To provide a manhole, etc. which are easy to lift without worrying about pinching a finger during a removal operation.SOLUTION: A manhole 1 comprises a plate-like lid 2 with a through hole 3, a wire winding body 24 provided on the back side of the lid 2 and capable of rotating with respect to a central axis extending in the direction which approximately matches a Z direction of the lid 2, a first wire 41 one side of which is wound around the first outer peripheral surface of the wire winding body 24, a second wire 42 one side of which is wound around the second outer peripheral surface of the wire winding body 24, and a roller 43 which is provided on the back side of the lid 2 and moves to one side of a Y direction when the first force is applied from the other side of the first wire 41, while moving to the other side of the Y direction when the second force is applied from the other side of the second wire 42. The lid 2 has a thickness variation part where the thickness increases toward one side in the Y direction. When the first force or the second force is applied, the roller 43 moves the overlapping position that overlaps the thickness variation part when viewed from the Y direction, to the Y direction.SELECTED DRAWING: Figure 1

    【課題】持ち上げ易くて、取り外し動作の際に指を挟む心配もないマンホール等を提供すること。【解決手段】マンホール1が、貫通孔3を有する板状の蓋2、蓋2の裏側に配置されて、蓋2のZ方向に略一致する方向に延在する中心軸に対して回動可能であるワイヤー巻取体24、ワイヤー巻取体24の第1外周面に一方側が巻回された第1ワイヤー41、ワイヤー巻取体24の第2外周面に一方側が巻回された第2ワイヤー42、及び、蓋2の裏面側に配置され、第1ワイヤー41の他方側から第1力が付与されるとY方向一方側に移動する一方、第2ワイヤー42の他方側から第2力が付与されるとY方向他方側に移動するローラ43を備える。蓋2が、厚さがY方向一方側に行くにしたがって大きくなる肉厚変動部を有し、ローラ43が、第1力又は第2力が付与されると、Y方向から見たときに肉厚変動部に重なる重なり位置をY方向に移動する。【選択図】図1


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    Title :

    MANHOLE, PASSENGER CONVEYOR, JIG, AND MANHOLE REMOVAL STRUCTURE


    Additional title:

    マンホール、乗客コンベア、治具、及びマンホール取外構造


    Contributors:

    Publication date :

    2020-07-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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