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某型液压挖掘机在进入市场后,出现风扇轴承座、轴承、皮带轮、皮带和风扇损坏等问题。通过分析发动机质量、风扇允许不平衡量以及对故障进行现场调查,发现发动机风扇周圈带有护圈,比较容易黏附沙土,造成风扇承受巨大的离心惯性偏心力,风扇轴承受到的不平衡力超载,导致此类故障发生。针对故障原因,建议更换无护圈的风扇,加强日常清理工作。
A type of hydraulic excavator into the market, there fan bearing, bearing, pulley, belt and fan damage and other issues. By analyzing the quality of the engine, the fan allows unbalance and on-site investigation of the fault, it is found that the fan ring of the engine has a guard ring which is easy to adhere to the sand, causing the fan to bear eccentric eccentric centrifugal force, overloading the unbalance force of the fan bearing, Cause this kind of breakdown happen. For the cause of the malfunction, it is recommended to replace the non-retainer fan to enhance the daily cleaning work.