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轮胎式装载机工作装置液压系统主要由油箱1、滤油器2、工作泵3、安全阀4、铲斗换向阀5、溢流补油阀6、动臂换向阀7、动臂缸8,铲斗缸9、散热器10以及操纵系统和管路附件等元件组成,如图1所示。这些元件配合间隙很小,且有节流孔,若液压油污染度较高或液压元件精密度较低,容易造成液压元件及整个液压系统故障。本文以XG953H型轮胎式装载机为例,分析其液压系统常见故障产生的原因,并提出排查方法。
Wheel loader working device hydraulic system mainly consists of tank 1, oil filter 2, working pump 3, safety valve 4, bucket valve 5, relief valve 6, boom valve 7, boom cylinder 8, bucket cylinder 9, radiator 10 and the operating system and piping accessories and other components, as shown in Figure 1. These components with a small gap, and have throttle, if the hydraulic oil pollution or high precision hydraulic components lower, likely to cause hydraulic components and the entire hydraulic system failure. This paper takes XG953H type wheel loader as an example to analyze the causes of common failures of hydraulic system and puts forward the troubleshooting methods.