Hoist unit and load-bearing medium for such a unit

An elevator system has a suspension member for supporting and/or moving an elevator car and being guided and driven by a traction sheave of a drive unit. The suspension member is a cord or rope that includes a body made of a polymer and at least one tension member made of wires extending in the long...

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Bibliographic Details
Main Authors BERNER, OLIVER, ACH, ERNST, PERIC, DANILO
Format Patent
LanguageEnglish
French
German
Published 22.08.2012
Subjects
CABLES OTHER THAN ELECTRIC
ELEVATORS
ESCALATORS OR MOVING WALKWAYS
HAULING
HOISTING
LIFTING
PERFORMING OPERATIONS
ROPES
ROPES OR CABLES IN GENERAL
TEXTILES
TRANSPORTING
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Summary:An elevator system has a suspension member for supporting and/or moving an elevator car and being guided and driven by a traction sheave of a drive unit. The suspension member is a cord or rope that includes a body made of a polymer and at least one tension member made of wires extending in the longitudinal direction of and embedded in the body. A thickest wire in the tension member has a bending stress b in a range from 350 N/mm2 to 900 N/mm2 when bending the tension member about a minimum bending radius r, and wherein the bending stress is a function of the elastic modulus E and the diameter δ of the thickest wire, according to the equation b=(δ*E)/2r, wherein the suspension member is run about a pulley having a minimum diameter D corresponding to no more than two times the minimum bending radius (D 2r).
Bibliography:Application Number: EP20100761015