| 摘要 |
PROBLEM TO BE SOLVED: To provide a working device for tunnel construction equipped with required equipment and materials and capable of performing concrete spraying work. SOLUTION: A robot boom 5 comprises a base part; an extensible first boom turning and derricking relative to the base part; an extensible second boom provided extending straight at the tip of the first boom and turning and derricking relative to the first boom; and a tip section provided at the tip of the second boom. The base part is fixed to the front end of a stage 3 and provided frontward from the front end of the stage 3. An electric compressor, an accelerating agent feeder, an accelerating agent replenishing device, and the like can be mounted on the stage 3. COPYRIGHT: (C)2007,JPO&INPIT
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