WO2017174774A1

WO2017174774A1 - Kernmantle rope

Info

Publication number: WO2017174774A1
Application number: PCT/EP2017/058366
Authority: WO
Inventors: Rudolf Kirth; Susanna Schiemer
Original assignee: Teufelberger Fiber Rope Gmbh
Priority date: 2016-04-08
Filing date: 2017-04-07
Publication date: 2017-10-12

Abstract

The invention relates to a kernmantle rope (1) comprising a core (2) made of one or more strands (3, 4) of a load-bearing textile material, said rope having two ends (5, 6), and characterised in that the rope has a section (A, A'), positioned at a distance from at least one of said ends (5, 6), in which the rope has a higher dynamic capacity according to EN1891A:1998 than it does in the remaining run of the rope, and in which the core comprises a greater amount of load-bearing textile material than it does in the remaining run of the rope.

Description

Sheath-core cable

The present invention relates to a core-sheath rope, which in particular as

Climbing rope is usable.

Ropes of a textile fiber material, which are present in a core-shell construction, are known per se. Such a rope consists of one or more, for example, braided or beaten core (s) of textile fiber material, which is covered by a textile fiber material as a sheath, e.g. is braided or are.

For the purposes of the present invention, the term "core" will be understood hereinafter to mean both a single core and a plurality of cores present in a cable.

The term "textile fiber material" means that the essential components of the core or shell, in particular its supporting elements, consist of textile fiber material, such as strands of synthetic fibers

Have components of other materials, e.g. the rope or rope components impregnating materials or even individual non-textile strands with special function, e.g. for transmitting electrical signals.

Climbing ropes are usually core-sheath ropes. As a rule, they consist of a protective jacket, which encloses a core of at least one, usually several strands of load-bearing and shock-absorbing textile fiber material. By "shock-absorbing" the skilled person understands the property of a fiber material to absorb energy.To be able to absorb energy, ie to be shock-absorbing, a fiber material must be load-bearing and vice versa.The ability to absorb energy, ie to be shock-absorbing, is also called "Dynamic load capacity".

Woodhead Publishing, 2004, teaches that nylon fibers used in the core of a rope used as a climbing rope are steamed and thereby shrunk to increase energy absorption treated the entire length of the rope in the same way.

Especially in climbing sports, the weight of the rope used plays a big role. The climber has to carry the rope, ie every weight saving has a positive effect on the performance of the athlete. There is therefore a trend to use ropes with a smaller diameter (about 9 mm and below), but what the climber subjectively may find uncomfortable, he must expect to fall into the (very thin) rope. Falls usually affect the last 5 m to 10 m of the rope. In this area, the rope is thus more frequently claimed due to falls than in the other areas.

In addition, it would be advantageous for the climber, if he could see the end of his rope haptically when rappelling and thus would be warned a few meters before. This is solved today by the fact that the rope end in the mantle is designed to be haptically different from the rest of the rope. For example, thicker staple yarns or textured yarns are used in the sheath at the end of the rope. The end of the rope feels different and usually gets thicker with the change of the coat.

DE 10 2011 017 273 A1 describes a climbing rope in which, in a cable section, the number of threads braided in the cable sheath is increased compared to the number of threads woven into a second cable section. Sheath threads are guided in the core and mitverflochten only partially in the coat. With this measure, according to DE 10 2011 017 273, an increase in the abrasion resistance of the jacket is to be achieved. The rope diameter changes by about 0.1 to 0.2 mm and it is not to be expected from an increase in the dynamic load capacity of the rope due to the total amount of textile material.

US 3,856,240 describes a braided parachute rope, in which

Connection points to the parachute additional filament material to be woven. The rope of US 3,856,240 is not a core-sheath rope.

US 2014/0033906 describes a braided rope into which a different fiber material is partially incorporated in a first group of fiber strands. Also, the rope of US 2014/0033906 is not a core-coat rope.

EP 0 383 702 A1 or the corresponding US Pat. No. 5,060,549 describes

Climbing rope having a portion in which the sheath braided denser than in remaining portions of the rope.

Further prior art is known from CN 201126488Y and US 4,184,784. It is therefore the object of the invention to provide a rope which has improved suitability, in particular as a climbing rope.

This object is solved by the subject matter of claim 1. preferred

Embodiments are given in the subclaims.

Brief description of the figures

Figure 1 shows schematically an embodiment of the cable according to the invention with a section A at one of the two cable ends.

Figure 2 shows schematically an embodiment of the rope according to the invention, each with a section A, A 'at each of the two cable ends.

Figure 3 shows schematically the cross section of a rope with a core of several strands of load bearing material.

FIGS. 4 and 5 schematically show two possibilities of increasing the amount of load-bearing material in section A or A 'of a cable according to FIG. 3.

Figures 6 and 7 show schematically the possibilities for increasing the amount of load-bearing material in section A of a rope according to the embodiments of Figure 4 and Figure 5 in a schematic longitudinal view.

Detailed description of the invention

According to the invention, there is thus provided a core-sheath rope having a core of one or more strands of load-bearing textile material, the rope having two ends and being characterized in that the rope leaves at least one of its ends Section A, in which the rope has a higher dynamic performance according to EN1891A: 1998 than in the remaining course of the rope and in which the core has a larger amount of load-bearing textile material than in the remaining course of the rope.

The term "in the remaining course of the rope" essentially means the entire further course of the rope present invention in the rope according to the invention also other sections are provided with higher dynamic performance, the term "in the remaining course of the rope" does not include such other sections.

The dynamic performance of a core-sheath rope is defined in ENI 891: 1998 and is the maximum determined number of drop tests survived by a rope. ENI 891: 1998 also describes the test method for testing the dynamic performance of a core-sheath rope.

The references to EN 1891: 1998 in the present application relate to the application of this standard to the Form A (EN1891A: 1998) cables specified therein and the measurement methods defined there for those cables, in particular the weights used for this cable.

Due to the larger amount of load-bearing core material in section A, in section A the diameter of the rope is greater than in the rest of the rope.

As a result, especially when using the rope according to the invention as a climbing rope, the additional advantage is achieved that the climber due to the haptic noticeable

Diameter change can detect the end of the rope. In combination with the higher dynamic performance in section A at the end of the rope not only gives the impression of being able to withstand more falls, but the rope actually has a higher dynamic load capacity.

The diameter of the rope according to the invention in section A can be greater by 10% to 100%, preferably 25% to 80%, than in the remaining course of the rope. The percentages refer to the diameter in the remaining course of the rope.

In a rope according to the invention, in particular in the form of a climbing rope, the diameter of the rope in section A can be 9 mm to 16 mm, preferably 10 mm to 14 mm, while the diameter in the remaining course of the rope is 5 mm to 11 mm, preferably 7 mm can be up to 9 mm.

According to the invention in section A, the core on a larger amount of load-bearing textile material than in the remaining course of the rope. It is the existing load-bearing material is not or only partially replaced by another material, but supplemented by other load-bearing material. The term "other load bearing material" This means material that is not present in the rest of the rope, so the rope is additionally supplied.

Therefore, "other load-bearing material" is understood to mean materials, in particular rope elements, such as fiber strands, which are capable, in cooperation with the already existing materials of the core and / or possibly partial replacement thereof, of the static load occurring during use of the rope

especially when used as a climbing rope occurring dynamic load. In general, according to EN 354, man-made fibers used in the manufacture of rope elements for personal protective equipment are:

Minimum strength of 0.6 N / tex should have.

The greater amount of load-bearing textile core material in section A contributes to the invention provided for higher dynamic performance of the rope in section A as well as for inventively provided increase the diameter of the rope in this section or causes this increase.

It is therefore the rope designed so that it has a larger amount of load-bearing and shock-absorbing material in section A as in its remaining course and thus a larger diameter. It is about the introduction of more textile core material, but not by a mere change in diameter

Introducing non-textile elements, e.g. in US 8 832 913 B2 for the purpose of shoelaces.

In the rope according to the invention in section A, one or more of the following measures for increasing the amount of the load-bearing textile material are preferably set in the core:

Introducing and fixing additional strands of load-bearing textile material in the core and / or

Increasing the amount of load-bearing textile material per unit length in the existing strand (s) of the core by optionally partially

Replacing the strands with those with more mass.

Thus, additional strands with the in WO 2013/143966 or in the

WO 2013/143965 are braided into the core and fixed in place. In the braiding devices described in these disclosures, additional strands can be provided, for example, by corresponding openings in the drive wheels of the Device, in particular the drive wheels in the region of the core of the rope or those at positions in which threads are changed from the jacket to the core and vice versa, fed. These extra strands can complement and / or replace the existing strands by ending the pre-existing strand shortly after the braiding of the additional strands.

For example, in the thinner rope section in the core, there may be a strand of twisted multfilament yarns. This strand is then replaced in section A by a thicker strand. Here too, the number of strands in the core remains the same, but the number of strands remains the same

Load capacity and also the thickness increases.

Alternatively, for example, in the thinner rope section in the core, a strand may consist of a monofilament or a single multifilament yarn. This strand is then replaced in section A by a thicker strand. Here too, the number of strands in the core remains the same, but the load capacity and also the thickness increase.

All the above alternatives can also be combined. Thus, a part of the existing strands can be replaced by additionally introduced strands, another part of the strands is replaced by thicker strands and again another part of the strands remains with the additionally introduced strands in the core.

The length of the section A can be, in particular in the case of a climbing rope, 1 m to 20 m, preferably 3 m to 10 m. Usual lengths of a climbing rope are 50 to 80 m, typically e.g. 60 m.

The number of collapsible fall tests of the rope according to the invention in section A according to EN1891A: 1998 can be greater by at least 3, preferably 5 than in the remaining course of the rope.

To determine the higher dynamic performance according to ENI 891: 1998, for example, section A or a length of rope from the rope containing section A may be removed from the rope and the number of drop tests survived without breakage is measured on the one hand on the section A and on the other hand on another part of the rope which does not contain a section A. If the rope according to the invention is used as a climbing rope, it preferably has in section A a number of the breakage-free fall tests according to EN892: 2012 for single ropes, which is at least one (1), preferably 3, more preferably 5 larger than in the remaining course of the rope.

EN892: 2012 specifically describes requirements for dynamic mountain ropes or climbing ropes and the measuring methods for them.

A further preferred embodiment of the core-sheath rope according to the invention is characterized in that the rope has one or more further sections in which the rope has a higher dynamic performance than in the remaining course of the rope.

For these other load-bearing sections in the rope, the same statements apply to preferred embodiments as to section A at the end of the rope.

This will e.g. allows the climber to cut off a rope end loaded with several crashes and to use the next "thick spot" as a new rope end - provided that the rope is still long enough.

Of course, the rope according to the invention may have a section A as described above, in particular at each of its two ends.

The fibrous material used for the load-bearing core may be suitably selected by the skilled person according to the purpose of use, e.g. from the group consisting of polyamide, polyester (PET, PBT), polypropylene, but also high-strength fibers such. UHMWPE fibers (Dyneema®), aramid fibers, LCP fibers and PBO fibers.

In the case of climbing ropes, in which the core should also have shock-absorbing properties, in particular polyamide should be mentioned as a suitable fiber material.

The core-sheath rope according to the invention is particularly suitable for mountaineering applications, especially as a climbing rope. Detailed description of the figures:

The rope 1 according to Figure 1 is a core-sheath rope (not shown) and has two ends 5 and 6. From the end 5 away, the cable 1 has a section A, in which the cable 1 has a larger diameter than in the remaining course of the rope 1. According to the invention, the rope 1 in section A has a higher dynamic performance than in the remaining course of the rope (not shown).

FIG. 2 schematically shows an embodiment of the cable 1 according to the invention with two sections A, A 'at each of the two cable ends 5 and 6.

Figure 3 shows schematically the cross-section of a rope 1 with a core 2 of several strands, representatively provided with the reference numerals 3 and 4, of load bearing material. In the example shown in FIG. 3, the number of these strands is 13.

FIG. 4 shows a possibility for increasing the amount of load-bearing material in section A of a rope according to FIG. 3. In this embodiment, the number of strands 3, 4 is increased compared to the part of the rope 1 shown in FIG. 3, namely 13 (according to FIGS 3) to 19. This results in a higher dynamic at the same time

Resilience of the rope in this section A, as well as a larger diameter.

Figure 5 shows an alternative way to increase the amount of load-bearing

Material in section A of a rope according to Figure 3. In this embodiment, although the number of strands 3,4 compared to the part of the rope 1 shown in Figure 3 remains the same, but a part of the strands (here, for example, the strand 4) is characterized by thicker strands replaced. Once again, this results in a higher dynamic load capacity of the rope in this section A as well as a larger diameter.

Figure 6 shows the possibility of increasing the amount of load-bearing material in

Section A of a rope according to the embodiment of Figure 4 in a schematic longitudinal view, here in the sense of better visibility in the remaining course of the rope only four strands 3,4 (instead of 13 strands of Figure 3) are shown and in section A only three additional strands (representatively designated by reference numerals 3 ', 4') instead of six additional strands as shown in FIG. 4. These additional strands may in a braiding technology as in WO 2013/143966 or WO 2013/143965, for example, by corresponding openings in the drive wheels of the device, in particular in the

Driving wheels in the region of the core of the rope, are introduced in the section A in the core.

Figure 7 shows the possibility to increase the amount of load-bearing material in

Section 5 of a rope according to the embodiment of Figure 5 in a schematic longitudinal view, here in the sense of better recognizability again in the remaining course of the rope only four strands 3,4 (instead of 13 strands of Figure 3) and in section A of Figure 4 only two new thicker strands 3 "and 4" replacing two thinner strands are shown (instead of five thicker strands as shown in FIG. 4).

Claims

Claims:

A core-sheath rope (1) having a core (2) of one or more strands (3, 4) of load-bearing textile material, the rope having two ends (5, 6), characterized in that the rope of at least one of its ends (5,6) away has a portion (A, A '), in which the rope has a higher dynamic performance according to EN1891A: 1998 than in the remaining course of the rope and in which the core a larger amount of load-bearing textile Material has as in the remaining course of the rope.

2. core-sheath rope according to claim 1, characterized in that the

Diameter of the rope (1) in section (A, A ') by 10% to 100%, preferably 25%> to 80%) is greater than in the remaining course of the rope.

3. core-sheath rope according to claim 1 or 2, characterized in that the diameter of the rope (1) in the section (A, A ') 9 mm to 16 mm, preferably 10 mm to 14 mm, while the diameter in remaining course of the rope is 5 mm to 11 mm, preferably 7 mm to 9 mm.

4. core-sheath rope according to one of claims 1 to 3, characterized in that in the section (A, A ') one or more of the following measures are set to increase the amount of the load-bearing textile material in the core:

Introducing and fixing additional strands (3 ', 4') of load-bearing textile material into the core

Increasing the amount of load-bearing textile material per unit length in the existing strand (s) (3,4) of the core by optionally replacing the strands partially with those having more mass (3 ", 4").

5. core-sheath rope according to one of the preceding claims, characterized

in that the length of the section (A, Α ') is 1 m to 20 m, preferably 3 m to 10 m.

6. core-sheath rope according to one of the preceding claims, characterized

characterized in that the section (A, A ') withstands fracture-free a number of drop tests according to EN1891A: 1998, which is at least 3, preferably 5 higher than in the remaining course of the rope.

7. Core-sheath rope according to one of the preceding claims, characterized in that the section (A, A ') withstands fracture-free a number of drop tests according to EN892: 2012 for single ropes, which is at least one (1), preferably 3, particularly preferred 5 is greater than the rest of the rope.

8. core-sheath rope according to one of the preceding claims, characterized

characterized in that the cable has one or more further sections (Α '), in which the rope has a higher dynamic performance than in the remaining course of the rope.

9. Use of a core-sheath rope according to one of the preceding claims in mountaineering applications, in particular as a climbing rope.