关于1MG250采煤机提高采高的做法

On a way increasing cutting height of 1MG250 coal machine

介绍了对1MG250采煤机为增加采高而作的革新改造。通过增加机组底托架高度和摇臂长度，极大地提高了采煤工作面的回采率，取得了可观的经济效益。

The innovation with increasing cutting height of 1MG250 coal machine is introduced in this paper. The face percentage extraction can greatly be improved through increasing the height of the unit foundation surpport and extending the suspensive arms, the economic effciency can impressively be obtained.