The triangular track chassis walking mechanism is widely used in field work vehicles such as construction machinery and tractors. The walking conditions are harsh, requiring the walking mechanism to have sufficient strength and stiffness, as well as good walking and turning capabilities. The tracks are in contact with the ground, and the drive wheels are not in contact with the ground. When the motor drives the drive wheel to rotate, the drive wheel continuously rolls up the track from the rear through the meshing between the teeth on the drive wheel and the track chain under the action of the reducer driving torque. The grounded part of the track exerts a backward force on the ground, and the ground correspondingly exerts a forward reaction force on the track, which is the driving force that drives the machine forward.