Rotation device for a boom of a mining or constructions work...

E - Fixed Constructions – 21 – B

Patent

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Details

E21B 7/02 (2006.01)

Patent

CA 2595525

A rotation device (12) for rotation of equipment (13) fastened at the region of a distal end of a boom (9,11), which has a general longitudinal axis, and which is part of a boom device (3) which is fastenable to a carrier (2) for a mining or constructions work rig, wherein the rotation device includes a first rotation unit (Rl) arranged to rotate the equipment around an axis (Al) which is essentially parallel to the longitudinal axis of the boom and a second rotation unit (R2) which is arranged to rotate the equipment around an axis (A2), which forms an angle with the longitudinal axis of the boom. The rotation units (Rl, R2) are fastened to an angle unit (12'), which is included in the rotation device (12) and has rotational axes (Al, 21; A2,22) extending at an angle with respect to each other, and are connectable to the boom (9,11) as well as to said equipment (13) . The invention also concerns a mining or constructions work rig and a boom.

L'invention concerne un dispositif de rotation (12) destiné à la rotation d'un équipement (13) fixé au niveau de la région d'une extrémité distale d'un bras (9, 11) et comprenant un axe sensiblement longitudinal et faisant partie d'un dispositif à bras (3) pouvant être fixé sur un support (2) pour une installation de forage minière ou de travaux de construction, le dispositif de rotation comprenant une première unité de rotation (RI) disposée de manière à faire tourner l'équipement autour d'un axe (A1) sensiblement parallèle à l'axe longitudinal du bras et une seconde unité de rotation (R2) disposée de manière à faire tourner l'équipement autour d'un axe (A2) formant un angle avec l'axe longitudinal du bras. Les unités de rotation (R1, R2) sont fixées sur une unité d'angle (12') comprise dans le dispositif de rotation (12) et comprenant des axes rotatifs (A1, 21 ; A2, 22) s'étendant au niveau d'un angle l'un par rapport à l'autre et pouvant être connectés au bras (9, 11), ainsi qu'à l'équipement (13). L'invention concerne également une installation de forage minière ou de travaux de construction et un bras.

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