| 摘要 |
A steel rope for pulley blocks for drilling hoists, with its metal core made of six strands consisting of thirty one wires each, whereas the strands are wound on organic cores, and the volume among the external strands is preferably filled with a layer of organic inserts and/or the internal volume among the strands is filled with a layer of organic inserts, characterized in that on the metal core, it has eight strands (3) wound, whereas each strand consists of thirty six wires, whereas the "external strand wire diameter (3) / external strand wire diameter (2)" ratio is equal to 1.48 / 1.52, and the "strand (3) pitch in the rope / strand (2) pitch in the core" ratio is equal to 1.25 / 1.52.<IMAGE>
|
