The invention discloses a conveying arm and portal frame overturning structure and a recovery and unfolding method. The overturning structure comprises a portal frame base, a portal frame, a conveying arm and a drive device. A conveying arm limiting mechanism is installed in the middle of the portal frame. A swing reversing wheel set is installed at the top end of the portal frame. The drive device is connected with a fixed pulley block in the conveying arm through a traction rope. The drive device can pull the conveying arm to swing around a conveying arm rotary shaft in a vertical plane to the conveying arm limiting mechanism through the traction rope. The conveying arm limiting mechanism is provided with a locking pin which is used for locking a cantilever crane and the portal frame after the conveying arm rotates in place. A rotary drive device is arranged on the inner side of the portal frame. The rotary drive device drives the portal frame and the conveying arm to rotate inwards on the whole. Under the action of the drive device, the swing reversing wheel set, the fixed pulley block and the rotary drive device, the portal frame and the conveying arm can extend to work positions and can be folded together to the largest extent.


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    Title :

    Conveying arm and portal frame overturning structure and recovery and unfolding method


    Contributors:
    YUAN YINGMING (author) / XU CHI (author) / HE JUN (author) / LIU LONGBING (author)

    Publication date :

    2015-11-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS , Transport- oder Lagervorrichtungen, z.B. Förderer zum Laden oder Abladen



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