Page 57 - Wire Rope News & Sling Technology - August 2018
P. 57

PULLEYS & SHEAVESVES
         Figure 6: Schematic of another exemplary elevator system.  PULLEYS & SHEA
         be a drive sheave. A drive sheave is driven by a machine (not
         shown). Movement of the drive sheave by the machine drives,
         moves and/or propels (through traction) the one or more belts
         16 that are routed around the drive sheave.
           At least one of the sheaves 18 could be a diverter, deflector
         or idler sheave. Diverter, deflector or idler sheaves are not
         driven by a machine, but help guide the one or more belts 16
         around the various components of the elevator system 10.
         Further, one or more of the sheaves 18, such as the diverter,
         deflector or idler sheaves, may have a convex shape or crown
         along its axis of rotation to assist in keeping the one or more

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         Figure 7: Cross-sectional view of an embodiment of an elevator belt.
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         belts 16 centered, or in a desired position, along the sheaves   sales@loosco.com for a quote today.
         18. In some embodiments, the elevator system 10 could use
         two or more belts 16 for suspending and/or driving the eleva-
         tor car 12. In addition, the elevator system 10 could have
         various configurations such that either both sides of the one
         or more belts 16 engage the one or more sheaves 18 (such as
         shown in the exemplary elevator systems in figures 5 and 6)
         or only one side of the one or more belts 16 engages the one        www.loosco.com
         or more sheaves 18.
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