| 摘要 |
<p>PURPOSE:To provide stable traveling in pipings of different borest and in curved pipings. CONSTITUTION:A link device 3 is formed with arms 31a, 31b having drive wheels 7a, 7b and actuating arms 32a, 32b having driven wheels 8a, 8b and a pressurizing part 33 turnably supporting end parts of the actuating arms 32a, 32b and positions of the drive wheels 7a, 7b and the driven wheels 8a, 8b are made variable according to inner diameter of pipes and uneven inside of the pipes. End parts of the actuating arms 32a, 32b are held by the actuating arm supporting part 36 of the pressurizing part 33 having a compression spring 37 and an electric cylinder 34 and the position of the driving wheels and the driven wheels can be varied optionally by elongating/contracting the link device 3 according to the inner diameter of the pipe and also depression force is given to the driving wheels and the driven wheels.</p> |
