| 摘要 |
PROBLEM TO BE SOLVED: To provide a blasting machine which moves along two wall faces crossing each other at the predetermined angle while sucked onto both wall faces and projects a grinding/polishing/cleaning member onto the wall faces for blasting. SOLUTION: A substantially sealed space part 20 is formed between a device 10 and wall faces 1, 2 around a part, in which the two wall faces 1, 2 cross each other at the predetermined angle, and a pressure inside the space part 20 is reduced, so that the device 10 main body is sucked onto the wall faces 1, 2. The device 10 is moved along the wall faces 1, 2 while keeping its suction condition by means of drive of wheels held in substantially vertical postures to the corresponding side faces 1, 2. According to a shift of the device 10, blasting is carried out on the wall faces inside the space part 20. A projected grinding/polishing/cleaning member, dirt, dropped by the grinding/polishing/ cleaning member, and the like are easily accumulated in corner parts of both wall faces 1, 2, however, they are blown up in the space part 20 by means of air flowing into the space part 20 during pressure reduction in the space part 20 so as to be easily collected from a pressure reducing passage 12. |
