三种不同形式的顶护板在采煤机上的应用分析

摘要

The text introduces three different upside covering about coal winning machine, by comparing and analyzing structure of three upside covering, considering advantage and disadvantage of application; according to different coal seam condition and different coal winning machine, user choses upside covering adapted to different coal winning machine and distinguishingly coal seam condition.%本文介绍了三种不同形式的顶护板在采煤机上的应用，通过对三种顶护板的结构进行对比分析，并考虑在使用中的优缺点，用户可根据不同的煤层条件和采煤机机型大小，选择适合于不同采煤机和特殊煤矿地质条件的顶护板。