Shaft end locking structure device

The invention belongs to the technical field of mechanical connection, solves the problem that a conventional shaft end locking device is not high in reliability and economical efficiency during connection and use, and particularly relates to a shaft end locking device which comprises a gear, two sets of bearings are symmetrically arranged on the two sides of the gear, and an anti-fluctuation connecting mechanism is arranged in the gear. An inner spline is arranged on the inner wall of the gear, and two sets of nut locking mechanisms connected to the gear are arranged on the outer side of the anti-fluctuation connecting mechanism. The nut locking mechanism, the anti-fluctuation connecting mechanism and the gear form a stable connecting whole and are mutually locked, the transverse size of the gear shaft can be effectively controlled, the structural weight is reduced, in addition, a spring shock absorber model is formed by arranging the spring, transverse load fluctuation is relieved, impact damage of loads to