四柱支撑掩护式支架特点：支架稳定性好，顶梁后部支撑力大，具有较强的切顶性能，对顶板坚硬、顶板周期来压明显或强烈的地质条件适应性强，适用于具有稳定顶板条件的一次采全高采煤工作面。

Features of the four-column support cover bracket: good stability of the bracket, large supporting force at the back of the top beam, strong top-cutting performance, strong adaptability to the geological conditions of hard roof and obvious or strong pressure of the roof cycle, suitable for a full-height coal mining face with stable roof conditions.