To provide a control device for a continuous type unloader capable of keeping constant the bulk articles supplying amount by a belt conveyor device from a screw feeder to a hopper.

The screw feeder of this control device of the continuous type unloader is installed in the lower part of a vertical transport part, consists of an excavating blade driven by a first motor and a screw shaft driven by a second motor, and excavates the bulk articles and takes in, wherein the arrangement further includes a first current sensor for sensing the load current IB of the first motor and a control part to receive sensing signals from the first current sensor and control the motions of the excavating blade and the moving excavation operations. The control part determines whether the load current IB is equal to or more than the deceleration set value IB1 or the stop set value IB2, and if equal to or more than IB1, at least the former of the moving speed of the moving excavation and the excavating blade is decelerated, and if equal to or more than IB2, the moving excavation and the excavating blade are stopped.