Blast hole positioning device

The utility model provides a blast hole positioning device which comprises a bottom plate, a positioning assembly is arranged on the outer wall of the top of the bottom plate, accurate processing of data during sliding positioning of a code spraying device is achieved by arranging a first electromagnetic sliding rail, a second electromagnetic sliding rail, a first grating electronic ruler and a second grating electronic ruler, and self-locking universal wheels are fixed to the outer wall of the bottom of the bottom plate through bolts. A supporting handle is welded to the outer wall of the top of the bottom plate, a handle is welded to the outer side wall of the supporting handle, a control panel is fixed to the outer side wall of the other end of the supporting handle through bolts, and the supporting handle and self-locking universal wheels are arranged, so that the whole device is convenient to move; the hole positioning position can be accurately positioned through the positioning assembly, meanwhile, the