What is the difference between tracked tractors and wheeled tractors?

Tracked tractors are different from wheeled tractors in that they are supported on the ground by a coiled circular track.
The track is in contact with the ground, and the spike is inserted into the soil, but the driver is not grounded. Under the action of driving torque, the driving wheel continuously rolls up the track from the rear through the meshing between the teeth on the driving wheel and the track shoe joint pin.
The driving force of a wheeled tractor is directly transmitted to the walking wheels, while a tracked tractor is different in that its driving force Pk is transmitted to the axle of the driving wheel through the track wound on the driving wheel, and then transmitted to the driving wheel through the tractor body.