| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2019: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2018: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Outline of Final Research Achievements |
We investigated various rigging methods of light cable system in Japan as well as overseas countries and classified them including normal cable systems. Especially as of a light cable system with single drum, we defined three types of rigging methods based on a configuration of a main line that also works as a lifting line, developing a mechanics model in order to confirm advantage of a moving-block configuration by comparing stability of carriage among the three types. Then we carried out a series of field tests in Shimane and Kochi using swing yarders with a double lifting line configuration of light cable system. The tests verified the relationship between carriage movement and skyline tension as well as the response of skyline and main line tensions correspond to hooking position of the carriage, both estimated from the mechanical model.
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