Abstract:
A cable or rope (10-1; 10-2), of the composite type, comprising: a inner metallic rope or core (10-A), consisting of a plurality of metal strands (10-A'), and a plurality of covering layers formed around the inner metallic core (10-A), wherein the covering layers comprise a first layer (10-B) of Kevlar formed around the inner metallic core (10-A), and a second layer (10-C) of polyester that is formed around and covers the first layer (10-B) of Kevlar, and wherein the first and the second coating layer, respectively Kevlar and polyester, are made with a fabric of braided yarns, or, according to a further embodiment (10-2) of the composite cable, the covering layers comprise a further third layer (10-C), of Kevlar and/or Dyneema, which is formed around and covers the second layer (10-C) of polyester, in turn formed and arranged around the first layer (10-B) of Kevlar. The cable or rope of the invention substantially innovates over the known conventional cables. The invention also relates to an innovative anchoring and safety system (20), based on the use of a rope and directed to put in safety roofs (RO) and the roofing of buildings against accidental falls from an height of the people working on them, comprising one or more anchorages (21), fixed to the roof (TE) to make safe and sure, in each of which the rope (E) is stably locked by screwing, so as not to create problems of instability for the people that is attached to the rope.
Abstract:
A new and innovative safety device (10), with a sliding cable, and a corresponding installation (IN), to secure conduits, pipes, piping and similar equipments subject to a high pressure due to a fluid under pressure that circulates in the same conduits and equipments, comprising: - a flexible cable (11) which forms a first (12) and a second attachment eyelet (13) for attaching and connecting the safety device (10), at its two opposite ends, to two parts (P1, P2), connected between them, of these conduits and equipments under pressure; - a first (14) and a second sleeve (15) which close two end portions of the flexible cable (11) so as to form, at the ends of the safety device (10), the first and second attachment eyelets (12, 13); and two terminals (16, 18) provided at the opposite ends (11a', 11b') of the flexible cable (11); wherein the safety device (10) is configured in such a way that, when a rupture occurs or a burst occurs in the zone of the two parts (P1, P2), connected between them, of these conduits and equipments under pressure, the flexible cable (11) of the safety device (10) is subject to slide in the two sleeves (14, 15), and consequently the two terminals (16, 18), fitted to the two heads of the flexible cable (11), are pushed to cooperate into contact with the two sleeves (14, 15), so as to tighten the two eyelets (12, 13) around the two parts (P1, P2), of the conduit or equipment in pressure, to which the safety device (10) is attached. The safety device of the invention exhibits improved performances compared to the security devices currently known and in use for similar purposes, and in particular, thanks to the sliding of the flexible cable (11), of which it is composed, in the two sleeves (14, 15), the safety device is adapted to exert an effective action for damping and dissipating the energy that develops and is released in the event of a breakage and/or explosion in the connection zones of conduits, organs, and similar equipments in pressure, so as to limit as much as possible the damages that are produced when these events occur.
Abstract:
A composite rope (10 1; 10 2) comprising: an inner metallic core (10 A) laid from a plurality of twisted wire strands (10 A ) and a plurality of covering layers formed around the inner metallic core (10 A) wherein the covering layers comprise a first layer (10 B) at least braided with aramid yarns such as Kevlar (R) and formed around the inner metallic core (10 A) and a second layer (10 C) at least braided with polyester yarns and formed around and covering the first layer (10 B). Additionally the covering layers may comprise a third layer (10 C) braided with p aramid (Kevlar (R)) yarns and/or yarns of UHMWPE fibers (Dyneema (R)) which is formed around and covers the second layer (10 C). In case of reaching the tensile strength of the composite rope (10 1; 10 2) the composite rope breaks totally and completely only in stages namely first the metallic core (10 A) and subsequently the layers (10 A 10 B 10 C). An anchoring and safety system (20) based on the use of a rope and directed to put in safety roofs (RO) and the roofing of buildings against accidental falls from a height of people working on them comprising one or more anchorages (21) fixed to the roof (TE) to make safe and sure in each of which the rope (E) is stably locked by screwing so as to avoid issues of instability for the people that are attached to the rope.
Abstract:
A composite rope (10-1; 10-2) comprising: an inner metallic core (10-A) laid from a plurality of twisted wire strands (10-A'), and a plurality of covering layers formed around the inner metallic core (10-A), wherein the covering layers comprise a first layer (10-B) at least braided with aramid yarns, such as Kevlar (R), and formed around the inner metallic core (10-A), and a second layer (10-C) at least braided with polyester yarns and formed around and covering the first layer (10-B). Additionally, the covering layers may comprise a third layer (10-C) braided with p-aramid (Kevlar (R)) yarns and/or yarns of UHMWPE fibers (Dyneema (R)), which is formed around and covers the second layer (10-C). In case of reaching the tensile strength of the composite rope (10-1; 10-2), the composite rope breaks totally and completely only in stages, namely first the metallic core (10-A) and subsequently the layers (10-A, 10-B, 10-C). An anchoring and safety system (20), based on the use of a rope and directed to put in safety roofs (RO) and the roofing of buildings against accidental falls from a height of people working on them, comprising one or more anchorages (21) fixed to the roof (TE) to make safe and sure, in each of which the rope (E) is stably locked by screwing, so as to avoid issues of instability for the people that are attached to the rope.