Research On Dynamic Characteristics Of Belt Conveyor

Belt conveyor is the continuous transportation machine whose conveyer acts as drawing mechanism and carrying mechanism. The traditional rigid body theory places emphasis on the Conveyor system analysis and calculation of static characteristics and takes insufficient account of the dynamic characteristics of Conveyor system. It results in the calculation precision of large conveyor design and calculation very low. Therefore, it is necessary to do comprehensive dynamics analysis to the major components of large conveyor.The static characteristics and dynamic characteristics of conveyer and the viscoelasticity essential feature of conveyer are analyzed; the transverse and longitudinal vibration equation of conveyer is built and the equivalent elasticity modulus of the conveyer is derived; the discrete dynamic model and dynamic equation of Conveyer is built by adopting Kelvin-Voigt viscoelasticity model and the vibration equations of tension device, drive device, redirection device and brake apparatus are determined. The starting and brake discrete dynamic models of head tensioning conveyor are built by using finite element method. The solution method of parameters which are in the starting and brake discrete models of conveyor. The discrete models of conveyor is built in software of AMESim. The simulation to the dynamic characteristics of conveyor during the period of starting and brake is done. By studying and analyzing the simulation result, the best starting acceleration curve and the best starting time are got; the effect of arcsine and inverse parabolic acceleration curve on downtime is compared.