Hydraulic hammer drill has a deflection unit with a twisting flow channel at the hydraulic pressure inflow or the return line to reduce pressure swings and/or pressure bursts

摘要

The hammer drill, and especially a hydraulic hammer drill (1), has a hydraulic pressure inflow line (7) and a return line (8) back to the pressure source. At least one of the hydraulic flow lines (7,8) is connected to an intermediate deflection (9) at the hammer drill, which has at least one twisting channel to carry the hydraulic fluid under pressure.