| 摘要 |
PURPOSE:To reduce cost required for amploying a device by making the device simple and compact as for the inside cleaning device by which foreign matters remaining in the inside of a steel tube such as a remaining slag of welding is removed. CONSTITUTION:A truck 4 provided with a scraper 11 at its tip end and an operating belt 5 by which the truck is pushed and pulled are carried into a located cylindrical body P so as the foreign matter in the body P to be scraped off by the scraper 11. The operating belt 5 is a group of traveling bodies 13 and a chain by which the bodies 13 are connected with each other and constituted to be bendable only downward from the traveling plane. A traveling frame 3 for the truck 4 and operating belt 5 is provided on a rack 1. Sprocket wheels 24 and 25 by which the chain is driven are provided in the midst and at the rear end on the frame 3. A driving mechanism 2 by which the sprocket wheels 24 and 25 are driven is provided on the rack 1. The belt 5 in a standby state is stored in a guide frame 6 provided below the traveling frame 3. |
