| 摘要 |
The impact device comprises an impact piston (11) and carrier (9) which moves relative to a body (10). The two members are adapted to provide a suitable impact force to a tool (1) by movement of a rod (12) between the two. The force is activated by a pressure fluid valve (13) which has a body (3) that opens or closes respectively. The body is connected to a U-shape to a protective yoke (16), which has two mutually spaced legs extending along the tool and base (18). The tool tapers in a plane perpendicular to the plane of the U. |
