Seilkraftregelnde Hubwerke: Steigerung der Betriebs- und Lebensdauer von Drahtseilen in Mehrlagenwicklung

Abstract

Mobile, crawler and tower cranes commonly utilise multi-layer spooling drum winches. This amounts to drastically reduced wire rope service life. During operation, changing loads result in an uneven pressure distribution inside the spooling package. This allows local peaks in pressure and relative movement between rope layers, both of which cause higher wear. In this article, we present a novel tension control hoist that reduces negative influence from multi-layer spooling by eliminating variations in rope tension on the spooling package. An additional traction sheave that runs in conjunction with the drum through a torque-drive-control disconnects the working load from the rope tension on the drum. Spooling experiments show an increase in service life and lifetime of 85% and 39%. Mobile, crawler and tower cranes commonly utilise multi-layer spooling drum winches. This amounts to drastically reduced wire rope service life. During operation, changing loads result in an uneven pressure distribution inside the spooling package. This allows local peaks in pressure and relative movement between rope layers, both of which cause higher wear. In this article, we present a novel tension control hoist that reduces negative influence from multi-layer spooling by eliminating variations in rope tension on the spooling package. An additional traction sheave that runs in conjunction with the drum through a torque-drive-control disconnects the working load from the rope tension on the drum. Spooling experiments show an increase in service life and lifetime of 85% and 39%.