Wear-resistant gear shaft

The utility model discloses a wear-resisting gear shaft which comprises a gear shaft body, a gear ring is arranged on the gear shaft body, a bevel gear ring is connected to the gear shaft body in a sliding mode, limiting sleeves are connected to the gear shaft body in a threaded mode, the limiting sleeves are symmetrically distributed on the two sides of the bevel gear ring, and threaded parts are arranged on the two sides of the bevel gear ring. The limiting sleeve is provided with an internal thread groove corresponding to the thread part, and the internal thread groove is in threaded connection with the thread part in a matched mode so that the limiting sleeve can limit free sliding of the bevel gear ring. The gear shaft is novel in structure, the position of the bevel gear ring on the gear shaft body can be flexibly adjusted, it is guaranteed that enough contact areas exist between the bevel gear ring and external gears at different relative positions, and therefore the transmission effect is guaranteed,