Disclosed are a link type secondary locking device, a hopper car bottom door and a hopper car, relating to the technical field of railway wagons. The link type secondary locking device comprises a transmission shaft, a door opening arm, a first roller, a second roller, a first locating pin, an anti-rotation disc and a link mechanism. The hopper car bottom door comprises the link type secondary locking device. The hopper car comprises the bottom door. Even when the link type secondary locking device is accidentally under a force, the link mechanism cannot rotate and then a driven arm likewise cannot rotate. The hopper car bottom door can avoid accidental opening of the hopper car bottom door. The hopper car is more reliable in use.


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    Title :

    Link type secondary locking device, hopper car bottom door and hopper car


    Contributors:
    SHI CHUNJIANG (author) / SUN MINGDAO (author) / JIANG QIANGJUN (author) / LIU FENGWEI (author) / WANG BAOLEI (author) / LIU WENLIANG (author) / TANG CHUQIANG (author) / JIANG RUIJIN (author) / LIN LIANGCAI (author) / FU TIEJUN (author)

    Publication date :

    2016-12-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES



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