Method of driving hollow piles into the ground
AssigneeKabushiki Kaisha Komatsu Seisakusho
InventorsHiroaki Tamaki, Joji Nakamura
Life of this patent
Estimating the term…
Abstract
A method and apparatus for driving a hollow pile into the ground. By using a hollow rod having a short auger fixedly secured to a leading end portion thereof, excavated earth and sand are lifted to and around the upper portion of the auger where compressed air is spouted from nozzle orifices formed in the hollow rod thereby lifting the excavated earth and sand through the hollow pile and consequently discharging the same from the hollow pile. As earth and sand are discharged from the hollow pile, the pile is sunk or driven into the ground.
Claims5
A method of driving a hollow pile into the ground, comprising the steps of:
- (a) inserting a hollow rod into the hollow pile, said hollow rod having a short auger fixedly secured to a leading end portion thereof and a cutter mounted to the leading end thereof;
- (b) excavating the ground by the cutter and lifting excavated earth and sand to and around the upper portion of the short auger by rotating the same;
- and
- (c) spouting highly pressurized air from a nozzle provided at a leading end portion of the hollow rod thereby lifting the excavated earth and sand to and beyond the upper end of the hollow pile and discharging the same from above the hollow pile while continuously excavating the ground by the cutter thereby driving the hollow pile deep into the ground.
Dependencies are inferred from the claim text.