The present invention provides a telescopic device with single cylinder and multiple section arms, a crane arm and a crane, which relate to the mechanical engineering technical field. The telescopic device with single cylinder and multiple section arms comprises: a third extension rope, a third retraction rope, a telescopic cylinder, a first section arm, as well as a second section arm and a third section arm which are nested in sequence within the first section arm, the telescopic mechanism has a fixed end connected with the first section arm and a movable end provided with a first turning structure, the second section arm is connected with the movable end of the telescopic mechanism and is further provided with a second turning structure, the third extension rope has one end connected with the first section arm and the other end connected with the third section arm after passing around a top portion of the first turning structure, the third retraction rope has one end connected with the first section arm and the other end connected with the third section arm after passing around a bottom portion of the second turning structure, achieving synchronous retraction of the multiple section arms and the single cylinder, with the same relative retraction amount for adjacent two section arms, improving the operation efficiency.


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    Title :

    SINGLE-CYLINDER MULTI-SECTION BOOM TELESCOPIC MECHANISM, BOOM AND CRANE


    Additional title:

    TELESKOPMECHANISMUS FÜR EINEN EINZYLINDER-AUSLEGER, AUSLEGER UND KRAN MIT MEHREREN ABSCHNITTEN
    MÉCANISME TÉLESCOPIQUE DE FLÈCHE À SECTIONS MULTIPLES MONOCYLINDRIQUE, FLÈCHE ET GRUE


    Contributors:
    LI PENG JU (author) / ZHOU BIN (author) / HU DINGFENG (author)

    Publication date :

    2024-03-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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