To improve credibility of an automatic brake system.SOLUTION: An automatic brake system 24 is so configured as to include: a second accumulator 25F, 25R; a front side second pipeline 28 and a rear side second pipeline 29; a second brake valve 30F, 30R; a first electromagnetic changeover valve 32; a first shuttle valve 33F, 33R; and a controller 37. The front side second pipeline 28 is provided with a second electromagnetic changeover valve 34F and a pressure sensor 35F, and the rear side second pipeline 29 is provided with a second electromagnetic changeover valve 34R and a pressure sensor 35R. The controller 37 controls changeover of the second electromagnetic changeover valve 34F, 34R when it is determined that the second brake valve 30F, 30R is not normally operated on the basis of a pressure of a working fluid detected by the pressure sensor 35F, 35R and an operation signal supplied to the first electromagnetic changeover valve 32 or the second brake valve 30F, 30R.SELECTED DRAWING: Figure 2

    【課題】自動ブレーキシステムの信頼性を高める。【解決手段】 自動ブレーキシステム24は、第2アキュムレータ25F,25Rと、フロント側第2管路28およびリヤ側第2管路29と、第2ブレーキ弁30F,30Rと、第1の電磁切換弁32と、第1シャトル弁33F,33Rと、コントローラ37とを含んで構成され、フロント側第2管路28には、第2の電磁切換弁34Fと圧力センサ35Fが設けられ、リヤ側第2管路29には、第2の電磁切換弁34Rと圧力センサ35Rが設けられる。コントローラ37は、圧力センサ35F,35Rで検出した作動流体の圧力と、第1の電磁切換弁32または第2ブレーキ弁30F,30Rに供給した動作信号とに基づいて第2ブレーキ弁30F,30Rが正常な動作をしていないと判断した場合に、第2の電磁切換弁34F,34Rを切換制御する。【選択図】 図2


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    Title :

    BRAKE SYSTEM OF DUMP TRUCK


    Additional title:

    ダンプトラックのブレーキシステム


    Contributors:

    Publication date :

    2019-02-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein / F16K VALVES , Ventile



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