| 摘要 |
PCT No. PCT/JP90/01199 Sec. 371 Date Mar. 17, 1992 Sec. 102(e) Date Mar. 17, 1992 PCT Filed Sep. 19, 1990 PCT Pub. No. WO91/04393 PCT Pub. Date Apr. 4, 1991.A device for fixing a disk cutter to the cutter head of a shield excavator, wherein a plurality of cylindrical cases (2) are provided on the face plate (1a) of the cutter head (1) rotatably disposed on the front part of the shield proper, bosses (3) are disposed to project face-to-face in each of said cases (2), U-shaped grooves (4a) of retainers (4) provided on both ends of a shaft (7) rotatably supporting the cutter proper (5) are fitted on the bosses (3) so that the cutter proper (5) is turned around the shaft (7) together with the retainer (4); a key block (10) is fixed to the open side of the U-shaped groove (4a) formed on said retainer (4); and the proper (5) is fixed to the case (2) with the boss (3) clamped by the key block (10) and the retainer (4). In this way, the cutter proper can be fixed to the case without forming insertion grooves therein.
|
