| 摘要 |
PROBLEM TO BE SOLVED: To provide a crusher capable of crushing by sandwiching force and breaking by impact force, in the crusher crushing a wall body part of a concrete structure such as a chimney in a state of being suspended by crane. SOLUTION: This crusher has a pair of gripping-holding arms 3 and 4 suspended by the crane and crushing by interposingly pressing the wall body part A of the concrete structure, and an impact means 5 installed in a lower end part of at least one gripping-holding arm 4 so as to freely advance and retreat in the longitudinal direction, and is constituted so as to crush the wall body part A by its impact force by advancing an impact rod 5a of the impact means 5 while pressing to the wall body part A by taking reaction to the wall body part A gripped and held by the gripping-holding arms 3 and 4. COPYRIGHT: (C)2007,JPO&INPIT
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