EP0487805A1 - Seil aus Verbundmaterial - Google Patents

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Publication number
EP0487805A1
EP0487805A1 EP90440112A EP90440112A EP0487805A1 EP 0487805 A1 EP0487805 A1 EP 0487805A1 EP 90440112 A EP90440112 A EP 90440112A EP 90440112 A EP90440112 A EP 90440112A EP 0487805 A1 EP0487805 A1 EP 0487805A1
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EP
European Patent Office
Prior art keywords
cable according
cable
winding
fibers
axes
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Withdrawn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
EP90440112A
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English (en)
French (fr)
Inventor
Thierry Petitjean
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP90440112A priority Critical patent/EP0487805A1/de
Publication of EP0487805A1 publication Critical patent/EP0487805A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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 present invention relates to a rigid or semi-rigid cable made of composite material, more particularly intended to serve as a shroud, and which has unequaled technical characteristics in particular in the shrouding range, ranging from lightness and solidity, and capable of withstanding high tensile stresses.
  • the invention also relates to nautical equipment such as halyards, shackles, articulation cords and more generally any type of ropes used on sailboats.
  • the type of configuration mentioned presents a major defect: the heterogeneity between the intermediate part, the cable as such, and the two reported end fittings.
  • the first problem concerns the differences in weight, material, structure between these elements, which are likely to weaken their connection.
  • the very fixing of the end-piece to the end of the cable constitutes a technical problem which is difficult to solve, due to the particular constraints to which these cables are subjected.
  • connection causes radial compression forces of the fiber which can - depending on the value of the angle - be ten times greater than the tensile load.
  • the composite fibers do not support the lateral loads, and said load being in principle the expression of the effort to contain, we can well measure the ineffectiveness of this first system, due to a significant loss compared to the cable load.
  • the second device has an imbalance between the external and internal fibers of the cable, due to the bonding which only affects the external "skin".
  • the risks of detachment are also significant and can only be combated by the use of tips offering a sufficient bonding length, therefore of space and weight out of proportion to the required objectives.
  • This configuration also leads to problems of expansion of the different materials.
  • the third type of tip is too dependent on the quality of the resin, since the solidity of the assembly is dependent on it: the fibers are of course cut with each thread.
  • bottom-of-shear problems can arise if the tip is not properly sized. Again, only bulkheads such as weight reduction targets cannot be achieved provide sufficient strength guarantees.
  • the cable according to the invention overcomes the drawbacks mentioned by proposing an original structure which makes it possible to overcome the listed problems.
  • the weak points of the assembly are not located at the level of the composite fibers proper, whereas it would be, if this were the case, easy to adapt the beam to the tensile force exerted, without increasing the volume. or the weight of the system unreasonably.
  • the shrouds of the invention are based on the opposite principle: it is the fibers which collect the major part of the efforts, helping to facilitate the adaptation of the assembly to the conditions of use without leading to aberrant configurations.
  • the points of application of the tensile forces are not placed outside the bundle of fibers, but conversely, they are located inside said bundle.
  • the invention also provides a cable of composite material, flexible or rigid, and intended more particularly for guying, but which is characterized in that it consists of a filament winding of composite fiber agglomerated by means of connection, and wound in several possible arrangements around at least two end axes forming at least two corresponding terminal heads, each having an orifice or taking the form of a ball in order to facilitate the fixing of the cable.
  • terminal heads are moreover provided with means intended to distribute and / or absorb the forces exerted on the cable, and the winding can be coated with an additional protection means.
  • the composite fibers constituting the cable proper, as well as the binders or connecting means can be chosen from a few materials usually used in this type of technology. Several examples will be given later in this text.
  • the connecting means can thus be applied cold or hot.
  • the winding itself can undergo variants. In the simplest case, it is a simple winding around several axes, respecting the geometrical layout of the shroud to be manufactured. But it is also possible to twist the winding of the fiber during winding, in order to increase the tensile strength of the cable.
  • the cable can also adopt a form of lenticular section, which may in particular be required on sailboats intended to participate in sports competitions.
  • the product obtained can be coated with a protective sheath or painted, so as to improve its surface condition for particularly aesthetic reasons, but also to preserve the condition of the cable.
  • a protective sheath or painted In fact, certain resins which can be used as a binder are sensitive to ultraviolet radiation, and can be deteriorated after a certain period of exposure. This risk should therefore be prevented by adopting one of the means of protection mentioned.
  • a sheath can prove to be a valuable aid against accidental side impacts.
  • One of the main advantages of the design according to the invention is the adaptability to any type of configuration. It is indeed an extremely light homogeneous assembly, due to the absence of attached end caps, and very reliable since the forces in each fiber are characterized by continuity and optimal distribution. This type of design is moreover not limited by dimensional problems, as was the case until now.
  • shrouds supporting high loads can be manufactured by increasing the number of passes during winding.
  • this type of shroud results from a manufacturing process which is extremely flexible and adaptable to each use case.
  • the end orifice is surrounded by a ring, for example made of stainless steel, around which the fibers are wound.
  • a ring for example made of stainless steel
  • An additional means consists in surrounding the steel ring with a carbon "cushion”, in reality a second kind of ring, whose properties are a little different, and which is used not only to distribute the forces, but also to damp them. In this way, the terminal structure thus produced is much more flexible than in the previous configurations. It is of course possible to place one or more carbon “cushions", depending on the expected effects.
  • each terminal head is provided with several auxiliary axes allowing a differentiated winding on heads which are in fact multidimensional. This type of design allows fine adjustment, suitable for any type of product.
  • the cable end of the invention can also be produced in the form of a ball provided with a central core, at the end axis, and a secondary axis around which part of the winding is formed. . Additionally, at the level of the flare marking the intersection between the central body of the cable and the end ball, a support cup is added.
  • guy lines allowing multiple guy lines by diverting the main cable in one or more places, in directions diverging from the main longitudinal axis.
  • Another variant of the invention relates to a shackle or an articulation cord.
  • the cable is folded back on itself, so that the terminal openings are coaxial, thus forming a shackle or a cord.
  • the fibers form a dead turn of the thread of the axis serving as a mandrel and mold, allowing the threaded part to be obtained without requiring machining and without cutting fibers.
  • Figure 1 shows the general principle of the shrouds according to the present invention, for which the composite fiber (1) is wound around two axes (2) (2 ') whose spacing constitutes the length of the shroud.
  • Figure 2 differs in that, at each axis, one or more dead turns are made so as to create a better distribution of forces at this level. This is further reinforced by the addition of a ring (3) made of stainless steel, or any other suitable metal, and a cushion (4) made of carbon.
  • FIG. 3 represents a possible configuration of the multi-axis variant, in which each terminal head is provided with its two main axes (2) (2 '), then secondary or annex axes (3) and (3'), (4) and (4 ') ...
  • the winding around these axes can either be simple or include turns dead, as the case may be.
  • the material substrate allowing multiple winding is obtained with an encarbone lug, and stainless steel rings.
  • Figures 4 and 5 show two possible variants of winding, respectively with a radial wire drawing and a twisted winding. This makes it possible, in combination with the connecting means, to increase the resistance of the stay cable, in particular to traction.
  • the resins do not hold onto the radial threads, which are therefore used in the flexible stays, with a sheath.
  • the ends can however be coated with resin to solidify the whole.
  • Figures 7 and 8 show two possible examples of guy lines used on sailboats. The first is as simple as possible, while the second has a derivation. It goes without saying that such a shroud may well have several branches, depending on the use which is intended for it. The limitations to these types of configuration, however, come from mechanical tests: they must of course resist the various constraints to which they will be subjected during real use, namely tensile, bending, or even shear stresses in certain cases.
  • the composite fiber is a thermoplastic fiber of the type sold under the brand SYSTEM FIT, which can be applied to any type of fiber surrounded by thermoplastic powder, acting as a binder.
  • the strop used for the test is rolled up hot, the thermoplastic being melted just before winding.
  • This type of guy however, has a point of weakness at its extreme point, at the intersection with the longitudinal axis, when it is of the type shown in Figure 1, that is to say made with a single coil.
  • the second example is made with fibers marketed under the brand SPECTRA, and with glue marketed under the brand NEOPRENE as a binder.
  • the fiber is impregnated manually, and the winding takes place cold between the axes.
  • the third example it is carbon fibers, with epoxy resin as a binder.
  • a carbon "cushion" has also been added to a metal ring and the winding involves several dead turns on each pass, with the lowest possible tension for the wire during the winding of said dead turns.
  • the breaking tension is approximately 100,000 N, which is also excellent.
  • the result can be further improved by strengthening the side of the terminal heads which turns out to be the weak point where the rupture occurs.
  • the last example concerns a device as shown in Figure 3, that is to say multi-axis.
  • the material to be wound is fibrocarbon, and the binder is again epoxy-type resin.
  • the different axes 2, 3, 4, 5 and 2 ', 3', 4 ', 5' allow a declining winding with smaller and smaller cushions.
  • the resin is then baked in the oven for one hour.
  • the result obtained therefore has an excellent finish.
  • Figure 8 shows the ball end variant.
  • the core (10) can be made of fiber or other materials, depending on the use.
  • the support cup (11) follows the flare of the end ball and is currently provided in stainless steel or titanium.
  • the secondary axis (12) is placed in the main body of the cable, at a certain distance from the end piece.
  • Figure 9 schematically shows a shackle.
  • One or more of the end ports (13) are molded around a threaded mandrel, which threads the port without severing the fibers.
  • the general configuration of this shackle is however very close to a standard cable, the difference being that the end heads are placed opposite one another.
  • the fibers used can be chosen from materials such as carbon, aramid fibers consisting of polyparaphenyleneterephthalamide, for example sold under the trademark KEVLAR, or fibers known by the trademark SPECTRA.
  • the binders can be chosen from synthetic resins such as epoxy or epoxy resins, or from synthetic elastomeric adhesives, for example based on polychloroprene such as that which is marketed under the brand NEOPRENE.
  • the cables of the present invention offer technical qualities which have had no equivalent in this field. They are light and resistant to tensile stresses, and are therefore suitable for use, for example, on racing yachts. In general, they respond to a constant concern of naval architects which consists in improving the performance of sailboats, thereby subjecting the components to more and more intensive efforts, while tending to reduce the weights and dimensions of said constituents.
  • cables of the invention can easily be repaired, even at sea, without the support of a well-equipped workshop. Indeed one can use resins which are compatible with water, and in particular sea water, authorizing repairs at any time, for example in full race if they are competition boats.

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  • Ropes Or Cables (AREA)
EP90440112A 1990-11-29 1990-11-29 Seil aus Verbundmaterial Withdrawn EP0487805A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP90440112A EP0487805A1 (de) 1990-11-29 1990-11-29 Seil aus Verbundmaterial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90440112A EP0487805A1 (de) 1990-11-29 1990-11-29 Seil aus Verbundmaterial

Publications (1)

Publication Number Publication Date
EP0487805A1 true EP0487805A1 (de) 1992-06-03

Family

ID=8205818

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90440112A Withdrawn EP0487805A1 (de) 1990-11-29 1990-11-29 Seil aus Verbundmaterial

Country Status (1)

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EP (1) EP0487805A1 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033814A1 (en) * 2001-10-15 2003-04-24 Boyce Spars Holdings Limited A method of manufacturing an elongate structural member
FR2841914A1 (fr) * 2002-07-04 2004-01-09 Cordalpes Procede de fabrication de segments de corde ou de cable presentant une ame a brins paralleles et segments de corde ou de cable ayant une boucle
NL1028360C2 (nl) * 2005-02-21 2006-08-22 Smartrigging B V Kabel, tuigage omvattende kabel, zeilschip omvattende tuigage, alsmede werkwijze voor het vervaardigen van de kabel.
EP3120990A1 (de) * 2015-07-22 2017-01-25 Skylotec GmbH Verfahren zum herstellen eines beschlagteils für eine persönliche absturz-schutzausrüstung
WO2020016461A1 (en) 2018-09-03 2020-01-23 Dsm Ip Assets B.V. Roundsling
CN113047173A (zh) * 2021-02-08 2021-06-29 中国建筑股份有限公司 一种纤维材料锚索及制造锚索的方法
WO2023156952A1 (fr) * 2022-02-18 2023-08-24 Polyacht Procédé de fabrication d'une estrope

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE376774C (de) * 1922-01-03 1923-06-05 George Bell Drahtseil
FR886318A (fr) * 1941-10-18 1943-10-12 Felten & Guilleaume Carlswerk Boucle en toron
US2799133A (en) * 1951-05-24 1957-07-16 Clarence W Rose Drawable rope having pre-drawn segment and method for producing the same
FR1228562A (fr) * 1959-05-26 1960-08-31 T I E Procédé de fabrication d'élingues sans ajouture, et les produits obtenus par la mise en oeuvre du procédé
US4257309A (en) * 1978-10-23 1981-03-24 Fiber Science, Inc. Continuous filament rope and method of making same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE376774C (de) * 1922-01-03 1923-06-05 George Bell Drahtseil
FR886318A (fr) * 1941-10-18 1943-10-12 Felten & Guilleaume Carlswerk Boucle en toron
US2799133A (en) * 1951-05-24 1957-07-16 Clarence W Rose Drawable rope having pre-drawn segment and method for producing the same
FR1228562A (fr) * 1959-05-26 1960-08-31 T I E Procédé de fabrication d'élingues sans ajouture, et les produits obtenus par la mise en oeuvre du procédé
US4257309A (en) * 1978-10-23 1981-03-24 Fiber Science, Inc. Continuous filament rope and method of making same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003033814A1 (en) * 2001-10-15 2003-04-24 Boyce Spars Holdings Limited A method of manufacturing an elongate structural member
FR2841914A1 (fr) * 2002-07-04 2004-01-09 Cordalpes Procede de fabrication de segments de corde ou de cable presentant une ame a brins paralleles et segments de corde ou de cable ayant une boucle
NL1028360C2 (nl) * 2005-02-21 2006-08-22 Smartrigging B V Kabel, tuigage omvattende kabel, zeilschip omvattende tuigage, alsmede werkwijze voor het vervaardigen van de kabel.
EP3120990A1 (de) * 2015-07-22 2017-01-25 Skylotec GmbH Verfahren zum herstellen eines beschlagteils für eine persönliche absturz-schutzausrüstung
WO2020016461A1 (en) 2018-09-03 2020-01-23 Dsm Ip Assets B.V. Roundsling
CN113047173A (zh) * 2021-02-08 2021-06-29 中国建筑股份有限公司 一种纤维材料锚索及制造锚索的方法
CN113047173B (zh) * 2021-02-08 2023-02-17 中国建筑股份有限公司 一种纤维材料锚索及制造锚索的方法
WO2023156952A1 (fr) * 2022-02-18 2023-08-24 Polyacht Procédé de fabrication d'une estrope
FR3132917A1 (fr) * 2022-02-18 2023-08-25 Polyacht Procédé de fabrication d’une estrope

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