| 摘要 |
PROBLEM TO BE SOLVED: To improve a demolishing speed by preventing swing of a load in a crusher demolishing a cylindrical structure. SOLUTION: A crusher 11 crushing a cylindrical structure such as a chimney a, etc., in a condition hung by a lifting means like a crawler crane 12 is provided with a guide arm 13 shown below. That is, the guide arm 13 is supported to be longitudinally rotatable by the crusher 10. Further the crane is provided with rubber wheel 13b3 transferable on the inside face a1 of the chimney a right below the crusher 11 and further, the guide arm 13 is separately constituted of a boom 13a and an arm 13b rotatably supported by the boom 13a. By rotating the arm 13b by a coil spring 13c, the rubber wheel 13b3 can be urged to the inside face a1. COPYRIGHT: (C)2004,JPO
|
