To provide a counterweight attaching/detaching device in which interference of a coupler with an object is avoided during lifting/lowering, even when a piston rod of a lifting/lowering device rotates around a central axis thereof.SOLUTION: A counterweight attaching/detaching device 1 comprises: a lifting/lowering device 2; and an interference avoidance device 3. The lifting/lowering device 2 includes: an oil hydraulic cylinder 4a including a piston rod 16; and a coupler 5 which is coupled to the piston rod 16 so as to extend from the piston rod 16 to the outside in a radial direction, and which performs lifting/lowering by passing an adjacency height area A adjacent to a guy link 120. A rotation range of the coupler 5 includes an interference avoidance range in which interference of the coupler 5 with a guy link 120 is avoided, when at least a part of the coupler 5 enters the adjacency height area A. The interference avoidance device 3 includes a rotation limiting part 25 which limits the rotation range of the coupler 5 to the interference avoidance range, at any height position until the coupler 5 reaches the adjacency height area A.SELECTED DRAWING: Figure 7

    【課題】昇降装置のピストンロッドがその中心軸回りに回転した場合であっても、接続具が昇降時に対象物に対して干渉するのを回避可能なカウンタウェイト着脱装置を提供する。【解決手段】カウンタウェイト着脱装置1は、昇降装置2と、干渉回避装置3と、を備え、昇降装置2は、油圧シリンダ4であってピストンロッド16を有するものと、ピストンロッド16から径方向外側へ延びるようにそのピストンロッド16に接続された接続具5であってガイリンク120に対して隣接する隣接高さ領域Aを通って昇降するものとを含み、接続具5の回転範囲には、接続具5の少なくとも一部が隣接高さ領域A内に入ったときに当該接続具5がガイリンク120に対して干渉しない回転範囲である干渉回避範囲が含まれ、干渉回避装置3は、接続具5が隣接高さ領域Aに達するまでのいずれかの高さ位置において接続具5の回転範囲を干渉回避範囲に制限する回転制限部25を有する。【選択図】図7


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    Title :

    COUNTERWEIGHT ATTACHING/DETACHING DEVICE


    Additional title:

    カウンタウェイト着脱装置


    Contributors:
    SAKAI KEIJI (author)

    Publication date :

    2019-06-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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