The double-oil-cylinder three-stage full-free portal forklift comprises a first-stage portal, a second-stage portal and a third-stage portal, the second-stage portal is located in the first-stage portal and is in sliding connection with the first-stage portal, and the third-stage portal is located in the second-stage portal and is in sliding connection with the second-stage portal. A sliding frame is arranged on one side of the third-stage portal frame, the upright oil cylinder is arranged on the first-stage portal frame, the inverted oil cylinder is arranged on the second-stage portal frame, the first pulley mechanism is matched with the upright oil cylinder, the third pulley mechanism is matched with the inverted oil cylinder, and a second pulley mechanism is further connected between the first-stage portal frame and the third-stage portal frame. And a connecting pipe is connected between the upright oil cylinder and the inverted oil cylinder. The requirement for the full-free function of the three-stage gantry can be met by arranging the set of upright oil cylinders and the set of inverted oil cylinders, the outer diameters of the two oil cylinders are the same, and the problem that the observation sight is blocked due to the fact that the outer diameter of an existing middle cylinder is too large is solved.

    本发明公开了双油缸三级全自由门架叉车,包括第一级门架、第二级门架和第三级门架,所述第二级门架位于第一级门架内并与第一级门架滑动连接,所述第三级门架位于第二级门架内并与第二级门架滑动连接,所述第三级门架一侧设置有滑架,还包括设置在第一级门架上的正置油缸、设置在第二级门架上的倒置油缸、与正置油缸相配的第一滑轮机构和与倒置油缸相配的第三滑轮机构,所述第一级门架和第三级门架之间还连接有第二滑轮机构,所述正置油缸和倒置油缸之间连接有连接管。本发明通过设置一组正置油缸和一组倒置油缸即可实现三级门架的全自由功能要求,且两油缸的外径相同,解决了现有的中缸因外径过大而阻挡观察视线的问题。


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    Title :

    Double-oil-cylinder three-level full-free gantry forklift


    Additional title:

    双油缸三级全自由门架叉车


    Contributors:
    SHI LEI (author) / CHEN SHISHENG (author) / WANG DONGYAN (author) / XU LINGCAN (author) / CHEN CHUNMEI (author)

    Publication date :

    2023-09-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    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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