| 摘要 |
The invention refers to hydraulic equipment which can be mounted on a dipper arm, so that it can be used for vertical rotary percussion drilling on any kind of land surface, including river beds and rocky ground. According to the invention, the hydraulic equipment is made up of: a drilling derrick (6), which is joined to the excavator in two points, namely to the chassis of the excavator, by means of a horizontal truss (5), and to its dipper arm; a hydraulic hammer (1), which is fixed to the drilling derrick (6) by means of a saddle (2) and is moved vertically by means of a cable that is engaged by a hydraulic hoist (4) fixed onto the horizontal truss (5); a vertical penetration pipe (7), which is fixed at the upper end onto the hydraulic hammer (1) by means of an adapter (8), and has a toothed lower end; two hydraulic cylinders (13, 14) which ensure the partial rotation of the assembly formed by the hydraulic hammer (1) and the penetration pipe (7), by means of a casing (11) into which the hammer (1) is introduced, and a discharge pipe (9), which has a cover (10) and is positioned inside the penetration pipe (7).
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