Page 58 - Wire Rope News & Sling Technology - August 2018
P. 58

continued from previous page
           Figure 5 illustrates an elevator system 10 in which the el-
         evator car 12 includes a sheave 18 around which the belt 16
         is routed to support the elevator car 12. Similarly, the coun-
         terweight 22 includes a sheave 18 around which the belt 16
         is routed to support the counterweight 22. Each end 24a and
         24b of the belt 16 is terminated at a fixed location such as a


















                                                              Figure 9:  Schematic of an embodiment  of an elevator  belt  fault
                                                              detection unit.
         Figure 8: Cross-sectional view of an embodiment of a cord or rope.  24b of the belt 16 is terminated at the counterweight 22 and
                                                              is movable with the counterweight 22.
         support 26 or other fixed location of the elevator system 10.   Figure 7 provides a schematic of a belt construction or de-
         Figure 6 illustrates an embodiment of an elevator system 10   sign. Each belt 16 is constructed of a plurality of wires 28 (e.g.
         in which, as in figure 5, the elevator car 12 includes a sheave   twisted into one or more strands 30 and/or cords 32 as shown
         18 around which the belt 16 is routed to support the elevator   in figure 8) in a jacket 34. As seen in figure 7, the belt 16 has
         car 12. In this embodiment, however, a first end 24a of the   an aspect ratio greater than one (i.e. belt width is greater than
         belt 16 is terminated at the support 26, while a second end   belt thickness). The belts 16 are constructed to have sufficient




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