Groove cutting device for polyurethane heat preservation pipeline

The invention relates to a groove cutting device for a polyurethane thermal insulation pipeline. The groove cutting device comprises a base; the fixing base is vertically fixed to the upper surface of the base, and a clamping component is arranged on the upper side of the fixing base and used for clamping the peripheral wall of the heat preservation pipe; the movable seat is vertically arranged and slides on the base in the direction close to or away from the fixed seat; the rotating base is rotationally connected to the upper portion of the movable base, a plurality of cutters are arranged on the side, facing the fixed base, of the rotating base, and the cutters are arranged on the rotating base in a central symmetry mode; and a linkage part is arranged between the movable seat and the rotating seat and is used for keeping the movement of the movable seat and the rotation of the rotating seat to be synchronously carried out. The device has the effects of solving the problem that manual grinding operation is