Device for extracting earth material from pipe driven into soil has flaps held by cable extending fr

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Device for disengagement of soil masses of a driven tubular casing into the ground, with a gripper tube, whose outer diameter is slightly smaller than the inside diameter of the mandrel and one end of which is provided with pivotable closure flaps, in such a way that the closing flaps grip arm pipe into the tubular casing during the entrance of the automatically fall into the soil material in a subsequent lifting be moved into an opening position and into a closed position and include the soil material can fall out fall, wherein the pivoting flaps are held from one to the other end of the cable guided grip arm pipe and the cable is connected to an actuating device, in such a way that this the cable by the ground pressure lowers and the closure flaps in a deployed position, in which the soil material from the gripper tube.