An expansion/contraction mechanism includes a telescopic cylinder, boom fixing means, cylinder-boom connecting means, and a hydraulic-pressure supply unit, and telescopes a plurality of booms except a base boom stage by stage by telescoping the telescopic cylinder. The hydraulic-pressure supply unit includes a pneumatic-pressure source, a selector valve which selects a destination of air provided from the pneumatic-pressure source, a first pneumatic path through which first air sent from the selector valve circulates, a second pneumatic path through which second air sent from the selector valve circulates, a first pneumatic-to-hydraulic conversion unit which converts a pneumatic pressure provided by the first air to a hydraulic pressure and supplies the hydraulic pressure to a first hydraulic cylinder, and a second pneumatic-to-hydraulic conversion unit which converts a pneumatic pressure provided by the second air to a hydraulic pressure and supplies the hydraulic pressure to a second hydraulic cylinder. The pneumatic-pressure source and the selector valve are placed on a fixing-unit side of the telescopic cylinder, and the first and second pneumatic-to-hydraulic conversion units are placed on a movable-portion side of the telescopic cylinder.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    EXPANSION/CONTRACTION MECHANISM


    Weitere Titelangaben:

    EXPANSIONS-/KONTRAKTIONSMECHANISMUS
    MÉCANISME D'EXTENSION/CONTRACTION


    Beteiligte:
    KAWABUCHI NAOTO (Autor:in) / KAWANO TAKASHI (Autor:in)

    Erscheinungsdatum :

    2023-09-27


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B66C Krane , CRANES / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



    EXPANSION/CONTRACTION MECHANISM

    KAWABUCHI NAOTO / KAWANO TAKASHI | Europäisches Patentamt | 2019

    Freier Zugriff

    EXPANSION/CONTRACTION MECHANISM

    KAWABUCHI NAOTO / KAWANO TAKASHI | Europäisches Patentamt | 2017

    Freier Zugriff

    Expansion/contraction mechanism

    KAWABUCHI NAOTO / KAWANO TAKASHI | Europäisches Patentamt | 2020

    Freier Zugriff

    WORK FLOOR EXPANSION/CONTRACTION MECHANISM

    ONISHI SHO / MITSUI HIROSHI | Europäisches Patentamt | 2022

    Freier Zugriff

    EXPANSION AND CONTRACTION MECHANISM OF WORK FLOOR

    ONISHI SHO / MITSUI HIROSHI | Europäisches Patentamt | 2022

    Freier Zugriff