The invention provides a hydraulic elevating system with platforms extendable and retractable. The system comprises a rack, oil cylinder jacking shafts, an extendable and retractable platform, guardrails, a main platform, an upper support platform, a scissors-fork support, a pin shaft, a jacking oil cylinder, a lateral movement rack, connecting rods, pulley fixing seats, lateral movement pulleys and a lateral movement oil cylinder. The system is characterized in that the scissors-fork support is connected through the pin shaft and connected to the rack and the upper support platform through pin bolts; the upper support platform and the main platform are fixed together through bolts; the guardrails are fixed to the extendable and retractable platform and the main platform through bolts respectively; the lateral movement rack is fixed to the extendable and retractable platform by welding; the connecting rods are connected to the lateral movement rack and the pulley fixing seats by welding respectively; the lateral movement pulleys are fixed onto the pulley fixing seats through bolts and capable of rolling in sliding chutes in the main platform. The hydraulic elevating system has the advantages that the operation intensity of workers is reduced, the operation range is increased, the operation efficiency is raised, and the labor intensity is lowered.


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    Title :

    Hydraulic elevating system with platforms extendable and retractable


    Contributors:
    DANG GERONG (author) / LIANG QI (author) / CHENG JIAN (author) / HOU ZHIWEI (author) / WANG XIANG (author) / BAI JINGFENG (author) / SHI JIAQING (author) / YU LEI (author)

    Publication date :

    2015-08-26


    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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