SU1038394A1 - Trihedral wire rope - Google Patents

Abstract

THREE GRINDED WIRE WIRE CABLE CONTAINING wire strands with metal cores surrounded by a sheath of soft material with semicircular grooves under adjacent wire strands, characterized in that, in order to increase the service life of the rope by increasing its transverse stiffness, it would lead to wire wires that would extend the life of the rope by increasing its transverse stiffness and making wire stretching. The strands are located with a linear touch on the core strand on the stretch of the strand facing the center of the rope and bounded by lines connecting the center of the core of this strand to trams of cores of neighboring strands. (L

Description

The invention relates to cable production, namely to the structures of shaped wire ropes,

A trihedral wire rope is known, containing twisted wire strands with metallic and cores surrounded by a sheath of soft material with semicircular grooves on the faces of adjacent wires of strand ij.

The disadvantage of this rope is that in it between the round core and the wires in the places of the rounded edges there is a significant space filled with soft material, which makes the strands flexible in the direction of its edges. And since the trigranous strand is ribbed onto the core of the rope with an internal edge, this reduces the lateral rigidity of the rope, its resistance to crushing and exploitation of the sill qualities.

The purpose of the invention is to increase the service life of the rope by increasing its transverse rigidity.

The goal is achieved by the fact that in a three-sided wire rope containing twisted wire strands with metal and cores surrounded by a sheath of soft material with semicircular grooves under the adjacent wires on the section of the strand facing the center of the rope and bounded by lines connecting the center of the core Dania pdi to the centers of the cores of the neighbors of the strands and with a point touch on the section the outer faces of the strand along the symmetry line of the strand passing through the center of the rope.

FIG. Figure 1 shows a fashioned cable containing the straps, a cross section, in FIG. 2, the same with rounded edges; in FIG. 3 — strand in con, tact with adjacent straps, cross section; in fig. 4 is a four-strand cable with sector-like strands, cross section.

The rope contains triangular strands 1, twisted around core 2, having, for example, one layer of wires 3 and metal-core 4 with a soft sheath 5.

On the inner rounded edge of the strand, facing the center of the cable O, the wires 6 are arranged tightly around the metal core 4 with a con, the arc of a circle centered to it

with a central angle (p (Fig. 2). On the line of symmetry, strands 1-1, passing through the center of the rope O, diametrically opposed wires 6 and 7 are laid approximately equidistant from the center O, the metal core 4 at a distance C.

Due to such a design, the transverse load Q applied to its outer face is transmitted to the core 2 of the rope through the metal core 4 of the straight and tightly attached wires 6 and 7, which provides an increased transverse rigidity of the rope and its improved performance.

A pressure P acts on strand 1 from the side of adjacent strands, which is transmitted through the lines 0 0 and 0 0 connecting their centers (Fig. 3). Therefore, to ensure increased rigidity of the strand in the direction of action of the interstring pressure P along the side faces of the arc of the bend of the wires 6 of the metal core 4, it is preferable to bring the line to the 0 Oj line connecting the centers of the adjacent strands.

FIG. 1-3 show strands with one layer of wires, wound around core 4, on top of the wires 3 may be. One or more layers of wires are drawn, which does not change the essence of the invention. The metallic core 4 can be made in the form of a solid wire or a twisted wire of any of the known constructions. The number of shaped strands in the rope can also be arbitrary. Within reasonable limits, it is approximately 10 to 6.

For the example in FIG. 4 shows a cross section of a four-strand rope from sector-like strands 1 in which another layer of wires 8 is laid over the wires 3. The metal core 4 is straight, for example, in the form of plastically {crimped wire strands. The angle of the arc of bending around the wire of the metal sickle 4 on the inner edge is equal to (.

Shaped ropes can be made using the methods of special twisting, compression of round strands in a shaped profile or aggregate crimping of a rope previously twisted from round strands.

Due to such a performance of a shaped rope, the lateral rigidity of the rope and resistance to crushing during multilayer winding on the drum increase, which leads to a twisting of the rope life by 15–2% and the economic effect is about 100 rubles. per 1 ton of ropes.

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Claims (1)

A THREE-LINEAR WIRE ROPE containing twisted wire strands with metal cores surrounded by a sheath of soft material with semicircular grooves for adjacent strand strands, characterized in that, in order to increase the rope's service life by increasing its lateral stiffness, the wires of the inner layer of each strand are located with a linear touch relative to the core of the strand in the section of the strand facing the center of the rope and bounded by lines connecting the center of the core of the strand to the centers of the dechnikov adjacent strands. Fiyo. /