Plastic lining materials for multi-rope friction sheaves
Abstract
With the use of multi-rope hoisting systems with friction pulleys, there is a need for new materials suitable for lining the chutes of rope driving pulleys of hoisting machines. The most common lining materials - wood (oak) and rubber-fabric conveyor belt - have insufficient coefficient of adhesion with steel rope (respectively 0,17 and 0,25) with unsatisfactory service life (3-5 months). The coefficient of adhesion of lining materials with steel wire rope should not be lower than 0.3 and should not decrease when wetting the rope; allowable specific pressure on the lining should not be lower than 25 kg/cm^2; service life of lining - at least 5 years; lining should not wear out the ropes and catch fire during prolonged slippage of ropes and should be elastic enough.
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