Casing for noise attenuation in a rock drilling rig
AssigneeSandvik AB
InventorsArto Vento, Jukka Tantari, Kari Saarinen, Pasi Julkunen, Veikko Lintu, Seppo Peltola, Tapani Sormunen
Life of this patent
Estimating the term…
Abstract
A rock drilling rig includes a movable carrier with a boom attached to it and movable in various ways. The free end of the boom is provided with drilling equipment. The drilling equipment is enclosed in a casing that prevents noise generated during drilling from spreading to the surroundings. The casing is arranged to move together with a feed beam and relative to the cradle mounted on the end of the boom. A flexible noise attenuating skirt projects forwardly from a front end of the casing for forming a sealed chamber around a drilling head.
Claims24
A rock drilling rig comprising:
- a carrier;
- a boom attached to the carrier for movement relative thereto;
- a cradle attached to a free end of the boom;
- a feed beam attached to the cradle for movement relative thereto;
- a drilling mechanism attached for movement with the feed beam;
- a casing attached for movement with the feed beam and the drilling mechanism, whereby the casing, the feed beam and the drilling mechanism together constitute a movable unit movable relative to the cradle, the casing extending around and enclosing the feed beam and the drilling mechanism for attenuating noise generated during drilling, the casing being spaced from the feed beam and the drilling equipment, a front end of the casing being opened to enable a front end of the drilling mechanism to project out of the casing, the casing including an opening formed therein rearwardly of the front end for permitting the movable unit to move relative to the cradle.
A casing adapted to encompass a drilling mechanism of a rock drilling rig for attenuating noise generated thereby, the casing including an open front end adapted to admit a front end of a drilling mechanism, and an elongated opening disposed rearwardly of the front end and adapted to admit a cradle;
- a flexible skirt mounted at the front end and projecting forwardly therepast, the skirt adapted to engage the ground and form a seal therewith;
- and a flexible noise curtain covering the opening and configured to enable a cradle to slide along the opening.
Dependencies are inferred from the claim text.