| 摘要 |
PROBLEM TO BE SOLVED: To provide a wear detector of a trolley cable which is applicable to an existing trolley cable irrespective of the service voltage, and capable of constantly performing the monitoring, correctly detecting the wear limit of the trolley cable and enhancing the reliability. SOLUTION: A solar array panel 17 is connected to a wear detection unit 3 provided on a trolley cable 1, a charging battery 18 is provided thereon, and a pair of conductors 5, 6 (short-circuit contacts) are provided on the wear limit level 2 of the trolley cable 1 of the wear detection unit 3. When the trolley cable 1 is worn to the wear limit level 2, the conductors 5, 6 are short-circuited by a pantograph to output the wear detection signal from the wear detection unit 3. The wear detection signal is converted into the light signal by a light signal transmission unit 11, the light signal is received by a reception unit 21 via an optical cable 14 and converted into the electric signal, and notified to a predetermined part via a radio communication unit 22. COPYRIGHT: (C)2006,JPO&NCIPI
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