| 摘要 |
PROBLEM TO BE SOLVED: To provide a multiple-spindle excavator capable of improving work efficiency, by preventing dislocation of the excavation direction, by preventing twisting of the whole multiple spindle by rotation, when excavating by the multiple-spindle excavator. SOLUTION: This multiple-spindle excavator has a run-out preventive device, by downward connecting a plurality of excavation shafts 5 of mutually binding the middle by a binding band 9 to a driving mechanism. A planar substantially oval-shaped divided bodies 10a and 10b slidingly contacting with a wall surface of an excavation hole, are respectively installed on both ends of the binding band 9 as a member 10 for preventing twisting of the plurality of whole excavation shafts 5 by the rotation. COPYRIGHT: (C)2006,JPO&NCIPI
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