| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for efficiently removing a lining material such as asbestos or the like from an existing chimney, and to provide a method using it. SOLUTION: As a rotary head 12, a preliminary head for removing the surface layer 2A of the lining material with bits attached so as to be storable inside the lining material 2 to be removed and a finishing head 12B attached with the bits 30 to further remove a lower layer 2B of the lining material after the removal of the surface layer are used. The finishing head is provided with a wire brush 40 for polishing the inner face of the chimney 1 after the removal of the lining material while the preliminary head and the finishing head can be selectively attached to the drive motor 13. After the removal of the surface layer 2A of the lining material in the preliminary work in the first place, the lower layer 2B of the lining material is further removed in the finishing work while the inner surface of the chimney is polished with the wire brush 40. COPYRIGHT: (C)2010,JPO&INPIT |
