Rope and elevator
A rope and an elevator. The rope comprises a core, an outer layer of strands, comprising at least four outer strands, and an elastomeric coating creating at least the outer surface of the rope.
1 . A rope, comprising
a core comprising an elastomeric material, the core having a core strand embedded therein,
an outer layer of strands surrounding the core, the outer layer of strands including at least four outer strands, and
an elastomeric coating creating at least an outer surface of the rope,
wherein the core has an outer shape that fills space between the at least four outer strands, and
the elastomeric coating is a multi-layer coating comprising an outer elastomeric coating layer having a Shore hardness in a range of Shore 70D-92A, and an inner elastomeric coating layer having a Shore hardness in a range of Shore 92A-95A.
2 . The rope as claimed in claim 1 , comprising
an inner layer of strands arranged between the core and the outer layer of strands, the inner layer of strands including a plurality of inner strands.
3 . The rope as claimed in claim 2 , wherein
the plurality of inner strands have a regular lay.
4 . The rope as claimed in claim 2 , wherein
the plurality of inner strands have a lang lay.
5 . The rope as claimed in claim 2 , wherein
a lay length of each inner strand of the plurality of inner strands is selected in a range of 3.0×di-20×di.
6 . The rope as claimed in claim 5 , wherein
the lay length of each inner strand of the plurality of inner strands is selected in a range of 3.5×di-7×di.
7 . The rope as claimed in claim 2 , wherein
a relation of a lay length of each inner strand of the plurality of inner strands and a lay length of each outer strand of the at least four outer strands is selected so that that all strands of the at least four outer strands and the plurality of inner strands and wires thereof are configured to be loaded by a stress varying not more than 10% in an axial strain of the rope.
8 . The rope as claimed in claim 2 , wherein
the elastomeric coating has adhesion to all inner strands of the plurality of inner strands.
9 . The rope as claimed in claim 8 , wherein
the elastomeric coating has adhesion to all wires in all inner strands of the plurality of inner strands.
10 . The rope as claimed in claim 1 , wherein
a lay length of each outer strand of the at least four outer strands is selected in a range of 3.0×do-20×do.
11 . The rope as claimed in claim 10 , wherein
the lay length of each outer strand of the at least four outer strands is selected in a range of 3.5×do-7×do.
12 . The rope as claimed in claim 1 , wherein
the elastomeric coating has adhesion to all outer strands of the at least four outer strands.
13 . The rope as claimed in claim 1 , wherein
the elastomeric coating has adhesion to all wires in all outer strands of the at least four outer strands.
14 . The rope as claimed in claim 1 , wherein
the elastomeric coating has adhesion to the core.
15 . The rope as claimed in claim 1 , wherein
the elastomeric coating has a thickness that is 7-15% of a diameter of the rope.
16 . The rope as claimed in claim 1 , wherein
the elastomeric coating comprises a thermoplastic elastomer.
17 . An elevator, comprising:
an elevator shaft,
an elevator car arranged in the elevator shaft, and
a roping system, wherein
the roping system comprises the rope as claimed in claim 1 .
18 . The elevator as claimed in claim 17 , comprising:
a machinery for driving moving elevator components, said machinery being attached to an elevator car guide.
19 . A rope, comprising
a core comprising an elastomeric material, the core having a core strand embedded therein,
an outer layer of strands surrounding the core, the outer layer of strands including at least four outer strands,
a plurality of filler strands surrounding the outer layer of strands, and
an elastomeric coating creating at least an outer surface of the rope,
wherein
the plurality of filler strands have a diameter smaller than a diameter of the at least four outer strands, and
the plurality of filler strands are spaced apart from the outer layer of strands, between the outer layer of strands and the outer surface of the rope along a radial direction from the core.