| 摘要 |
Equipment (10) for excavating solid surfaces S, such as made of asphalt or concrete or similar solid materials, for example, in particular for digging trenches in said solid surfaces, said equipment (10) comprising working or digging means (16) rotationally fixed to a main frame (11), and an adjustment frame (30) defining at least one substantially flat contact portion (33) adapted to be placed in contact with a corresponding portion of the surface S to be worked, where the position of said adjustment frame (30) with respect to said main supporting frame (11) may be adjusted so as to adjust the working depth K of said working means (16); and where said adjustment frame (30) is rotationally disengaged from said main supporting frame (11) so that the adjustment frame always perfectly rests on the surface to be worked S irrespective of the particular working conditions. |
