To provide a replacement method of a chain that can reduce a burden on an operator and is adaptable to many work sites.SOLUTION: Firstly, a door is placed at a lowermost position. After this closing step, an extendable support device 30 is installed between a weight 13 and an upward surface immediately below the weight 13. After this support step, the support device 30 is extended such that the weight 13 is moved upward by the support device 30. After this movement step, chains 15, 16 and 17 are replaced with new chains. After this replacement step, the support device 30 is contracted and the support device 30 is removed from a lower part of the weight.SELECTED DRAWING: Figure 5

    【課題】作業者の負担が少なく、且つ多くの現場で採用可能なチェーンの取替方法を提供する。【解決手段】先ず、ドアを最下位置に配置する。この閉鎖工程の後、伸縮可能な支持装置30をおもり13とおもり13の直下の上向きの面との間に設置する。この支持工程の後、支持装置30を伸ばし、支持装置30によっておもり13を上方に移動させる。この移動工程の後、チェーン15,16,17を新規チェーンに取り替える。この取替工程の後、支持装置30を縮め、支持装置30をおもりの下方から取り外す。【選択図】図5


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    Title :

    REPLACEMENT METHOD OF CHAIN


    Additional title:

    チェーンの取替方法


    Contributors:

    Publication date :

    2022-01-13


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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