Abrégé

The present disclosure relates to a soil displacement drill comprising a drill pipe; a widening at one end of the drill pipe that is provided with (1) a screw blade for screwing the drill into the substrate, and (2) an outlet opening for the passage of material that is introduced for forming the foundation pile; and a flap that is movable between a first position for allowing unhindered screwing of the drill into the substrate and a second position for preventing the material from entering a screw groove. The screw groove is formed in the substrate by the screw blade during unscrewing of the drill from the substrate. The disclosure further relates to a method for forming a smooth foundation pile using such a drill.

Classes IPC  ?

• E02D 5/36 - Pieux en béton ou analogue coulés en place sans utilisation de tubages ou autres coffrages

Abrégé

Disclosed herein is a soil-displacement drill for soil-displacing drilling in a surface in order to form a foundation pile, comprising a drill pipe, a drill head at an end of the drill pipe with several flap leaves which are pivotable between a closed position for closing off the end of the drill pipe and an open position for making this end freely accessible, and one or several closing elements to keep these flap leaves in their closed position and prevent pivoting of the flap leaves which are configured to fail during drilling into the surface in such a way that these closing elements do not impede pivoting of the flap leaves. Additionally, disclosed herein is an assembly of a drill head and one or several closing elements for such a soil-displacement drill, a method for soil-displacing drilling, and a method for converting a soil-displacement drill to form such a soil-displacement drill.

Classes IPC  ?

• E02D 5/38 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages
• E02D 5/72 - Sabots de pieux
• E02D 15/04 - Mise en place du béton dans des tubages, des pieux tubulaires, des forages ou des puits de faible section

Abrégé

The invention concerns a soil-displacement drill (1) comprising: a drill pipe (4); a widening (5) at one end (16) of the drill pipe (4), which is provided with: - a screw blade (6) for screwing the drill (1) into the substrate (2), and - an outlet opening (7) for the passage of material (9) that is introduced for forming the foundation pile (3); - and a flap (8) which is movable between: - a first position for allowing unhindered screwing of the drill (1) into the substrate (2); and - a second position for preventing said material (9) from entering a screw groove, formed in the substrate (2) by the screw blade (6), during unscrewing of the drill (1) from the substrate (2). The invention also concerns a method for forming a smooth foundation pile (3) using such a drill (1).

Classes IPC  ?

• E02D 5/66 - Tubages ou autres coffrages
• E21B 10/44 - Trépans avec une partie transporteuse hélicoïdale, p. ex. trépans du type à visTarières avec une partie pilote ou des parties amovibles
• E02D 5/36 - Pieux en béton ou analogue coulés en place sans utilisation de tubages ou autres coffrages
• E02D 5/56 - Pieux à vis
• E02D 7/22 - Mise en place par vissage
• E02D 5/38 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages

Abrégé

Soil-displacement drill (1) for soil-displacing drilling in a surface (10) in order to form a foundation pile (2), comprising a drill pipe (3), a drill head (4) at an end of the drill pipe (3) with several flap leaves (5) which are pivotable between a closed position for closing off the end of the drill pipe (3) and an open position for making this end freely accessible and one or several closing elements (6) to keep these flap leaves (5) in their closed position and prevent pivoting of the flap leaves (5) which are configured to fail during drilling into the surface (10) in such a way that these closing elements (6) do not impede pivoting of the flap leaves (5). In addition, the present invention relates to an assembly of a drill head (4) and one or several closing elements (6) for such a soil-displacement drill (1), a method for soil- displacing drilling and a method for converting a soil-displacement drill (1) to form such a soil-displacement drill (1).

Classes IPC  ?

• E02D 5/00 - Rideaux de palplanches, pilots ou autres éléments de structure spécialement conçus pour les travaux de fondation

Abrégé

Soil-displacement drill (1) for soil-displacing drilling in a surface (10) in order to form a foundation pile (2), comprising a drill pipe (3), a drill head (4) at an end of the drill pipe (3) with several flap leaves (5) which are pivotable between a closed position for closing off the end of the drill pipe (3) and an open position for making this end freely accessible and one or several closing elements (6) to keep these flap leaves (5) in their closed position and prevent pivoting of the flap leaves (5) which are configured to fail during drilling into the surface (10) in such a way that these closing elements (6) do not impede pivoting of the flap leaves (5). In addition, the present invention relates to an assembly of a drill head (4) and one or several closing elements (6) for such a soil-displacement drill (1), a method for soil- displacing drilling and a method for converting a soil-displacement drill (1) to form such a soil-displacement drill (1).

Classes IPC  ?

• E02D 5/00 - Rideaux de palplanches, pilots ou autres éléments de structure spécialement conçus pour les travaux de fondation

Abrégé

The invention concerns a soil-displacement drill (1) comprising: a drill pipe (4); a widening (5) at one end (16) of the drill pipe (4), which is provided with: - a screw blade (6) for screwing the drill (1) into the substrate (2), and - an outlet opening (7) for the passage of material (9) that is introduced for forming the foundation pile (3); - and a flap (8) which is movable between: - a first position for allowing unhindered screwing of the drill (1) into the substrate (2); and - a second position for preventing said material (9) from entering a screw groove, formed in the substrate (2) by the screw blade (6), during unscrewing of the drill (1) from the substrate (2). The invention also concerns a method for forming a smooth foundation pile (3) using such a drill (1).

Classes IPC  ?

• E02D 5/36 - Pieux en béton ou analogue coulés en place sans utilisation de tubages ou autres coffrages
• E02D 5/38 - Pieux en béton ou analogue coulés en place par utilisation de tubages ou autres coffrages
• E02D 5/56 - Pieux à vis
• E02D 5/66 - Tubages ou autres coffrages
• E02D 7/22 - Mise en place par vissage
• E21B 10/44 - Trépans avec une partie transporteuse hélicoïdale, p. ex. trépans du type à visTarières avec une partie pilote ou des parties amovibles