Patent ID: 8083048
Filing Date: 2011-12-27
Classification: B65G,B66B

Abstract:
1. A conveyer apparatus for minimizing vibration, comprising: a footstep guide rail; a plurality of footsteps having footstep rollers moving along the footstep guide rail; a footstep chain for connecting the footstep rollers of the plurality of footsteps each other at predetermined pitches; a rotating device for generating a driving force to move the footsteps in a designated direction; and a drive sprocket rotated by the driving force of the rotating device and transmitting the driving force of the rotating device to the footstep chain, wherein the footstep guide rail is arranged so that a horizontal surface thereof is set at an elevation position obtained by adding a designated offset amount to a tangential line of the drive sprocket along the horizontal surface, and the footstep guide rail is provided, at its one end on an introductory side of the drive sprocket, with a curved part that is projected or recessed from the horizontal surface, and in the case where “Vt” represents a pitch-circle velocity of the drive sprocket, “Vo” represents a target average velocity of one of the footstep rollers connected and moved by the footstep chain and “reference position” represents a position where a velocity of the footstep roller becomes “Vo” as a result of its decelerating from “Vt”, one of a plurality of “reference positions” existing along the footstep guide rail, which is the closest to the drive sprocket, is established as a turning point from the horizontal surface of the footstep guide rail to the curved part.