| 摘要 |
PCT No. PCT/FI96/00041 Sec. 371 Date Jul. 18, 1997 Sec. 102(e) Date Jul. 18, 1997 PCT Filed Jan. 19, 1996 PCT Pub. No. WO96/22547 PCT Pub. Date Jul. 25, 1996A method for determining the position of a feed beam (3a to 3c) of a rock drilling equipment so that first, the position of a base (1) of the rock drilling equipment relative to rock is determined in the general system of coordination and after that, the position of the feed beam (3a to 3c) relative to the base (1) is measured. Measuring devices (6a to 6c) fixedly mounted in the base (1) at a distance from one another and at least two measuring devices (9a to 9c, 10a to 10c) attached to the feed beam at a distance from one another at a predetermined position are used in the method, whereby at least some of the measuring devices comprise a transmitter and at least some a receiver, respectively. The position of the feed beam (3a to 3c) relative to the base is measured, for example, by using the propagation time of the oscillation energy transmitted by each transmitter to various receivers and by calculating on the basis of this the position of the measuring devices (9a to 9c, 10a to 10c) of the feed beam relative to the measuring devices (6a to 6c) mounted in the base (1) and based on this, by calculating the position of the feed beam relative to the base (1) and thus relative to the general coordination of the rock.
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