The invention discloses a heavy hammer position limiting device, which comprises a pull rope and a position limiting switch, wherein the pull rope is connected with a heavy hammer; the position limiting switch is fixed on a bottom plate; a contact of the position limiting switch is connected with a switch of a control loop; the switch is a normally closed movable breaking contact; the heavy hammer position limiting device also comprises a middle lever and an elastic component; the middle lever is hinged to the bottom plate; the lower end of the middle lever is connected with the pull rope; the elastic component is used for triggering the contact by the middle lever when the pulling rope is loose; the elastic component is connected with the middle lever; the pulling torque of the elastic component on the middle lever is smaller than the pulling torque of the heavy hammer on the middle lever. The heavy hammer position limiting device has the advantages that the application mode of the position limiting switch is improved, and the service life of the position limiting switch is prolonged. The invention also discloses hoisting equipment comprising the heavy hammer position limiting device.


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    Title :

    Hoisting equipment and heavy hammer position limiting device of hoisting equipment


    Contributors:
    SHA XUANBAO (author) / ZHANG LI (author)

    Publication date :

    2015-12-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66C Krane , CRANES



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