[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

WO2005019525A1 - Corde - Google Patents

Corde Download PDF

Info

Publication number
WO2005019525A1
WO2005019525A1 PCT/EP2004/010624 EP2004010624W WO2005019525A1 WO 2005019525 A1 WO2005019525 A1 WO 2005019525A1 EP 2004010624 W EP2004010624 W EP 2004010624W WO 2005019525 A1 WO2005019525 A1 WO 2005019525A1
Authority
WO
WIPO (PCT)
Prior art keywords
rope
core
sub
yams
braided
Prior art date
Application number
PCT/EP2004/010624
Other languages
English (en)
Inventor
Ian Frazer
Richard E. Nye
Randy Scott Longerich
Vincent Alliot
Original Assignee
Stolt Offshore Limited
Puget Sound Rope Corporation
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 Stolt Offshore Limited, Puget Sound Rope Corporation filed Critical Stolt Offshore Limited
Publication of WO2005019525A1 publication Critical patent/WO2005019525A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
    • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
    • D04C1/06—Braid or lace serving particular purposes
    • D04C1/12—Cords, lines, or tows
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B1/00—Constructional features of ropes or cables
    • D07B1/02—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
    • D07B1/025—Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/1014—Rope or cable structures characterised by their internal structure characterised by being laid or braided from several sub-ropes or sub-cables, e.g. hawsers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1012—Rope or cable structures characterised by their internal structure
    • D07B2201/102—Rope or cable structures characterised by their internal structure including a core
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/10—Rope or cable structures
    • D07B2201/1096—Rope or cable structures braided
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2053—Cores characterised by their structure being homogeneous
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2055—Cores characterised by their structure comprising filaments or fibers
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2052—Cores characterised by their structure
    • D07B2201/2065—Cores characterised by their structure comprising a coating
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2201/00—Ropes or cables
    • D07B2201/20—Rope or cable components
    • D07B2201/2047—Cores
    • D07B2201/2067—Cores characterised by the elongation or tension behaviour
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2205/00—Rope or cable materials
    • D07B2205/20—Organic high polymers
    • D07B2205/201—Polyolefins
    • D07B2205/2014—High performance polyolefins, e.g. Dyneema or Spectra
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D07B2207/4045—Heat treating devices; Corresponding methods to change the crystal structure of the load bearing material
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2207/00—Rope or cable making machines
    • D07B2207/40—Machine components
    • D07B2207/404—Heat treating devices; Corresponding methods
    • D07B2207/405—Heat treating devices; Corresponding methods to heat towards the glass transition temperature of the load bearing material
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2401/00—Aspects related to the problem to be solved or advantage
    • D07B2401/20—Aspects related to the problem to be solved or advantage related to ropes or cables
    • D07B2401/2015—Killing or avoiding twist
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B2501/00—Application field
    • D07B2501/20—Application field related to ropes or cables
    • D07B2501/2061—Ship moorings

Definitions

  • This invention relates to ropes and methods of constructing and using ropes used for lifting and deployment operations in which linear winches and tensioners are utilised, and in particular (but not limited to) offshore operations that includes the abandonment and recovery of both rigid and flexible pipelines.
  • Linear winches, "caterpillar” track tensioners, and similar types of winching systems are commonly used in numerous offshore deployment and recovery operations.
  • Various types of winch are used to deploy the rope to the seabed. These can be drum winches or traction winches, which involve bending the rope under tension, and linear winches where the rope is held in a set of grippers and fed out without any bending.
  • these types of winches are designed for use with steel wire ropes and steel pipe, both of which are highly rigid and not easily deformable, therefore having a high degree of resistance to the compressive forces applied by this type of winch.
  • High performance ropes are available, for example in a 12 x 12 form, as described in US 5,931,076 and US 5,901,632 (Ryan/Puget Sound Rope Corp.). Replacing steel wire rope with lightweight synthetic fibre rope such as this would significantly reduce the self weight of the rope.
  • standard deployment winches are not suitable for synthetic fibre rope, as they subject the rope to the compressive forces mentioned above, and the combined effect of high bending and tensile loads, which can significantly impair the fatigue performance of a synthetic fibre rope.
  • Linear winches or track tensioners do not induce bending loads in the synthetic fibre rope, but these types of winches induce a high compressive radial load to the rope, against which synthetic fibre rope does not offer sufficient resistance. Accordingly, it is an object of the current invention to provide an improved rope suitable for use with standard deployment winches and addressing one or more of the aforementioned disadvantages.
  • a braided fibre rope having a first end and a second end, said rope further comprising a core having a low-friction surface, said core being insignificant with regard to a tensile load bearing function, while significantly resisting crushing of the rope.
  • the core enables the fibre rope to resist the compressive loads applied by deployment/recovery apparatus, such as linear and caterpillar track tensioners without being detrimental to, or contributing substantially to, the load carrying capacity of the rope.
  • Said rope may be formed by a plurality of yarns braided together to form a multi-strand sub- rope, and a plurality of such sub-ropes braided together around said core to form a woven rope.
  • Each said yarn may comprise a plurality of filaments twisted or braided together.
  • the invention can be applied in any other braided rope construction which will support a central core.
  • the core may have a cross-sectional area equal to or greater than the calculated void space of the fibre rope. Where the core is greater than the void space and the construction of the rope allows, the rope simply expands radially to accommodate the core (the core will therefore limit the extension of the rope under tension). Where the rope is formed of sub- ropes, the void space of the rope refers only to the central void. Void space and other physical properties of the rope are calculated under a reference tension in accordance with a U.S. Cordage Institute industry standard.
  • the core may be unterminated at least one end of the rope, to permit sliding of the end within the braided fibre rope. In a preferred embodiment, the core is not terminated at any end.
  • the rope may be formed in a plurality of sections, longitudinally each section having a section of crush-resistant core captive within it. This avoids the core sliding so far that a long useless section of rope is formed at the upper or lower end. Care must be taken in use to ensure that compression does not become applied to a part of the rope from which the core has slid out.
  • Said crush-resistant core may comprise a material having a low surface coefficient of friction, or a core coated with or sheathed by said low friction surface.
  • core material is polyester fibre.
  • the core material may be nylon.
  • the core may be formed from a solid core, or from multiple strands that are enclosed by a single sheath. Some or all of the strands enclosed by the sheath may be formed into braided rope, for example double-braided rope.
  • Said braided fibre rope may, as an example, be constructed using twelve sub-ropes.
  • Each said sub-rope may be constructed using twelve yams. This particular construction has benefits of easy repair, as described for example in US'076, mentioned above.
  • Each said sub-rope may further comprise its own crush-resistant core having a low-friction surface.
  • the yams of the braided fibre rope may be formed from filaments of a low-elongation UHMWPE (ultra-high molecular weight polyethylene) fibre material.
  • UHMWPE ultra-high molecular weight polyethylene
  • An example of such materials of construction are PlasmaTM fibre, a patented variant of SpectraTM UHMWPE. (SpectraTM and PlasmaTM are trademarked by Honeywell and Puget Sound Rope respectively).
  • Said yams may have a comparatively small diameter so that no one of said yams has a cross-sectional area greater than about l/144th of a total cross-sectional area of said rope (excluding core area), so as to minimize the number of stages of twisting which are required to form each of said sub-ropes which is used in said large-diameter woven rope.
  • One method of specifying void area is as a percentage of the total cross sectional area of the rope, under standard test conditions. Typical values for the central void space to rope area are within the range 10% to 15%.
  • the invention does not require absolute incompressibility of the core. It may be sufficient for example if under compression, the core maintains, say 50%, 80% or 90%) of its own area, or for example 5% or 8% or 9% of the uncompressed rope area, under industry standard tension.
  • Said woven rope may have a circumference in the range of 127mm to 508mm.
  • Each said sub-rope may have a diameter of about 11 mm (7/16 inch) or greater.
  • Each yam from which a sub-rope is constructed may have a diameter of about 0.8 mm (1/32 inch) or greater.
  • Said yams may be twisted together at a twist factor substantially within the range 134 to 140.
  • Said yams may be braided together at a pick multiplier in the range from about 1.0 to about 1.4.
  • Said plurality of said sub-ropes may be braided together at a pick multiplier in the range from about 2.0 to about 2.8.
  • a method of construction a large-diameter braided rope having a first end and a second end comprising the steps of constructing said rope with a crush-resistant core having a low-friction surface, and with regard to tensile load bearing, ensuring said core is un-terminated at at least one of the ends of said rope.
  • Said method may comprise braiding together a plurality of yams to form a multi-strand sub- rope, and braiding together a plurality of said sub-ropes around said core to form a woven rope.
  • Said braided rope may, as an example, be constructed using twelve sub-ropes.
  • Each said sub-rope may be constructed using twelve yams.
  • Each said yam may be constructed using a plurality of filaments.
  • the core may be formed from polyester fibre, or nylon, in filament or solid form.
  • Said method may further comprise incorporating into each sub-rope while it is being formed a crush-resistant core having a low-friction surface, said core being, with regard to tensile load bearing, un-terminated at at least one of the ends of said sub-rope.
  • the method may comprise forming said rope in a plurality of sections, captivating a section of crush-resistant core longitudinally within each section.
  • the method may further comprise coating or sheathing the core with a low-friction surface, such as polyethylene.
  • a low-friction surface such as polyethylene.
  • said filaments may be twisted or braided together, prior to coating or sheathing the core.
  • the yams of the rope may be formed from filaments of a low-elongation UHMWPE (ultra- high molecular weight polyethylene) fibre material.
  • the method may further comprise the additional step of heat-stretching said yams prior to the step of braiding said yams into a sub-rope.
  • the step of braiding said yams together may comprise braiding said yams together to form said sub-rope without further twisting of said yams after said heat-stretching.
  • the step of heat-stretching said yam may comprise heat- stretching said yams formed of filaments of low-elongation UHMWPE filament material at an elevated temperature and pressure.
  • the method may comprise twisting a plurality of filaments together at a twist factor substantially within the range 134 to 140 so as to form a plurality of twisted yams.
  • Said yams may be braided together at a pick multiplier in the range from about 1.0 to about 1.4.
  • Said plurality of said sub-ropes may be braided together at a pick multiplier in the range from about 2.0 to about 2.8.
  • Said yams may have a comparatively small diameter so that no one of said yams has a cross-sectional area greater than about 1/144th of a total cross-sectional area of said rope (excluding core area), so as to minimize the number of stages of twisting which are required to form each of said sub-ropes which is used in said large-diameter woven rope.
  • Said woven rope may have a circumference in the range of 127mm to 508mm.
  • Each said sub-rope may have a diameter of about 11 mm (7/16 inch) or greater.
  • Each yam from which a sub-rope is constructed may have a diameter of about 0.8 mm (1/32 inch) or greater.
  • Fig. 1. is a side-elevation view of the construction of a known "12 x 12" braided rope
  • Fig. 2 provides a cross-sectional end view of the rope of Figure 1;
  • Fig. 3 is a side-elevation schematic diagram illustrating the general arrangement of a rope- based lifting and lowering apparatus using a vertical tensioner
  • Fig. 4 shows an abandonment and recovery system using moveable clamps to hold the rope
  • Fig. 5. is a side-elevation view of the rope of Figs. 1 and 2 that incorporates a crush- resistant core;
  • Fig. 6 is an end-view of the rope of Fig. 5, when slack;
  • Figures 7a and 7b are cross-sectional detailed views of the central core with a low friction coating and with a low friction jacket, respectively;
  • Figure 1 provides a side-elevation view of a recent development in the construction of very large diameter synthetic fibre rope and which is the subject of US Patents US 5,901,632 and US 5,931,076, mentioned above.
  • This particular "12 x 12" braided rope 10 is made up of a multiplicity of single fibre filaments 12 twisted to make fibre yams 14, which are themselves then twisted or braided together to make up a sub-rope 16, which are themselves then twisted or braided together to make up the fibre rope 10.
  • the particular embodiment which is illustrated employs a 12-strand, two-over/two-under form of braid, forming a large rope out of 12 sub-ropes.
  • Other forms of braid and other numbers of sub-ropes or yams may be used (such as 8-strand construction, for example), if the applicant does not demand all of the special attributes of the 12 x 12 type.
  • the individual twisted yams 14 are first twisted from the filaments 12 and then braided together to produce the sub-ropes 16 using a braider machine.
  • the braided sub-ropes 16 which are produced are then wound onto second spools and loaded onto another braider machine, by which they are woven together to form the finished rope 10.
  • the techniques of US'632 and US'076 make it possible (unlike with multiple-stage twisting) to maintain an optimal degree of twist in the yams so as to achieve maximum translational efficiency in the finished rope.
  • the yams can simply be given the optimal degree of twist initially, and this twist will remain largely unaffected by the subsequent braiding steps, or in some cases the yams may be given an initial degree of twist which is just slightly less than optimum, to compensate for a small but predetermined amount of twist which will be added during the braiding process.
  • braided ropes constructed in this manner provide significantly higher tensile strength than is possible with conventional twisted strand rope constructed to have the same body and coherence, and as such are widely utilised in the offshore industry.
  • the reader is invited to refer to patents US'632 and US'076 for further detail relating to the construction of the braided rope selected for improvement.
  • Figure 2 provides a cross-sectional end view of the rope of Figure 1.
  • the nature of the fibre rope construction suggests a relatively high level of void space 20 when sampling the cross section of the fibre rope 10.
  • the 1.38D 2 measurement is a U.S. Cordage Institute standard for determining the reference tension to be used when making rope measurements, etc.
  • the reference load (in newtons) is equal to the rope diameter (in mm) squared x 1.38.
  • the US equivalent to 1.38D 2 is 200D 2 , in which the reference load (in pounds) is equal to the rope diameter (in inches) squared x 200.
  • the total void area mentioned above includes smaller voids in the sub-ropes for a braid-of- braids construction such as the 12 x 12 rope. It also includes spaces between the strands within the sub-ropes. Accordingly, for the purpose of the present description, it is more instructive to consider the ratio of the central void area only to the overall area of the rope, still under the under reference tension. This ratio will typically be between 10%> and 15%> for the types of rope described here, and will be similar for a simple 12-rope braid as for a 12 x 12 braid-of-braids.
  • FIG. 3 is a side-elevation schematic diagram illustrating the general arrangement of a rope-based lifting and lowering apparatus using a vertical tensioner.
  • the system is used to lower and/or retrieve a load 30 to/from the seabed from a ship, barge or other sea-borne vessel 32.
  • Fibre rope 34 is stored in a spooling system 36, which does not serve as a winch for the weight of the load 30, however.
  • a continuous track tensioner 38 engages the rope 34 by friction and or other means and provides the tension for controlled lowering or lifting of the load.
  • Tracks or the like arrayed around the axis of the rope 34 are pressed radially inward by suitable rams, levers and the like to grip the rope, and to release it again when required.
  • Each track comprises a series of individual rope-handling shoes, linked together. While two tracks are shown for the sake of illustration in Figure 3, three or four tracks will be more usually provided, spaced at 120° or 90° intervals around the rope axis respectively.
  • the pad design is adapted to the rope, as described in our co-pending application PCT/GB2003/000932 (Agents ref. 64056WO) the content of which is incorporated herein by reference.
  • a rope behaves differently than, say, an umbilical or pipeline (flexible or rigid), when it is fed through a tensioner, compressed by the pads and brought under tension.
  • the diameter of the rope can change significantly with increasing load onto the pads as well as with increasing tension to the rope.
  • the shoe pads are therefore designed to provide a proper fit of the rope between the pads, regardless of the load to the pads or the tension to the rope.
  • Figure 4 shows another installation where the track type tensioner is replaced by a movable clamp or preferably a pair of clamps, to deploy or retrieve the fibre rope.
  • This shows a tower 40 with a winch 42 mounted at the top.
  • the fibre rope on this winch 42 is sourced from a spool 44. It is connected to a load (in this case the end of a pipeline 46, via a pipeline end termination (PLET)).
  • PLET pipeline end termination
  • Two clamps 50, 52 having the novel pad arrangement as described above hold the rope.
  • the clamp may be formed in two, three or four sections. The same clamps have been used to lay the pipeline, and then adapted by changing their shoes to handle the fibre rope for abandonment of the pipeline. (The same considerations as to shoe design apply to the clamps as to track type tensioner).
  • both clamps 50, 52 move relative to each other, in a sequential manner to and from the middle of the tower, to hand over the grip on the rope from one clamp to the other. This action results in the paying in or out of the rope, and can be controlled to provide continuous movement.
  • the skilled reader will appreciate that the same result can be achieved using a single movable clamp and a fixed clamp, although only intermittent movement could be achieved.
  • Figure 5, 6 and 7a and 7b are respective side-elevation and three cross-sectional end views of the rope of Figures 1 and 2, modified to withstand the effects of the radial compressive loads imposed upon the rope by the apparatus described with reference to Figures 3 and 4, by including within the fibre rope structure a c sh resistant core 100 having a diameter equal to or greater than the calculated void space 20 with the fibre rope.
  • the cmsh resistant core is made from a lightweight material such as polyester fibre, and is built into the rope during manufacture. If a multi-fibre core is being used, then the fibres are sheathed by low- friction material. If this is the case, the friction properties of the fibres from which the core is constructed are of secondary importance.
  • the method of manufacture is the same as described above for the unmodified rope, but with an additional facility for braiding the rope around the central core 100.
  • the size of the core is dictated by the void space to be filled, which is dependent upon the size of the fibres from which it is formed, and the configuration of the sub-ropes used in the construction of the rope.
  • the core is designed to fill the void in the 12 x 12 construction, thereby preventing the braided sub ropes from interacting together when the rope is subjected to the radial cmsh loads and deformation from the combined tension and bending loads as a result of deployment over a sheave.
  • the core is designed to fill the void in the 12 x 12 construction, thereby preventing the braided sub ropes from interacting together when the rope is subjected to the radial cmsh loads and deformation from the combined tension and bending loads as a result of deployment over a sheave.
  • pinching of the fibres between pads of the tensioner or clamp can be eliminated, while ensuring a strong grip.
  • twelve yams 14 are braided to form a 12-strand sub-rope 16, and subsequently twelve of these sub-ropes are braided together around the core to form the final rope.
  • Each yam is formed from multiple filaments of low-elongation material.
  • a specific example of a modified rope is a constmction of a comparatively large-diameter 12-strand rope having a diameter of at least 76mm, incorporating a crush-resistant core having a low-friction surface.
  • the twisted fibre yams have a comparatively small diameter such that no one of the yams has a cross-sectional area greater than about l/144th of a total cross-sectional area of the rope (excluding the core), so as to minimize the number of stages of twisting which are required to form each of said yams which is used in said large- diameter rope.
  • the construction of the rope uses a multiplicity of low elongation fibres twisted together to form a plurality of twisted yams, which are subsequently braided together to form a plurality of sub-ropes having a diameter of about 7/16 inch or greater, which are then subsequently braided together around the central core to form a rope having a circumference in the range of 127mm to 508mm.
  • the core comprises a jacketed bundle of polyester fibre having a cross-sectional area substantially matching that of the void area in which it resides.
  • the core is terminated at neither or one of the ends of the rope.
  • the material of the core is selected to accommodate higher elongation than the rope, to ensure that when the rope is loaded, the tensile loading on the core is always kept within its operational limits.
  • Figure 6 shows a cross section of the rope of Figure 5.
  • a small amount of void space 20 still exists, but the majority of the space is now occupied by the central core 100.
  • each of the braided sub-ropes may also contain their own core, although this is not illustrated in any of the accompanying figures.
  • sub- rope void spaces should be included in the calculation of the area ratios used herein to characterise different embodiments of the invention.
  • the large amount of void space, as shown in Figure 6 is substantially removed, due to the elongation of the rope, and the subsequent narrowing of its diameter, the fibres of the rope being compressed against the central core.
  • the improved rope is constmcted to ensure that the core does not carry any of the tensile load of the fibre rope. This is achieved by ensuring that the core is terminated at neither or one of the ends of the rope, that the friction between the load-bearing section of the rope (the fibres around the core) and the core itself is minimised.
  • the material selected for the core can also be selected to accommodate a higher elongation without damage than the rope itself.
  • the central core 100 is provided with a surface 110 that minimises the frictional forces between the core and the rope.
  • the presence of a central core means there is less void space for the rope fibres to fill during use of the rope in the aforementioned deployment equipment, thereby significantly reducing the likelihood of fatigue bending of the filaments.
  • Figures 7a and 7b are cross-sectional close up views of the central core with a low friction coating (not shown) and with a low friction jacket 120, respectively.
  • the additional coating or extruded low friction jacket 120 are constmcted from low coefficient of friction materials, such as polyethylene.
  • the fibre rope crushes as it is fed through a linear track tensioner, for example. Like in the case of elongation, the small amount of void space around the central core is no longer present, as the fibres of the rope are compressed against the central core. As before, the presence of a central core means there is less void space for the rope fibres to fill during use, significantly reducing the likelihood of fatigue bending of the filaments.
  • the very large diameter synthetic rope is capable of being serviced.
  • the ability to splice the individual braided yams permits cuts, frays, and other damage which occurs in service to be repaired using readily available tools and skills.
  • the rope can be made in section, the 12 x 12 constmction also permits a very long continuous rope .
  • the 12 x 12 rope construction also allows constmction with a much looser final braid (i.e., a lower of number of picks per length) than would be possible using only twisted yams, which is advantageous for certain applications and types of rope.
  • a very loose braid can result in the yams bunching and spreading apart, exposing the individual fibres to abrasion and damage.
  • the first braid i.e., the initial braiding of the yams
  • the central core also helps to provide coherence to the rope, when unloaded.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Ropes Or Cables (AREA)

Abstract

L'invention concerne une corde en fibres tressées (10) ainsi qu'un procédé de fabrication associé. Cette corde comprend une première extrémité et une seconde extrémité, ainsi qu'une âme (100) présentant une surface à faible coefficient de frottement. L'âme (100) est dérisoire par rapport à une fonction de résistance à la charge de tension, alors qu'elle résiste de manière significative à l'écrasement de la corde. La corde décrite dans cette invention est, de préférence, constituée de tresses elles-mêmes tressées ; elle comprend plusieurs fils (14) tressés en une corde secondaire (16), laquelle peut également comprendre une âme, et plusieurs cordes secondaires (16) tressées autour de l'âme (100).
PCT/EP2004/010624 2003-08-26 2004-08-25 Corde WO2005019525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US49803403P 2003-08-26 2003-08-26
US60/498,034 2003-08-26

Publications (1)

Publication Number Publication Date
WO2005019525A1 true WO2005019525A1 (fr) 2005-03-03

Family

ID=34216159

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2004/010624 WO2005019525A1 (fr) 2003-08-26 2004-08-25 Corde

Country Status (1)

Country Link
WO (1) WO2005019525A1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006133881A2 (fr) * 2005-06-13 2006-12-21 Dsm Ip Assets B.V. Fabrication de cable tresse
WO2010084520A1 (fr) 2009-01-23 2010-07-29 Sequoia Automation S.R.L. Câble pour générateur éolien troposphérique
WO2012134301A1 (fr) 2011-03-29 2012-10-04 Mørenot As Gaine pour un corps allongé
WO2014110599A1 (fr) 2013-01-14 2014-07-17 Actuant Corporation Corde à toron à faible frottement
WO2015161253A1 (fr) * 2014-04-17 2015-10-22 Actuant Corporation Corde ayant un toron à faible frottement
GB2532915A (en) * 2014-08-14 2016-06-08 Selex Es Ltd Tow cable
WO2017178484A1 (fr) * 2016-04-11 2017-10-19 Lankhorst Euronete Portugal, S.A. Corde de hissage
US10472765B2 (en) 2014-11-05 2019-11-12 Teufelberger Fiber Rope Gmbh Rope made of textile fiber material
EP3467197A4 (fr) * 2016-05-30 2020-02-19 Shinko Wire Company, Ltd. Câble métallique mobile
CN112626896A (zh) * 2020-11-27 2021-04-09 山东海工科技有限公司 单丝断线起毛纤维编织绳及其制作方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090277A (en) * 1958-05-21 1963-05-21 Bayer Ag Braided combined cordage
US5901632A (en) * 1997-06-10 1999-05-11 Puget Sound Rope Corporation Rope construction
US5931076A (en) * 1997-06-10 1999-08-03 Puget Sound Rope Corporation Rope construction

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3090277A (en) * 1958-05-21 1963-05-21 Bayer Ag Braided combined cordage
US5901632A (en) * 1997-06-10 1999-05-11 Puget Sound Rope Corporation Rope construction
US5931076A (en) * 1997-06-10 1999-08-03 Puget Sound Rope Corporation Rope construction

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006133881A3 (fr) * 2005-06-13 2007-04-19 Dsm Ip Assets Bv Fabrication de cable tresse
EA011982B1 (ru) * 2005-06-13 2009-06-30 ДСМ АйПи АССЕТС Б.В. Конструкция оплетённого каната
US7568419B2 (en) 2005-06-13 2009-08-04 Dsm Ip Assets B.V. Braided rope construction
US7789007B2 (en) 2005-06-13 2010-09-07 Dsm Ip Assets B.V. Braided rope construction
AU2006257385B2 (en) * 2005-06-13 2011-09-15 Dsm Ip Assets B.V. Braided rope construction
WO2006133881A2 (fr) * 2005-06-13 2006-12-21 Dsm Ip Assets B.V. Fabrication de cable tresse
US8539746B2 (en) 2009-01-23 2013-09-24 Kite Gen Research S.R.L. Tether for tropospheric aeolian generator
WO2010084520A1 (fr) 2009-01-23 2010-07-29 Sequoia Automation S.R.L. Câble pour générateur éolien troposphérique
US9175426B2 (en) 2011-03-29 2015-11-03 Morenot As Jacket for a lengthy body
WO2012134301A1 (fr) 2011-03-29 2012-10-04 Mørenot As Gaine pour un corps allongé
CN103492634A (zh) * 2011-03-29 2014-01-01 摩诺特公司 用于长物体的护套
US9951447B2 (en) 2011-03-29 2018-04-24 Morenot As Jacket for a lengthy body
US10227727B2 (en) 2013-01-14 2019-03-12 Actuant Corporation Rope having a low-friction strand
US9976251B2 (en) 2013-01-14 2018-05-22 Actuant Corporation Rope having a low-friction strand
EP2943612A4 (fr) * 2013-01-14 2017-01-18 Actuant Corporation Corde à toron à faible frottement
CN105026643A (zh) * 2013-01-14 2015-11-04 埃克特温特股份有限公司 具有低摩擦股丝的绳
WO2014110599A1 (fr) 2013-01-14 2014-07-17 Actuant Corporation Corde à toron à faible frottement
AU2014205084B2 (en) * 2013-01-14 2017-12-07 Enerpac Tool Group Corp. Rope having a low-friction strand
WO2015161253A1 (fr) * 2014-04-17 2015-10-22 Actuant Corporation Corde ayant un toron à faible frottement
GB2532915A (en) * 2014-08-14 2016-06-08 Selex Es Ltd Tow cable
US10472765B2 (en) 2014-11-05 2019-11-12 Teufelberger Fiber Rope Gmbh Rope made of textile fiber material
NL2016586B1 (en) * 2016-04-11 2017-11-01 Lankhorst Euronete Portugal S A Hoisting rope.
WO2017178484A1 (fr) * 2016-04-11 2017-10-19 Lankhorst Euronete Portugal, S.A. Corde de hissage
US10954629B2 (en) 2016-04-11 2021-03-23 Lankhorst Euronete Portugal, S.A. Hoisting rope
EP3467197A4 (fr) * 2016-05-30 2020-02-19 Shinko Wire Company, Ltd. Câble métallique mobile
CN112626896A (zh) * 2020-11-27 2021-04-09 山东海工科技有限公司 单丝断线起毛纤维编织绳及其制作方法
CN112626896B (zh) * 2020-11-27 2023-10-20 山东海工科技有限公司 单丝断线起毛纤维编织绳及其制作方法

Similar Documents

Publication Publication Date Title
US7296394B2 (en) Fluoropolymer fiber composite bundle
EP0974698B1 (fr) Câble tressé
EP1893798B1 (fr) Construction d'un câble tressé
AU2010353318B2 (en) Hybrid rope and process for producing same
US8341930B1 (en) Rope structure with improved bending fatigue and abrasion resistance characteristics
KR102098417B1 (ko) 하이브리드 로프 또는 하이브리드 스트랜드
FI109034B (fi) Nostovaijeri
EP2971331B1 (fr) Corde hybride à couple équilibré
Bosman et al. Airborne wind energy tethers with high-modulus polyethylene fibers
US20170328001A1 (en) Rope made of textile fibre material
WO2005019525A1 (fr) Corde
JP2019513916A (ja) ホイストロープ
US9360138B2 (en) Umbilical hose with improved cyclic ovalisation resistance
EP3422846A1 (fr) Câble sonar de ligne de démarcation à haute résolution
Banfield et al. Fatigue durability of nylon rope for permanent mooring design
US20230032622A1 (en) Bend fatigue resistant blended rope
Winkler et al. The polyester rope taut leg mooring concept: a feasible means for reducing deepwater mooring cost and improving stationkeeping performance
KR20240162115A (ko) 수명이 증가된 연성 케이블 및 연성 케이블을 생산하기 위한 방법
Chazot et al. Installation of Synthetic Mooring Lines Using Flexlay Vessels
SALAMA Materials for Mooring Systems
CN117604792A (zh) 一种三轴向编织增强系泊缆索
van Zonneveld et al. Endless Winding Technology for lightweight synthetic mooring lines
CN118891412A (zh) 具有提高的使用寿命的柔性缆绳以及用于制作柔性缆绳的方法
GIBSON Wire Rope and Cable
Longerich Synthetic Fiber Winch Lines

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase