To provide an internal suspension clamp capable of suspending a beehive type foot protection block stably, safely and easily, and capable of coping with horizontal suspension and inclined suspension.SOLUTION: An internal suspension clamp 10 for a foot protection block comprises: a body 20; a pair of arms 30 coupled to an upper part of the body so as to freely rotate; a pair of cams 40 coupled to a lower part of the body so as to freely rotate; and a link mechanism for rotating a cam in conjunction with the arms. By setting a retractable pin, the arms are locked to the body such that the arms are rotated by a predetermined angle in a direction in which the arms are closed against an urging force of a pull spring 55. Consequently, the cam is locked so as to be substantially buried in the body. By making the right and left lengths of a chain sling coupled to a suspension ring equal, the block can be suspended horizontally. By making the right and left lengths unequal, the block can be suspended at an inclination of an arbitrary angle θ.SELECTED DRAWING: Figure 9

    【課題】ビーハイブ型根固ブロックを安定且つ安全且つ簡単に吊り上げることができ、水平吊りと傾斜吊りに対応可能な内吊りクランプを提供する。【解決手段】本体20と、本体の上部に回動自在に連結された一対のアーム30と、本体の下部に回動自在に連結された一対のカム40と、アームに連動してカムを回転させるリンク機構とを有する根固ブロック用内吊りクランプ10である。抜き差しピンをセットすることにより、アームは、引きばね55の付勢力に抗してアームを互いに閉じる方向に所定角度回転させた状態で本体に対してロックされ、カムは実質的に本体内に埋没した状態にロックされる。吊環に連結するチェーンスリングの左右長さを同じにすればブロックを水平に吊り上げることができ、左右長さを変えればブロックを任意の角度θで傾斜させて吊り上げることができる。【選択図】図9


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    Title :

    INTERNAL SUSPENSION CLAMP FOR FOOT PROTECTION BLOCK


    Additional title:

    根固ブロック用内吊りクランプ


    Contributors:

    Publication date :

    2019-01-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66C Krane , CRANES



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