1993 Fiscal Year Final Research Report Summary
The Three support cable crane for monitoring tropical forest
| Project/Area Number |
03452266
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
林学
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
KANZAKI Kouichi Kyoto Univ., Fac.of Agri., Prof., 農学部, 教授 (20026404)
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| Co-Investigator(Kenkyū-buntansha) |
SUZUKI Yasushi Kyoto Univ., Fac.of Agri., Assistant, 農学部, 助手 (20216451)
SAKAI Tetsurou Kyoto Univ., Fac.of Agri., Associate Prof., 農学部, 助教授 (10101247)
NUMATA Kunihiko Kyoto Univ., Fac.of Agri., Associate Prof., 農学部, 助教授 (30026405)
TAKEUCHI Michiyuki Kyoto Univ., Fac.of Agri., Prof., 農学部, 教授 (40026638)
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| Project Period (FY) |
1991 – 1993
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| Keywords | three support cable crane / monitoring tropical forest / model experiment |
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| Research Abstract |
We picked up and arranged the functions needed on the support cable crane for monitoring tropical forest, and reported the carriage movement method and the analysis methods of carriage dynamic motion at the 104th Meeting of the Japanese Forestry Society in April, 1993.
We produced the model three support cable crane on the reduced scale 1/100, and made two experiments (〕SY.encircled1.〔) verfication of theoretical value at the stable state and (〕SY.encircled2.〔) stability of carriage motion at moving wire ropes.
In the experiment (〕SY.encircled1.〔), we made clear that the error of horizontal position is not so large excluding near sides of triangle and that the error of vertical position is thrice than of horizontal position. This facthinted us as follows : the error of tension is in square proportion of theoretical tension value, then we can not ignore the effect on the stretch of wire rope. We explained the fact in Principle of conservation of energy : th total of train energy to stretch of wire rope and potential energy to displacement of carriage position is constant. In the experiment (〕SY.encircled2.〔), starting the input motion fromK the low tension wire rope, we will be able to expect a moderate motion of carriage movement.
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