Drive device for the percussion mechanism of a percussion or drill hammer

摘要

The drive device contains an angle crank (19), one leg (21) of which is linked with its outer end to a piston (31) of the percussion mechanism. The piston (31) can be reciprocated axially in a guide tube (29). The other leg (20) of the angle crank (19) is mounted eccentrically and rotatably at one end on a driven gear (17) and is mounted at its other end in a ball-and-socket joint (25). <IMAGE>