Abstract
On the assumption that the motion of vibrating conveyor is linear sinusoidal and a conveyed material is a particle, mechanism of progression of a particle is analyzed and experimented. Analysis is made in consideration of D'Alembert force due to horizontal acceleration of the conveyor and frictional force between a particle and the conveyor surface. Even when maximum vertical acceleration of the conveyor is less than the gravity acceleration g, the particle moves forward due to the difference between forward and backward slides which arise between the particle and the conveyor surface. And when maximum vertical acceleration is greater than g, the particle moves forward due to forward and backward slides and jump in space. Path of progressive motion of the particle and progressive speed obtained from the experiment coinside with results of the analysis.