Method and device for setting the direction and/or the inclinati

Details Method and device for setting the direction and/or the inclinati Method and device for setting the direction and/or the inclinati

1978-04-18

1981-06-23

Staab, Lawrence J.

Tool driving or impacting

Automatic control of power operated means

33366, 91419, 173 43, 248550, E21B 702, E21B 704

Patent

active

042744946

ABSTRACT:
An elongated rock drilling apparatus is swingable by positioning power means. Set values of inclination and direction of the rock drilling apparatus are set by prepositioning a first pendulum device relative to the rock drilling apparatus. According to one aspect of the invention the actual values of the inclination and direction of the rock drilling apparatus in perpendicular directions are sensed by means of said first pendulum device. According to another aspect of the invention the actual values of the inclination and direction of the rock drilling apparatus are sensed by means of a second pendulum device. Means are provided for automatically bringing the rock drilling apparatus to a position in which set and actual values of inclination and direction coincide.

REFERENCES:
patent: 2134426 (1938-10-01), Wood
patent: 3094796 (1963-06-01), Atchley
patent: 3113283 (1963-12-01), Fliegler et al.
patent: 3303589 (1967-02-01), Rivinius
patent: 3564531 (1971-02-01), Burgin
patent: 3721304 (1973-03-01), Hanson
patent: 3824699 (1974-07-01), Lenz et al.
patent: 3876309 (1975-04-01), Zicaro et al.
patent: 3896885 (1975-07-01), Dahlstrom et al.
patent: 3975831 (1976-08-01), Jysky et al.
patent: 4022284 (1977-05-01), Crow

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