Ground displacement auger head for making piles in the ground

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 7/26 (2006.01) E02D 5/36 (2006.01) E02D 5/62 (2006.01) E02D 7/22 (2006.01) E21B 10/44 (2006.01)

Patent

CA 2174119

Ground displacement auger head (1) for making piles (13) in the ground, comprising a tip (12), a displacement body (14) having at least over a lower portion (15) a core diameter increasing in a direction away from said tip (12), and at least one screw flange (16) extending at least over said lower portion (15) of the displacement body (14). To obtain a more efficient displacement, the pitch of the screw flange increases and the core diameter of the displacement body (14) increases preferably discontinuously via a number of transition slopes (17).

L'invention concerne une tête (1) de tarière de terrassement permettant de poser des pieux dans le sol et comprenant une pointe (12), un corps de terrassement (14) présentant au moins, sur une partie inférieure (15), une troncature croissant à mesure que l'on s'éloigne de ladite pointe (12), et au moins une colerette à vis (16) s'étendant sur au moins ladite partie inférieure (15) du corps de terrassement (14). Afin d'obtenir un terrassement plus efficace, le pas de la collerette à vis est croissant, et la troncature du corps de terrassement (14) croît, de préférence, de manière discontinue par paliers séparés par un certain nombre de pentes de transition (17).

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