The working valve block comprises a valve body, a valve rod and a differential one-way valve, the valve body is provided with a valve cavity, an oil inlet channel, a working oil channel, an oil return channel and a first pressure relief flow channel, the differential one-way valve is arranged in the working oil channel and used for blocking the working oil channel, and the differential one-way valve is provided with a hydraulic cavity; the end, away from the valve cavity, of the working oil channel communicates with the first pressure relief runner through the hydraulic cavity. The valve rod is movably arranged in the valve cavity, when the valve rod is located at the first position, the oil inlet channel communicates with the working oil channel through the valve cavity, when the valve rod is located at the second position, the working oil channel communicates with the oil return channel through the valve cavity, and the first pressure relief flow channel communicates with the oil return channel through the valve cavity. According to the working valve block and the forklift provided by the invention, the problem of poor stability of the existing lifting commutator segment is solved.

    本申请涉及工作阀块及叉车,工作阀块包括阀体、阀杆和差动单向阀,阀体设有阀腔、进油通道、工作油道、回油通道和第一泄压流道,差动单向阀设于工作油道内,以用于封堵工作油道,差动单向阀设有液压腔,工作油道远离阀腔的一端通过液压腔连通第一泄压流道。阀杆可活动地设于阀腔内,当阀杆处于第一位置时,进油通道通过阀腔连通工作油道,当阀杆处于第二位置时,工作油道通过阀腔连通回油通道,且第一泄压流道通过阀腔连通回油通道。本申请提供的工作阀块及叉车,解决了现有的起升换向片稳定性较差的问题。


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    Title :

    Working valve block and forklift


    Additional title:

    工作阀块及叉车


    Contributors:
    ZHANG HUI (author) / LU JIAJIE (author) / SUN YIFAN (author) / ZHONG QI (author) / HE XIANJIAN (author) / CHEN LI (author)

    Publication date :

    2022-06-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / 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 / F16K VALVES , Ventile



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