The full-free gantry hydraulic system comprises a free cylinder, a side cylinder and an oil supply device, the oil supply device is provided with an oil supply main pipe and an oil return main pipe which are communicated with an inner cavity of the oil supply device, the oil supply main pipe is divided into two oil supply pipes to be connected with the free cylinder and the side cylinder respectively, and the oil return main pipe is divided into two oil return pipes to be connected with the free cylinder and the side cylinder respectively. Control valve groups are arranged on the two paths of oil return pipes and are respectively used for controlling the oil return speed of the free cylinder and the side cylinder so as to control the piston rods of the free cylinder and the side cylinder to synchronously retract. According to the invention, the piston rods of the side cylinder and the free cylinder can be driven to synchronously retract, so that the unloading speed of the forklift portal frame is increased, and meanwhile, the speed increasing cost is reduced.

    本发明公开了一种叉车全自由门架液压系统,包括自由缸、边缸和供油装置,供油装置设有与其内腔连通的供油主管和回油主管,供油主管分出两路供油管分别连接自由缸和边缸,回油主管分出两路回油管分别连接自由缸和边缸,且两路回油管上均设有控制阀组,两个控制阀组分别用于控制自由缸和边缸的回油速度,以控制自由缸和边缸的活塞杆同步缩回。本申请能够驱动边缸和自由缸的活塞杆同步缩回,以提高叉车门架的下架速度,同时降低了提速成本。


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    Title :

    Full-free gantry hydraulic system of forklift


    Additional title:

    一种叉车全自由门架液压系统


    Contributors:
    RUAN JINGXUAN (author) / YANG LIANG (author) / ZHANG XIAOLU (author) / HU JUYUN (author) / YU FENGBO (author) / MA HAILONG (author) / LI KAI (author) / ZHAO JIE (author) / HUANG KUN (author)

    Publication date :

    2024-08-30


    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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