Rolling resistance of tractors

Rolling resistance. The rolling resistance of the tractor is mainly due to the deformation of the tire and the soil, and under the weight of the tractor, the tire is flattened and the soil is compacted. During the rolling process of the wheel, the tire is flattened and deformed along the various parts of the ground in the direction of the circle, and the soil raised in front of the wheel is pressed down to deform the soil and form a wheel rut, which creates a rolling resistance that prevents the wheel from rolling forward. There are many factors that affect rolling resistance, mainly related to factors such as the solidity of the ground and the size of the vertical load on the degree of moisture. For the same tractor, if the ground conditions are different, its rolling resistance is also different, such as in asphalt and cement or dry hard ground driving rolling resistance is small, the tractor traction is large, under the same conditions of use, if the weight added to the tire is larger, the greater the deformation of the soil in the vertical direction, the greater the rolling resistance. Generally speaking, reducing the deformation of the tire itself and the deformation of the vertical direction of the soil is conducive to reducing the rolling resistance. If the tractor is driving on soft ground, using low-pressure tires and increasing the tire support area, the deformation of the soil in the vertical direction can be reduced, the rolling resistance can be reduced, and the traction is improved. Since the tractor is mainly used for field work, mostly driving on soft ground, in order to reduce the deformation of the soil in the vertical direction, the lowest pressure tire used in the tractor is the same reason. In our operation, we should pay attention to the difference in the use of low-pressure tires, widening tires and high-pressure tires.