| 摘要 |
<p>PROBLEM TO BE SOLVED: To collect structures constituting an excavator to be reutilized in a tunnel excavator and a collection method of the tunnel excavator. SOLUTION: A cutter head 20 is constituted of a cutter head center part 23 and a cutter head outer peripheral part 24. A drive part body 14 equipped with a rotary ring 17, a ring gear 18, a drive motor 21 and the like is detachably mounted on an excavator body 11. The cutter head center part 23 is detachably mounted on the rotary ring 17, and the cutter head outer peripheral part 24 is detachably mounted on the cutter head center part 23.</p> |
