Benefits from using 7 strand ropes for hauling and hauling-carrying ropes

Abstract

The key point of my argument is to offer a better and innovative solution to the ropes used on cableways, in order to reduce the 2 major inconveniences that occur with the use of conventional 6 strand wire ropes: noise and vibrations. As we can easily understand conventional 6-strand ropes do not have a smooth profile; this induces large movements of the roller supports, causing noise and vibrations. Additionally, splicing a 6-strand rope implies large tucks, which can interfere with the vehicles suspension grips. to solve these problems Redaelli has developed and manufactured a new-patented wire rope construction with 7 strands. The outcomes are that the profile of the rope is much smoother, preventing large movements of the roller support, and therefore reducing significantly noise and vibration, and the splice results in smaller tucks, as each strand is smaller when compared to 6 strand ropes. By increasing the outside surface, 7-strand ropes also reduce local pressure preventing roller wear and shoot down maintenance. This paper describes all the important factors to take into account in order to manufacture this rope properly. Design criteria--how to design a rope for specific installation; Fibre ("fiber") core dimensioning--Why is it so important for this wire rope construction? Rope prestretching--resulting into the lowest elongation values; Tail wrapping--innovative material for a better splice; Experimental results--see the real deal.