Lifter locking mechanism

The utility model provides a lifter locking mechanism and belongs to the technical field of lifters. The lifter locking mechanism comprises a motor component, a universal transmission shaft, a triangular connection tray, connection rods, L-shaped locking pins and crescent locking plates. The motor component, the universal transmission shaft, the triangular connection tray, the connection rods and the L-shaped locking pins are arranged on lifter lifting frames, and the crescent locking plates are fixed on lifter fixed frames. An output shaft of the motor component is connected with the triangular connection tray through the universal transmission shaft, the connection rods are arranged on the left side and the right side of the triangular connection tray respectively, one ends of the connection rods are hinged to the triangular connection tray, and the other ends of the connection rods are hinged to the L-shaped locking pins; the L-shaped locking pins are matched with the crescent locking plates. The lifter locking mechanism can effectively avoid the problem that a lifter locking function fails, and the service life of the motor component is prolonged.