The invention relates to a lifting jack. The lifting jack comprises a substrate, wherein a lifting threaded rod is arranged in the substrate. The lifting jack is characterized in that a first accommodating groove is formed in the substrate; the lifting threaded rod comprises a first threaded rod and a second threaded rod; the first threaded rod is arranged in the first accommodating groove, a second accommodating groove is formed in the first threaded rod along the axis direction of the first threaded rod, and an internal thread matched with the second threaded rod is arranged at the upper part of the second accommodating groove; the second threaded rod is accommodated in the second accommodating groove; a first limiting piece for limiting the lift stroke of the first threaded rod is arranged between the first threaded rod and the substrate, and a second limiting piece for limiting the lifting formation of the second threaded rod is arranged between the second threaded rod and the first threaded rod; the output end of a driving device is in threaded connection with the first threaded rod, and the output end of the driving device is arranged in the substrate in a rotating mode; the tops of the first threaded rod and the second threaded rod are connected with a supporting seat for supporting and lifting objects in a driving mode. According to the lifting jack, the lifting formation of the lifting jack can be doubled under the precondition of unchanging the original dimensions and weight.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Lifting jack


    Beteiligte:
    XU XUEFENG (Autor:in) / LU TAO (Autor:in)

    Erscheinungsdatum :

    03.06.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



    LIFTING JACK

    MARTINEZ MARTINEZ ANTONIO | Europäisches Patentamt | 2018

    Freier Zugriff

    LIFTING JACK

    FARQUHARSON PHILLIP | Europäisches Patentamt | 2019

    Freier Zugriff

    Lifting jack

    NIE SONG / SUN LIZHI / ZHOU DAYONG et al. | Europäisches Patentamt | 2020

    Freier Zugriff

    LIFTING JACK

    FARQUHARSON PHILLIP | Europäisches Patentamt | 2019

    Freier Zugriff

    Car lifting jack safety control device and car lifting jack

    CHENG YUANXIONG / LI SHA / CHENG LIBO | Europäisches Patentamt | 2021

    Freier Zugriff