DEVICE FOR BORED PILE CONSTRUCTION Russian patent published in 2009 - IPC E02D5/00 

FIELD: construction.

SUBSTANCE: invention concerns construction, particularly methods of bored pile construction on any ground, and can be applied in industrial and civil construction for construction of new basements and reinforcement of existing basements, and in construction of supports bearing alternating loads. Device for bored pile construction includes hollow auger column with metal case inside the column, and vane auger bit. Spring plate elements are rigidly mounted at peripheral part of metal case in horizontal plane in pairs opposing each other and distributed in height, so that each next pair of spring plate elements is perpendicular to the previous pair, and vane auger bit features one vane declining from the pile axis and connected by joint to the bit case to maintain free movement of metal case to borehole. In addition, arch length of spring plate element is larger than possible borehole diametre in any section.

EFFECT: extended device application sphere in pile construction, enhanced carrying capacity and quality of pile.

2 cl, 3 dwg