To provide a counterweight structure capable of performing positioning of an upper layer weight with respect to a lower layer weight safely and easily, while accessing an upper surface of the lower layer weight safely in a lamination type counterweight, and to provide a technology related to the same.SOLUTION: A lamination type counterweight 3 includes a weight case 4 and a lamination weight 5. The lamination weight 5 includes a lower layer weight 51, and an upper layer weight 53 laminated at an upper side of the lower layer weight 51. Inside the weight case 4, a staircase 6 is arranged on a machine body side which can access an upper surface of the lower layer weight 51 in a state where the upper layer weight 53 is removed. At the upper layer weight 53, a notch 533 is formed for arranging the staircase 6 in the case where the upper layer weight 53 is mounted on the weight case 4. An upper end of the staircase 6 is arranged at a position higher than an upper surface of the upper layer weight 53 mounted on the weight case 4.SELECTED DRAWING: Figure 2

    【課題】積層式のカウンタウエイトにおいて、下層ウエイトの上面に安全にアクセスしつつ、上層ウエイトを下層ウエイトに対して安全かつ容易に位置合わせすることが可能なカウンタウエイト構造及びそれに関連する技術の提供。【解決手段】積層式のカウンタウエイト3は、ウエイトケース4と、積層ウエイト5とを備える。積層ウエイト5は、下層ウエイト51と、下層ウエイト51の上側に積層される上層ウエイト53とを含む。ウエイトケース4の内部には、上層ウエイト53が取り外された状態において下層ウエイト51の上面にアクセス可能な階段6が機械本体側に配置される。上層ウエイト53には、上層ウエイト53をウエイトケース4に装着した場合に階段6を配置するための切り欠き533が形成されている。階段6の上端は、ウエイトケース4に装着された上層ウエイト53の上面よりも高い位置に配置される。【選択図】図2


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    Title :

    COUNTERWEIGHT STRUCTURE AND WORK MACHINE


    Additional title:

    カウンタウエイト構造及び作業機械


    Contributors:

    Publication date :

    2021-02-18


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E02F Baggern , DREDGING / B66C Krane , CRANES



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