Weeding machine for agricultural planting

The invention relates to the technical field of agricultural planting, in particular to a weeding machine for agricultural planting. First grooves are formed in the left sides of the front side wall and the rear side wall of a box body, a second groove is formed in the left side of the box body, and the first grooves and the second groove are arranged in a penetrating mode; the upper ends and the lower ends of screw rods are correspondingly screwed on the upper side walls and the lower side walls of the first grooves through bearings; nuts sleeve the screw rods in a screwed mode, and the inner side walls of the nuts abut against the side walls of the first grooves; the outer side walls of the front nut and the rear nut are correspondingly connected with walking wheels in a screwed mode through shafts and bearings; first gears fixedly sleeve the upper ends of the screw rods; and the upper side walls and the lower side walls of the left sides of the first grooves are correspondingly and rotationally connected w