The invention relates to a lifting and centering device for a large diameter pipeline. The lifting and centering device for the large diameter pipeline comprises multiple lifting and centering units which are arranged side by side, each lifting and centering unit comprises a carrier roller and a carrier roller support, each carrier roller is installed on the corresponding carrier roller support, the carrier roller supports are fixed on a connecting cover, the lower surface of the connecting cover is connected with lifting rods and a spiral elevator, the other ends of the lifting rods are located inside a fixed cylinder which is fixed on a support, and the spiral elevator is also fixed on the support; the fixed cylinder is filled with hydraulic oil, the lower portion of the fixed cylinder is provided with an oil pipe connector, and the fixed cylinder is communicated with a hydraulic oil pipeline through the oil pipe connector; the spiral elevator is connected with a servo motor. According to the lifting and centering device for the large diameter pipeline, by controlling the rotation of the servo motor, the lifting height of the spiral elevator can be controlled, and the centers of the pipelines with different pipe diameters can reach pressure testing center accurately; after the pipeline is filled with pressure test media, the lifting rods mainly bear the weight of the pipeline and the pressure test media, the raising tonnage of the spiral elevator is greatly reduced, the support device is simpler, the manufacturing cost is lower, and the maintenance is convenient.


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    Title :

    Lifting and centering device for large diameter pipeline


    Contributors:
    MA HAIKUAN (author) / SUI JIAN (author) / XU NENGHUI (author) / LI PEILI (author) / KOU YONGLE (author)

    Publication date :

    2015-10-07


    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



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