ボギー角連動操舵台車へのアシスト操舵技術の適用

摘要

鉄道車両の曲線通過速度向上のためには，速度向上に伴って増加する横圧に配慮する必要がある。横圧の発生は車輪，レール摩耗を増進させ，著大な横圧の発生は脱線の危険性を増加させる。横圧を低減させる方策として，曲線走行中に輪軸の向きを変えて発生横圧を抑制する操舵台車があり，これまでに様々な形式の操舵台車が研究・開発されてきた。台車一車体間の旋回動作に応%The authors have developed an assist steering bogie system using hydraulic actuators to improve curving performance on narrow gauge line railway vehicles. This system is applicable to ordinary bogie angle linked steering systems. Some numerical simulations are carried out to check the reduction effect of the lateral wheel load, furthermore a running test using an actual vehicle is conducted. These examination results have shown the assist steering bogie system is capable of reducing the lateral wheel load at transition curve sections. Although further studies concerning fail-safe functions are needed to apply these steering bogie systems into practical use, a considerable potential of the system can be confirmed.