Patent ID: 8443918

Claim:
Excavation equipment for the construction of compaction piles comprising a tool mounted at the end of a drilling rod; the tool comprising: a shaft provided on an end with digging teeth and with at least a plate for collecting debris; a screw extending around the shaft; and an inward radially extending compactor for compacting ground dislocated along said screw; wherein the screw comprises at least two screw elements, in an upper part fixed directly on the shaft and in a lower part fixed on a cylindrical element inserted on the shaft; the compacting compactor being positioned on the screw of the cylindrical element; the shaft and the plate rotating between a first position corresponding to excavation and a second position corresponding to ascent; wherein the first position of the plate is an open position and the second position of the plate is a closed position; each of the at least two screw elements of the shaft comprising a continuation of a corresponding screw of the cylindrical body depending on the angular position of the shaft.