The invention provides a telescopic cylinder, a landing leg control system and a crane. The telescopic cylinder includes a main barrel body having an inner cavity passing to an axial second end of the main barrel body from an axial first end of the main barrel body; a first piston assembly movably arranged in the inner cavity along the axial direction of the main barrel body and having a first extending-out end extending out from the axial first end of the main barrel body; and a second piston assembly movably arranged in the inner cavity along the axial direction of the main barrel body and having a second extending-out end extending out from the axial second end of the main barrel body. The inner cavity is divided into a first chamber body, a middle chamber body and a second chamber body by the first piston assembly and the second piston assembly along the axial first end to the axial second end; the main barrel body is provided with a first fluid through port communicated with the middle chamber body, the first extending-out end is provided with a second fluid through port having a communication state with the first chamber body, the second extending-out end is provided with a third fluid through port having a communication state with the second chamber body. The telescopic cylinder solves the problem of relatively complex telescopic structure.


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    Titel :

    Telescopic cylinder, landing leg control system and crane


    Beteiligte:
    JIANG HAOZHONG (Autor:in)

    Erscheinungsdatum :

    06.05.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B66C Krane , CRANES



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