(1) Locking mechanism installed on the center differential of four-wheel drive vehicle. Its function is to improve the passing capacity of the car on bad roads, that is, when one drive axle of the car is idling, it can quickly lock the differential and make the two drive axles rigidly connected.
(2) This can transfer most or even all of the torque to the anti-skid drive axle, and make full use of its adhesion to generate enough traction, so that the car can continue driving.
Classification of central locking device:
(1) Different differentials adopt different locking methods, and now the common differential locks,
(2) There are roughly the following locking methods: forced locking, high-friction self-locking, tooth-embedded, torsional and viscous coupling. Among them, the jaw is often used for medium and heavy trucks.