| 摘要 |
PURPOSE:To easily perform replacement of a suction pipe by providing a connection part for freely detachably connecting the suction pipe in an external cylinder. CONSTITUTION:A scavenger of a duct is traveled through the inside of the duct 10 and sucks sludge or the like in the inside thereof. The scavenger is equipped with a suction pipe 14 connected to a suction hose 15, an external cylinder 16 fitted over the outside of the suction pipe 14 in the nearly whole length thereof, a suction nozzle 17 provided in the tip of the external cylinder 16, wheels 26a, 26b provided to the external cylinder 16, parallel links 23, 24 and cylinders 35a, 35b, 37. The rear-end flange part 16a of the external, cylinder 16 is bolted to the suction pipe 14 and the fitting 15a of the suction hose 15 with a bolt 5. Therefore the suction pipe 14 is easily replaced by loosening and detaching the bolt 5 and releasing connection of the suction pipe 14, the external cylinder 16 and the suction hose 15. |
