Adaptive gear ratio antisliding differential mechanism

A self-adapted variation ratio antiskid differential device is composed of a differential device shell, four planet gears, two half axle gears and a cruciform planet gear shaft. The device is characterized in that the differential can automatically control the torque assignment according to the rotational speed of the left and right wheels; the velocity ratio between the planet gear and the half axle gears satisfies the formula: i =(d Psi / d Psi )=(Z / Z ) (1-csin ( n Psi ), among which the Phi , the Phi are respectively the rotation angle of the planet gear and the half axle gear. Z , z are respectively the teeth number of the planet gear and the half axle gear, c is the constant, n is the planet gear each transmission ratio change cycle. The utility model breaks through the gear monocycle limit of the transmission ratio change cycle, establishes the velocity ratio change rule in the planet gear entire circle, then by this way, the device can enhance the change in value scope greatly, improve the locking coefficient of the differential device, simultaneously reduce the pulsation and the impact, achieve the request on autocross and skid resistant, which is especially suitable for the cross-country vehicle, the dump truck, the wheeled car loader, the bulldozer and each kind of wheeled machinery etc.