PROBLEM TO BE SOLVED: To provide a ladder driving device capable of storing and compactly expanding a ladder even in a narrow space between a lower travelling body and an upper working body.SOLUTION: This ladder driving device 14 is mounted on a rough terrain crane 10. The ladder driving device 14 comprises an arm support shaft 49, a rocking arm 43, a rocking cylinder 65, a ladder support shaft 42, and a rotary cylinder 45. The arm support shaft 49 is arranged along the lengthwise direction of a lower travelling body 11, and rotatably supports the rocking arm 43. The ladder support shaft 42 is arranged in the orthogonal direction to the arm support shaft 49, and supports a ladder 13. The rocking cylinder 65 changes a posture of the ladder 13 by making the rocking arm 43 rise up/fall down, and the rotary cylinder 45 rotates the ladder 13. The ladder 13 is expanded to the side of the lower travelling body 11 by rotation with the arm support shaft 49 as the center, and is leant against the lower travelling body 11 by rotation with the ladder support shaft 42 as the center.SELECTED DRAWING: Figure 10

    【課題】下部走行体と上部作業体との間の狭い空間にも梯子を収納でき且つコンパクトに展開することが可能な梯子駆動装置の提供。【解決手段】この梯子駆動装置14は、ラフテレーンクレーン10に搭載される。梯子駆動装置14は、アーム支軸49、揺動アーム43、揺動シリンダ65、梯子支軸42及び回動シリンダ45を有する。アーム支軸49は、下部走行体11の長手方向に沿って配置され、揺動アーム43を回動可能に支持する。梯子支軸42は、アーム支軸49と直交する方向に沿って配置され、梯子13を支持する。揺動シリンダ65は、揺動アーム43を起伏させて梯子13の姿勢を変化させ、回動シリンダ45は、梯子13を回転させる。梯子13は、アーム支軸49を中心とする回動により下部走行体11の側方に張り出し、梯子支軸42を中心とする回転により下部走行体11に立て掛けられる。【選択図】図10


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    Title :

    LADDER DRIVING DEVICE


    Additional title:

    梯子駆動装置


    Contributors:

    Publication date :

    2016-05-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES / 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 / E06C LADDERS , Leitern



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