To provide a damper for a railroad vehicle capable of improving mountability to a vehicle and reducing manufacturing costs.SOLUTION: A damper 1 for a railroad vehicle includes: a cylinder 2; a piston 3 movably inserted into the cylinder 2 and dividing the inside of the cylinder 2 into an extension-side chamber R1 and a pressure-side chamber R2; a tank 5; a discharge passage 6 communicating the extension-side chamber R1 with the tank 5; a first passage 7 communicating the extension-side chamber R1 with the pressure-side chamber R2; a second passage 8 communicating the pressure-side chamber R2 with the tank 5; a rectification passage 12 permitting only flow of liquid from the pressure-side chamber R2 to the extension-side chamber R1; a suction passage 13 permitting only flow of liquid from the tank 5 to the pressure-side chamber R2; a variable attenuation valve 9 disposed on the discharge passage 6; and a solenoid switch valve V having an extension-side unload position, a pressure-side unload position, and a cutoff position, and switchable to any of the positions.SELECTED DRAWING: Figure 2

    【課題】車両への搭載性を向上できるともに製造コストを低減できる鉄道車両用ダンパの提供である。【解決手段】鉄道車両用ダンパ1は、シリンダ2と、シリンダ2内に移動自在に挿入されるとともにシリンダ2内を伸側室R1と圧側室R2とに区画するピストン3と、タンク5と、伸側室R1をタンク5に連通する排出通路6と、伸側室R1と圧側室R2とを連通する第一通路7と、圧側室R2とタンク5とを連通する第二通路8と、圧側室R2から伸側室R1へ向かう液体の流れのみを許容する整流通路12と、タンク5から圧側室R2へ向かう液体の流れのみを許容する吸込通路13と、排出通路6に設けた可変減衰弁9と、伸側アンロードポジションと圧側アンロードポジションと遮断ポジションとを有していずれかのポジションに切換え可能な電磁切換弁Vとを備えている。【選択図】図2


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    Title :

    DAMPER FOR RAILROAD VEHICLE


    Additional title:

    鉄道車両用ダンパ


    Contributors:

    Publication date :

    2019-10-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16F SPRINGS , Federn / B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES



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