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.


    Access

    Download


    Export, share and cite



    Title :

    Telescopic cylinder, landing leg control system and crane


    Contributors:

    Publication date :

    2015-05-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



    Crane slender telescopic cylinder

    WANG LIPING / QIU YONGNING / HAN YUEHUAN | European Patent Office | 2016

    Free access

    Crane single-cylinder bolt telescopic system and crane

    CUI XIANGPO / GAO DEHUA / TONG MENG et al. | European Patent Office | 2023

    Free access

    PISTON ROD OF TELESCOPIC OIL CYLINDER, TELESCOPIC OIL CYLINDER, AND CRANE

    LIU ZHIYONG / MAO CAIYI / NIE XIAOQING | European Patent Office | 2022

    Free access

    Coreless tube telescopic oil cylinder control system and crane

    CHEN XI / CAO GUANGZHI / ZHANG QINGMENG et al. | European Patent Office | 2025

    Free access

    Novel telescopic cylinder arm pin control system and crane

    CAO LIFENG / JIAO GUOWANG / LIANG YAN et al. | European Patent Office | 2023

    Free access