| 摘要 |
The objective of the present invention is to provide an apparatus that moves through the interior of a pipe, said apparatus being of extremely simple construction, easy to make dustproof and waterproof, and capable of passing through the pipe regardless of the direction of curvature and without being controlled for orientation, the apparatus also having the characteristic of allowing the direction of advance in a T-shaped branch pipe to be selected. The present invention is provided with at least three sets of wheel units (2A-2C) disposed longitudinally in the rotation direction, and at least two sets of joint parts (3A, 3B) turnably linking the at least three sets of wheel units, each of the at least three sets of wheel units having a wheel (7), a drive unit (10) for rotatably driving the wheel (7), a first frame (26) secured to the drive unit (10), and at least one second frame (25) rotatably attached to the drive unit (10), a bend-generating device (4) for applying tension to bend the first frame and the second frame into a V-shape being provided between the first frame (26) and the second frame (25) of the at least three sets of wheel units (2A-2C), and the two sets of joint parts being turnably configured in a direction substantially intersecting the turning direction of the second frame. |
