PROBLEM TO BE SOLVED: To provide a stanchion pole capable of suppressing effectively the vibration of a roof strength member and a floor strength member of a railroad car.
SOLUTION: The stanchion pole having a rod member and a hydraulic draft gear installed at one end or in the middle of the rod member is interposed between the roof strength member and the floor strength member of the railroad car, in which the rigidity k1 of the working fluid of the hydraulic draft gear D and the rigidity k2 of the rod member 1 are set so as to meet the equivalent damping coefficient Ceq of the whole stanchion pole required to the vibrating frequency f in the relative vibration of the roof strength member L with the floor strength member F. Further the series rigidity k of the rigidity k1 of the working fluid and the rigidity k2 of the rod member 1 is made greater so as to reduce a drop of Ceq with respect to the damping coefficient C.
- 公益財団法人鉄道総合技術研究所 情報管理部 知的財産担当
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