The present invention relates to a boom for a ladder truck with an extension ladder. The boom for a ladder truck with an extension ladder comprises: a main boom rotatably installed on a vehicle and retractably extending in multiple stages; auxiliary booms retractably coupled to both transverse sides of the main boom in multiple stages; and an extension ladder attached to a lower end of the main boom to be relatively movable along the main boom and extending to the ground when the ladder truck is in operation, thereby allowing a basket of the ladder truck to descend to the ground. Since the extension ladder is coupled to an upper surface of the lower end of the main boom to both sides of which the auxiliary booms are coupled to be relatively movable to the ground, the basket which moves on the boom can be lowered to the ground, thus making it easy to load and unload the basket.

    본 발명은 연장사다리를 구비한 사다리차용 붐대에 관한 것으로서, 차량에 회전 가능하게 설치되어, 다단으로 신축 가능하게 연장되는 주붐대; 상기 주붐대의 횡방향 양측면에 각각 다단으로 신축 가능하게 결합되는 보조붐대; 및 상기 주붐대 하단에 상기 주붐대를 따라 상대 이동 가능하게 장착되어, 사다리차가 가동 중일 때 지면까지 연장됨으로써, 상기 사다리차의 대차가 지면까지 하강할 수 있도록 하는 연장사다리;를 포함하여 이루어지며, 보강을 위한 보조붐대가 양측면에 결합된 주붐대의 하단 상면에 연장사다리가 지면까지 연장되도록 상대이동 가능하게 결합되므로, 연장사다리를 이용해 붐대타고 이동하는 대차를 지면에 가까이 하강시켜 짐을 쉽게 대차에 상하차할 수 있는 이점이 있다.


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    Title :

    Boom For Ladder Truck with Extension Ladder


    Additional title:

    연장사다리를 구비한 사다리차용 붐대


    Contributors:
    LIM DAE WOO (author)

    Publication date :

    2023-01-04


    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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