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    • 16. 发明授权
    • Failure diagnosis method for dump truck and device therefor
    • 自卸车故障诊断方法及其设备
    • US06175788B1
    • 2001-01-16
    • US09155736
    • 1998-10-05
    • Nobuki HasegawaYukio SuganoGenichirou Watanabe
    • Nobuki HasegawaYukio SuganoGenichirou Watanabe
    • B60P104
    • B60G17/0185B60G2300/026B60G2400/25B60G2400/252B60G2400/38B60G2400/50B60G2400/70B60G2600/042B60G2600/08B60G2600/124B60G2800/91B60G2800/914B60G2800/92B60G2800/95B60G2800/97B60P1/045B60P1/283
    • It is possible to prevent generation of failure in a dump truck and to diagnose a true cause of failure in a short period of time. Thus the present failure diagnosis method diagnoses an operation and function of at least one of respective devices, such as an engine at a predetermined engine rotational speed, a transmission, respective axles, respective suspensions, hydro-pneumatic systems, and a brake while a vessel body (4) descends after evacuation of a load. The failure diagnosis device comprises body operating means (50) for raising or lowering a vessel body, a direction switching valve (7) for receiving a command from the body operating means to lower the vessel body, and a self-diagnosis control device (11) for using state detecting means (20) to detect and store a state of at least one of the respective devices at a predetermined engine rotational speed when the body operating means is at a predetermined operative position and for comparing a magnitude of a detected value and a rate of change with reference values on the basis of hysteresis data when carrying out failure diagnosis.
    • 可以防止自卸车中发生故障,并在短时间内诊断故障原因。 因此,本故障诊断方法诊断各个装置的操作和功能,例如在预定的发动机转速下的发动机,变速器,各个轴,各自的悬架,液压气动系统和制动器中的至少一个,而船舶 身体(4)在撤离负载后下降。 故障诊断装置包括用于升高或降低容器主体的主体操作装置(50),用于从主体操作装置接收命令以降低容器主体的方向切换阀(7),以及自诊断控制装置 ),用于当所述身体操作装置处于预定的操作位置时,使用状态检测装置(20)来检测并存储处于预定的发动机转速的各个装置中的至少一个的状态,并且将检测值的大小与 在执行故障诊断时基于滞后数据的参考值的变化率。