The present invention relates to an apparatus to maintain horizontality of a platform, capable of minimizing unnecessary space use for rotating the platform. According to the present invention, a support boom comprises: a derrick cylinder coupled to a main frame of a high place working apparatus to be able to rotate, and coupled between the main frame and the support boom to adjust the angle of the support boom; a master cylinder disposed on one side of the derrick cylinder and operated by being interlocked in proportion to the length of the derrick cylinder to adjust the angle of the support boom; a level cylinder disposed at an end part of the support boom and operated by being interlocked in reverse proportion to the length of the master cylinder; a platform frame to support the lower part of the platform; and a platform angle adjustment unit disposed between an end part of the support boom and the platform frame to convert a length change of the level cylinder into an angle change of the platform frame.

    본 발명은 플랫폼 수평유지장치에 관한 것으로서, 지지붐은 고소작업장치의 메인프레임에 회동가능하게 결합되며, 상기 메인프레임과 상기 지지붐 사이에 결합되어 상기 지지붐의 각도를 조절하는 데릭실린더와; 상기 데릭실린더의 일측에 구비되며, 상기 데릭실린더의 길이에 비례하게 연동하여 동작하며 상기 지지붐의 각도를 조절하는 마스터실린더와; 상기 지지붐의 단부에 구비되며 상기 마스터실린더의 길이에 반비례하게 연동하여 동작하는 레벨실린더와; 상기 플랫폼의 하부를 지지하는 플랫폼프레임과; 상기 지지붐의 단부와 상기 플랫폼프레임 사이에 구비되어, 상기 레벨실린더의 길이변화를 상기 플랫폼프레임의 각도변화로 변환하는 플랫폼각도조절부를 포함하는 것을 특징으로 한다.


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    Title :

    PLATFORM HORIZONTALITY KEEPING APPARATUS


    Additional title:

    플랫폼 수평유지장치


    Contributors:
    KIM SANG GU (author) / KIM YONG JIN (author) / PARK JUNG GEUN (author) / KWON KWA LAM (author) / RYU JI WOO (author)

    Publication date :

    2019-01-02


    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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