| 摘要 |
PROBLEM TO BE SOLVED: To provide a work system in which a hydraulic hose connected to the work system by a crane does not scatter around on the ground surface in a freely rising and falling manner. SOLUTION: An auger device 5 freely rising and failing by a crane 6 is connected to an oil supply equipment 70 through a hydraulic hose 7. And the auger device 5 is arranged in a freely rising and falling manner above the auger device 5 and the oil supply equipment 70 and a hose sheave 8 for hanging the hydraulic hose 7 is provided. This hydraulic hose 7 comes from the hydraulic sheave 8 above the oil supply equipment 70 and hung to the hose sheave 8 so as to come to the auger device 5 underneath the hose sheave 8. And at the time of rise and fall of the auger device 5, the hose sheave 8 is moved up and down in such a manner that the sum of the distance from the oil supply equipment 70 to the hose sheave 8 and the distance from hose sheave 8 to the auger device 5 becomes almost constant.
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