Drilling rig for coal mine

The utility model relates to a colliery machinery provides a drilling rig for coal mine, including drilling rod subassembly, connecting device, brill tail, the drilling rod subassembly comprises through a plurality of connecting device many drilling rods, bore the tail and pass through the connecting device connection at drilling rod subassembly right -hand member, bore the tail including boring tail card hole, boring tail front end hollow cylinder, boring tail rear end and bumping post, it sets up in the middle part of boring tail front end hollow cylinder to bore tail card hole, the bumpingpost welding is at the middle part of boring tail rear end both sides, connecting device one end is emboliaed and is bored tail front end hollow cylinder, will bore the tail and be connected with connecting device. The utility model provides the high life of drilling rod has reduced colliery manufacturing cost, improves workman work efficiency's effect. 本实用新型涉及煤矿机械领域，提供了种煤矿用钻探装置，包括钻杆组件、连接装置、钻尾；所述钻杆组件由多根钻杆通过多个连接装置组成；所述钻尾通过