Cable core drill head AND CORE DRILL

Abstract

Cable core drill head AND CORE DRILL The invention relates to a cable core drill head (100) for obtaining soil, rock or similar cores with a diameter of between approximately 92 mm and approximately 120 mm, comprising an upper part (110) provided with latches (15) and a lower part (120). The invention is characterized in that the upper part (110) of the core drill head (100) comprises a position indicator system (200) comprising a stop shoulder (1), an upper body (2) and a lower body (5), the upper body (2) comprising a ball (3), a housing (2b) for the ball (3), a ring (4) made of a deformable material having an internal diameter slightly greater than the diameter of the ball (3), and one or more water passages (2a), the lower body (5) comprising a housing (2c) for receiving the ball (3), when the latter has passed through the ring (4) under water pressure brought through the water passages (2a).Abstract figure: Fig. 2.