Method for producing a wire cable

Abstract

A method for producing a wire cable with a core cable or core strand, the method including the steps of: prior to stranding an outer strand layer, applying an intermediate layer of a plastic material to the core cable or core strand; pressing the outer layer into the plastic material during stranding; and, hammering the wire cable, after the outer strand layer has been stranded, to increase the space factor of the wire cable, wherein the hammering step includes hammering with hammers that are moved from different sides toward the wire cable and essentially completely surround the wire cable with adapted curvatures at the instant of their simultaneous impact.

Claims

1. A method for producing a wire cable with a core cable or core strand, the method comprising the steps of: prior to stranding an outer strand layer, applying an intermediate layer: of a plastic material to the core cable or core strand; pressing the outer layer into the plastic material during stranding; and, hammering the wire cable, after the outer strand layer has been stranded, to increase the space factor of the wire cable, wherein the hammering step includes hammering with hammers that are moved from different sides toward the wire cable and completely surround the wire cable with adapted curvatures at the instant of their simultaneous impact, wherein hammers are used having an axial extension of at least twice the cable diameter and an enlarged, tapering inlet.

2. The method according to claim 1, wherein a thermoplastic material is used for the intermediate layer, further comprising heating the thermoplastic material during stranding of the outer strand layer.

3. The method according to claim 1, wherein strands with a core wire and a wire layer or parallel-lay strands are used for the outer strand layer.

4. The method according to claim 1, wherein strands with an deformable core are used for the outer strand layer.

5. The method according to claim 4, wherein the deformable core is of soft iron or plastic material.

6. The method according to claim 1, wherein four hammers are used for hammering.

7. The method according to claim 1, comprising subjecting the wire cable after hammering to a surface treatment.

8. The method according to claim 1, comprising coating the wire cable after hammering.

9. The method according to claim 1, comprising providing the wire cable with a sheathing.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Fig. 1 is a cross-sectional drawing showing an embodiment of wire cable produced in accordance with the invention; and

(2) Fig. 2 schematically shows a wire rope and a cross-section of hammers having a tapering inlet.

DETAILED DESCRIPTION OF THE INVENTION

(3) A core cable 1, which consists of a central core strand 2 (1+6) and six strands 3 (1+6), is surrounded by a thermoplastic 4.

(4) During the stranding process on the core cable 1, an outer strand layer 5 that consists of six strands 6 (1+6) is pressed into the plastic 4, which has been softened by heating.

(5) The wire cable produced in this way was hammered in the manner described above.

(6) During this treatment, the outer strands 6 were strongly deformed. However, on their underside, the wire cross-sectional sections 8 that lie in the plastic 4, i.e., that lie below the dot-dash line 7, are largely preserved in their original form.

(7) The core cable 1 was also somewhat deformed and compressed, but this occurred to only a slight extent in this case and is not shown in the drawing.

(8) Fig. 2 shows the wire rope and to hammers 10 in a cross-section along the axial extension of the wire rope. The inlet of the inlet 11 of the hammers 10 tapers.