The top beam according to the utility model is propitious to the increase of operation space for worker, and is more suitable for the hydraulic supporting device for thin coal layer exploitation.
本实用新型在保证顶梁强度的前提下有利于工人作业空间的增加，适用于薄煤层开采的液压支护设备。
The top beam according to the utility model is propitious to the increase of operation space for worker, and is more suitable for the hydraulic supporting device for thin coal layer exploitation.
本实用新型在保证顶梁强度的前提下有利于工人作业空间的增加，适用于薄煤层开采的液压支护设备。
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