Study on stable coiling of multiple layers of wire rope on cylindrical drum hoists

On the basis of analyzing transiting characteristics of the rope in transiting area, two theoretical formulas length and angle of transiting area are derived by means of differential geometry, mechanics and mathematical analysis methods. Experiments in laboratory and industrial test in site show that when a rope is transiting through transiting area which is designed according to the two formulas, the shock, vibration and wear out of the rope can be lowered largely and stability of rope transiting can be assured.