Abstract
Rigid contact wires used in monorail and new transportation systems are disadvantageous in that they are liable to cause interruption of pantograph contact, generate large noise, and shorten the service life of the slider. In an attempt to overcome these problems, a new type pantograph was trially manufactured and subjected to various tests with a newly installed rotary disk type equivalent testing equipment. When the new type pantograph was combined with a slider of graphite-disprsed copper type casting alloys, it was found, noise at a distance of 1 m from the sliding contact surface at 60 km/h was about 17 dB lower than with a conventional pantograph. Also, the factor of contact interruption was substantially reduced and the slider life vastly prolonged.
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