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1.故障现象1台LR1350型350t履带起重初行走过程中突然出现单边履带无动作故障,同时行走减速器处出现异响,随即停止作业。开始怀疑是液压马达存在故障,但检测其压力正常。又将怀疑目标定在行走减速器,将行走减速器放油螺堵打开后,发现流出的齿轮油中含有大量铁屑,由此说明该起重机行走减速器已损坏。2.行走减速器工作原理(1)动力传递路线该履带起重机行走系统动力传递路线如图1所示。A4VG型液压泵驱动A6VM型
1. Symptom 1 LR1350 type 350t crawler hoisting a sudden during the initial unilateral track no action failure, while walking reducer abnormal noise, then stop working. Initially suspected hydraulic motor failure, but the normal pressure test. Also suspect the goal is to set the walking reducer, oil drain plug to open the drive reducer opened and found that the outflow of gear oil contains a lot of iron filings, indicating that the crane walking gear has been damaged. 2. Walking reducer working principle (1) power transmission line The crawler crane power transmission system walking system shown in Figure 1. A4VG type hydraulic pump drive A6VM type