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自１９９０年使用ＭＧ２×３００Ｗ型采煤机以来，我们在使用中除发现该采煤机机械传动部分存在着行走箱滚轮爬齿顶压馈齿条、行走箱联接件结构和强度不足等问题外，还经常出现摇臂不升降故障。造成摇臂不升降的主要原因是调高液压系统经常出故障所致。因此，下面就调高液...
Since the use of MG2 × 300W Shearer in 1990, we found that in addition to the mechanical transmission parts of the shearer there are problems such as the crawler top pressure feed rack of the trolley wheel, the structure and the lack of strength of the walk-way coupling, etc. , But also often appear rocker does not lift fault. The main reason that the rocker arm does not rise and fall is that the hydraulic system is often raised due to the raised hydraulic system. Therefore, the following increase in liquid ...