HOLLOW TRANSMISSION SHAFT

摘要

A hollow transmission shaft comprises a hollow steel tube (3), a core shaft (1) axially arranged in the center of the hollow steel tube (3), and a spiral reinforcing plate (2) arranged between the core shaft (1) and the hollow steel tube (3). ). The major-diameter end surface of the spiral reinforcing plate (2) is welded to the inner diameter surface of the wall of the hollow steel tube (3), and the minor-diameter end surface of the spiral reinforcing plate (2) is welded to the outer diameter surface of the core shaft (1). The spiral reinforcing plate (2) has a helix angle (4) of 10-45 degrees, and the direction of the helix angle (4) of the spiral reinforcing plate (2) is opposite that of the direction of transfer of the working moment (M). The hollow transmission shaft reduces the wall thickness and weight of the transmission shaft, lowers the manufacturing cost, enhances the bending resistance and torsion resistance of the transmission shaft, solves the technical problem in the transmission of large moments by the transmission shaft, facilitates popularization and use of large vertical axis wind power generation devices and can be widely used in the power transmissions of various ship propellers, large carrier vehicles and other cases of high-power torque.