| 摘要 |
PROBLEM TO BE SOLVED: To sample an excellent large soil core, by minimizing run-out when rotating a drill blade, without selecting a kind of tractor to be connected. SOLUTION: This large undisturbed soil core sampling device is composed of a vertically movable lift part 3 having specifications connected to a tractor rear part and used when installing a sample tube 36, a frame 7 having a pair of guide frames 9 and 9 in the lift part 3 vertically moving by PTO motive power, a vertically movable part 11 having a hydraulic cylinder 12, and a rotational motive power part 20 connected to the vertically movable part 11 by doubly suspending the sample tube 36 inside and the drill blade 40 outside. The lift part 3 uses PTO of the tractor as a motive power source, and the hydraulic cylinder 12 of the vertically movable part and a hydraulic motor 29 of the rotational motive power part use a hydraulic system 5 of the tractor as a motive power source. The sample tube 36 is suspended inside a lower part, and the soil core is stored in the sample tube 36 by pushing down while rotating the drill blade 40 suspended outside the lower part. COPYRIGHT: (C)2006,JPO&NCIPI
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