Fixed-length cutting device for bricks

The utility model discloses a fixed-length cutting device for bricks, and belongs to the technical field of wall masonry construction. Comprising a bolt, a bottom plate, a vertical plate, a cutting knife, a vertical rod, a sleeve, a spring, a positioning ring and a beating plate, the bottom plate is vertically welded with the bottom end of the vertical plate; a notch is formed in the bottom plate; a bolt penetrates through the notch of the bottom plate to be fixed; the side wall of the sleeve is welded with the outer side of the vertical plate; the top of the vertical rod is welded with a striking plate; the positioning ring penetrates through the vertical rod and is welded and fixed; the spring penetrates through the vertical rod; the lower end of the vertical rod is welded with the top end of the cutting knife; and the spring is arranged between the sleeve and the positioning ring and is welded with the positioning ring. The brick cutting device has the advantages that the brick cutting device is simple to