| 摘要 |
<p>The invention comprises a multi-ribbed belt (100) wherein rib tip (32) has a concave arcuate surface (36) disposed between substantially flat surfaces (41,42), which are in turn disposed between rib side surfaces (34,35). The substantially flat surfaces are adjacent to curved surfaces (39,40), which connect to rib side surfaces (34,35). The inventive rib profile and rib compound construction significantly reduce rib tip cracking, which significantly reduces belt flex fatigue under high applied frictional torque. Further, the inventive rib profile and rib compound construction significantly reduces high localized tensile stress/strain at the rib tip and highly localized shear stress at the rib flank, thereby significantly reducing rib tip cracking and rib tear off. The inventive belt also comprises a significantly reduced contact normal force, thereby increasing an operating life of the belt.</p> |
