Cut seam drilling machine device for coal mine

A coal mine joint cutting drilling machine device comprises a running chassis (1) used as a movable supporting body, a drilling machine (7) arranged at the end of the running chassis (1) and used fordirectional blast hole operation of top cutting blasting, directional blast hole operation of top cutting blasting is achieved through the drilling machine (7), and end supporting of the drilling machine (7) is achieved through the running chassis (1). The operation range of the drilling machine (7) is enlarged, an anchor rod drilling machine is not used any more, and therefore the requirement forthe precision of the directional blast hole of roof cutting blasting is met. 一种煤矿用切缝钻机装置，包含有用于作为移动支撑体的行驶底盘(1)、设置在行驶底盘(1)的端头部并且用于切顶爆破的定向炮孔作业的钻机(7)，通过钻机(7)，实现了切顶爆破的定向炮孔作业，通过行驶底盘(1)，实现了对钻机(7)的端头支撑，扩大了钻机(7)的作业范围，不再使用锚杆钻机，因此满足切顶爆破的定向炮孔的精度。