| 摘要 |
<p>PURPOSE:To perform the work for cleaning and passage test in one work stage and to improve workability by running an mobile device in conduit line through a cable tow rope containing feeders. CONSTITUTION:As an arm 14 having a roller 12 for in-conduit line mobile devices 20a, 20b and 20c comes into contact with the upper inner wall of an underground conduit line 8, wheels 11 are pressed to the travelling inner wall to increase frictional force, so that towing force is enhanced to the specified strength. With a control device 5 or a remote controller 6 the current is fed to mobile devices 20a to 20c in conduit line through a drum rotation section 1 and a cable tow rope 2 containing feeders. By the control operation of the control device 3 or the remote controller 4, as the drum rotation section 1 rotates, the mobile devices 20a to 20c travel along inside the underground conduit line 8. The pulling-in of the cable tow rope 2 into the underground conduit 8, the cleaning and the passage test inside the underground pipe 8 are performed simultaneously. Consequently, as the repetition work depending on human power is automatically performed in one work stage, the workability is improved.</p> |
