Combined roadblock tire breaking device capable of being spliced

The invention relates to a spliced combined roadblock tire breaking device which comprises a roadblock warning column, a spring clamp, a spring clamp fixing seat, a right tire breaking nail plate, a tire breaking hollow nail, a push rod, a base, a hinge, a left tire breaking nail plate, two guide rods and a sliding block. The lower end of the roadblock warning column is fixedly connected with the upper end of the base; the left and right tire breaking nail plates are respectively hinged with the left and right sides of the base through hinges; the spring clamp fixing base is fixed to the inner wall of the roadblock warning column, two clamping arms of the spring clamp are installed on the spring clamp fixing base, the upper ends of the two clamping arms extend out of strip-shaped through holes in the two sides of the roadblock warning column respectively, the upper ends of the two guide rods are connected with the spring clamp fixing base, and the lower ends of the two guide rods are fixedly connected with th