V-shaped grooving machine for pavement bending crack repairing construction

The invention provides a V-shaped grooving machine for pavement bending crack repairing construction. The machine comprises an upper machine frame and a lower machine frame, a flying dust collecting device, a grooving device, a motor, a triangular belt, a motor belt wheel, an upper twisting seat, a bearing, a grooving belt wheel, a dust collecting spring, a guide sleeve, a handrail and a nut whichare installed on the upper machine frame, and a universal wheel, a supporting land wheel, a lower twisting seat and a screw rod seat which are installed on the lower machine frame, the left ends of the upper machine frame and the lower machine frame are hinged through a hinge seat shaft through which the upper hinge seat and the lower hinge seat are communicated in series; the grooving machine ischaracterized in that the surface of a conical cutter body of the grooving machine is provided with cutting edges which are arranged on a plurality of spiral lines with the screw pitches gradually reduced from top to bottom,