Apparatus for digging into the ground of the trenches of great depth, with the aid of the milling drums.

摘要

The invention relates to an apparatus for digging into the ground of the trenches of great depth, comprising a chassis equipped with milling drums at its lower part. & br / the upper part (3a) of the chassis (3) is provided with at least one guide member (6) which comprises, in the direction parallel to the axes (5) of the milling drums (4), the ends (7, 8) are separated by a constant distance substantially equal to the thickness of the trench (1), and which can be taken during the operation of the apparatus, a centered position in which the upper part (3a) of the frame is situated substantially at equal distances from the two ends (7, 8) of the guiding member (6), a position offset from one side of the chassis (3) in which the upper part (3a) of the chassis is brought closer to a predetermined distance from one (7) of the ends of the guiding member (6), and an offset position of the other side of the chassis (3) in which the upper part (3a) of the chassis is brought closer to a predetermined distance from the other end (8) of the guiding member (6).