Eccentric Vibrator

Vibrating conveyor.
The blue part vibrates under centrifugal forces created by two shafts carrying eccentrics. Vibration characteristics depend on
- rotation direction and velocity of the shafts,
- angle A between the eccentrics on each shaft
- angle B between the eccentrics between the shafts (set before moving).
For this case there are vibrations in both directions when
- The shafts rotate in opposite directions
- A = 90 deg.
- B = 180 deg.
The green line is locus of a point on the blue part (nearly a slant line).