Novel cutting device for municipal tunnel construction

The utility model discloses a novel cutting device for municipal tunnel construction, which comprises a bottom plate and a door-shaped support, rollers are arranged at four corners of the bottom surface of the bottom plate, a cross rod is fixedly connected between the lower parts of upright posts on two sides of the door-shaped support, a support post and a water tank are arranged on the bottom plate, and a movable rod is hinged to the support post. A cutter and a motor driving the cutter to rotate are arranged at one end of the movable rod, the other end of the movable rod is arranged on thetransverse rod in a lap joint mode and extends out of the transverse rod, a pedal rod with one end fixedly connected to the bottom of the movable rod is hinged to the transverse rod, and a spring is arranged between the bottom plate and the movable rod and located on the side, close to the cutter, of the supporting column. The upper end of the water tank is provided with a water injection port, anaccumulator jar and a wat