Stranded wire rope

a technology of stranded wire rope and stranded wire, which is applied in the field of high-performance stranded wire rope, can solve the problems of easy failure of the rope, difficult to avoid situations, and the plastic impregnation of the rope is not a very controlled process, and achieves the effect of high pressure and plastic going easily around the separator

Inactive Publication Date: 2017-12-28
BRIDON INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention provides a wire rope that has a high fatigue life and wear resistance. This wire rope is also suitable for severe fretting operations and can be produced using conventional punching and cabling processes.

Problems solved by technology

On the other hand, conventional plastic impregnation of ropes is not a very controlled process since it is difficult to control how the rope is impregnated.
During this process, it is difficult to avoid situations whereby two or more outer rope strands contact each other or the outer rope strands contact the outer strands of the core when the rope is flexed during use.
These contact points become steel-to-steel abrasion points during the operation of the ropes, leading to the eventual failure of the rope.
Maintaining the strand-to-strand and strand-to-core separation in a plastic impregnated rope is quite difficult.
However, this system requires a precise operational control and still leaves the possibility of contact between the wires of the outer strands after fretting of the plastic or fibrous rods.

Method used

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  • Stranded wire rope
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Examples

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Embodiment Construction

[0027]A construction of the wire rope of the present invention is illustrated in FIG. 1. The wire rope has a diameter of 44 or 71 mm and a configuration of EP8×K36WS+IWRC (1+6−8−8+8). Herewith, EP refers to the wire rope covered with a polymer. The wire rope has 8 compacted outer strands having 36 wires in combined parallel lay, indicated by 8×K36WS. The core is an independent wire rope (IWRC). The entire rope has a Warrington construction (1+6−8−8+8), i.e. it is a parallel lay strand construction having an outer layer of wires containing alternately large cords and small cords, the number of cords in the outer layer being twice that in the underlying layer of cords.

[0028]As shown in FIG. 1, the wire rope 10 has an independent wire rope core (IWRC) 12 which is provided with a plastic jacket 14. Preferably, the plastic jacket 14 is made of a hard plastic material, such as polyamide. The independent wire rope 12 can be synthetic rope. The independent wire rope 12 is preferably a steel...

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Abstract

A wire rope (10, 20), comprising: a core (12, 22), a plurality of outer strands (18, 28) and a plurality of separator strands (17, 27) laid on said core (12, 22), and a first plastic jacket (19) around said plurality of outer strands (18, 19) and said plurality of separator strands (17, 27), wherein said plurality of separator strands (17, 27) extend from said core (12, 22) and in-between each pair of said plurality of outer strands (18, 28) so as to produce and maintain gaps between said pair of said plurality of outer strands (18, 28). Plastic impregnation of the wire rope (10, 20) can be ensured due to the separator strands / 17, 27).

Description

TECHNICAL FIELD[0001]The present invention relates to a wire rope, in particular to a high performance stranded wire rope, a method for producing such a wire rope and the applications of such a wire rope.BACKGROUND ART[0002]Plastic impregnated ropes are recommended for severe mining applications where the rope is exposed to high levels of wear and fatigue and particularly where there is a possibility that abrasive dust, dirt or corrosive material might penetrate the rope during normal operation.[0003]The steel wire rope is impregnated by a special process whereby the individual strand gaps within the rope are filled with a sealing thermo-plastic material forming a protective layer between the individual strands and around the core of the rope.[0004]Plastic impregnation protects the rope from dirt and dust penetration and other corrosive materials, and also from internal wear from friction between the strands. Therefore, the life of the rope is greatly prolonged. In addition, plastic...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): D07B1/16D07B1/06
CPCD07B1/162D07B1/165D07B1/0673D07B2201/1016D07B2201/2019D07B2201/2061D07B2401/208D07B2201/2072D07B2201/2073D07B2201/2076D07B2205/305D07B2205/3067D07B2401/207D07B2201/2062D07B1/16D07B2801/24D07B2801/20D07B2801/14
InventorROMMEL, HENDRIK
OwnerBRIDON INT LTD