LU81965A1 - ARTIFICIAL ROPE - Google Patents

Description

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Il '1 U Ij ^ J'-h .-. ND-DUCHË DE Jv. -.EMBOURG

£; v-vet N® - · - · ~ ...... '· 7 cZ> ïï- £ * e 1979 inHhr * „. .....

you .............. »RÆÆg Monsieur le Ministre. . tSfôfiSb de l'Économie Nationale et des Classes Movennes

Titre delivre: .................................

_________ Service de la Propriété Industrielle

------ LUXEMBOURG

Demande de Brevet d’invention I. Requête

La société dira: .. *: AAA. '' PAAR GrribH, Cceai'etr-asse 2, (1) 6664 l'irleï - ~ _f "'·;. <1 7 / -.,. <R Fédérale â * À% ïerc.ane * em-'Ss & it4e p.?r a.!. / Z. Freylinger, In? »E: -nst, en proprAvd.» 46 vue {2) du Luxer'rouvat apiesant en qualité de mandataires .. dépose ........ ce sê? I 'dêqeritre ml neuf emt soixante dix neuf (3) à ......... .............. heures, au Ministère de l'Économie Nationale et des Classes Moyennes, à Luxembourg: »1 * présente requête pour l'obtention d'un brevet d'invention concernant:. .................................................. .................................................. .................................................. .................................................. ..................................... (4) ^ "- at £ lare · en J> ssuir '£ nt la responsabilité de cette déclaration, eue l' (es) inventeurfs) est (sont): ..... ίίA.Ia / AL .7 '.:' ïLZÎh .......... .................................... (5) 2. la délégation de pouvoir, datée ^ de _____________ le ............

S. la description en langue ........ ri ................................... ...... de l'invention en deux exemplaires; 4..} *:?. · £ .................. planches de dessin, en deux exemplaires; 5. la quittance des taxes versées au Bureau de l'Enregistrement à Luxembourg, ie ^ ei-re na-rertre ri Z neuf cer.r sdrarte dix neuf revendique pour la susdite demande de brevet la priorité d'une (des) demande ( s) de (6) ............................................ ............................. déposée® en (7) dérurldaue Fédérale â'Allemagne ..........

ie .......; /. z.?r -'y ...: · -.......................... .................................................. ........... a »leur le Ne T ?? 66 661.6 "" la dérobante, Q, au nom ae ........................ * ............. .................................................. .................................................. .................................................. ...................................... — ........... .. (a) élit domicile pour lui (elle) et, si désigné, pour son mandataire, à Luxembourg ........................... .............

46 vue ci- ^ rrlëftdre-. Uixerâ: ~: - r ^ sollicite la délivrance d'un brevet d'invention pour l'objet décrit et représenté dans les annexes susmentionnées, - avec ajournement de cette délivrance à ............. ........................... mois.

....... S "..........................

~ J n. Procès-verbal de Dépôt

La susdite demande de brevet d'invention a été déposée au Ministère de l'Économie Nationale et des Classes Moyennes, Service de la Propriété Industrielle â Luxembourg, en date du: ____: j5C zed-re 16 2 -OC Ar -u-j 'Tt, *% \ Pr. Le Minière ^ A t_! Μ; · â ...... d heures / ^' Çg>. | 3 de l'Économie Nationfelè- ej / des Classes Moyennes, 3 — J - > · »" 'F SS j "iff · ta 11 m <-L · \% Ai - / * - V? /! A 6SQ07 VA / -----------: - u ——; -: --— -; ---

il 'BL-2768 / EM / BM

II Priority claim for patent infringement ν ”- ~ ί ·“ filed in the Federal Republic of Germany ”on December 13, 1978 under No. P 28 53 661.0

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/ PATENT APPLICATION. fj synthetic fiber rope Γ ii 'i.

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DRAHTSEILTfERK SAAR GmbH

i Casarstrasse 2 * 6654 Kirkel l-Limbach: B.R.D.

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ί: il ï "synthetic fiber rope" .j _____________ i The invention relates to a synthetic fiber rope made of aromatic •, polyamide, in particular poly-p-phenylene terephthalamide, with s layered over a heart element to the rope

Elements.

| jj The aromatic polyamides, in particular the poly-p-phenylene terephthalate, which has become known under the name "Kevlar"! ^ thalamid, have an extremely high modulus of elasticity compared to other plastics. The elastic strain is only 1.6 times that of j; Steel, while with other polyamides, e.g. Nylon, i makes about 25 times. This material can ... £ ...

Not only can it be used as a load-bearing insert in steel cables, as described in DE-OS 27 08 904, or in combination with other metals, such as with electrical cables from deep-sea ropes, but also alone or in combination with other plastics, such as the crane rope according to DE-AS 24 55 273.

The synthetic fiber ropes based on aromatic polyamides *; Like the textile ropes made from natural fibers, they are light and flexible, but with their strength they are: · on the side of the wire ropes. In DE-AS 24 55 273 in addition to the large tear length or the low Ge -;> i weight, flexibility and high tensile strength i * 1 ί; · ', _______ - 4 -. b j {! ».

! V ·! R j for the rope proposed there also has a long service life, in particular when running over small rope pulleys, and with regard to the long service life high abrasion resistance and flexural fatigue strength; To increase the internal abrasion resistance when running over small pulleys, the strands or threads of the rope should be impregnated with plastic, for example with polyurethane.

The invention has for its object to further increase the life of a synthetic fiber rope of the type mentioned.

According to the invention, for this purpose it is provided that the synthetic fiber rope according to a construction known for wire ropes has a plurality of layers, the elements of which run parallel to one another from layer to layer.

This measure is based on the knowledge and the idea that synthetic fiber ropes made of aromatic polyamides, regardless of their fiber structure, should not, as before, be made according to the type of textile rope and with the strands crossed, but in the parallel style known as a special type of wire rope expose the material to as little lateral pressure as possible. The parallel running of strands of different layers lying on top of each other creates line contact between the layers and thus a significantly lower surface pressure than with point contact, which results from crossing the strands. It has not yet been seen or at least ignored that the fibers made from aromatic polyamides, in contrast to the other plastic fibers and the natural fibers, are at least sensitive to transverse pressures to an extent that reduces the service life if it is not taken into account: strands made from aromatic polyamide fibers have so far been used not only when stranding. - 2 - «crossed, but even braided, which leads to greater sensitivity to breakage.

In addition, the aromatic polyamides for ropes in parallel design represent a particularly advantageous choice of material in that they overcome the difficulty of elongation that is always present with steel ropes! compensation between stranded parallel layers! due to their greater stretch greatly reduce or practically omit them completely. This enables j u.a. an easier lay length adjustment of strands! different layers in such a way that the fiber strands j: superimposed strand layers do not overlap.

Finally, the invention has the advantageous aspect of a rope without damage, i.e. Without creating weak points through overlaps, divide into a larger number of layers and thereby be able to make the rope elements thinner so that the monofilaments are not exposed to different tensile stresses during bending. The mentioned elements of the rope will usually be strands made of fiber strands. However, they can also be ropes themselves or only, preferably sheathed, fiber strands in which the fibers, which are always in the form of "continuous monofilaments, are knotted".

If the elements are multi-layer strands, the fiber strands forming the layers preferably also run parallel to one another from layer to layer, i.e. they are parallel strands.

For this, all that applies once again is what was said above for the parallel design of the rope. The advantage of the combination of material / parallel lay is even more significant here, as there is no stretch adjustment of the layers in the parallel lay strands. - 3 -. ··. »'" · »* - is possible with each other, while you can still make certain adjustments in a rope through different lay lengths of the strands of the different layers.

The fiber strands tied into strands are preferably themselves tied, but can also be sheathed bundles of parallel fibers. Depending on the circumstances, primarily with a thin diameter, braided fiber strands or fiber strands made of fiber bundles glued in themselves may also be possible. Braided

However, fiber bundles have undesirable overlaps, and parallel fiber bundles are disadvantageous in that the monofilaments are subjected to different tensile loads due to bending. In beaten fiber bundles, the monofilaments can compensate for such different tensile loads by longitudinal displacement; In this respect, they should not be glued, at least not in such a way that the mobility against each other is blocked.

If the elements mentioned are ropes already made from strands, the fiber strands preferably also run parallel to one another in their strands, if they are multilayered, from layer to layer. If the strands are arranged in several layers in the element, the same applies accordingly.

In order to further reduce the surface pressure at the contact lines, in an advantageous embodiment of the invention the elements of the rope have a smooth surface than would result from a circular cross section of the fiber strands or strands forming the elements. As a result, the aforementioned line contact is continuous, while in the case of normal, due to the rounding of the fiber strands or

I strands corrugated surface of the strands or ropes the \ 1 · h

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contact between the elements only on a point,

Unie is given.

The desired smooth surface can e.g. can be created in that the elements are given a coating, preferably extruded, with a smooth surface.

However, the fiber structure of the material also allows * other things. The fiber strands only need to be laid slightly loosely and the strands made from these fiber strands are somewhat firmer; then they adapt; Fiber strands in the strands under deformation and formation; | a largely dense strand structure inside! each other, and on the outside a fairly smooth surface is formed. If the fiber strands are sheathed bundles of parallel fibers, all of this results in any case anyway »| going by itself.

j You can also use fiber strands, such as profile wires, e.g. by I w * gluing as profiles that form a dense | Allow the strand and / or a strand with a smooth surface j to lay.

i! I If the elements of the rope itself are already ropes, 1.

i | speak for the strands of which these ropes are made.

I Are the elements of the rope loose in themselves? beat, the mentioned line widening! touch to surface contact.

ji Finally, constructions according to the invention, $ primarily those of a less complicated structure, f ji with all its advantages itself can be an element of a | ?! Be rope. As an element of a rope, everything comes first! the simple implementation, the elements of which k. are directly fiber strands and which are also called l ’- 5Γ - ii

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View stranded wire by equating the fiber strand with a wire.

The drawing shows an embodiment of the invention.

It shows a wire rope made in parallel from parallel lay strands.

The rope consists of a heart strand 1, an inner> strand layer 10 of five strands 2 and five smaller ones

Monofilament strands 3 and an outer strand layer 20 of ten identical strands 4 stranded parallel to the inner strand layer 10.

The cardiac strands 1 are single-layer strands 1 + 6. The strands 2 are two-layer parallel lay strands 1 + 6 + 12. The monofilament strands 3 are lightly beaten, parallel monofilament bundles. The strands 4 are two-layer parallel lay-up strands (seal strands) 1 + 9 + 9.

The strands 1, 2 and 4 consist of monofilament strands made of poly-p-phenylene terephthalamide, which are loosely twisted. In the case of the injury, the previously round monofilament strands with their cross sections have adapted to one another. In the interior of the strands, the monofilament strands adjoin one another largely without gaps. The outer sides of the outer monofilament are flattened. The strand circumference is therefore relatively smooth and shows only small grooves 5 between the individual monofilament strands.

The monofilaments are made of "Kevlar 49" grade poly-p-phenylene terephthalamide.

s The density of the strands as well as the parallel design of the \ ί t

Ropes increase the material cross-section and thus reduce the space requirement of the rope on winches etc.

Different types of Mcnofil strands and strands can also be combined with one another.

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Claims (7)

1. synthetic fiber rope made of aromatic polyamide, in particular poly-p-phenylene terephthalamide, with elements laid in layers over a heart element to form the rope, characterized in that the synthetic fiber rope has a plurality of layers (10; 20) according to a construction known for wire ropes, the elements ( 2; H) run from layer (10) to layer (20) parallel to each other *. 2. Synthetic fiber rope according to claim 1, characterized in that said elements are strands made of fiber strands (2; 4). 3. Synthetic rope according to claim 2, characterized in that the fiber strands in the strands (2; 4) are grounded in a plurality of layers and likewise run parallel to one another from layer to layer. H. synthetic fiber rope according to claim 2 or 3, characterized in that the strands of fiber laid into strands (2; H) are braided or, preferably, are themselves laid or are sheathed or self-adhesive fiber bundles. ♦ 5. Synthetic fiber rope according to claim 1, characterized in that the said elements are strands made of strands, wherein the fiber strands are preferably arranged in a plurality of layers in the strands and also run parallel to one another from layer to layer. 6. Synthetic fiber rope according to claim 1, characterized in that the said elements, preferably knitted and / or sheathed, are fiber strands. f - -? - y V ·: \ »j 7. synthetic fiber rope according to one of * claims 1 to 6, characterized in that the elements (2; 4) j * have a smoother surface than the circular cross section of the elements! "(2; 4) forming fiber strands or strands. 8. synthetic fiber rope according to claim 7, characterized in that the fiber strands or strands in! are loosely beaten or the fiber strands I i: jj are designed as profiles or the elements Ίί jj have a, preferably extruded, sheathing jj with a smooth surface. il li ”, 9. Synthetic fiber rope according to one of claims 1 to 8, j * characterized in that the elements in 's are loosely beaten. "Ijj ίι io. Synthetic fiber rope according to one of claims 1 to 9, in particular according to claim 8, characterized gekenn-jj; shows that it is itself part of a rope. I 'i · ii; .s »> i i i · i - 5 -