| 摘要 |
PROBLEM TO BE SOLVED: To provide an information transmission device of a non-open-cut drilling machine, which device can be incorporated inside a small-diameter excavation head and transmits various information efficiently from the excavation head to a body side.SOLUTION: An information transmission device is disposed in an excavation head 3 provided at a tip of a drilling rod 2 of a non-open-cut drilling machine. The information transmission device comprises: a battery disposed behind an excavation tool in a tip of the excavation head; a drive circuit disposed behind the battery; a super-magnetostrictive element 35 disposed behind the drive circuit; an element case 36 for supporting the super-magnetostrictive element; and a vibration transmission part 37 disposed behind the super-magnetostrictive element and for transmitting vibration from the super-magnetostrictive element to the drilling rod. The battery, the drive circuit, the super-magnetostrictive element, and the vibration transmission part are substantially linearly arranged along an axial direction of the excavation head. The vibration transmission part is movably disposed to the element case in the axial direction of the excavation head. |
