Included are forks 3, cylinders 4 for causing the forks 3 to perform an ascending/descending operation in accordance with the flow rate of hydraulic oil, a first valve 5 for controlling the flow rate of hydraulic oil in accordance with an energizing current, a second valve 6 for regulating the flow rate of hydraulic oil in accordance with cylinder pressure, and a control portion 7. The control portion 7 calculates the flow rate to be regulated by the second valve 6, on the basis of cylinder pressure detected by a pressure sensor 9, calculates a current command value for the energizing current, with the flow rate to be controlled by the first valve 5 being set equal to the regulated flow rate, and changes the energizing current in two stages, with the current command value as the upper limit of the energizing current, thereby decelerating the forks 3 in two stages when stopping the ascending/descending operation.


    Access

    Download


    Export, share and cite



    Title :

    フォークリフトおよびフォーク制御方法


    Publication date :

    2020-09-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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



    フォークリフト及びフォーク部材

    European Patent Office | 2023

    Free access

    フォークリフトおよびフォーク制御方法

    European Patent Office | 2019

    Free access


    フォークリフト

    European Patent Office | 2024

    Free access

    フォークリフト

    European Patent Office | 2018

    Free access