Stone crushing device for coal mine collection

The utility model relates to the technical field of coal mine collection, and discloses a stone crushing device for coal mine collection, which comprises a shell, a fixing ring is fixedly mounted on the outer wall of the shell, two first connecting rods are fixedly mounted on the inner wall of the shell, and an output shaft of a motor penetrates through the inner wall of a dustproof shell. A second bevel gear is movably installed on the inner wall of the dustproof shell, a first stirring wheel, a second stirring wheel and a third stirring wheel are fixedly installed on the outer wall of the first rotating shaft and the outer wall of the second rotating shaft correspondingly, the bottom of the first rotating shaft is movably connected with a base, and two second connecting rods are fixedlyinstalled on the outer wall of the base. Through relative staggered connection of the first bevel gear, the second bevel gear and the third bevel gear, the stone crushing efficiency is improved, and through a staggered stone