EP 3683179 A1 20200722 - ELEVATOR ROPE
Title (en)
ELEVATOR ROPE
Title (de)
AUFZUGSEIL
Title (fr)
CÂBLE D'ASCENSEUR
Publication
Application
Priority
- JP 2017173775 A 20170911
- JP 2018026671 W 20180717
Abstract (en)
Elevator ropes that allow reduction of the amount of change of rope elongation that results from a change in rope tension due to passengers getting in and off an elevator even if the breaking strength of ropes is improved to reduce the number of ropes are provided. An elevator rope of the present invention is an elevator rope formed by intertwisting a plurality of strands formed by intertwisting a plurality of steel wires, wherein when a diameter of the elevator rope is defined as d (mm), intervals between turns of the strands are defined as a rope pitch P<sub>1</sub>, and intervals between turns of the steel wires are defined as a strand pitch P<sub>2</sub>, a ratio a of P<sub>1</sub>to d, a ratio b of P<sub>2</sub>to d and a breaking strength T (N) of the elevator rope satisfy the following Formula A. In Formula A explained above, E denotes a modulus of longitudinal elasticity (MPa) of a material used in the elevator rope, G denotes a modulus of transverse elasticity (MPa) of the material used in the elevator rope, and N denotes the number of the strands.
IPC 8 full level
CPC (source: EP)
B66B 7/06 (2013.01); D07B 1/0673 (2013.01); D07B 2201/1014 (2015.07); D07B 2201/1044 (2013.01); D07B 2201/2025 (2013.01); D07B 2401/2005 (2013.01); D07B 2501/2007 (2013.01)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3683179 A1 20200722; EP 3683179 A4 20210519; CN 111065594 A 20200424; CN 111065594 B 20210727; JP 2019048698 A 20190328; JP 6767327 B2 20201014; WO 2019049514 A1 20190314
DOCDB simple family (application)
EP 18853024 A 20180717; CN 201880057739 A 20180717; JP 2017173775 A 20170911; JP 2018026671 W 20180717