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Synthetic fibre rope without jacket

A synthetic fiber and rope technology, applied in the direction of synthetic fiber, fiber treatment, fiber type, etc., can solve the problems of displacement or accumulation of synthetic sheath, broken rope, expensive sheath, etc., and achieve the effect of simple cost and reliable protection.

Inactive Publication Date: 2008-05-07
INVENTIO AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under certain conditions, lateral forces that occur when the rope is loaded can cause the composite sheath to shift or build up
These changes in the rope are undesirable as they can cause the rope to break
However, using an extrusion process to coat the strands with a sheath that requires the necessary adhesion between the strands and the sheath is more expensive

Method used

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  • Synthetic fibre rope without jacket

Examples

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Embodiment Construction

[0028] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0029] A preferred exemplary embodiment of the invention with a liquid impregnating substance is described below with reference to a drawing showing a cross-section of a rope 1 consisting of 16 strands. Five helically identical strands 3 are twisted around a central strand 2, and five thicker strands 4 and five thinner strands 5 are alternately twisted in parallel with the strands 3 to form the outermost layer 6 (also called the covering layer). The strands 2 , 4 , 5 shown in the rope 1 for carrying the load are twisted or twisted from a single bundle of aramid fibers 7 .

[0030] The strands 2, 3, 4 and 5 consist essentially of aramid threads 8 helically bonded in a polyurethane matrix. For twisting or twisting, the aramid thread 8 is treated with a protective impregnating substance, such as a polyurethane solution. The ratio of polyurethane in 2, 4, 5 per strand is jointly determined by the fatigue strength of the ...

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Abstract

With this synthetic rope, which has multiple layers of load-bearing aramide fiber strands (9, 10, 11) laid together, it is proposed that instead of an extruded protective synthetic sheath as hitherto, only an additional coating (19) of the synthetic fiber strands (4, 5) in the outermost layer of strands (6) with impregnating substance and additives of UV stabilizers, short fibers, oxidation and reduction blockers is applied, and thereby a reliable protection against environmental influences damaging to the rope, as well as an unchanged adequate resistance of the synthetic fiber rope (1) to abrasion, is ensured.

Description

field of invention [0001] The invention relates to a synthetic fiber rope, preferably an aramid synthetic fiber rope, comprising a coating according to the preamble of claim 1 . Background of the invention [0002] In handling technology, for example in lifts, in construction for cranes, and in surface mining, ropes, especially moving ropes, are important elements of machines and are subjected to load-bearing use. A particularly complex aspect is the load of driven ropes, such as some ropes used in crane construction and for suspending cable cars. In these cases, very long ropes are required, requiring the smallest possible mass or weight from energy considerations. High tensile strength synthetic fiber ropes, such as aramids or aramides for short, which have highly oriented molecular chains, meet these requirements better than ordinary steel cords. However, materials such as aramids are very sensitive to ultraviolet (UV) light, and the environment has oxidizing or reducin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D07B1/04D07B7/14D01F6/60C08J7/04B66B7/06D06M15/564D06M101/00D06M101/16D06M101/30D06M101/34D07B1/02D07B1/16
CPCD07B2401/202D07B2201/2044D07B2201/1036D07B1/025D07B2205/205D07B2401/2075Y10T428/29D07B2801/10D07B1/02
Inventor 克劳迪奥·迪安吉利斯
Owner INVENTIO AG
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