Gear regulating device for impact drill gearbox

The invention relates to the technical field of an impact drill, in particular to a gear regulating device for an impact drill gearbox. The gear regulating device comprises a gearbox front case, a torsion cover, a speed reducing mechanism and a gear jumping mechanism, wherein the gear jumping mechanism comprises an annular regulating screw, a plurality of gear jumping posts and a gear jumping gasket, a compression spring is arranged on each gear jumping post in a sleeving way, the two ends of the compression spring are respectively connected onto the bottom of a regulating screw and the gear jumping posts, the torsion cover is in screw thread transmission connection with the regulating screw, the lower ends of the gear jumping posts are connected with the speed reducing mechanism, the gear jumping gasket is glidingly connected onto the gearbox front case along the vertical direction, a locking structure capable of locking the gear jumping gasket is arranged between the torsion cover and the gearbox front case, when the function needs to be regulated to the electric drill function, the torsion cover only needs to rotate in the anticlockwise direction, and the gear jumping gasket can be locked and fixed through the gasket locking structure, so that the jumping gasket cannot vertically jump to realize the electric drill function. The gear regulating device has the advantages that the gear can be fast regulated to the electric drill gear or the impact drill, the regulating stroke is small, the operation is simple and convenient, and the efficiency is high.