To provide a cargo handling method capable of simplifying the work in lifting/lowering a heavy load such as a box culvert and safely lifting/lowering it in a short time.SOLUTION: A plurality of support points keeping approximately equal distances from the center of gravity F of a box culvert 101 are determined on a lower surface of the top slab 101A, which is a support surface of a box culvert 101. These support points are supported by a lifting/lowering hydraulic jack 34. The box culvert 101 is lifted/lowered by operating the lifting/lowering hydraulic jack 34 in such a state that the center of gravity F of the box culvert 101 exists at a position of one half or less of the height of the box culvert 101 below the support surface and exists inside a solid whose vertex is an intersection of the support points and a vertical line vertically extending to the ground from the support points.SELECTED DRAWING: Figure 12-1

    【課題】ボックスカルバート等の重量物の昇降の際の作業を簡略化でき、短時間で安全に昇降が可能となる荷役方法を提供する。【解決手段】ボックスカルバート101の支持面である天版101Aの下面において、ボックスカルバート101の重心Fからの距離がほぼ均等となる複数の支持点を決定し、それらの支持点を昇降用油圧ジャッキ34で支持し、ボックスカルバート101の重心Fが、支持面の下方であってボックスカルバート101の高さの1/2以下の位置に存在するとともに、支持点及びその支持点から地面に対し垂直に下した垂線との交点を頂点とする立体の内側に存在する状態で、昇降用油圧ジャッキ34を操作してボックスカルバート101を昇降させる。【選択図】 図12−1


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    Title :

    CARGO HANDLING METHOD OF HEAVY LOAD


    Additional title:

    重量物の荷役方法


    Contributors:

    Publication date :

    2021-01-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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 / B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS / E03F SEWERS , Abwasserkanäle



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