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近几年来,兖州矿业(集团)公司机械制修厂针对液压支架立柱存在的一些结构不合理和拆卸比较困难的状况进行了改进,减小了损坏率,取得了良好的效果。为了下次维修和使用的方便,将加长杆的外圆稍微车小一些是常用的方法。这种立柱的保持套也存在类似的情况,保持套和活柱的配合也是H11/c11的,虽然配合长度短,但是其粗糙度比较差而且容易锈蚀,工人在
In recent years, Yanzhou Mining (Group) Co., Ltd. mechanic repair plant for the hydraulic support column structure of some existing unreasonable and demolition more difficult to improve the situation, reducing the damage rate and achieved good results. In order to repair and use the convenience of the next time, it will be common practice to increase the outer diameter of the extension rod slightly smaller. A similar situation exists for the retaining sleeve of such a column, and the fitting between the retaining sleeve and the column is also H11 / c11. Although the mating length is short, the roughness is relatively poor and the workpiece is prone to corrosion