| 摘要 |
<p>PURPOSE:To eliminate noise by disposing a power cable for transmitting power, signals, etc., having one end coupled with the fixed side, in a tubular guide body on the other end side thereof while winding spirally and connecting the other end with revolution side thereby preventing the revolution range from being limited within one revolution. CONSTITUTION:A tubular cage 11 having vertical axis is disposed on the surface of a revolution body 4 in a revolution crane. A feeder cable 8 having one end secured to a gutter member 1 is inserted spirally into the cage 11 from the upper ring body 12 side and coupled, at the other end thereof, with a drive section on the revolution body 4 side while protruding outward from the lower side face of the cage 11, i.e., the surface of a lower ring body 13. Resiliency of the feeder cable 8 itself eliminates trouble even if the revolution body 4 makes two revolutions. This mechanism does not limit the revolution range within single revolution and does not produce any noise as compared with a slip ring.</p> |
