To provide a suspension device for a dump truck capable of automatically greasing to a bearing part.SOLUTION: A suspension device for a dump truck comprises: a suspension cylinder 13 in which gas and compressible oil are encapsulated. Both end parts of the suspension cylinder are rotatably supported to a vehicle body frame 1 and a mount 1A through bearing parts 23, 34 respectively. A cylinder pressure (pressure in a bottom chamber 13a) P of the suspension cylinder 13 is detected by a pressure sensor 25, a controller 14 calculates a time differential value dP/dt of the cylinder pressure P based on a detection signal of the pressure sensor 25, then, when the time differential value dP/dt is changed from a positive value to a negative value, a greasing device is actuated to start greasing to the bearing parts 23, 24.SELECTED DRAWING: Figure 3

    【課題】軸受部への自動給脂を確実に行うことができるダンプトラックのサスペンション装置を提供する。【解決手段】ガスと圧縮性オイルが封入されたサスペンションシリンダ13を備え、このサスペンションシリンダの両端部がそれぞれ軸受部23,34を介して車体フレーム1とマウント1Aとに回動可能に支持されているダンプトラックのサスペンション装置において、サスペンションシリンダ13のシリンダ圧力(ボトム室13aの圧力)Pを圧力センサ25で検出し、コントローラ14が、この圧力センサ25の検出信号に基づいてシリンダ圧力Pの時間微分値dP/dtを演算し、その時間微分値dP/dtが正から負に変化したときに、給脂装置を作動させて軸受部23,24に給脂を開始するようにした。【選択図】図3


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    Title :

    SUSPENSION DEVICE OF DUMP TRUCK


    Additional title:

    ダンプトラックのサスペンション装置


    Contributors:

    Publication date :

    2019-09-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge / F16C SHAFTS , Wellen / F16N LUBRICATING , Schmierung



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