The invention discloses a portable well lid opening device and a manufacturing method thereof. The portable well lid opening device comprises a bracket, a lower hook, a hook hole, an upper hook, a hoist crane, a hoisting chain, a hoisting claw, force applying claws, a reeling machine, a height adjusting groove and a hoisting cross bar, and is characterized in that the height adjusting groove is formed in the bracket; the hoisting cross bar is arranged inside the height adjusting groove; the hook hole is formed in the middle part of the hoisting cross bar; the upper hook is arranged in the hook hole; the hoist crane is arranged below the upper hook; the hoisting chain is arranged on the hoist crane; the lower hook is arranged at the left end of the hoisting chain; the lower part of the lower hook is connected with the hoisting claw; the force applying claws are arranged around the hoisting claw; the right end of the hoisting chain is connected with the reeling machine.


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    Titel :

    Portable well lid opening device and manufacturing method thereof


    Beteiligte:
    ZHANG CHAOFENG (Autor:in)

    Erscheinungsdatum :

    01.04.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    B66D Haspeln , CAPSTANS



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