JACKETED SUSPENSION TRACTION MEMBER FOR AN ELEVATOR WITH DIFFERENT CORDS FOR LOAD SUSPENSION AND FOR TRACTION PROVISION

摘要

A jacketed suspension traction member (31) for an elevator (1) is proposed. The suspension traction member (STM) (31) comprises two different types of cords, i.e. a first type of cords (33) comprising mainly load suspending strands (39) and a second type of cords (35) comprising mainly traction providing strands (49). The STM (31) further comprises a common jacket (37) made from a bendable jacket material jacketing both the first and second types of cords. Therein, the load suspending strands (39) are comprised within the jacket (37) with a lower adhesion to the jacket (37) than the traction providing strands (49).;By enclosing two different types of cords (33, 35) within a common jacket (37), each type of cords (33, 35) may be either optimised for a suspension function or for a traction function of the STM (31) by e.g. specifically adapting its positional arrangement, physical characteristics, etc.