The invention belongs to the field of self-synchronous vibration machinery, and discloses a dual-drive single
pendulum type sub-
resonance vibration crushing
machine. The dual-drive single
pendulum type sub-
resonance vibration crushing
machine includes a
machine frame, vibrate-isolation springs, a box body mechanism, a
torsion spring, a movable jaw, a fixed jaw, vibration exciters and a master vibration spring. Two eccentric blocks synchronously operate and the
phase difference can be stabilized around at 0 degrees when the two vibration exciters symmetrically installed up and down in the box body mechanism works, two
alternating current motors drive the eccentric blocks to run in reverse so that force components, in the vertical direction, of generated
inertia forces cancel out each other,and the force components, in the horizontal direction, of the generated
inertia forces are superimposed each other so as to drive the movable jaw to realize the self-synchronous relative swing, mutual
extrusion forces are formed by the movable jaw and a static jaw to achieve the purpose of crushing stones. According to the dual-drive single
pendulum type sub-
resonance vibration crushing machine,the self-synchronization principle of the sub-resonance double-vibration-
exciter, the resonance principle and the double-
mass-
body vibration principle are combined to realize energy saving of the crushing machine; and by using the double-
mass-
body vibration principle, the crushing machine has the advantages of large amplitude, large
processing capacity, sensitive response to changes in feeding, stable operation and the like.