| 摘要 |
<p>PURPOSE:To facilitate laying work of tube passage, and at the same time, increase length of tube passage to be laid in leading-in operation of one time, by mounting tube passage on a truck which prepared wheels, and forming such that this truck is led in a tunnel. CONSTITUTION:A truck body 2 which is led in a tunnel is composed of semicircular wheel frame 5 which has circle part 3 and horizontal part 4 and cover plate 6 which is fixed to this frame, and two wheels 7, 8 are installed in radius direction on the wheel frame 5. Such bodies 2 are connected in plurality number by a beam member 9, and truck row is arranged. Two supportors 12, 13 are provided on the body 2 in movable state vertically, and in order to provide receiving stand 17 which supports tube passage 16 for cable protection on the body 2, small diameter parts 18, 19 are formed on the end of the supportors 12, 13 are formed, and holes which engage with these small diameter parts are drilled on the receiving stand. Pins 22 which are inserted in the holes that are prepared on the suportors 12, 13 are prepared on the end of lever 20, and wire 23 for rotating the lever 20 is connected on another end.</p> |
