薄煤层刮板输送机技术现状与改进

Technical status and improvement of thin coal seam scraper conveyor

针对目前我国中厚煤层资源日渐减少的现状,提出利用机械化开采薄煤层煤炭资源,着重讨论了铸焊薄煤层专用刮板输送机替代常用的轧制刮板输送机实现机械化采煤工作面,通过对整机外形尺寸、结构形式以及使用寿命等方面进行比较,以验证替代方案的可行性。结果表明:在外形尺寸上薄煤层专用铸焊刮板输送机完全能适用于薄煤层工作面;在结构强度上以及使用寿命上,铸焊刮板输送机采用的封底式结构铸造槽帮以及耐磨中底板,结构强度也强于普通轧制刮板输送机开放式焊接结构,铸造槽帮以及耐磨中板使用寿命也远高于轧制槽帮以及低合金中板的使用寿命。研究结论得出专用薄煤铸焊刮板输送机完全可以实现薄煤层机械化开采。

In view of the current situation that China’s medium-thick coal seam resources had been decreasing,this paper proposed mechanized mining of thin coal seam coal resources.It focused on the use of cast-welded thin coal seam special scraper conveyor instead of the commonly used rolling scraper conveyor to achieve mechanized coal mining surface and by comparing the dimensions,structure and service life of the whole machine,the feasibility of the replacement scheme was verified.The results showed that the special cast-weld scraper conveyor for thin coal seam could be applied to the thin coal seam working face;in terms of structural strength and service life,the back cover structure casting groove and the wear-resistant middle plate used in the cast-scraper conveyor were stronger than the open-welded structure of the ordinary rolling scraper conveyor,and the casting groove and the wear plate life was also much longer than the service life of the rolling groove and low alloy plate.The research conclusions showed that the special thin coal cast scraper conveyor could be used for mechanized mining of thin coal seams.