Coal mining machine roller tail blade and wear-resisting plate

The utility model discloses a coal mining machine roller tail blade and a wear-resisting plate, wherein the roller tail blade is provided with a plurality of step positioning long holes and first expansion pin holes which are matched with the tail part of a roller; the step positioning long hole comprises a lower kidney-shaped groove and an upper positioning opening, and stable positioning is achieved through a special shape. The wear-resisting plate is arranged on the roller tail blade and is connected with the second expansion pin holes through a plurality of step positioning pins, and the wear-resisting plate body adopts a fan-shaped design, so that tight attachment is ensured, and the stability is improved. According to the design, the wear resistance of the coal mining machine roller is optimized, the service life of the roller is prolonged, and the working efficiency is improved. 本实用新型公开一种采煤机滚筒尾叶片、耐磨板，其中滚筒尾叶片具有多个台阶定位长孔和第一涨销孔，适配滚筒尾部；台阶定位长孔包括下腰形槽和上定位口，通过特殊形状实现稳固的定位；耐磨板设置在滚筒尾叶片上，通过若干台阶定位销和第二涨销孔连接，耐磨板本体采用扇形