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XG822i型挖掘机是厦工生产的电控智能挖掘机,不同于传统的液控型和电液控制型挖掘机。该机液压控制系统的多路阀采用电液闭环控制,大大提高了液压系统的控制精度和响应速度。其结构原理与传统挖掘机控制系统相差较大,调试、维修方法也有所不同。本文根据该型挖掘机的控制原理,介绍该型挖掘机研发及生产过程中出现的5种常见故障排查实例。
XG822i excavator is a Xiamen-based production of electronic control intelligent excavators, unlike the traditional liquid-controlled and electro-hydraulic control of excavators. The machine hydraulic control system of multi-way valve using electro-hydraulic closed-loop control, greatly improving the hydraulic system control accuracy and response speed. The structural principle and the traditional excavator control system vary greatly, debugging, maintenance methods are also different. Based on the control principle of the excavator, this paper introduces five common troubleshooting examples in the development and production of the excavator.