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1.故障现象1台配装23.5-25-20PR-L3型斜交轮胎的某型6t装载机在使用过程中,经常出现前轮内胎漏气故障,刚把左轮内胎修补好,几天后右轮内胎又出现漏气。主机厂与轮胎配套厂家到现场检查,发现内胎损坏部位均位于外胎垫带边部,且外胎垫带胎趾处起褶皱,如图1所示。2.故障排查现场检测该装载机轮胎轮辋曲线符合国标要求。该机刚销售1个月,轮辋与胎踵接触部位有不同程度磨损,如图2所示。
1. Symptom 1 set equipped with 23.5-25-20PR-L3 bias type 6t loaders in the course of a 6t loader, the front tire often appear a leak, just repair the left wheel inner tube, a few days after the right Wheel inner tube appeared leakage. Host factory and tire manufacturers to the scene to check and found that the damaged parts of the inner tube are located in the outer edge of the tire cushion, and tire cord with toe fold, as shown in Figure 1. 2. Troubleshooting Site Test The loader tire rim curve in line with national standards. The aircraft just sold 1 month, the rim and the fetal heel contact parts have different degrees of wear and tear, as shown in Figure 2.