发明名称 |
VIBRATION DAMPING DEVICE FOR RAILWAY VEHICLE |
摘要 |
<p>A vibration damping device for railway vehicle includes an actuator and a damper circuit that causes the actuator to function as a damper. The actuator includes a cylinder coupled to a truck of a railway vehicle, a piston, a rod coupled to the piston and a body, a rod-side chamber and a piston-side chamber inside the cylinder, a first on-off valve for a first passage that communicates between a rod-side chamber and a piston-side chamber, a second on-off valve for a second passage that communicates between the piston-side chamber and a tank, and a pump that supplies a hydraulic fluid into the rod-side chamber. The hydraulic fluid has such kinematic viscosity-temperature characteristics that a kinematic viscosity of the hydraulic fluid ranges from 7 mm 2 /s to 50 mm 2 /s in a temperature range of from 20°C to 60°C.</p> |
申请公布号 |
EP2743152(A4) |
申请公布日期 |
2015.05.20 |
申请号 |
EP20120821689 |
申请日期 |
2012.08.06 |
申请人 |
KAYABA INDUSTRY CO., LTD. |
发明人 |
OGAWA, TAKAYUKI;AOKI, JUN;SUZUKI, TSUTOMU;UCHIDA, MASARU;YABUKI, CHIE |
分类号 |
B61F5/24;F15B11/028;F15B21/04;F16F15/02 |
主分类号 |
B61F5/24 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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