BOTTOM UNLOADER WITH OVERRUNNING CLUTCH

摘要

A bottom unloading mechanism operating on the floor of a silo includes a cutter arm which is journaled on a central post at the center of the silo for rotation over the floor of the silo. The cutter arm has an endless cutter chain that dislodges the stored material and moves it toward the center of the silo where it is delivered to a discharge conveyor unit disposed in a radially extending trough in the silo floor. The cutter chain is driven by the conveyor unit when operating in one direction only and for that purpose a transmission in the central post includes a driven sprocket powered by the conveyor unit and transferring rotation in one direction to a second drive sprocket for the cutter chain by means of an overrunning clutch mechanism.