Down-the-hole drill guide hole positioner

The utility model provides a down-the-hole drill guide hole positioner, and belongs to the technical field of building construction. The down-the-hole drill guide hole positioner comprises a grounding base, the grounding base comprises a transition plate, telescopic assistors and a grounding device, the transition plate is square and vertically placed, the telescopic assistors are fixedly and symmetrically arranged at the top end of one side of the transition plate, and the grounding device is arranged at the bottom end of the other side of the transition plate; a positioning block is arranged at one end, far away from the transition plate, of the telescopic assist device; and the expansion piece comprises a control machine and an expansion piece, and the control machine is fixedly connected to the bottom end of the transition plate. According to the down-the-hole drill guide hole positioner obtained through the design, the grounding base is fixed to the ground through the grounding device, the whole device c