CABLE AND METHOD FOR MANUFACTURING A SYNTHETIC CABLE

• US 20160168786A1
• Filed: 07/29/2014
• Published: 06/16/2016
• Est. Priority Date: 07/29/2013
• Status: Active Grant

• Current Assignee: Braskem SA
• Original Assignee: Braskem SA
• Inventors: Bueno, Marcos Roberto Paulino, PENAQUIONI, Andr?
• Granted Patent: US 9,816,228 B2
• Time in Patent Office: Days
• CPC Class Codes: D07B 1/02 Ropes built-up from fibrous or filamentary material, e.g. of vegetable origin, of animal origin, regenerated cellulose, plastics
• CPC Class Codes: D07B 1/025 comprising high modulus, or high tenacity, polymer filaments or fibres, e.g. liquid-crystal polymers
• CPC Class Codes: D07B 1/18 Grommets slings B66C1/12
• CPC Class Codes: D07B 1/185 characterised by the eye construction
• CPC Class Codes: D07B 2201/2033 Parallel wires
• CPC Class Codes: D07B 2201/2034 comprising crossing wires or filaments in the same layer
• CPC Class Codes: D07B 2201/2098 characterized by special properties or the arrangements of the binding wire
• CPC Class Codes: D07B 3/00 General-purpose machines or apparatus for producing twisted ropes or cables from component strands of the same or different material
• CPC Class Codes: D07B 5/00 Making ropes or cables from special materials or of particular form
• CPC Class Codes: D07B 5/002 Making parallel wire strands
• CPC Class Codes: D07B 7/16 Auxiliary apparatus
• CPC Class Codes: D07B 7/167 for joining rope components
• CPC Class Codes: D07B 7/169 for interconnecting two cable or rope ends, e.g. by splicing or sewing fixation or holding of the ends prior to or during splicing D07B7/162; joining the rope or cable components individually or joining the rope ends by permanent means such as welding, gluing or crimp sleeve D07B7/167; preparing the splice by opening the ends D07B7/18

Abstract

The present invention relates to synthetic cables comprising a core formed of high modulus threads arranged in parallel to each other, wherein the ends of the cable comprise splice-type termination ends (1), wherein each splice (1) comprises high modulus threads arranged in parallel to each other forming an eyelet (11) on each splice, wherein each leg of the threads (13, 13) comprising each splice is connected to a thread (21) that forms the core of the cable, wherein the splice threads (13, 13) and the core threads are arranged in parallel to each other at an interpenetration region (12).

The present invention further discloses a method for manufacturing a synthetic cable comprising a core formed of high modulus threads arranged in parallel to each other, wherein the ends of the cable comprise splice-type termination ends (1), wherein each splice (1) comprises high modulus threads arranged in parallel to each other, which method comprises the steps of: individually connecting each leg of the threads (13) comprising a positive splice to a thread (21) of the beginning end of the cable core (2) forming a loop; joining the threads of the positive splice (13) so as to form a loop, straining all the threads, wherein the splice threads (13) and the core threads (21) are arranged in parallel to each other at an interpenetration region (12); applying a normal compression force at the interpenetration region (12) of the positive splice (1); applying at least one protective element (32) along the entire length of the cable; individually connecting each leg of the threads (21) that form a negative splice to a thread (21) of the final end of the cable core (2) forming a loop; joining the threads (13) of the positive splice so as to form a loop, straining all the threads, wherein threads (31) from the splice and threads (21) from the core are arranged in parallel to each other at an interpenetration region (12); and applying a normal compression force at the interpenetration region (12) of the negative splice.

Claims

1. A synthetic cable comprising a core formed by high modulus threads arranged in parallel to each other, wherein the ends of the cable comprise splice-type termination ends, wherein each splice comprises high modulus threads arranged in parallel to each other forming an eyelet in each splice,

characterized in that each leg of the threads comprising each splice is connected to a thread comprising the core of the cable, wherein the splice threads and the core threads are arranged in parallel to each other in a interpenetration region.

2. The cable of claim 1, characterized by comprising a means for application of a normal compression force at the interpenetration region, wherein the means for application of a normal compression force is selected from the group consisting of external tightening threads;

tightening ribbons; and

tightening screens.

3. The cable of claim 1, characterized in that each eyelet comprises a thimble protector against wearing.

4. The cable of claim 2, characterized in that the splice comprises, at the interpenetration region, at least one from:

of a surface finishing liquid; and

an adhesive.

5. A method for manufacturing a synthetic cable comprising a core made of high modulus threads arranged in parallel to each other, wherein the ends of the cable comprise splice-type termination ends, wherein each splice comprises high modulus threads arranged in parallel to each other, characterized by comprising the steps of:

individually connecting each leg of the wires comprising a positive splice to a thread of the beginning end of the cable core, forming a loop;

joining the threads of the positive splice so as to form a loop, straining all the threads, wherein the splice threads and the core threads are arranged in parallel to each other at an interpenetration region;

applying a normal compression force at the interpenetration region of the positive splice;

applying at least one protective element over the entire length of the cable;

individually connecting each leg of the threads that form a negative splice to a thread of the final end of the cable core, forming a loop;

joining the threads of the positive splice so as to form a loop, straining all the threads, wherein threads from the splice and threads from the core are arranged in parallel to each other at an interpenetration region; and

applying a normal compression force at the interpenetration region of the negative splice.

6. The method for manufacturing a synthetic cable of claim 5, characterized in that the threads of the positive and negative splices are connected to the threads of the core by means of one of splicers and knoters.

7. The method for manufacturing a synthetic cable of claim 5, characterized in that the cable further passes through a pull extrusion process.

8. The method for manufacturing a synthetic cable of claim 5, characterized in that the splices are further coated with reinforcing layers and a cover.

9. The method for manufacturing a synthetic cable of claim 5, characterized in that the splice threads are stored in accumulator tubes connected to a suction grid, such that connection between the core threads and the splice threads is made by an automated head.

10. The method for manufacturing a synthetic cable of claim 5, characterized in that:

after the connection between the positive splice threads and the core threads, all the loops of the positive splice are arranged in a hook that is pulled by a flexible cable, such that the core threads are pulled by the positive splice threads;

after the connection between the negative splice threads and the core threads, such that the negative splice threads are pulled by the core threads, wherein all the loops of the negative splice are arranged in a second hook, which is stretched against the movement direction of the first hook to maintain the cable stretched.

11. The method for manufacturing a synthetic cable of claim 10, characterized in that before the positive splice threads are arranged in the first hook, each loop formed by the positive splice threads is arranged in holes of a hole plate, such that the holes are arranged at positions where the threads should be allocated at the core of the cable.

12. The method for manufacturing a synthetic cable of claim 11, characterized in that after passing through the hole plate, the splice loops and the core threads of the cable pass through diameter reducing rings, until the normal compression force is applied to the interpenetration region of the positive splice and, thereafter, the at least one protective element over the entire length of the cable.