EP3638844A2 - Chaîne constituée de boucles flexibles reliées, ainsi qu'appareil et procédé de fabrication desdites boucles - Google Patents

Chaîne constituée de boucles flexibles reliées, ainsi qu'appareil et procédé de fabrication desdites boucles

Info

Publication number
EP3638844A2
EP3638844A2 EP18816740.7A EP18816740A EP3638844A2 EP 3638844 A2 EP3638844 A2 EP 3638844A2 EP 18816740 A EP18816740 A EP 18816740A EP 3638844 A2 EP3638844 A2 EP 3638844A2
Authority
EP
European Patent Office
Prior art keywords
strand
flexible
loop
flexible loop
around
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Withdrawn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
EP18816740.7A
Other languages
German (de)
English (en)
Inventor
Kjell Magne VEKA
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.)
Van Beest Norway As
Original Assignee
Van Beest Norway As
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 Van Beest Norway As filed Critical Van Beest Norway As
Publication of EP3638844A2 publication Critical patent/EP3638844A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B7/00—Details of, or auxiliary devices incorporated in, rope- or cable-making machines; Auxiliary apparatus associated with such machines
    • D07B7/16—Auxiliary apparatus
    • D07B7/165—Auxiliary apparatus for making slings
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • 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
    • B66C1/125—Chain-type slings
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B3/00—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
    • D07B3/02—General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material in which the supply reels rotate about the axis of the rope or cable or in which a guide member rotates about the axis of the rope or cable to guide the component strands away from the supply reels in fixed position
    • D—TEXTILES; PAPER
    • D07—ROPES; CABLES OTHER THAN ELECTRIC
    • D07B—ROPES OR CABLES IN GENERAL
    • D07B5/00—Making ropes or cables from special materials or of particular form
    • D07B5/005—Making ropes or cables from special materials or of particular form characterised by their outer shape or surface properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00—Chains
    • F16G13/12—Hauling- or hoisting-chains so called ornamental chains
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G15/00—Chain couplings, Shackles; Chain joints; Chain links; Chain bushes
    • F16G15/12—Chain links
    • 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
    • D07B2201/1004—General structure or appearance

Definitions

  • the invention concerns a flexible loop, a chain formed of a plurality of linked flexible loops, and an apparatus for forming a flexible loop.
  • the flexible loop is made up of fibers, such as polymeric fibres, synthetic plastic material, such as polyester, nylon or Kevlar having extremely high tensile strength to weight ratio.
  • the chain is useful for mooring or anchoring boats and other floating vessels, to lash cargo in road, rail, water and air transportation or for conveying, hoisting, suspending or lifting applications.
  • Chains made up of non-metallic lifting loops are well known and increasingly used for lifting, suspending, hoisting and securing cargo, as well as for anchoring purposes at sea.
  • the prior art includes RU 2130421 CI, which describes methods of making a twisted rope, in which strand elements are twisted around a core.
  • the prior art also includes US 4 779 411, which describes a non-metallic rigging chain formed with a plurality of linked flexible loops.
  • Each loop has a core which consists of a continuous strand of non-metallic material coiled upon itself.
  • the coiled core material is enclosed in a sheath of a woven outer fabric.
  • the sheath may be heavy canvas or a synthetic plastic fabric, such as nylon or polyester.
  • the core is preferably synthetic plastic material, such as polyester, nylon or Kevlar having extremely high tensile strength to weight ratio.
  • the sheath may be wrapped about the core, its ends overlapped and its side edges stitched longitudinally. Except for the two terminal loops of each chain, one loop is formed by coiling a continuous strand of core material in linked relation within a pair of completed loops. The length of each chain is determined by the diameter of its loops and the number of loops linked together.
  • the prior art also includes WO 2008/089798, which describes a chain suitable to moor or anchor boats, to lash cargo in road, rail, water and air transportation or for conveying, hoisting, suspending or lifting applications.
  • the chain comprises a plurality of interconnected links, and at least part of the links comprise polyolefin multifilament yarns.
  • the yarns comprise ultrahigh molecular weight polyethylene (UHMWPE) fibers.
  • UHMWPE ultrahigh molecular weight polyethylene
  • the prior art also includes WO 2009/115249, which describes a chain having a plurality of first links interconnected with a plurality of adjacent links.
  • the first links comprise polymeric multifilament yarns and have a first thickness at least at the portion where they interconnect with the adjacent links, and the adjacent links have a second thickness at least at the portion where they interconnect with the first links.
  • the ratio between the first and second thicknesses is at least 1.2.
  • the invention further relates to the use of the chain for storing, securing, and handling cargo, e.g. in lifting, hauling and rigging.
  • the prior art also includes WO 2015/086627, which describes a chain having a plurality of chain links comprising a polymeric fibre.
  • the invention described further relates to the use said chain for storing, securing, lashing and tying down for handling and transporting cargo, in lifting and hoisting, logging, hauling and rigging, propulsion and driving, mooring, cargo-hold of an aircraft or naval ship.
  • the present invention provides certain improvements over the prior art, both in the manufacturing process and the load-bearing capabilities.
  • the method comprises either
  • a method of forming a flexible loop comprising one or more continuous flexible strands, characterized by coiling the strand upon itself multiple revolutions to form a plurality of coils which collectively form a bundle of a predetermined thickness; and forming a mantle by applying a stitching procedure or a thread winding procedure.
  • the stitching procedure may employ a puller-feed sewing technique.
  • the methods comprise forming at least one region of increased thickness, having a maximum thickness. In one embodiment, two regions of increased thickness are formed at diametrically opposite sides of a flexible loop.
  • the thickness ratio (t 2 /ti) is in the range between 1.5 and 2.0.
  • the strand may be selected from the group comprising a string, single filament, yarn, multifilament yarn, rope, line, and pre-twisted lines.
  • the strand material may be a fibre material, such as a high-performance fibre, such as a polymeric fibre.
  • a method of forming a chain comprising a plurality of flexible loops formed by the methods according to the invention, characterized by forming a subsequent flexible loop comprising one or more continuous flexible strands, and coiling the strand upon itself multiple revolutions and for each revolution passing the strand through a prior made flexible loop.
  • the chain of flexible loops is subjected to a stretching force.
  • a flexible loop comprising one or more continuous flexible strands, manufactured according to the methods according to the invention.
  • - twisting means configured and operable to move the strand guiding means a given number of times around itself per revolution around a twisted means periphery.
  • the twisting means comprises a ring member rotatably arranged in a body
  • said body having a tubular ring shape, dimensioned such that the ring member may rotate inside said body; said body comprising a helical slit;
  • the strand guiding means comprises a plurality of strand guides having a strand- conveying member fixedly connected to the ring member and extending through the slit and comprising at least one strand-conveying member.
  • the strand-conveying member is arranged outside of the body.
  • the helical slit makes a plurality of turns around the body per revolution around said body.
  • a twisted flexible loop formed by the method according to the invention. It is also provided a flexible loop comprising one or more continuous flexible strands, characterized in that the strands are twisted and arranged in a helical fashion around an imaginary centre line to form a plurality of coils which collectively form a bundle of a predetermined thickness.
  • the invention provides a process of manufacturing a flexible loop and a chain made up of such loops, which is considerably more efficient the prior art methods.
  • the process is suitable for automation.
  • the invented flexible loop comprises an integrated spacer (radius controller) which contributes to maintaining the loop opening geometry when the loop is subjected to loads.
  • Figure 1 is a perspective view of a loop winding apparatus of a first
  • Figure 2 corresponds to figure 1, and shows a partial build-up of a flexible loop of a first embodiment
  • Figure 3 is a perspective view of a variant of the loop winding apparatus illustrated in figures 1 and 2, at the inception of a loop winding process according to a second method;
  • Figure 4 corresponds to figure 3, and shows a partial build-up of a flexible loop of the first embodiment
  • Figure 5 is a perspective view of a loop winding apparatus of a second embodiment
  • Figure 6 is a perspective view of a variant of the loop winding apparatus illustrated in figure 5;
  • Figure 7 is a side view of the loop winding apparatus illustrated in figure 6;
  • Figure 8 is a sectional view along section line A-A in figure 7;
  • Figure 9 is a perspective view of the loop winding apparatus illustrated in figure 5, at the inception of a loop winding process according to a third method
  • Figure 10 corresponds to figure 9, and shows a partial build-up of a flexible loop of a second embodiment
  • Figure 11 is a perspective view of a flexible loop formed by the loop winding process according to the third method
  • Figure 12 is a sectional side view along section line B-B in figure 11, in the plane of the flexible loop
  • Figure 13 is a perspective view of a flexible loop formed by the loop winding process according to the first or second method, and illustrates two methods of applying an outer mantle;
  • Figure 14 is a perspective view of a stitching procedure to form a mantle on a flexible loop
  • Figure 15 is an enlarged view of the dotted square in figure 14;
  • Figures 16 and 17 correspond to figure 15, and illustrate further steps in the stitching procedure
  • Figure 18 is a perspective view of a flexible loop formed by the loop winding process according to the first or second method, and a stitching procedure
  • Figures 19 and 20 are schematic side views of two linked flexible loops, in which at least one of the loops has been subjected to a stitching procedure to form regions of increased thickness on the loop;
  • Figure 21 is a perspective view of a gripper device arranged above a loop winding apparatus of the first embodiment, wherein the winding apparatus has completed the forming of a flexible loop according to the first or second method;
  • Figures 22 and 23 are a top view and a perspective view, respectively, of the gripper device removing the completed flexible loop from the loop winding apparatus;
  • Figure 24 is a perspective view of the loop winding apparatus of the first embodiment in the process of forming a second flexible loop of a first embodiment, while the first flexible loop is supported by the gripper device and arranged such that the second flexible loop is linked to the first flexible loop as the second flexible loop is being formed;
  • Figure 25 is corresponds to figure 24, and illustrates a subsequent step in which a fourth flexible loop is formed and linked to a third flexible loop; and
  • Figure 26 is a schematic side view illustrating a procedure of forming chain of flexible loops according to the invention, and illustrates also a stretching procedure.
  • Figure 1 shows a loop winding apparatus 3 of a first embodiment, comprising four rotatable spools 4 arranged on a base 5 and having a fixed guiding eye 2 for a strand 1. It should be understood that the apparatus may comprise fewer or more spools.
  • the flexible loop may thus comprise one or more strands. Required power and control means, motors, gears, etc., are not shown as these are well known in the art.
  • the strand 1 has been placed around the spools 4 and the free end 1 ' has been connected to the strand by cluing, welding, tying or any other means or process known in the art, thereby forming an initial coil la.
  • the loop winding process is accomplished by rotating the spools a number of revolutions as indicated by arrows R in figure 2, thereby forming plurality of coils lb to make up a flexible loop 6' of a first
  • the strand 1 is supplied from a bobbin (not shown) and the tension in the strand is controlled in a manner which is known in the art. It should be understood that the number of revolutions R will determine the number of coils lb (i.e. number of times the strand is arranged around the spools), and hence the thickness of the flexible loop body (also referred to as a bundle 23, see e.g. figure 13).
  • the strand supplied from the bobbin is cut and the free end is secured to the loop by cluing, welding, tying or any other means or process known in the art.
  • Figures 3 and 4 show a variant of the loop winding apparatus illustrated in figures 1 and 2, in which the spools are stationary but a rotating ring 7 is arranged around the spools.
  • the rotating ring 7 comprises a hole 7a through which the strand 1 is inserted prior to commencing the loop winding process. Then, the strand free end is arranged around the spools and connected to the strand as described above with reference to figure 1, forming an initial coil la, and the rotating ring 7 is rotated.
  • the flexible loop may thus comprise one or more strands. Required power and control means, motors, gears, etc.
  • the strand 1 is supplied from a bobbin (not shown) and the tension in the strand is controlled in a manner which is known in the art. It should be understood that the number of revolutions R will determine the number of coils lb (i.e. number of times the strand is arranged around the spools), and hence the thickness of the flexible loop body (also referred to as a bundle 23, see e.g. figure 13).
  • the strand supplied from the bobbin is cut and the free end is secured to the loop by cluing, welding, tying or any other means or process known in the art.
  • FIGS 5 to 8 show another embodiment of a loop winding apparatus 8 according to the invention.
  • This loop winding apparatus 8 comprises a ring-shaped and tubular outer body 12 (configured for being supported by a base 5, see figure 9).
  • a helical slit 9 is formed in the body 12, and an inner ring member 11 is arranged inside the outer body 12 and arranged to move inside the body.
  • Required power and control means, motors, gears, etc. for rotating the inner ring member 11 inside the outer body, are not shown as these are well known in the art.
  • Connected to and supported by the inner ring member 11 are a plurality of strand guides 10.
  • Each strand guide 10 comprises a base 10a which is connected to the ring member 11, a stem 10b which is connected to the base 10a and extending through the helical slit 9, and a strand-conveying member 10c protruding beyond the slit (see figure 8).
  • the strand-conveying member 10c is an arc-formed member with a gap lOd through which a tread may be passed.
  • the strand-conveying member may have other shapes.
  • Figure 5 shows a variant in which the helical slit 9 makes three turns (a helical pattern with three spirals) around the outer body 12 tubular.
  • the slit 9 spirals three times around the tubular per revolution around the outer body.
  • a revolution in this context should be understood as movement along the outer body 12 circumference (see reference letter R in figure 10).
  • Figures 6-8 show a variant in which the helical slit 9 makes one turn (a helical pattern with one spiral) around the outer body 12.
  • the invention shall not, however, be limited to number of helical slit turns (spirals). Also, in a practical application, fewer or more strand guides 10 than those illustrated, may be used. The invention shall not be limited to a specific number of strand guides.
  • the loop winding apparatus 8 is supported by a base 5.
  • a strand 1 has been entered through a fixed guiding eye 2 and arranged in the multiple strand guides 10 around the outer body 12.
  • the strand free end (not shown in figure 9) has been connected to the strand in a manner known in the art, such that the strand 1 forms an initial coil la.
  • the flexible loop may thus comprise one or more strands.
  • the slit 9 spirals four times around outer body 12 tubular, i.e. the outer tubular circumferential axis.
  • the invention shall not be limited to this number. It shall be understood that the number of turns (spirals) that the slit makes, determines the number of times a strand is twisted around itself during the formation of the flexible loop.
  • each strand guide (or groove) will spiral a given number (n) of times around the twisted structure per revolution (R) around the twisted structure periphery; the number n being equal to the number of twists in the ring-shaped structure.
  • the strand guide 10 or groove, or any other technically equivalent device or structure may be referred to as a strand guiding means 10, and the tubular outer body 12, its associated helical slit 9 and inner ring member 11, or any other technically equivalent devices or structure, may collectively be referred to as twisting means 9, 1 1, 12.
  • the inner ring member 11 (not shown in figure 10) is rotated, causing also the strand guides 10 to rotate (indicated by arrow "R") around the outer body 12, following the helical slit 9.
  • the strand 1 is supplied from a bobbin (not shown) and the tension in the strand is controlled in a manner which is known in the art.
  • the rotational movement (revolutions) R of the strand guides 10 causes the formation of a twisted flexible loop 6" of a second embodiment. It will be understood that the number of turns (spirals) that the slit makes around the outer body tubular per revolution R determines the number of times the strand 1 is twisted around the tubular during the formation of the flexible loop.
  • This embodiment of the flexible loop 6" is thus twisted and will in the following be referred to as such. It should also be understood that the number of revolutions R of the strand guides will determine the number of coils lb (i.e. the number of times the strand is arranged around the tubular outer body 12), and hence the thickness of the flexible loop body (also referred to as a bundle 23, see e.g. figure 15).
  • the strand supplied from the bobbin is cut and the free end is secured to the loop by cluing, welding, tying or any other means or process known in the art.
  • the flexible loop 6' of the first embodiment, described above, will in the following be referred to as a non-twisted flexible loop.
  • Lines 13 in figures 9 and 10 indicate that the outer body 12 may be split into two parts 12a,b. Although not illustrated, it should be understood that the inner ring member 11 may be split into two parts in a similar manner. The methods and means by which the outer body parts and ring member parts may be connected and disconnected need not be discussed here, as they are known in the art.
  • Figure 11 shows a twisted flexible loop 6" in a completed state after the outer body parts and the inner ring member parts have been split, and the twisted flexible loop 6" has been removed from the winding apparatus.
  • Reference number 1" denotes a portion of the strand 1 which has been coloured grey, in order to visualize how the strands are twisted.
  • FIG 12 illustrates a half of a twisted flexible loop 6", cut to visualize how the strands are twisted and arranged in a helical fashion around an imaginary centre line CL.
  • This imaginary centre line corresponds to the circumferential centre line of the outer body 12 tubular, i.e. the circumferential centre line around which the strand guides 10 rotate in the above mentioned helical pattern.
  • Figure 13 illustrates how a non-twisted flexible loop 6' is wrapped with a tape 14 and a wrapping thread 15 around the body (also referred to as a bundle) 23, utilizing a toroidal winding technique, in order to form respective mantles 18 to protect the individual strands and preserve the integrity of the loop.
  • a tape 14 or only the wrapping thread 15 may be applied to the flexible loop, in other words, they are independent alternatives.
  • similar tape and wrapping thread may be applied to the twisted flexible loop, when the flexible loop has been removed from the winding apparatus 8.
  • Figures 14 to 17 illustrate a stitching procedure on a twisted flexible loop 6" to form a mantle 18 on the entire flexible loop (not shown) or on portions of it.
  • the mantle 18 is formed by winding or stitching one or more threads around (not through) the flexible loop body 23.
  • a stitching procedure is illustrated, which comprises a so-called "puller-feed sewing" technique, which per se is known in the art.
  • the needle 16 moves in a zig-zag pattern Z across the flexible loop body (also referred to as a bundle) 23, feeding a first sewing thread 17a and picking up a second sewing thread 17b.
  • Figure 18 illustrates a similar stitching procedure applied on a non-twisted flexible loop 6' .
  • the mantle 18 serves to protect the loop body 23 and to provide a structural outer body for the loop body.
  • a problem associated with chains made up of flexible loops is a tendency of the loops to lose their original geometry. This may lead to stress hot spots when the chain is subjected to loads.
  • This phenomenon is well known in the design of wire rope and associated drums (onto which the wire rope is to be spooled):
  • the relationship between the wire rope diameter d as it is bent around the drum of a diameter D is expressed as a Old ratio.
  • a system having a small Old ratio aggravates the wire rope bending motion, which may cause fatigue, irregular wear and accelerated deterioration. This is also a problem with chains made up of flexible loops.
  • the portions K indicate regions of increased thickness, hereinafter referred to as bundle thickness.
  • bundle thickness regions of increased thickness
  • the flexible loop is less susceptible to loop geometry change, due to the material added here, and therefore contributes to maintaining a comparably high thickness ratio (comparable to the analogous Old ratio describe above).
  • the regions K typically at opposite ends of each flexible loop, serve as radius control means and contribute to maintaining an "open" loop, illustrated by the arrows W in figures 19 and 20. More specifically, referring to figure 19, the bundle thickness is increased from ti, which is the thickness of the flexible loop bundle as formed (e.g. as described above with reference to figures 1 to 10) to a maximum bundle thickness t 2 .
  • the increase in thickness is preferably gradual, providing a suitable taper between ti and t 2 .
  • the skilled person will understand that the absolute values of ti and t 2 is determined based on the intended use of the chain of flexible loops. Favourable thickness ratios (t 2 /ti) are, however, considered to be in the range between 1.5 and 2.0. The invention shall, however, not be limited to this range.
  • the regions K of increased loop thickness may be formed by winding one or more threads around the loop body 23, or by the stitching procedure described above with reference to figures 14 to 18, or by the toroidal winding procedure described above with reference to figure 13, using thread, tape or a combination of both.
  • regions K of increased loop bundle thickness is equally applicable to any of the flexible loops (i.e. non-twisted 6' and twisted 6") described above, and may be performed while the flexible loop is supported by its winding apparatus (i.e. 3 or 8), or after it has been removed from its winding apparatus.
  • the finished flexible loop may be subjected to coating or impregnation by a resin, controlled heat-setting, or similar. Such coating or impregnation may be applicable even to flexible loops in which no regions of increased loop bundle thickness have been formed.
  • a gripper device 19 with movable gripper arms 20 is arranged above the loop winding apparatus 3.
  • the arrows indicate the movements of the gripper device 19, gripper arms 20 and spools 4, so as to remove a completed flexible loop 6' from the winding apparatus 3.
  • a new flexible loop 6' 2 may be formed by the same process as described above with reference to figures 1 to 4 and 13 to 20.
  • Figure 25 illustrates a chain forming sequence, in which consecutive flexible links 6' 2-4 are formed and linked to a preceding flexible link.
  • Figure 26 illustrates a procedure of forming a chain of flexible loops 6 1-n . It should be understood that this procedure is applicable to both non-twisted flexible loops 6' and twisted flexible loops 6".
  • Arrow M indicate chain movement
  • arrows T indicate tension provided by cogwheels 21a,b, intermittently rotating in opposing direction Ri, R 2 to impose a stretching force on (and hence shape) the individual flexible loops.
  • the tension T is dimensioned according to the loop material type, loop thickness, and intended use.
  • a resin may be applied to the stretched flexible loop, for example in a processing facility 22. Controlled heat-setting may also be used to increase the loop's tenacity and to fixate the shape of the loops.
  • a suitable strand material is a high-performance fibre, such as a polymeric fibre
  • the invention is applicable to any fibre type.
  • a preferred material for flexible loops intended for load- carrying applications is polyethylene, such as ultrahigh molecular weight polyethylene (UHMWPE), but the invention shall not be limited to this material.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ropes Or Cables (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Wire Processing (AREA)
  • Sheet Holders (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

La présente invention concerne un procédé de formation d'une boucle souple (6") comprenant un ou plusieurs brins flexibles continus (1), consistant à enrouler le brin (1) sur lui-même sur de multiples tours (R) pour former une pluralité de bobines (1b) qui forment collectivement un faisceau (23) ayant une épaisseur prédéterminée ((t1) ; et pour chaque tour (R), faire passer le brin (1) autour d'une ligne centrale imaginaire CL au moins une fois de manière à former un faisceau torsadé (23). Dans un mode de réalisation, le procédé consiste à former un manteau (18) en appliquant une procédure de couture. Un appareil d'enroulement (8) de brin (1) comprend un élément annulaire (11) agencé de manière rotative dans un corps (12), ledit corps (12) ayant une forme annulaire tubulaire dimensionnée de telle sorte que l'élément annulaire (11) peut se mettre en rotation (R) à l'intérieur dudit corps ; ledit corps comprenant une fente hélicoïdale (9). Une pluralité de guides de brin (10) ayant un élément de transport de brin (10c) raccordé de manière fixe à l'élément annulaire (11) s'étendent à travers la fente (9) et comprennent au moins un élément de transport de brin (10c). Une chaîne peut être formée en interconnectant une pluralité de boucles flexibles.
EP18816740.7A 2017-06-13 2018-06-08 Chaîne constituée de boucles flexibles reliées, ainsi qu'appareil et procédé de fabrication desdites boucles Withdrawn EP3638844A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20170954A NO20170954A1 (en) 2017-06-13 2017-06-13 A chain formed of linked flexible loops, and an apparatus and a method of manufacture of said loops
PCT/NO2018/050150 WO2018231063A2 (fr) 2017-06-13 2018-06-08 Chaîne constituée de boucles flexibles reliées, ainsi qu'appareil et procédé de fabrication desdites boucles

Publications (1)

Publication Number Publication Date
EP3638844A2 true EP3638844A2 (fr) 2020-04-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP18816740.7A Withdrawn EP3638844A2 (fr) 2017-06-13 2018-06-08 Chaîne constituée de boucles flexibles reliées, ainsi qu'appareil et procédé de fabrication desdites boucles

Country Status (3)

Country Link
EP (1) EP3638844A2 (fr)
NO (1) NO20170954A1 (fr)
WO (1) WO2018231063A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115430118B (zh) * 2022-10-13 2023-12-08 东莞特大纺织科技有限公司 确保链及其制备方法

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JPS6039798B2 (ja) * 1982-12-31 1985-09-07 白井実業株式会社 エンドレススリングの製法
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