Track for tower slewing cranes

摘要

A self-contained track (6) laid in a circle for at least two tower slewing cranes (4, 5) working in the interior of a tower structure narrowing towards the top is extended spirally into the interior, preferably towards the centre of the circle, via a turnout (7) and a track end piece (8). This configuration enables a building crane to be used up to the highest levels when constructing, for example, cooling towers. <IMAGE>