Tamrock Oy

Heikki Rinnemaa

Ari Tuunanen

Juhani Lappalainen

Pertti Saarelainen

Method and equipment for aligning the feeding beam of a rock drilling

A method, a rock drilling equipment (1) a measuring device (10) for aligning a feeding beam (5) in the rock drilling equipment (1) with a drilling direction. In the method, an angle Sg(g) between the drilling direction (S.sub.p) and a direction (S.sub.t) defined by a fixed point selected as a point of sight (T) is measured and stored in a memory, and the feeding beam (5) is adjusted at the following holes so that it is positioned at an angle .beta. corresponding to the drilling direction (S.sub.p) measured with respect to a direction (S.sub.a) of a carrier (1a) by means of the point of sight (T). The measuring device (10) comprises two mutually turntable discs (11, 12) of which one is positioned to indicate the drilling direction (S.sub.p) and the other is turned in such a way that its measuring line points towards a fixed point serving as a point of sight (T), thus defining a reference line (S.sub.t).

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Tampere, Finland

Heikki Rinnemaa