发明名称 STRUCTURE OF CUTTER PLATE IN A SHIELDED EXCAVATOR
摘要 PURPOSE:To facilitate the replacement of cutter blades by arranging a cutter blade mounting arm member so that it can extend and retract back and forth from and into a sediment intake slit in a cutter plate, and by arranging a shutter plate which closes the slit when the butter blade mounting arm member retracts. CONSTITUTION:A cutter blade mounting arm member 10 projected from a shaft cylinder 9 is rotated integrally with a cutter plate 3 by a motor 19 through the intermediary of a transmission shaft 8 for excavation. When a cutter blade 11 is worn, the arm member 10 is retracted to the rear side of the cutter plate 3 through a sediment intake slit 7, and simultaneously, the slit 7 is closed by a shutter plate 3 in order to receive the ground at the face of the excavator by the entire surface of the cutter blade 3. Further, the worn cutter blade 11 mounted on the arm member 10 is replaced with a new one, and then the shutter plate 16 is opened so that the arm member 10 is extended through the opened slit 7 in order to excavate the ground again. With this arrangement, it is possible to enhance the excavating efficiency.
申请公布号 JPH0411195(A) 申请公布日期 1992.01.16
申请号 JP19900112062 申请日期 1990.04.28
申请人 OKUMURA KIKAI SEISAKU KK 发明人 ASAHI TOSHINORI;SATO HIROMI
分类号 E21D9/087;E21D9/08 主分类号 E21D9/087
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