Scaffold convenient to disassemble and assemble

The scaffold convenient to disassemble and assemble comprises a pedal plate, extension plates are movably installed on the left side and the right side above the pedal plate, movable shafts are fixedly installed on the portions, below the extension plates, of the left side and the right side of the upper end of the pedal plate, and rotating seats are fixedly installed on the outer sides of the movable shafts. The front end and the rear end of the movable shaft extend to the front side and the rear side of the rotating seat, the pedal plate and the extension plate are movably connected throughthe movable shaft and the rotating seat, a connecting seat is fixedly installed on the edge side of the upper end of the pedal plate and comprises a ball bearing, and the outer side of the lower end of the ball bearing is fixedly connected with the pedal plate. A threaded sleeve is fixedly installed at the upper end of the inner side of the ball bearing, and a reinforcing rod is fixedly installedat the position, located a