| 摘要 |
In one preferred form of the present invention, there is provided a rock breaker 10. The rock breaker 10 includes a body 12 having a recess 14 for receiving an impactor 16 that is adapted to rotate about an axis 18 extending longitudinally into the recess 5 14. The recess 14 includes a curved wall 20 extending along the recess 14. The curved wall 20 has a number of narrow elongate slit-type openings 22 each extending around the recess 14 across the curved wall 20. The slit-type openings 22 are spaced apart in a direction along the body 12 to form a series 68. The impactor 16 includes two impactor bars 28 that are each positioned in an offset position for rotating in a 10 direction along the slit type openings 22, in a direction around the recess 14, with each impactor bar 28 extending across the slit type openings 22 in an adjacent manner. g.1b - 6 |
