US 5,669,214 A · Stranded wire rope or cable having multiple stranded rope elements, strand separation insert therefor and method of manufacture of the wire rope or cable

Abstract

To reduce elongation of a stranded wire rope or cable (1), particularly when running over sheaves, or pulleys, and decrease vibration as well as operating noise while increasing operating speed, insert elements (4) are placed between adjacent rope elements (2). The insert elements, in cross-section, have an intermediate portion part (7) with oppositely positioned concave recesses (9), a head portion (6) which can be widened to the circumferential diameter of the rope or cable (1) and a widened base portion (8). The base portions (8) are not interconnected. The insert ribbons or tapes are preferably formed along their length with slits (11) extending from the head portion (6) to about the middle of the ribbon or tape to allow for bending of the rope, and the inserts about circular pulleys. The insert elements (64, 74, 94), preferably, are reinforced with a fabric material (16, 96), which is integrated into the material of the inserts, and located, for example adjacent the concave recesses, or in a central plane of symmetry, or with longitudinal reinforcements (84), such as reinforcement fibers, glass fibers, monofilaments or the like. Preferably, the fabric is a woven fabric of fibrous or monofilamentary material, yarns or threads.

Claims21

Dependent claims

A stranded wire rope or cable having

six stranded wire rope elements (2) helically stranded about a center line (12) extending longitudinally within the rope or cable;
insert elements (4) located between the stranded rope elements (2),
wherein the insert elements comprise
ribbons or tapes (4), each having
two end portions defining, each, a head portion (6) and a base portion (8), and
an intermediate portion (7) between said head portions and base portions,
wherein the base portions are essentially wedge-shaped defining lateral surfaces and an apex, said apex facing said center line (12), each with an angle of 60.degree. at said apex, and extend close to the center line (12) of the rope or cable with said lateral surfaces of adjacent wedge-shaped portions engageable with each other,
wherein said base portions (8) of the respective insert ribbons or tapes are separate from each other;
wherein the intermediate portions (7), in cross section, are formed with two opposite concave depressions (9), said depressions engaging against adjacent rope elements (2);
and
wherein the head portions (6) terminate at a theoretical outer surrounding circle (14) of the rope or cable (1).

8 more elements

A stranded wire rope or cable having six stranded wire rope elements (2) helically stranded about a center line (12) extending longitudinally the rope or cable;

and
insert elements (4) located between the stranded rope elements (2),
wherein the insert elements comprise
ribbons or tapes (4), each having two end portions defining a head portion (6) and a base portion (8), respectively, wherein the base portions (8) are essentially wedge-shaped with a wedge angle of 60.degree., said ribbons or tapes further having an intermediate portion (7) between said head and base portions,
a central core (3) located essentially along the center line (12) of the rope or cable (1);
wherein the central core (3) comprises elastomer material;
wherein the base portions (8) of the respective insert ribbons or tapes are separate from each other and from the core;
wherein the base portions (8) of the ribbons or tapes (4) and the central core (3) are closely spaced or in engagement,
wherein the base portions (8) are rounded at regions of engagement with the core (3) and at sides facing an oppositely positioned base portion;
wherein the intermediate portion (7) in cross section, is formed with two opposite concave depressions (9), said depressions engaging against adjacent rope elements (2), the concave depressions (9) of the intermediate portion (7) being essentially part circular and formed with a radius which at least approximately corresponds to the radius of the rope elements (2);
and
wherein the head portions (6) terminate at a theoretical outer surrounding circle (14) of the rope or cable (1).

9 more elements

A stranded wire rope or cable having

at least six stranded wire rope elements (2) helically stranded about a center line (12) extending longitudinally within the rope or cable;
and
insert elements (4) located between the stranded rope elements (2);
wherein the insert elements comprise
ribbons or tapes (4), each having two end portions defining a head portion (6) and a base portion (8), respectively, and further having an intermediate portion (7) between said head and base portions,
wherein the intermediate portion (7), in cross section, is formed with two opposite concave depressions (9) restricting the cross section of the ribbon or tape (4), said depressions engaging against adjacent rope elements (2);
wherein the head portions (6) terminate at a theoretical outer diametrical circle (14) of the rope or cable (1);
and
wherein the base portions (8) of the respective insert ribbons or tapes are separate from each other;
and wherein said insert elements further comprise a fabric reinforcement (16, 86, 96) located at least in said intermediate portion (7), integrated with said insert elements, and include a woven fabric (96) located essentially in the axis of symmetry of the insert elements (94).

7 more elements

Dependencies are inferred from the claim text.

Stranded wire rope or cable having multiple stranded rope elements, strand separation insert therefor and method of manufacture of the wire rope or cable

Life of this patent

Stranded wire rope or cable having multiple stranded rope elements, strand separation insert therefor and method of manufacture of the wire rope or cable

Life of this patent

Abstract

Claims21