论文编号:JX471 有设计图,论文字数:19912,页数:76 有开题报告 摘 要
In the groups of coal mining equipments , the roadheader has played a very important role .Nevertheless, as long as the requirement of coal becoming larger and larger and the fast rapid of mining, the partial-size tunneling roadheader has been trusted and used by the mine of home and abroad, because the partial-size tunneling roadheader has many advantages as follows: the body of roadheader is smart and suitable , it can cut out all kinds of face, it can present selective cutting, which can get a good result, it is active and effective.
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