wiredInUSA November 2019

Rope with built-in safety

Tower crane manufacturer Wolffkran has acquired a stake in Trowis, a German manufacturer of high-performance fiber ropes for lifting and handling applications. Wolffkran identified the potential of Trowis ropes while they were in the research phase, and actively supported the foundation of the Trowis company in July 2019. Trowis fiber ropes feature a doubly redundant, self-monitoring composite fiber construction. Sensor elements,

integrated in the rope, monitor possible fiber fracture in the load-bearing rope component and signal these to the crane operator. At this point, the load is taken over by the redundant load-bearing reserve in the rope, ensuring that the load can be lowered safely. Trowis believes that its ropes have up to seven times longer service life than steel ropes. Extensive testing is under way, and commercial production is expected to begin shortly.

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