| 摘要 |
PURPOSE:To facilitate polishing for a wall surface by providing two pairs of absorbing panels equiped with a plurality of absorbing panels and alternately operating each absorbing panel pair and allowing a polishing-material projecting apparatus to gradually advance by itself along the wall surface. CONSTITUTION:In polishing, each inside of the adsorbing panels 26, 27, 33, 34, and 48-51 attached onto a wall surface is suction-decompressed through opening and closing valves 60 and 61 and flexible hoses 52-59, and these adsorbing panels are adsorbed onto the wall surface, and an apparatus body is fixed onto the wall surface. An opening and closing mechanism is opened in the state where an impeller is revolved by a motor 11, and the polishing material in a storage tank 1 is fed into the impeller. Then, said polishing material is projected at a high speed and collided with the wall surface, and the polishing material after projection is suction-recovered into the storage tank 1 through an introducing cylinder. The above-described projecting apparatus 14 is gradually advanced by the combination of the alternate absorption operation of the pair of absorbing panels 26, 27, 33, and 34 and the absorbing panels 48-51, and the extension and contraction operation of the cylinders 15, 16, and 35, 36. |
