| 摘要 |
A roller cutter assembly for rotary boring of the face of earth formations comprising a boring head (16) and a plurality of roller cutters (14) mounted in mounting members (15). The bearing shafts (25) of the roller cutters (14) are secured to the mounting members (15) by members of clamping bolts (30). For purposes of eliminating the risk for failure of the clamping bolts (30) to occur the mounting members (15) are provided with a cap portion (31). |
