FLOW PASSAGE PIPE INSIDE INVESTIGATING DEVICE, METHOD OF INVESTIGATING PIPE INSIDE UTILIZING THE DEVICE, AND METHOD OF COLLECTING UNCOLLECTED OBJECT IN THE METHOD

摘要

PROBLEM TO BE SOLVED: To reduce manufacturing cost by simplifying structure, easily applicable also to the investigation of a flow passage pipe extending over a long distance, to reduce working cost when the inside of the flow passage pipe is investigated, and to easily collect a flow passage pipe inside investigation device left as an uncollected object.;SOLUTION: This flow passage pipe inside investigating device comprises a device body in which the axial one end of a cylindrical wall part is closed by an end wall part and the axial other end is closed by a conical wall part. The device body comprises a horizontal guide plate, a vertical guide plate, a right side-left side guide plate, and a lower side guide plate. A photographing means for photographing the inside of the flow passage pipe to be investigated and an illuminating means for illuminating the inside of the flow passage pipe are disposed in the device body. A storage device for storing the photographed pipe inside images and a battery for supplying a power are disposed in the device body. A balance weight for restraining the floated attitude of the device body relative to a flowing water is so disposed in the device body that the lower portion of the cylindrical wall part than the right side-left side guide plate is positioned under the level of the flowing water inside the flow passage pipe to be investigated.;COPYRIGHT: (C)2009,JPO&INPIT