The invention discloses an anti-falling protection device of an
elevator. The device comprises a
vertical acceleration sensor, a controller, a storage battery, fixed rails, fixing rods and retractable motors, wherein the
vertical acceleration sensor is disposed on the top of an
elevator car, the fixed rails are arranged on the two sides of an
elevator shaft, the fixing rods and the retractable motors are arranged on the side walls of the elevator car, and the fixed rails are evenly provided with multiple fixing holes. The controller is connected with the
vertical acceleration sensor, the storage battery and the retractable motors, each retractable motor is connected with one end of the corresponding fixing rod, and the other end of each fixing rod corresponds to the corresponding fixing hole in the corresponding fixed rail in position. The two sides of the elevator shaft are provided with the fixed rails and the fixing rods, so that falling of the elevator can be prevented to some extent when the elevator is
overweight and descends. Meanwhile, the vertical acceleration sensor is arranged so as to precisely detect the descending speed and the ascending speed of the elevator, operation of the elevator is better detected,
operation safety of the elevator is increased, and the anti-falling protection device is worth popularization.