Abstract: The present disclosure provides a hollow drive shaft which may include a hollow steel pipe, a mandrel set at the center of the hollow steel pipe in an axially direction, and a spiral rib plate set between the hollow steel pipe and the mandrel. The major diameter end surface of the spiral rib plate is spirally welded on the inner diameter surface of the wall of the hollow steel pipe. The minor diameter end surface of the spiral rib plate is welded on the outer diameter surface of the mandrel. The helix angle of the spiral rib plate is 10 to 45 degrees. The helical direction of the spiral rib plate is opposite to the delivery direction of a working torque M.

Abstract: The invention discloses a hollow drive shaft which may include a hollow steel pipe, a mandrel set at the center of the hollow steel pipe in an axially direction, and a spiral rib plate set between the hollow steel pipe and the mandrel. The major diameter end surface of the spiral rib plate is spirally welded on the inner diameter surface of the wall of the hollow steel pipe. The minor diameter end surface of the spiral rib plate is welded on the outer diameter surface of the mandrel. The helix angle of the spiral rib plate is 10 to 45 degrees. The direction of the helix angle of the spiral rib plate is opposite to the delivery direction of a working torque M. According to the present invention, the thickness of the wall and the weight of the drive shaft is reduced, and manufacturing costs are also reduced. The anti-bending and anti-torsional performances of the drive shaft are improved. Therefore, the technical problem of enabling the drive shaft to deliver large torque is solved.