Method for aligning a feeding beam in a rock drilling equipment

Details Method for aligning a feeding beam in a rock drilling equipment Method for aligning a feeding beam in a rock drilling equipment

1993-05-07

1994-09-20

Bui, Thuy M.

Boring or penetrating the earth

Automatic control

E21B 700

Patent

active

053481054

ABSTRACT:
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).

REFERENCES:
patent: 4022284 (1977-05-01), Crow
patent: 4343367 (1982-08-01), Mashimo
patent: 4604724 (1986-08-01), Shaginian et al.

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