Sleeve construction shearing device capable of guaranteeing perpendicularity of notch for fire engineering

The sleeve construction shearing device comprises a base, an air cylinder and a shearing blade, installation rods are fixed to the left side and the right side of the base, the air cylinder is fixed to the upper portion of the middle of each installation rod, a containing table is fixedly installed below the base, a containing groove is formed in the upper portion of the containing table, and the shearing blade is arranged in the containing groove. Limiting rods are fixed to the left end and the right end of the mounting rod, a fixing plate is arranged above the limiting rods, fastening nuts are arranged above the limiting rods, and a shearing groove is formed in the surface of the containing table. According to the sleeve construction shearing device capable of guaranteeing the perpendicularity of the notch for the fire engineering, the fixing plates with the middle being of an arc-shaped structure are arranged, limiting rods can be clamped through the fixing plates, fastening nuts are matched for use, the l