Zdanevich S. The substantiation of rational dynamic characteristic of machines for reeling of a thin hot-rolled strip

The thesis is dedicated to problems of perfecting of wire-winding machines of an ardent band with the purpose of increasing of their use reliability on the basis of theoretical and experimental researches of indices of their operating conditions. In the research work a complex system approach to analysis of the mechanism of a coil formation in roll-type coiler and roller-mandrel-type coiler of an ardent band, technique of definition of dynamic loads in flexural and torsional vibratory systems of a barrel and also in the mechanism of a coil is offered. The basic features of oscillations in elastic tribomechanical system of the mechanism of formation of a coiler of the hot-rolled strip on the grounds of the model with a non-stationary connection are investigated. The replacement of the non-linear asymmetrical characteristic of the non-steady rigidity of connection by the equivalent straight-line characteristic by the method of straight line linearization is carried out; the equivalent linear model is obtained. The technique of selection of rational value of torsional stiffness of a transmission of a reel block with taking into account the elasticity of technological connection and variability of the elastic - mass parameters of a vibratory system is offered.