Patent ID: 8490716

Claim:
Boom arrangement for use in a mining or construction machine, comprising a first boom section with a first end and a second end, wherein said first end is designed to be fastened to a carrier, and said second end is designed to carry a drilling machine, wherein said boom arrangement furthermore comprises a first rotational linking means with a first axis of rotation (B 1 ) and a second rotational linking means with a second axis of rotation (B 2 ), wherein: said first rotational linking means is arranged at said first end of said first boom section and said second rotational linking means is arranged at said second end of said first boom section such that said axes of rotation (B 1 , B 2 ) are fixed in relation to each other, and said axes of rotation (B 1 , B 2 ), when said boom arrangement is fastened to said carrier, make a first and second angle, respectively, with the vertical direction of the carrier, said first and second angles being in the interval of 0 to 45°, wherein said first boom section is designed to carry said drilling machine by a third rotational linking means to enable drilling in any radial direction looking from the axis (A) of the third rotational linking means, wherein said first boom section comprises a first at least partly platelike element arranged at a third angle relative to said first (B 1 ) or second axis (B 2 ) of rotation, wherein at least one of said first and said second rotational linking means is fastened to said first element for maintaining said fixed relation between said axes of rotation, and said third angle is in the interval of 45-90°.