Roof bolter, also known as anchor drilling rig in some places, is a drilling tool in bolt support work of coal mine roadway. It has prominent advantages in improving support effect, reducing support cost, speeding up roadway construction, reducing auxiliary transportation volume, reducing labor intensity and improving utilization ratio of roadway section. Bolt drill is the key equipment of bolt support. It affects the quality of bolt support, such as the orientation, depth, accuracy of hole diameter and installation quality of bolt, and also involves the personal safety of operators, labor intensity and working conditions.