Dynamics Analysis of Vibrating Screen Based on Double Compound Pendulum with Single Motor Driving

By Lagrange equation, the dynamic equation of vibrating screen based on double compound pendulum with single motor driving was established. With simulation method, dynamic simulating model was built, and influences of pendulum installing position, stiffness of torsion damping spring of pendulum rod, initial installing angle and length of pendulum rod on motion characteristics of vibrating screen was discussed. Research results showed that, by choosing suitable stiffness of torsion damping spring or length of pendulum rod, this kind of vibrating screen may achieve the approximate linear trajectory, or normal elliptic trajectory of deck; when the angle between the rotating joint of pendulum rod and screen surface equals to initial installing angle of pendulum rod, the vibration of deck is most close to translational motion..