EP3736025A1 - Flipline, en particulier destiné au positionnement de poste de travail et à l'accès assisté par corde sur un arbre - Google Patents

Flipline, en particulier destiné au positionnement de poste de travail et à l'accès assisté par corde sur un arbre Download PDF

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Publication number
EP3736025A1
EP3736025A1 EP19173790.7A EP19173790A EP3736025A1 EP 3736025 A1 EP3736025 A1 EP 3736025A1 EP 19173790 A EP19173790 A EP 19173790A EP 3736025 A1 EP3736025 A1 EP 3736025A1
Authority
EP
European Patent Office
Prior art keywords
flipline
cable
section
eye
rope
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19173790.7A
Other languages
German (de)
English (en)
Inventor
Tomas KOPACKA
Christopher Cowell
Dominik SECKLEHNER
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teufelberger Fiber Rope GmbH
Original Assignee
Teufelberger Fiber Rope GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teufelberger Fiber Rope GmbH filed Critical Teufelberger Fiber Rope GmbH
Priority to EP19173790.7A priority Critical patent/EP3736025A1/fr
Publication of EP3736025A1 publication Critical patent/EP3736025A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B27/00—Apparatus for climbing poles, trees, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
    • B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
    • B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/18—Grommets

Definitions

  • the invention relates to a flipline, in particular for workplace positioning and rope-assisted access to a tree, comprising a steel cable and a textile jacket, a first cable section of the steel cable being surrounded by the jacket and a second cable section of the steel cable adjacent to the first cable section being folded back to to form an eye.
  • fliplines also known to those skilled in the art as a special form of lanyards / connecting means, are used as part of personal protective equipment for people working on trees.
  • fliplines comprise a rope which has an eye at at least one end.
  • a mechanical rope shortener or a clamping knot is also guided, each of which has an additional eye.
  • the person working on the tree wears a belt with two fastening elements, one on the left and one on the right.
  • the flipline is then led around the tree so that the tree is between the flipline and the person.
  • the eye of the flipline is then hooked into one fastening element of the belt with a carabiner and the eye of the rope shortener in the other in the same way.
  • the rope shorter can be moved along the flipline to adjust it.
  • fliplines with spliced eyes can be used, which do not require a ferrule.
  • the splice determines the lifespan of the flipline.
  • the splice is made entirely by hand, which implies an increased risk, since the splice may not be carried out correctly due to human error.
  • the manual work is time-consuming and costly.
  • the aforementioned embodiments with ferrule and splice can also be combined, but this means an extremely complex process.
  • Another advantage of the flipline according to the invention is the increased safety, because, in particular during tree maintenance work, tree surgeons can inadvertently saw the flipline with chainsaws. Even if one of the cable sections is damaged in the flipline according to the invention, it is able to secure the arborist by means of the remaining cable section.
  • the jacket has the advantageous property that both cable sections of the Steel cables are held together over the entire length. It can therefore not happen that the rope sections are separated when "flipping".
  • the fixing of the first cable section with the third cable section at the end facing the eye has the effect that the eye is dimensionally stable, for which ferrules are particularly suitable.
  • the fixing of the first cable section with the third cable section at that end that is facing away from the eye serves in particular to ensure that the force is evenly transmitted to the first and third cable sections, i.e. the fixing at this end could also be carried out through the jacket itself, if it is tight enough, although a ferrule is preferred here as well.
  • the first and third cable sections are preferably fixed at both ends by means of a ferrule. This represents a proven and inexpensive means of fixing, but other types of clamps or even soldered or welded connections could also be used.
  • the steel cable could be continued behind the first and / or third cable section at the end facing away from the eye, for example with a fourth or fifth cable section adjoining the first or third cable section in order to equip the flipline with further safety measures.
  • the steel cable itself has an end at the end of the first and third cable section facing away from the eye, i.e. terminates there. This can be achieved in particular with two preferred embodiments as follows.
  • the steel cable terminates essentially directly at the end of the first and third cable section facing away from the eye.
  • the flipline at one end is from the first eye, i.e. the second rope section, bounded and at the other end by the immediately terminating first and third rope sections, whereby a "blunt", i.e. eyeless, end of the flipline results.
  • the steel cable has a further eye at the end of the third cable section facing away from the eye, which is formed by a fourth or fifth cable section of the steel cable that is folded back and adjoins the first or third cable section. At the end of the first cable section facing away from the eye, the steel cable terminates essentially directly.
  • the flip line ends in two eyes, the other eye being designed according to the prior art and therefore not having the advantages according to the invention.
  • an inner circumference of the eye is reinforced with a thimble, which reduces wear on the eye.
  • the ends of the jacket are fixed to the first and third cable sections, preferably by means of further ferrules. This prevents the jacket from slipping on the steel cable. Fixing can be carried out directly next to or on the ferrule. E.g. the two ferrules for the jacket can each be attached essentially directly next to or on the ferrules that fix the first and third rope sections.
  • the flip line comprises a stopper which is arranged at the end of the flip line facing away from the eye.
  • This stopper is usually used to stop a shorter rope at the end of the flipline if it accidentally slips along the flipline.
  • the stopper can be formed, for example, by the already mentioned further eye or by the press clamp or further press clamp facing away from the eye.
  • the steel cable preferably has a diameter of 2 to 10 mm, preferably 4 to 8 mm. Due to the double guidance of the steel cable, the flipline will have an overall oval cross-section, which then preferably has a nominal diameter of 10 to 20 mm (measured according to EN1891: 1998 test method 5.3).
  • the first and third cable sections advantageously have a length of 1.5 to 15 m, preferably 2 to 10 m, so that the flipline can be used in particular as a safety device in building maintenance.
  • the eye can also have other dimensions.
  • the remaining breaking force of the flipline after a complete severing of the first or third rope section is preferably at least 9 kN, preferably at least 12 kN, particularly preferably at least 15 kN. This ensures sufficient safety even after an unintentional severing of the first or third rope section, as can certainly be the case with tree maintenance work using a chainsaw.
  • a flipline 1 comprises a steel cable 2 as the cable core and a textile jacket 3 which surrounds the steel cable 2 on a first cable section S1.
  • the steel cable 2 according to the prior art has a first cable section S1, a second cable section S2 adjoining the first cable section S1 and a third cable section S3 adjoining the second cable section S2.
  • the second rope section S2 is turned back to an eye 4, i. to form a loop.
  • the third cable section S3 only serves to fix one end of the steel cable 2 to itself, so that the eye 4 retains its shape.
  • the first cable section S1 and the third cable section S3 are fixed to one another by means of a ferrule 5, the cable section S3 terminating almost immediately behind the ferrule 5.
  • the eye 4 of the flipline 1 is e.g. connected via a carabiner to a belt of a person who wants to secure himself to a tree.
  • the flipline 1 is led around the tree, whereupon another end of the flipline is also attached to the belt, for example by means of another eye at the other end of the flipline or by means of a rope shortener.
  • the person can then lean back in the belt, which is secured by the flipline 1 that attacks the tree.
  • Fig. 2 shows a flipline 6 according to the invention, in which shear forces in the ferrule 5 are essentially avoided.
  • the flipline 6 according to the invention is particularly suitable for workplace positioning and rope-assisted access to a tree, but also for any other activity in which a person is to be secured to an essentially vertical structure. This can include, for example, sporting activities such as climbing, maintenance work on masts or cleaning work on artificial objects such as pillars.
  • the flipline 6 comprises a steel cable 7 and a textile jacket 8 ( Fig. 3 ; in Fig. 2 the jacket 8 was not shown for the sake of clarity).
  • the steel cable 7 has a first cable section S1, a second cable section S2 adjoining the first cable section S1 and a third cable section S3 adjoining the second cable section S2.
  • the third rope section S3 has essentially the same length as the first rope section S1.
  • the steel cable 7 is preferably made in one piece, ie the cable sections S1, S2, S3 are cable pieces or the like that are not welded together.
  • the second rope section S2 is folded back to form the eye 4, and the ferrule 5 fixes the first and third rope sections S1, S3 at one end 9 of the first rope section S1.
  • the third cable section S3, which, as explained above, has essentially the same length as the first cable section S1, is also fixed at that end 10 with the first cable section S1 that is opposite the second cable section S2. Since the ends of the first and third rope sections S1, S3 essentially coincide in terms of their position with respect to the flipline, they are denoted below with the same reference numerals 9, 10.
  • the first and third rope sections S1, S3 are thus arranged essentially parallel to one another in the flipline and are fixed to one another at their two ends 9, 10, ie the end 9 of the first rope section S1 facing the eye 4 is facing the eye 4 End 9 of the third cable section S3 is fixed and the end 10 of the first cable section S1 facing away from the eye 4 is fixed to the end 10 of the third cable section S3 remote from the eye 4.
  • a ferrule 11 can be used, which can be of the same type as the ferrule 5.
  • another type of connection can also be used. Fixed means that movement of the first and third cable sections in relation to one another in a longitudinal direction is prevented.
  • both rope sections S1, S3 absorb tensile forces evenly, which is shown in FIG Fig. 2 is shown schematically by FZ1 and FZ2.
  • both the first and the third cable section S1, S3 are guided within the jacket 8, ie surrounded by the jacket 8.
  • the jacket 8 completely envelops the first and third rope sections S1, S3, depending on the embodiment, but it can also be provided that a part of the first and third rope sections S1, S3 is not enveloped in the area of the ends 9, 10.
  • the second cable section S2 is usually not surrounded by the jacket 8, but can have a separate covering, in particular a plastic cladding.
  • a thimble 12 usually made of metal, can be provided in the eye 4 in order to make it dimensionally stable.
  • the steel cable 7 of the flip line 6 according to the invention can be designed as is customary in the prior art and has a rigidity that enables the flip line 6 to flip.
  • the steel cable 7 usually has a circular cross-section, but this can be deviated from, in particular in order to make the cross-section of the flipline 6, for example, circular.
  • the steel cable 7 could be designed, for example, as a composite of several steel cables with a smaller cross section than the steel cable 7.
  • the textile sheath 8 can be made of any fiber, i.a. Polyester (PES), polyamide (PA), high molecular weight polyethylene (HMW-PE), polypropylene (PP), are manufactured and braided, knitted, woven, etc.
  • PET Polyester
  • PA polyamide
  • HP-PE high molecular weight polyethylene
  • PP polypropylene
  • the steel cable 7 can be braided around or also encased in a textile tube.
  • ferrules 13, 14 can be used, which can each be arranged essentially next to or directly next to one of the ferrules 5, 11.
  • ferrules other types of clamps or fasteners can also be used here Use.
  • the jacket 8 can also be fixed simultaneously with the first and third cable sections S1, S3, ie under the ferrule 5, 11.
  • Fig. 3 also shows that the flipline 6 ends on one side in the eye 4 and on the other side has a blunt, eyeless end, ie the steel cable 7 terminates at the end 10 of the first and third cable sections S1, S3 facing away from the eye 4 essentially directly, ie the steel cable 7 has only the first, second and third cable sections S1, S2 and S3 and thus has two ends, both of which lie at the end 10 of the first and third cable sections S1, S3 facing away from the eye 4.
  • the flipline 6 ends at both ends in one eye, one of the eyes 4 having the advantages according to the invention and the other according to the prior art as in FIG Fig. 1 shown is formed.
  • the steel cable 7 has a further eye at the end 10 of the third cable section S1, S3 facing away from the eye 4, which is formed by a fourth or fifth cable section of the steel cable 7 that is folded back and adjoins the first or third cable section S3.
  • an additional ferrule can be used to form the eye according to the prior art, whereby this additional clamp is arranged essentially next to the ferrule 11.
  • the flipline is also equipped with a further eye at the end opposite the eye 4, this acts as a stopper, for example for a rope shortener 15 slipping in the direction R.
  • a further stopper can also be used at the end 10 be provided, for example can be formed by the ferrule 11, the further ferrule 14, or another stopping element.
  • the dimensions of the flipline 6 are chosen so that it is suitable for the respective application.
  • the steel cable can, for example, have a diameter of 2 to 10 mm, preferably 4 to 8 mm, and / or the first and third cable sections S1, S3 have a length of 1.5 to 15 m, preferably 2 to 10 m , exhibit.
  • the eye 4 forms an opening of 0.5 to 40 cm 2 , preferably 2.5 to 15 cm 2 .
  • the steel cable can have a correspondingly thinner cross section so that the flipline becomes lighter, or the Length can be adapted to a certain tree or column diameter in order not to use a rope shorter 15.
  • the flipline 6 Since the jacket 8 envelops both the first and the third cable section S1, S3 and the steel cable 7 usually has a circular cross-section, the flipline 6 has an overall oval cross-section, which, depending on the thickness of the steel cable, has a nominal diameter of 10 to 20 mm (measured according to EN1891: 1998 test method 5.3). If, however, a steel cable 7 with a non-circular cross-section is selected, the flipline can also have a different, preferably even circular, cross-section.
  • An exemplary flipline 6 according to the invention was made as follows. A 6.2 m long galvanized steel cable 7 with a diameter of 6 mm and a structure 6x37 with a fiber core and an essentially round cross-section was pulled back to form an eye 4. A thimble 12 made of stainless steel was inserted into the eye 4. The two steel cable ends were threaded into a Talurit clamp No. 6.5 / length: 28 mm and pressed using a hydraulic press with a force of 470 kN. The eye 4 formed had an opening with an area of 6 cm 2 . The steel rope used had a minimum breaking force of 20.8 kN according to the manufacturer's specification.
  • the double-guided steel cable 7 with eye 4 in this way was braided with 3 m of textile jacket 8 as follows.
  • Several prepared double-guided steel cables 7 with eye 4 were hung together, here with auxiliary cables, and braided together. After the braiding process, the individual fliplines 6 were separated.
  • the textile jacket 8 was severed with a heat cutter and the auxiliary rope was removed.
  • the jacket 8 had the following structure: 24 braid; One thread made of polyester per bobbin with structure: (1100 dtex x7 / 70S) x3 / 50 Z or (1100 dtex x7 / 70Z) x3 / 50S; Bond 1/1; Lay length 40 mm.
  • the jacket 8 was cut through on the one hand above the ferrule 5 with the hot cutter, so the ferrule 5 was braided over.
  • the textile coat ended 5 cm before the end of the two steel cable ends of the same length.
  • the textile jacket 8 was fixed with a ferrule 13 at the end near the eye 4.
  • a Talurit clamp No. 11 / length: 20 mm was pushed up to the thimble and pressed there with a force of 470 kN.
  • a second Talurit clamp no. 11 / length: 20 mm was used to fix the textile jacket 8 at the end facing away from the eye 4 and to press it. This clamp served as a stopper.
  • the two steel cable ends were attached to the end facing away from eye 4 with another Talurit clamp No. 6.5 / length: 28 mm pressed and fixed.
  • all clamps, regardless of their size, were loaded with a force of 470 kN during pressing.
  • the first rope section S1 was cut with the aid of a metal cutting disk and the third rope section S3 was also slightly damaged in the process.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Ropes Or Cables (AREA)
EP19173790.7A 2019-05-10 2019-05-10 Flipline, en particulier destiné au positionnement de poste de travail et à l'accès assisté par corde sur un arbre Withdrawn EP3736025A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19173790.7A EP3736025A1 (fr) 2019-05-10 2019-05-10 Flipline, en particulier destiné au positionnement de poste de travail et à l'accès assisté par corde sur un arbre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19173790.7A EP3736025A1 (fr) 2019-05-10 2019-05-10 Flipline, en particulier destiné au positionnement de poste de travail et à l'accès assisté par corde sur un arbre

Publications (1)

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EP3736025A1 true EP3736025A1 (fr) 2020-11-11

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EP19173790.7A Withdrawn EP3736025A1 (fr) 2019-05-10 2019-05-10 Flipline, en particulier destiné au positionnement de poste de travail et à l'accès assisté par corde sur un arbre

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1931808A (en) * 1931-11-24 1933-10-24 Andersen Hans Rope sling
DE2348713B1 (de) * 1973-09-28 1974-12-05 Hans Baur Mehrlitziges Endlosseil
US20050062303A1 (en) * 2001-12-03 2005-03-24 Mammut Tec Ag Lifting belt sling
US20140070557A1 (en) * 2012-09-12 2014-03-13 Samson Rope Technologies Rope Systems and Methods for Use as a Round Sling
AT515335A1 (de) * 2014-01-30 2015-08-15 Teufelberger Fiber Rope Gmbh Seilverbund

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1931808A (en) * 1931-11-24 1933-10-24 Andersen Hans Rope sling
DE2348713B1 (de) * 1973-09-28 1974-12-05 Hans Baur Mehrlitziges Endlosseil
US20050062303A1 (en) * 2001-12-03 2005-03-24 Mammut Tec Ag Lifting belt sling
US20140070557A1 (en) * 2012-09-12 2014-03-13 Samson Rope Technologies Rope Systems and Methods for Use as a Round Sling
AT515335A1 (de) * 2014-01-30 2015-08-15 Teufelberger Fiber Rope Gmbh Seilverbund

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