DRILLING MACHINE AND IN EARTH BUILDING-UP METHOD OF CAST-IN-PLASE DISPLACEMENT PILES Russian patent published in 2009 - IPC E02D7/00 E21B7/02 

FIELD: construction.

SUBSTANCE: drilling machine contains a mast, a drilling gear, set on slides arranged moving along the mast, drill pipe, driven into rotation by drilling gear and moving along the mast for driving through the drill-hole, and fixed to the drill-pipe through a connective branch tubular bin with accumulative space for filler used for filling up of drill-hole when pulling out the drill-pipe. Tubular bin is arranged under the drilling gear, and connective branch goes through the latter. A swivel connected with a bin is installed on the connective branch above the drilling gear, and between the drilling gear and tubular bin there is a support stand going in the drilling direction and holding the swivel. Method of building-up of cast-in-place displacement pile is conducted by means of a drilling machine described above.

EFFECT: possibility of drill-pipe direct approaching drilling gear without necessity of placing intermediate elements for accumulation of the filler in between.

8 cl, 4 dwg