To provide a damper for a railway vehicle which can effectively prevent derailment at the time of an earthquake, and does not damage a vibration damping effect of a vehicle body at normal time, and a vibration damping device for the railway vehicle.SOLUTION: A damper PD for a railway vehicle comprises: an expansion body 1 comprising a cylinder 2, a rod 4 inserted in the cylinder 2, and a piston 3 which is slidably inserted in the cylinder 2 and is connected to the rod 4, thereby partitioning the interior of the cylinder 2 into a rod side chamber 5 and a piston side chamber 6; and a damping part V which exhibits damping force when the expansion body 1 is telescopically moved. The damping part exhibits the damping force which is equal to a damping force required for prevention of derailment of the railway vehicle or more when an expansion/contraction rate is a first speed v1 or higher, and exhibits damping force of 10kN or less when the expansion/contraction rate is less than a second speed v2 lower than the first speed v1.SELECTED DRAWING: Figure 2
【課題】地震時には脱輪を効果的に防止できるとともに平常時には車体の制振効果を損なわない鉄道車両用ダンパおよび鉄道車両用制振装置の提供である。【解決手段】本発明の鉄道車両用ダンパPDは、シリンダ2とシリンダ2内に挿入されるロッド4とシリンダ2内に摺動自在に挿入されるとともにロッド4に連結されてシリンダ2内をロッド側室5とピストン側室6とに区画するピストン3とを備えた伸縮体1と、伸縮体1が伸縮する際に減衰力を発揮させる減衰部Vとを備え、伸縮速度が第一速度v1以上となると鉄道車両の脱輪の防止に要求される減衰力以上の減衰力を発揮し、伸縮速度が第一速度v1よりも低い第二速度v2未満では10kN以下の減衰力を発揮する。【選択図】図2
DAMPER FOR RAILWAY VEHICLE AND VIBRATION DAMPING DEVICE FOR RAILWAY VEHICLE
鉄道車両用ダンパおよび鉄道車両用制振装置
2019-03-22
Patent
Elektronische Ressource
Japanisch
IPC: | B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES |
RAILWAY VEHICLE DAMPER AND RAILWAY VEHICLE VIBRATION CONTROL DEVICE
Europäisches Patentamt | 2019
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