To provide a system for a lifting crane with improved movable counterweight.SOLUTION: A counterweight unit 935 includes a trolley and is movable with respect to a rotating floor. A counterweight unit moving device 960 is configured to move the counterweight unit 935 in a direction toward and away from a boom. Also included is a counterweight support beam 959 movably connected to the rotating floor having another rack joined to its underside. A counterweight support beam moving device 990 is connected between the counterweight support beam 959 and a counterweight support frame 932.SELECTED DRAWING: Figure 82

    【課題】改良された移動式吊り上げクレーンのカウンタウエイトシステムを提供する。【解決手段】カウンタウエイトユニット935はトロリーを含み、回転床に対して移動可能となっている。カウンタウエイト移動装置990は、カウンタウエイトユニット935をブームに向かう方向及びブームから離れる方向に動かすように構成されている。回転床に対して移動可能に連結されたカウンタウエイト支持ビーム959を含み、カウンタウエイト支持ビーム959は、その下面に結合されたもう一つのラックを含む。カウンタウエイト支持ビーム移動装置990がカウンタウエイト支持ビーム959とカウンタウエイト支持フレーム932との間に連結されている。【選択図】図82


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    Title :

    LIFTING CRANE WITH IMPROVED MOVABLE COUNTERWEIGHT


    Additional title:

    改良された可動式カウンタウエイトを備えた吊り上げクレーン


    Contributors:

    Publication date :

    2020-01-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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