Elevator rope
AssigneeNV Bekaert SA
InventorsBert Vanderbeken, Daniël Mauer, Javier Del Rio Rodriguez
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Abstract
An elevator rope comprising an elastomer coated, multistrand steel wire cable is claimed. In such a cable strands have a lay-length of at least 6.5 times the diameter of the bare cable diameter D. The cable is further coated with an elastomeric jacket, which adheres to the strands with a pull-out force not less than 15×D+15 newton per mm. The advantages of such an elevator rope are amongst others its limited elongation, its reduced diameter and its improved fatigue life.
Claims19
An elevator rope having a bare rope diameter D, said elevator rope comprising a core strand and at least five outer strands twisted around said core strand, said core strand and said outer strands comprising a plurality of steel wires, said elevator rope further comprising a jacket, said jacket comprising an elastomer, said jacket surrounding and penetrating between said outer strands characterised in that
- said jacket adheres to at least said outer strands with a pull-out force expressed in N/mm not less than 15×D+15 where D is expressed in mm and in that;
- the lay length of said outer strands around said core strand is larger than 6.5 times D.
A method to produce an elevator rope having a bare rope diameter D and the product resulting from said method, said method characterized by the following steps:
- A. Assembling the outer strands around the core strand with a lay length that is larger than 6.5 times D.
- B. Coating the rope with a primer in order to obtain a pull-out force expressed in N/mm of at least 15×D+15 where D is expressed in mm.
- C. Applying the outer jacket around the rope.
Dependencies are inferred from the claim text.