| 摘要 |
<p>PURPOSE:To correct and control extension looseness automatically, to stabilize extension velocity and to make it possible to execute operation at a high speed by providing a sensor detecting the looseness of the wire in important spans, and inputting a detected result to a damping controlling system or a take-up controlling system of a stringing winch. CONSTITUTION:A separating detection sensor 2A is placed between diameters having an important transversely moving substance 12, and a detected signal of the sensor 2A is inputted to a lower setting 6 so that a separation L2 can be detected. A lower value is so set to the lower setting 6 that it is allowable for the falling of an electric wire, leaving the control of conductor length looseness to the sensor 2A in case the electric wire 7 during the conductor length does not fall down to the lower value, weighting and inputting the signal to a comparator 4 in case the wire 7 falls up to the lower value, adding it to an amount set by a standard setting 5 outwardly, and wire separations L1 and L2 are extended by increasing the tensile force of the wire 7 for only the portion of addition to prevent the generation of an abnormal condition.</p> |
