Mechanical self-locking differential teaching aid

The utility model discloses a mechanical self-locking differential teaching aid which comprises a rack, wherein a motor and a pavement simulation mechanism are connected with the rack respectively; the motor is connected with a housing of a differential via a transmission mechanism; the differential is provided with a self-locking mechanism; the two ends of the differential are connected with the rack via a right half axle and a left half axle; the right half axle is connected with a right wheel; the left half axle is connected with a left wheel; and the pavement simulation mechanism is arranged below the differential.According to the mechanical self-locking differential teaching aid, a simulation mechanism of a differential self-locking system can better reflect a self-locking principle of the mechanical self-locking differential; the pavement simulation mechanism can simulate a working process of the differential during normal motion and skid of the wheels; the problem that the existing differential cannot simulate actual motion of an actual vehicle; and the mechanical self-locking differential teaching aid is light in mass, moves conveniently, and ensures that students observe an internal structure and a motion state conveniently.