| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a small-sized cable drum driving apparatus at low cost with small labor load on a worker at drawing a cable by driving a cable drum in a rotating state for a given time only at starting time of drawing the cable from the drum. SOLUTION: An arm 23 is mounted on a first plate 20 mounted on a jack in a way that the arm 23 is turned around an arm fitting shaft 24 according to a loosed state of a cable, and first and second switches 18 and 19 are each closed by a switch operating member 34 at turning positions of the arm 23 according to the lowest position and the middle position of the cable. After an on-signal for the first switch 18 is entered in a control circuit in a control box 29, the start of the cable drawing is judged by the control circuit when a first on-signal for the second switch 19 is inputted. Then, an assist motor 22 is driven for a given time to drive the cable drum in a rotated state.</p> |
