| 摘要 |
PURPOSE: A drainpipe and soil box dredging machine for bridge with improved suction force is provided to improve the quality of a dredging task because sludge in an edge of a drainpipe and a soil box is dredged by selectively mounting a vacuum suction tool for corner areas in a sludge suction pipe. CONSTITUTION: A drainpipe and soil box dredging machine for bridge comprises a sludge suction pipe(40), a vacuum suction tool for corner areas(60), and a vacuum degree regulating pipe(70). The vacuum suction tool for corner areas is mounted in the lower part of the sludge suction pipe and comprises an upper connecting pipe, a suction mouth, and a plurality of external air intake ports. A threaded portion is formed in the outer circumference of the upper connecting pipe and thread-coupled with the sludge suction pipe. The suction mouth is formed into a square shape, thereby being closely adhered to an edge portion of a drainpipe and a soil box. The vacuum degree regulating pipe regulates an intake amount of external air and an operator manually controls a vacuum degree with the vacuum degree regulating pipe.
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