements 15, 16 and/or at least one of the fixing plates 10 , 11 so that it (s) is (are) t plastically deformable (s) beyond a threshold of force undergone by a tool during a fall inducing that it must be revised.
  • the second securing element 16 may be two-tone: it may have a first color, for example green, over a first part of its length (placed on the side of the ball 60 when it is in a state of rest) and a second color, for example red, over a second part of its length.
  • a first color for example green
  • red for example

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Workshop Equipment, Work Benches, Supports, Or Storage Means (AREA)
  • Emergency Lowering Means (AREA)

Claims (15)

  1. Rückhalteanordnung (1), welche an einem tragbaren Werkzeug (3) befestigbar ist, um das Anschließen einer Sicherheitsleine (2) an das Werkzeug (3) zu ermöglichen,
    wobei die Anordnung (1) umfasst:
    - eine erste (10) und eine zweite (11) Befestigungsplatte, die mit dem tragbaren Werkzeug (3) fest verbindbar sind, indem sie den Körper (30) desselben umspannen;
    - ein Verankerungselement (14), das geeignet ist, das Anhängen der Leine (2) zu ermöglichen;
    - ein erstes (15) und ein zweites (16) flexibles Element zur festen Verbindung, die jeweils ein mit dem Verankerungselement (14) fest verbundenes Ende und ein mit der ersten (10) bzw. zweiten (11) Befestigungsplatte fest verbundenes Ende aufweisen, dadurch gekennzeichnet, dass die Längen des ersten (15) und des zweiten (16) flexibles Elements zur festen Verbindung so gewählt sind, dass das Verankerungselement (14) in Bezug auf den Schwerpunkt (G) des Werkzeugs (3), an dem die Anordnung (1) befestigt werden soll, so angeordnet ist, dass es dem Werkzeug (3) eine vorbestimmte Ausrichtung verleiht, wenn es durch die Rückhalteanordnung (1) an der Leine (2) aufgehängt wird.
  2. Anordnung nach Anspruch 1, wobei das erste (15) und das zweite (16) flexible Element zur festen Verbindung aus einem technischen Textilmaterial hergestellt sind.
  3. Anordnung nach Anspruch 1 oder 2, wobei die Längen des ersten (15) und des zweiten (16) Elements zur festen Verbindung so gewählt sind, dass das Verankerungselement (14) entlang einer vertikalen Achse (B) angeordnet wird, die durch den Schwerpunkt (G) des Werkzeugs (3) verläuft, an dem die Anordnung (1) befestigt werden soll, wenn die Anordnung (1) im Wesentlichen horizontal gehalten wird.
  4. Anordnung nach Anspruch 1, wobei die Längen des ersten (15) und des zweiten (16) Elements zur festen Verbindung so gewählt sind, dass das Verankerungselement (14) entlang einer vertikalen Achse (B) angeordnet wird, die sich auf der einen oder der anderen Seite des Schwerpunkts (G) des Werkzeugs (3) befindet, an dem die Anordnung (1) befestigt werden soll, wenn die Anordnung (1) im Wesentlichen horizontal gehalten wird.
  5. Anordnung nach einem der Ansprüche 1 bis 3, wobei die vorbestimmte Ausrichtung derart ist, dass die Projektion des Werkzeugs (3), an dem die Anordnung (1) befestigt werden soll, auf den Boden die kleinste mögliche Fläche aufweist.
  6. Anordnung nach Anspruch 5, wobei die Längen des ersten (15) und des zweiten (16) Elements zur festen Verbindung so bestimmt sind, dass sich die größte Abmessung des Werkzeugs (3), an dem die Anordnung (1) befestigt werden soll, im Wesentlichen parallel zur Längsachse der Leine (2) erstreckt, wenn die Anordnung (1) an der Leine (2) aufgehängt ist.
  7. Anordnung nach Anspruch 6, wobei die Längen des ersten (15) und des zweiten (16) Elements zur festen Verbindung so bestimmt sind, dass der Kopf (31) des Werkzeugs (3), an dem die Anordnung (1) befestigt werden soll, nach unten gerichtet ist, wenn die Anordnung (1) an der Leine (2) aufgehängt ist.
  8. Anordnung nach einem der Ansprüche 1 bis 7, welche Dämpfungsmittel umfasst, die geeignet sind, den Fall eines Werkzeugs (3), das mit der an der Leine (2) aufgehängten Anordnung (1) fest verbunden ist, zu dämpfen.
  9. Anordnung nach einem der Ansprüche 1 bis 8, welche Anzeigemittel umfasst, die anzeigen, dass ein Werkzeug (3), das an der an der Leine (2) aufgehängten Rückhalteanordnung (1) befestigt ist, einem Fall ausgesetzt war, der zur Einwirkung einer Kraft auf das Werkzeug (3) geführt hat, die einen vorbestimmten Schwellenwert erreicht, bei dessen Überschreitung das Werkzeug (3) überprüft werden muss.
  10. Anordnung nach Anspruch 8 oder 9, wobei wenigstens eines von dem ersten (15) und dem zweiten (16) Element zur festen Verbindung elastisch verformbar ist.
  11. Anordnung nach Anspruch 9, wobei wenigstens eines von dem ersten (15) und dem zweiten (16) Element zur festen Verbindung jenseits des Schwellenwertes plastisch verformbar ist.
  12. Anordnung nach Anspruch 9, wobei wenigstens eine von der ersten (10) und der zweiten (11) Befestigungsplatte jenseits des Schwellenwertes plastisch verformbar ist.
  13. Anordnung nach einem der Ansprüche 8 bis 12, wobei wenigstens eines der Elemente zur festen Verbindung (15, 16) einnehmen kann:
    - einen Ruhezustand, in welchem es wenigstens teilweise ziehharmonikaförmig gefaltet ist, wobei jede der Falten (164) von einem Loch (163) durchquert wird, wobei sich die Löcher (163) im Wesentlichen entlang derselben Achse erstrecken und alle von einem Rückhalteelement (60) durchquert werden, von dem ein erstes Ende mit dem Verankerungselement (14) fest verbunden ist und das andere Ende, Dämpfungsende genannt, einen Querschnitt aufweist, der größer als derjenige der Löcher (163) ist, und
    - einen Endzustand, der nach dem Fall eines Werkzeugs (3) eingenommen wird, das mit der am Ende der Leine (2) aufgehängten Anordnung (1) fest verbunden ist, wobei sich während dieses Falls das Dämpfungsende durch wenigstens eines der Löcher (163) hindurchbewegt und dabei den Fall des Werkzeugs (3) durch Reibung an den Rändern des wenigstens einen Loches (163) bremst, wenn ein vorbestimmter Spannungsschwellenwert an der Leine (2) erreicht ist.
  14. Anordnung nach Anspruch 13, wobei jedes der Löcher (163) von einer Öse umgeben ist und das Dämpfungsende aus einem elastisch verformbaren Material hergestellt ist.
  15. Anordnung nach Anspruch 13 oder 14, wobei die Löcher (163) und das Dämpfungsende so bemessen sind, dass der vorbestimmte Schwellenwert der auf das Werkzeug (3) während eines Falls einwirkenden Kraft, bei dessen Überschreitung das Werkzeug (3) überprüft werden muss, erreicht wird, nachdem sich das Dämpfungsende durch eine vorbestimmte minimale Anzahl von Löchern (163) hindurchbewegt hat.
EP19212597.9A 2018-12-14 2019-11-29 Optimiertes rückhaltesystem Active EP3666473B1 (de)

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FR1872947A FR3089839B1 (fr) 2018-12-14 2018-12-14 Ensemble de retenue optimisé

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EP3666473A1 EP3666473A1 (de) 2020-06-17
EP3666473B1 true EP3666473B1 (de) 2022-07-13

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FR3089839B1 (fr) 2021-07-23
EP3666473A1 (de) 2020-06-17
FR3089839A1 (fr) 2020-06-19

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