Zakora O. Reducing dynamic loads tunnel escalator with intermediate placement drive

Study of the propulsion performance characteristics of escalators of the common design and escalators with intermediate placement drive has been performed and the means of design study improvement were specified. Dynamical model of the escalators mechanical system and procedure of model input data selection using conformity factor between stiffness experimental and calculated peak values has been developed. Study of dynamical characteristics of tunnel escalators mechanical system with intermediate placement drive depending on lifting height, performance and traverse speed of staircase bed has been performed. Modeling of escalators resonance vibrations under external disturbances has been performed. Method of express-evaluation of the loads in escalators draw gear, which allows to avoid solving of the differential equations of motion and choose optimal overall dimensions, traction and mass characteristics of the hauling chain and to adjust escalators structural and operational characteristics in terms of maximal application of the chain traction capabilities of specified dimension types has been developed. Advices concerning selection of the structural and operational characteristics of the escalators and supply of reliable maintenance of the escalators handrail equipment had been developed. Keywords: tunnel escalator, chain traction body dynamic model, dynamic properties, structural and operational characteristics.