SCREW PILE AND PILE DRIVING METHOD Russian patent published in 2007 - IPC E02D5/56 

FIELD: construction, particularly pile foundation erection and mechanism installation in ground.

SUBSTANCE: screw pile comprises seat for fixing means receiving made from upper end side thereof. The fixing means provide pile retention in inventory key of pile screwing-on machine during pile lifting and installation in place for further pile driving so that the fixing means may be removed after pile driving operation termination. Pile driving tool comprises outer inventory key made as metal tube with head to connect thereof with screwing-on machine rotator. Pile driving tool also has device to transmit torque from inventory key to pile head and stop means to secure pile in the inventory key. Stop means has fixer to be installed in central through orifice made in upper tube part of inventory key and holder. Lower holder part is provided with means for fixation thereof on pile seat. Holder head section has lead-in cone and centering belt. Inventory key head has centering orifice arranged from inner tube side and adapted to arrange holder head section. Fixer may retain the holder with pile connected thereto in inventory key tube.

EFFECT: possibility to drive pile in densely built-up urban areas, possibility to use the same tools for different pie driving, increased output and decreased power inputs for pile foundation erection.

8 cl, 10 dwg