A hydraulic jack is disclosed. According to an embodiment of the present invention, the hydraulic jack comprises: a jack body; and a rod provided to be moved in the jack body, and moved by oil supplied between the jack body and the rod from an oil supply source. In the rod, a cross section reduction unit can be formed for oil existing between the jack body and the rod to be discharged to the outside when hydraulic pressure higher than predetermined pressure is applied.

    유압잭을 개시한다. 본 발명의 일실시예에 따른 유압잭은 잭몸체; 및 상기 잭몸체에 이동가능하게 구비되고 오일공급원으로부터 상기 잭몸체와의 사이에 공급된 오일에 의해서 이동되는 로드; 를 포함하며, 상기 로드에는 소정 압력 이상의 유압 작용시 상기 잭몸체와 로드 사이에 존재하는 오일이 외부로 배출되도록 하는 단면감소부가 형성될 수 있다.


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    Title :

    HYDRAULIC JACK


    Additional title:

    유압잭


    Contributors:

    Publication date :

    2016-08-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    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



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