Anti-seismic locking bolt for mining machinery

The utility model relates to the technical field of mining machinery, and provides an anti-seismic lock bolt for mining machinery, which comprises a main bolt, a bolt head is arranged at the top end of the main bolt, a positioning groove is arranged on the side surface of the main bolt along the direction of a screw rod, and the bottom of the main bolt can be fixed on a first workpiece. The fixed main bolt is sleeved with a positioning piece, a second workpiece can be fixed on the positioning piece, the second workpiece is fixed through a first nut, a positioning nut sleeve is arranged outside the first nut, and a second nut is installed on the positioning nut sleeve. By means of the technical scheme, the problems that in the prior art, due to mechanical vibration, bolts are loosened, mechanical parts are damaged or even damaged, and machines break down and cannot continue to operate are solved. 本实用新型涉及矿山机械技术领域，提出了一种矿山机械用抗震防松螺栓，包括主螺栓，所述主螺栓的顶端设置有螺栓头，所述主螺栓的侧面顺丝杆方向开设有定位槽，所述主螺栓的底部可以固定在第一工件的上面，所述固定好的主螺栓上套有定位片，所述定位