Corrugated roller convenient to splice and install

The corrugated roller convenient to splice and install comprises a roller body and a plurality of semi-annular blocks, a cavity is formed in the roller body, a plurality of inserting grooves are symmetrically formed in the outer surface of the roller body, rotating blocks are arranged in the inserting grooves, transmission rods are installed at the inner ends of the rotating blocks, and the transmission rods penetrate through the inserting grooves to be arranged in the cavity. A first bevel gear is installed at the inner end of the transmission rod. The semi-ring-shaped blocks are sleeved on the outer surface of the roller body and combined with the roller body, meanwhile, the inserting blocks are inserted into the inserting grooves, the rotating blocks are driven by the rotating blocks to rotate by 90 degrees in the circular cavities to be clamped in the circular cavities, and the rotating blocks and the inserting holes are in a cross shape, so that the semi-ring-shaped blocks are fixed on the outer surface