| 发明名称 |
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| 摘要 |
PURPOSE:To simplify the internal structure of a disc-shaped cutter of a tunnel excavating machine and reduce the costs its fabrication thereof. CONSTITUTION:A disc-shaped cutter 5 is rotated right (or left) while swing cutters 12 are protruded from the periphery of the cutter 5, and the unexcavated portion generated partially is outbroken. Therein the swing cutters 12 make excavation with a cutter bit 13 in B-part. Also the swing cutters 12 make excavation with cutter bit 13 in A-part, and two expansion jacks 8 both push inward in the radial direction, so that a force of contracting direction is generated in each expansion jack 8. |
| 申请公布号 |
JP2952113(B2) |
申请公布日期 |
1999.09.20 |
| 申请号 |
JP19920206723 |
申请日期 |
1992.08.03 |
| 申请人 |
KENSETSUSHO DOBOKU KENKYU SHOCHO;OOBAYASHIGUMI KK;SHINNIPPON SEITETSU KK;TOKYU KENSETSU KK;SENTAN KENSETSU GIJUTSU SENTAA;KONOIKEGUMI KK;TAKENAKA DOBOKU KK;TAISEI KENSETSU KK;MITSUBISHI JUKOGYO KK |
发明人 |
IGUMA AKIRA;ISHIMURA TOSHIAKI;SAKATA YUTAKA;MYA KYOSHI;NAKAJIMA YUTAKA;NAKAMURA MINORU;INO TOSHIMI;FUJII YOSHIBUMI;SATO YASUO;MATSUMOTO TAKAO |
| 分类号 |
E21D9/087;E21D9/08;(IPC1-7):E21D9/08 |
主分类号 |
E21D9/087 |
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