To introduce a device main body into an intended branch pipe by providing a device main body which includes traveling, watching and work means and is capable of freely moving in a branch pipe and a transport body which includes a traveling means, stores the device main body in the interior thereof, and is capable of freely moving in a main pipe in a piping comprising a main pipe and a branch pipe.
A device main body 2 is stored on a transport body 6, and in such a condition, the transport body 6 inserted together with the device main body into a main pipe 10. A creeping mechanism is driven by controlling an air cylinder of traveling means 7 in front of and in rear of the transport body 6 from the outside of the piping, and the transport body 6 is moved in the main pipe 10. Subsequently, an intended branch pipe 12 is confirmed by a camera 4 provided on the device main body 2, and the creeping mechanism is stopped to fix the transport body 6 in the main pipe at the branch pipe opening part. After that, a cord 81 is delivered by a winch loaded on the transport body 6 to separate the device main body 2, and when a crawler 3 is driven, the device main body freely travels in the branch pipe 12 to conduct work. Thus, the device can conduct work while freely moving in an intended branch pipe.
HAYATA TAKASHI
KAJIYAMA SHIGERU
TAKAHASHI FUMINOBU
