In conventional traction drive elevators, drive sheaves are furnished with undercut grooves to achieve high traction to safely lower, stop and hold elevator. In order to keep sufficient traction through the service life, wear of rope and sheave must be controlled [1]. In traction driving, a micro slip of the wire rope, called creep, on the drive sheaves because of the elastic stretch behavior of the rope. The micro slip conditions as a normal load, sliding velocity, contact period and the number of contact through the service life vary according to elevator specifications and systems. Therefore, it is important to estimate the effect of the micro slip condition on wear of rope and sheave. An experimental study has been undertaken into the wear performance of the interface between the cast iron sheave and steel wire rope of elevator. The effects of normal load and contact period on wear were investigated at typical conditions of elevator systems.
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