| 摘要 |
PROBLEM TO BE SOLVED: To provide an excavation agitation device with a co-rotation prevention blade which can suppress an adverse effect even if foreign matters exist.SOLUTION: This excavation agitation device with a co-rotation prevention blade comprises: a rotating shaft 2 which rotates in the ground; an excavation blade 3 which is protrusively arranged at a lower end of the rotating shaft 2, and excavates sediment; and the co-rotation prevent blade 10 which is arranged at an upper part apart from the excavation blade 3 at the rotating shaft 2 by a prescribed distance, and has a boss part 10a which circulates around the rotating shaft 2, and is loosely fit to the rotating shaft 2. The co-rotation prevention blade 10 is formed so that its tip is separated from the excavation blade 3 compared with a base end which approximates the boss part 10a.SELECTED DRAWING: Figure 2 |
