DEVICE FOR COMPENSATING DEVIATIONS WHEN PIERCING WITH A DRILL GUIDED BY FOUR-BAR MECHANISM

摘要

The invention relates to a device meant to compensate deviations from vertical linearity position of a working drill which makes planting recesses in horizontal and sloped grounds of up to 15°, intended for drilling equipments used in afforestation of degraded lands. According to the invention, the device comprises two pairs of plates (1) having some guides (2) provided with limit stops which are symmetrically mounted sidewise, left-right, while, on some interior plates there is mounted a reducer (R) of a drill which slides horizontally, free of blocking, along the whole length of the guides (2), thereby taking over the deviation from the initial vertical position up to the final position, which may occur during the works for making plating recesses.