An erection system for one or more elongated elements, such as structural columns, pre-fabricated reinforcing cages or tower-like structures includes one or more longitudinal lifting bars running parallel with the elongated element's longitudinal direction. The lifting bars are installed within or onto the elongated element through apertures in the element's upper and lower support pieces. A rigging system supports the upper portion of the lifting bar. The lifting bar's lower portion includes external threading to receive an internally threaded load bearing nut. The load bearing nut supports the elongated element's weight onto the lifting bar's lower portion. The upper and lower support pieces stabilize the elongated element with lateral restraint. Removing the load bearing nut and raising the lifting bar up through the support piece's apertures extracts the lifting bar from the elongated element. Adjustable spreader bars separate multiple lifting bars to minimize lateral and bending stresses in the lifting bar.


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    Titel :

    Erection system


    Beteiligte:

    Erscheinungsdatum :

    2018-02-13


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    E04G SCAFFOLDING , Baugerüste / B66C Krane , CRANES / E04B Allgemeine Baukonstruktionen , GENERAL BUILDING CONSTRUCTIONS / E04C STRUCTURAL ELEMENTS , Bauelemente



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