Multi-strand steel wire rope

Abstract

One aspect of this invention concerns a multi-strand steel wire rope ( 28, 32, 36, 46, 50 ) comprising multiple strands ( 3, 10, 38 ) laid up helically on a core ( 30, 34, ), characterised in that at least some of the strands are deep strands ( 10, 38 ), i.e. strands with a heightwidth ratio greater than unity. Another aspect of the invention concerns the deep strand ( 10, 38 ) itself.

1 . A multi-strand steel wire rope comprising multiple strands laid up helically on a core, characterised in that at least some of the strands are deep strands, i.e. strands with a height:width ratio greater than unity. 
   
   
       2 . A multi-strand steel wire rope according to  claim 1  wherein the ratio height:width of the deep strands of the rope is 1.04 or greater. 
   
   
       3 . A multi-strand steel wire rope according to  claim 2  wherein the rope is of a single layer construction. 
   
   
       4 . A multi-strand steel wire rope according to  claim 3  wherein the rope has a core and a single layer of deep strands, and no other strands, laid up helically on the core. 
   
   
       5 . A multi-strand steel wire rope according to  claim 3  wherein the rope has a core and a single layer, including both deep strands and other strands, laid up on the core. 
   
   
       6 . A multi-strand steel wire rope according to any one of the preceding claims wherein each deep strand includes a core having the cross-sectional shape of a non-equilateral triangle. 
   
   
       7 . A multi-strand steel wire rope according to any one of  claims 1  to  5  wherein each deep strand comprises, in cross-section, parallel rows of wires arranged generally radially. 
   
   
       8 . A strand for a multi-strand steel wire rope, characterised in that the strand is a deep strand having a ratio height:width of 1.04 or greater. 
   
   
       9 . A deep strand according to  claim 8  wherein the strand has a core with the cross-sectional shape of a non-equilateral triangle and wires laid up on the core. 
   
   
       10 . A deep strand according to  claim 8  wherein the strand comprises, in cross-section, parallel rows of wires arranged generally radially.