The invention discloses an oil returning structure. The oil returning structure comprises a base, a control switch, a first blocking bead located in the base, and an elastic element mounted between the first blocking bead and the base, wherein the base is provided with a liquid storage cavity, a liquid returning cavity, a communication cavity, a first communication opening communicated between the liquid returning cavity and the communication cavity, and a second communication opening between the communication cavity and the liquid storage cavity; the control switch is used for controlling the opening and closing of the second communication opening so that the communication cavity and the liquid storage cavity are at a conducted or blocked state; the first blocking bead can move between a blocked position and an opened position; the first communication opening is arranged in an communication opening part of the base; when the first blocking bead is located at the blocked position, the partial region of the first communication opening is blocked to form a liquid passing gap with the inner wall of the communication opening part; the liquid passing gap is communicated with the liquid returning cavity and the communication cavity. By the aid of the oil returning structure, the speed of liquid flowing into the communication cavity from the liquid returning cavity can be changed; the oil returning structure has a simple structure and the manufacturing cost is reduced.


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    Titel :

    Oil returning structure


    Beteiligte:
    CHEN JIANG (Autor:in) / YE JUNXUE (Autor:in) / WANG JINGFANG (Autor:in)

    Erscheinungsdatum :

    2015-06-10


    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 / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein



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