Exploration • Drilling • Field Services
Fig. 1. The new EVOLUTION TK16plus
.
Special high performance ropes for offshore applications
Roman Predl discusses the novelties in the field of high performance crane ropes for the offshore segment.
A
mong crane manufacturers and crane operators around the globe, EVOLUTION TK16 is considered as one of the best hoisting ropes for various applications in special
foundation engineering, but also for other fields of use such as on (heavy lift) vessel cranes and offshore platforms. Recently, Teufelberger has released an upgraded
version of EVOLUTION TK16. Going by the name of EVOLUTION TK16plus
, it features even
higher breaking loads than other ropes in the same tensile class. Improved set-ups in production with even narrower tolerances have allowed the manufacturer to take minimum breaking strength to yet another level. Now it has become possible to manufacture, on
request, strength class 1960 ropes with the most common diameter sizes that offer up to 7 per cent more breaking strength. Like all the other ropes of the non-rotating TK series, EVOLUTION TK16plus is not prone to rotation of the hook blocks, even at large lifting heights. As a result, it facilitates the accurate ‘positioning’ of heavy loads. Te design also incorporates SUPERFILL
and PLASTFILL technologies and helps crane manufacturers dimension their cranes for smaller
rope diameters, which in turn translates into smaller crane components and significant cost savings. During the rope stranding process, the strands of the lubricated steel core are embedded in a compact plastic cover. Tis PLASTFILL insert has a positive impact on a rope’s life span because it acts like a cushion between the rope’s core and its outer strands and offers resistance to compression and lateral pressures. In addition, it guarantees that the rope’s strands
are spaced equidistantly. Tis improves friction conditions and reduces wear within the rope, giving it tremendous breaking strength. Plasticising and lubricating the strands effectively blocks the ingress of water into the core and makes the ropes highly resistant to corrosion and therefore extremely durable. SUPERFILL technology compacts every single
rope strand in a special procedure which increases breaking strength by more than 30 per cent in comparison to conventional ropes. Additionally, it prolongs the rope’s service life, due to the planar contact of the wires in the strands and reduced nominal stress. Te smooth rope surface helps keep abrasion on rope, sheaves and drums to a minimum. Finally, this technology makes it possible to reduce a rope’s diameter and still achieve the same
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