To provide a manhole cover device capable of preventing a manhole cover from unintentionally opening while suppressing increase in a maintenance working load.SOLUTION: A manhole cover device 2 comprises a manhole cover 4 and a key part 18. The manhole cover 4 opens/closes an opening part of an escalator machine room. The key part 18 can change over a locked state and an unlocked state of the manhole cover 4 by inserting a handle member (lift screw) into a screw hole 6 formed in the manhole cover 4.SELECTED DRAWING: Figure 2

    【課題】メンテナンス作業での負担負荷の増大を抑制しつつマンホールカバーが意図せずに開いた状態となることを防止することが可能なマンホールカバー装置を提供する。【解決手段】マンホールカバー装置2は、マンホールカバー4と、鍵部18とを備える。マンホールカバー4は、エスカレータの機械室の開口部を開閉する。鍵部18は、マンホールカバー4に形成されたビス穴部6に取手部材(リフトスクリュー)が挿入されることで、マンホールカバー4の施錠状態と非施錠状態とを切り替え可能である。【選択図】図2


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    Title :

    MANHOLE COVER DEVICE


    Additional title:

    マンホールカバー装置


    Contributors:

    Publication date :

    2023-04-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / E02D FOUNDATIONS , Gründungen



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