Rope drum system

A rope drum for a crane, elevator or winch capable of drawing in and releasing out a rope under tensile stress, which rope drum comprises:

• a rotatable drum part;
• support means configured to provide a number of grip sections for supporting the rope through the grip sections as a continuous spiral surrounding the drum part by at least two rounds so that, when the drum part is rotated, the number of grip sections move due to guidance of the support means along the drum part depending on rotating direction of the drum part towards a first end of the drum part or a second end;
• and
• prevention means that together with the support means are configured to restrict the movement of the grip sections supporting the rope on the drum part with regard to the drum part in the direction of a perimeter to a maximum that is defined by a mutual geometry of the prevention means and the support means;
• wherein the prevention means comprise a number of substantially axial first supports in the direction of the perimeter of a shell of the drum part separately from each other;
• the support means comprise a number of guide segments;
• wherein
• the first supports deviate from the direction of the rotation axis of the rope drum by at most 10°;
• and
• the first supports are configured to function as part of the prevention means only after the guide segment has settled on the rope drum and after a start section of the spiral.