An engine (12) drives a variable capacity-type hydraulic pump (16), discharged hydraulic oil is selectively supplied to a cooling fan (19) and a hoist cylinder (11) in accordance with switching of a selection valve (17), thereby controlling the same on the basis of each target value. A pump discharge pressure (Pp) of the hydraulic oil discharged from the hydraulic pump (16) and a motor supply pressure (Pm) of the hydraulic oil supplied to a hydraulic motor (18) via the selection valve (17) are detected by sensors (27, 28) and are compared with pressure determination values stored in advance as a pump discharge pressure (Pp) and an actuator supply pressure (Pm) generated when the target value is achieved. Presence/absence of abnormality in the hydraulic actuator control device (15) is determined on the basis of a result of the comparison, and when abnormality is determined to have occurred, control is performed to minimize the capacity of the hydraulic pump (16).


    Access

    Download


    Export, share and cite



    Title :

    HYDRAULIC ACTUATOR CONTROL DEVICE FOR DUMP TRUCK


    Additional title:

    STEUERUNGSVORRICHTUNG EINES HYDRAULISCHEN AKTUATORS FÜR MULDENKIPPER
    DISPOSITIF DE COMMANDE D'ACTIONNEUR HYDRAULIQUE POUR CAMION-BENNE


    Contributors:

    Publication date :

    2024-03-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    F04B Verdrängerkraft- und Verdrängerarbeitsmaschinen für Flüssigkeiten , POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS / B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS / E02F Baggern , DREDGING / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL



    HYDRAULIC PUMP CONTROL DEVICE AND DUMP TRUCK

    AKIMOTO YASUKI | European Patent Office | 2022

    Free access

    Control system for dump truck, dump truck, and control method for dump truck

    OSAGAWA KENTA / TAKEDA KOJI | European Patent Office | 2018

    Free access

    DUMP TRUCK CONTROL SYSTEM, DUMP TRUCK, AND DUMP TRUCK CONTROL METHOD

    OSAGAWA KENTA / TAKEDA KOJI | European Patent Office | 2017

    Free access

    CONTROL SYSTEM FOR DUMP TRUCK, DUMP TRUCK, AND CONTROL METHOD FOR DUMP TRUCK

    OSAGAWA KENTA / TAKEDA KOJI | European Patent Office | 2020

    Free access

    CONTROL SYSTEM FOR DUMP TRUCK, DUMP TRUCK, AND CONTROL METHOD FOR DUMP TRUCK

    OSAGAWA KENTA / TAKEDA KOJI | European Patent Office | 2018

    Free access