| 摘要 |
PROBLEM TO BE SOLVED: To provide a crushing apparatus capable of solving problems of a conventional crushing apparatus wherein an operation for extracting the remaining piles is required after foundation piles are crushed, and cost is increased and a construction period is increased. SOLUTION: This crushing apparatus 1 includes a casing 2 which includes a crushing bit at the front end and a spiral blade for discharge on the inner peripheral wall surface of a tube body, a center shaft 3 which is stored in the casing, includes a crushing bit at the front end, includes a spiral blade on the shaft peripheral wall surface, and is rotated coaxially with the casing, and a support casing 4 rotatably supporting the center shaft and the casing thereabove. A rotating and driving device 5 for rotating the casing and the center shaft reverse to each other is provided to the support casing. COPYRIGHT: (C)2010,JPO&INPIT
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