According to the present invention, a load support device for railroad construction includes a hydraulic jack comprising an input cylinder part and an output cylinder part. The hydraulic jack includes: first and second pumping devices having different sizes to be combined with the input cylinder part; a rail support member combined with the upper part of a piston head part of the output cylinder part; a first fixing step formed in the lower part of the outer surface of the piston head part; and a cylindrical body surrounding the outer part of the output cylinder part, and including a screw groove formed on the outer surface. The cylindrical body is screwed with a support unit including a screw thread formed on the inner surface. As such, the present invention is capable of elevating the piston with a large or small movement, and more strongly supporting the elevated piston by adding the support unit and the fixing member.

    본 발명에 따른 철도공사용 하중지지장치는, 입력실린더부 및 출력실린더부로 구성된 유압잭을 포함하는 하중지지장치에 있어서, 상기 유압잭은 상기 입력실린더부에 결합되는 크기를 달리하는 제 1 펌핑장치 및 제 2 펌핑장치; 상기 출력실린더부의 피스톤 머리부 상단에 결합되는 레일받침부재; 상기 피스톤 머리부의 외주연 하부에 형성된 제 1 고정턱; 및 상기 출력실린더부의 외부를 감싸며, 외주연에 나사홈이 형성된 원통몸체;를 포함하며, 상기 원통몸체에는 내주연에 나사산이 형성된 받침 유닛이 나사체결 되는 것을 특징으로 한다. 따라서, 피스톤을 큰 움직임 또는 작은 움직임으로 상승시킬 수 있고, 받침 유닛, 고정부재를 추가 구성함으로써, 상승된 피스톤을 더욱 강하게 지지할 수 있다.


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    Title :

    Load Bearing Device for Railroad Construction


    Additional title:

    철도공사용 하중지지장치


    Contributors:

    Publication date :

    2017-01-09


    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



    Load Bearing Device for Railroad Construction

    European Patent Office | 2017

    Free access

    Railroad bearing performance under the wheel impact load environment

    Williams, S. / Ahlbeck, D. / Harrison, H. | Tema Archive | 1987


    Railroad construction

    Liddle, W. | Engineering Index Backfile | 1895


    Railroad construction

    Engineering Index Backfile | 1887


    RAILROAD VEHICLE BEARING UNIT

    NAKANOME TAKAHIRO / OKUNAGA GO | European Patent Office | 2017

    Free access