A modular assembly for handling excavating equipment is disclosed. The assembly includes a first rotating table having a main body; one or more motors, each having a pinion, associated with the main body; a bearing having a fixed ring constrained to the main body and a movable ring that is coaxial and rotatable with respect to the fixed ring; a dragging sleeve integrally coupled with the movable ring coaxially to the bearing; a ring gear integrally and coaxially coupled with the dragging sleeve to engage with the pinion and be moved in rotation by the motors rotating integrally with the dragging sleeve and integrally with the movable ring. The assembly also has a second rotating table adapted to be coupled to a continuous excavating propeller; a plurality of accessories associated with the first rotating table so it can be coupled to a telescopic Kelly rod or to a continuous excavating propeller or to a casing and excavating pipe.

A chuck for a drill head of a rotation rock drilling rig, wherein a plurality of jaws are equally angularly distributed around a grip position axis, wherein the jaws co-operate with actuator means for radial movements of the jaws, and wherein the chuck includes urging means being arranged for influencing the jaws into the release position. The urging means is a partially annular jaw spring surrounding said axis and having two spring ends adjacent to each other. The jaws together form an inside seat for the jaw spring and the jaw spring is arranged for fixing engagement with one of the jaws. The invention also relates to a drill head, a rig and a jaw spring.

An apparatus for rotating a tube or rod is provided. The tube or rod is supported from a mast of a rig and for insertion into a well. The apparatus includes a rotation member for rotating the tube or rod. The rotation member is mounted on the well such that in use, the tube or rod is fed into the rotation member, from above the rotation member, and into the well.

A human-powered borehole drill bridges the gap between large drilling rigs and the other less-effective manual methods. Intended mainly for developing countries, the design is affordable and also extremely simple, as very little product support or spare parts will be needed. The drill uses conventional drill pipe and drill bits allowing the drill system to mimic more conventional methods of drilling and existing hardware to maintain uniformity in drilling and easier access to more drilling products.

Provided is a drilling arrangement (10) comprising a truck-mounted rotary table stage (12), a truck-mounted drilling mast (16) comprising a rotary head drive (18) displaceable along said mast (16) to effect drilling, a truck-mounted drill pipe gripper (20) to grip and hold a drill string (22), and a truck-mounted drill pipe loading assembly (24) configured automatically to load sections of drill pipe to said drilling mast (16) to form a drill string (22). Drilling arrangement (10) also includes at least one section of torque transference pipe (28) which comprises rotary head couplings (30) defined proximate either end (32) thereof, the torque transference pipe engageable with the drill string (22). In this manner, the drilling arrangement (10) is configured to drill a well by the pipe loading assembly (24) interchanging drill pipe sections (26) with the at least one section of torque transference pipe (28) within the drill string, the rotary head drive (18) applying drilling torque only when engaged with the rotary head couplings (30) of the torque transference pipe (28), and the gripper (20) gripping the drill string (22) to facilitate the interchanging of drill pipe and torque transference pipe and the rotary head drive moving between rotary head couplings (30).