| abstract |
A foundation system for the excavating in the ground of a pit to be filled with a hardenable mass for the forming after hardening of a foundation pile, comprising a rod-like drive-in member (2), a drill head (3) connected to the lower end of the drive-in member (2), an installation for the lowering into the ground of the drive-in member (2) together with the drill head (3). The drill head (3) comprises a housing (4) having a drive shaft (7) which is rotatable with respect to the housing (4), a drive unit (5) for the driving in rotation, by- means of driving of the drive shaft (7), of at least one digging member (8) positioned on the underside of the drill head (3) being provided in the housing (4), a power supply (6) being provided for the supplying of energy to the drive unit (5), which power supply (6) extends from an energy source above ground to the drive unit (5) in the housing (4) of the drill head (3). |