Research on characteristics analysis and intelligent monitoring system of hydraulic system of open-pit mine excavators

doi:10.16265/j.cnki.issn1003-3033.2023.S2.0039

Abstract

Abstract:

To prevent equipment failures caused by damage to hydraulic system components during the operation of hydraulic excavators in large open-pit mines, research on performance analysis and intelligent monitoring systems of hydraulic excavators during the operation process was carried out. A 350 t hydraulic excavator was taken as the research object. The main pump model and the whole system model of the excavator system were established based on AMESim simulation software. The independent motion characteristics of the working arm, vibration rod, and working bucket of the hydraulic excavator were simulated. The intelligent monitoring platform architecture of the hydraulic system of open-pit mine excavators including a data monitoring system, data transmission system, and intelligent analysis system was established and successfully applied in the Shenhua Baorixile open-pit mine. The results show that compared with the change law of the displacement and pressure of the hydraulic cylinder during the independent working process, the pressure during the composite motion process is higher and fluctuates due to the vibration and load effects that occur in various stages of the actual working process. The designed intelligent monitoring platform of the hydraulic system can realize the real-time and effective monitoring of the hydraulic system state of the mine excavator and can greatly improve the stability of the hydraulic system of the mine excavator.

Key words: hydraulic excavator, system characteristics, AMESim simulation, hydraulic system, intelligent monitoring

CLC Number:

X924.2安全监测技术与设备

ZHANG Zhouai, HAI Sufeng, XUE Guoqing, ZHANG Yuhua. Research on characteristics analysis and intelligent monitoring system of hydraulic system of open-pit mine excavators[J]. China Safety Science Journal, 2023, 33(S2): 122-127.

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参数名称	数值
主阀阀芯质量/kg	1
主阀阀芯直径/mm	20
主阀阀杆直径/mm	10
主阀弹簧刚度/(N·mm^-1)	85
系统安全阀开启压力/MPa	40
动臂缸活塞直径/mm	160
动臂缸活塞杆直径/mm	100
斗杆缸活塞直径/mm	200
斗杆缸活塞杆直径/mm	100
铲斗缸活塞直径/mm	200
铲斗缸活塞杆直径/mm	100
端口溢流阀开启压力/MPa	38
变量泵排量/(mL·r^-1)	260
发动机转速/(r·min^-1)	1 800