| 摘要 |
PROBLEM TO BE SOLVED: To provide a bucket device that can be attached to a kelly-bar and does not require a driving source separately.SOLUTION: An obstacle removing bucket 1 is for removing underground obstacles. It includes: a cylindrical casing part 2; a pair of shell parts 3A, 3B which is disposed inside the casing part and in which an end of a pin 31 serving as a fulcrum for opening and closing is supported by the casing part; a connection part 4 connected to a lower end of a kelly-bar 11; a guide part 5 which is fixed to the casing part above the shell parts and accommodates the connection part so as to be movable in the vertical direction; arm parts 6A, 6B which make the connection part and the shell parts connected so that the shell parts are opened when the connection part is below the guide part and that the shell parts are closed when the connection part is above the guide part; and a lock part 43 which is provided at the lower portion of the connection part switchable between projection to the side of the guide part and accommodation depending on the rotation direction of the connection part. |
