PROBLEM TO BE SOLVED: To provide a boom attaching/detaching device and an attaching/detaching method which can a boom to be easily attached to and detached from an upper turning body without requiring a crane for lifting the boom.SOLUTION: A boom attaching/detaching device 31, which attaches and detaches a boom to be attached to and from an upper turning body so as to rise and fall, comprises: a base frame 32 which is placed on a rear deck of a trailer 27 that transports a boom (an expansion boom 15); a fixing part 33 for the boom provided on the base frame; an expansion boom 34 provided in a rear-deck width direction in a longitudinal direction at the front and back of the base frame; and a jack cylinder 35 provided at a tip part of the expansion beam. The expansion beam has strokes with which the jack cylinder is stored in the rear-deck width when shortening the boom and the jack cylinder is protruded to the outside of the rear deck when expanding the boom. The jack cylinder has strokes with which a grounding part at a lower end thereof is risen above a lower face of the base frame when shortening the boom, and the base frame is risen above the rear deck when expanding the boom.SELECTED DRAWING: Figure 1

    【課題】 ブーム吊り上げ用のクレーンを必要とせずに、上部旋回体に対するブームの着脱を容易に行うことができるブーム着脱装置及び着脱方法を提供する。【解決手段】 上部旋回体に起伏可能に取り付けられるブームを着脱するブーム着脱装置31であって、ブーム(伸縮ブーム15)を輸送するトレーラ27の荷台上に積載されるベースフレーム32と、ベースフレーム上に設けられたブームの固定部33と、ベースフレームの前後の荷台幅方向に設けられた伸縮ビーム34と、伸縮ビームの先端部に設けられたジャッキシリンダ35とを備え、伸縮ビームは、短縮時にジャッキシリンダを荷台幅内に収納し、伸長時にジャッキシリンダを荷台外方に突出させるストロークを有し、ジャッキシリンダは、短縮時に下端の接地部をベースフレームの下面以上に上昇させ、伸長時にベースフレームを荷台上方に上昇させるストロークを有している。【選択図】 図1


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    Title :

    BOOM ATTACHING/DETACHING DEVICE AND ATTACHING/DETACHING METHOD


    Additional title:

    ブーム着脱装置及び着脱方法


    Contributors:

    Publication date :

    2016-12-15


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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