| 摘要 |
PROBLEM TO BE SOLVED: To provide an agitation device for surface layer ground improvement that has superior agitation operability for excavated earth and sand and a hardener by suitably arranging agitating blades of a bucket, can securely and uniformly agitate and mix the earth and sand and the hardener, and is not apt to cause a situation in which work is interrupted to have improved operation efficiency.SOLUTION: An agitating blade part 12 is arranged on a shaft part 11 provided projecting from an innermost part 52 of a bucket 50 toward a front opening part, and can be driven by a driving part 13 in the shaft part to rotate so as to agitate and mix earth and sand and a hardener entering the bucket 50 in excavating operation by the agitating blade part 12 which rotates. Consequently, the excavated earth and sand entering the bucket 50 come into contact with respective blade bodies 12b in a well-balanced state from the axial direction of the agitating blade part 12, so that no excessive force is applied. Transmission means having small strength is not passed through and a mechanism part associated with the driving of the blade parts is prevented from being broken. The excavating, and mixing/agitating operation are continuously carried out to efficiently carry on surface layer ground improvement in a short period without any break. |
