RU2762643C1 - Synthetic rope - Google Patents

Abstract

FIELD: rope products.

SUBSTANCE: invention relates to rope products and can be used for the production of synthetic ropes containing a core and a sheath, which are intended for lowering people along a fixed rope, while the rope is synthetic, consisting of a synthetic core and a sheath of loose weave, between which there are synthetic double-sided hook tapes with elastic bases to maintain the performance characteristics of the synthetic rope when it is stretched.

EFFECT: rope products improvement.

4 cl, 3 dwg

Description

The invention relates to rope and rope products and can be used for the production of synthetic ropes containing a core and a sheath, which are designed to lower people along a fixed rope, as well as in other areas. [IPC D07B1 / 14, D07B1 / 18]

Known from the prior art ROPE AND COMBINED ROPE OF SYNTHETIC FIBERS AND STEEL WIRE STRAINS (VERSIONS) [EA 017642 B1, publ. 02/28/2013], consisting of a core made of synthetic fibers and enclosed in a sheath of synthetic fibers, on top of which there is an intermediate layer of soft elastic synthetic material, into which steel wire strands of the outer layer of the rope are pressed.

The disadvantage of the analogue is the complexity of its manufacture due to the need to supplement the equipment for the usual process of making ropes with equipment for extruding the intermediate layer.

Also known from the prior art ROPE FOR ALPINISM [CN 106012621, publ. 10/12/2016], which is made of nylon threads and includes a core, an outer sheath and an intermediate sheath located between the core and the outer sheath, which is an adhesive film. The glue film is made of hot melt glue and connects the core and the outer sheath to each other into a single whole so that there are no mutual displacements of its core and the outer sheath in the rope.

The disadvantage of this analogue is the complexity of its manufacture due to the need to supplement equipment for the usual process of making ropes with equipment for applying glue to the rope core, as well as equipment for heating the rope in order to transfer the hot melt glue to a liquid state for gluing the core and the outer sheath of the rope.

The closest in technical essence is SYNTHETIC ROPE [RU 188480 U1, publ. 04/15/2019], consisting of a core and a sheath, characterized in that two or more synthetic double-sided hook bands are located between the core and the sheath, when people descend along which the rope is subjected to a mechanical load, provoking a displacement of the rope sheath relative to its core, while the hooks are double-sided hook strips, which are in engagement with the core and the sheath, prevent the sheath from displacing relative to the core.

The main technical problem of the prototype is that the hook tape has a lower capacity for elongation than the core or sheath, which during operation of the rope is more susceptible to stretching than the core, which causes, under significant loads, the probability of sheath shift relative to the core with subsequent deformation and / or destruction of double-sided hook belts and loss of rope performance.

The objective of the invention is to eliminate the disadvantages of the prototype.

The technical result of the invention is the preservation of the performance characteristics of the synthetic rope when stretched.

The claimed technical result is achieved due to the fact that a synthetic rope is proposed, consisting of a synthetic core and a sheath, between which there are synthetic double-sided hook tapes, characterized in that the core and the sheath are formed by loose weaving of synthetic threads; double-sided hook tapes with elastic bases are laid between the core and the sheath.

In particular, the core is woven from textured polyamide yarns.

In particular, the casing is woven from air-textured polyester filaments.

In particular, the double-sided hook tapes are formed by a pair of elastic bases, sewn with a thread, with hooks on the outside.

Brief description of the drawings.

Figure 1 shows a side view of a synthetic rope.

Figure 2 shows a section A-A of a synthetic rope.

Figure 3 shows a section B-B of a synthetic rope.

The figures indicate: 1 - core, 2 - double-sided hook tape, 3 - rope sheath, 4 - thread, 5 - hook tape base, 6 - hooks (hooks), 7 - synthetic core threads, 8 - synthetic sheath threads.

Implementation of the invention.

The synthetic rope consists of a core 1 formed by loose weaving of synthetic threads 7, along which double-sided hook tapes 2 are laid, while over the core 1 and double-sided hook tapes 2 there is a sheath 3 formed by a loose weave of synthetic threads 8.

Double-sided hook tapes 2 are formed by a pair of tapes with elastic bases 5, sewn with thread 4, with hooks 6 on the outside.

In one of the possible embodiments, as synthetic threads 7 for the core 1, threads of textured polyamide can be used, and as synthetic threads 8 for the sheath 3, threads of air-textured polyester can be used.

The claimed technical solution is used as follows.

One end of the synthetic rope is fixed at some upper point, after which people descend along the synthetic rope without the use of descenders. When people descend, the rope is subjected to a mechanical load, which provokes stretching of the sheath 2, double-sided hook tapes 2, as well as the core 1, while the hooks 6 of the double-sided hook tapes 2 are in mesh with synthetic threads 7 and 8, respectively, of the core 1 and the sheath 3, and thus transfer part of the load from the shell 3 to the core 1, which ensures the same longitudinal stretching of the core 1, double-sided hook tapes 2, as well as the shell 3.

The technical result of the invention is achieved due to the fact that they use loose weaving of synthetic threads 7 and 8, respectively, for the core 1 and the sheath 3, as well as through the use of double-sided hook tapes 2 with elastic bases 5, which makes it possible to equally stretch all structural elements of the synthetic rope, allows more efficient distribution of the load between the shell 3 and the core 1, and also reduces the forces directed to the displacement of the core 1 relative to the shell 3.

Let us consider an example of achieving a technical result in which the core 1 of a synthetic rope is made by loose weaving of textured polyamide threads, and the sheath 3 is made by loose weaving of pneumotextured polyester threads.

For testing, a synthetic rope with a diameter of 50 mm and a length of 15 m was chosen.

During the tests, one end of the synthetic rope was fixed at a height of 15 m, while people descended the rope without the use of descenders, using the sliding method, grabbing the rope with their gloved hands and squeezing it with shoe welts. In total, a group of 15 people performed an average of 150 descents during a one-day test cycle, and during 10 test cycles, a total of 1500 descents were performed. During the tests, up to three people weighing from 75 to 95 kg were simultaneously on the rope, while there was no mutual displacement of the core 1 relative to the sheath 3, and after the load was removed, the original length of the rope was restored, which indicates an effective distribution of the load between the core 1 and the sheath 3, as well as their equal stretching together with double-sided hook tapes 2, which ensures high performance characteristics of the synthetic rope when stretched.

Claims (4)

1. A synthetic rope, consisting of a synthetic core and a sheath, between which there are synthetic double-sided hook tapes, characterized in that the core and the sheath are formed by loose weaving of synthetic threads, double-sided hook tapes with elastic bases are laid between the core and the sheath. 2. A rope according to claim 1, characterized in that the core is woven from textured polyamide threads. 3. A rope according to claim 1, characterized in that the sheath is woven from pneumotextured polyester threads. 4. A rope according to claim 1, characterized in that the double-sided hook tapes are formed by a pair of elastic bases, sewn with thread, with hooks on the outside.

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