Influence of tire internal pressure on soil compaction

Abstract

The article presents the results of choosing tires for driving wheels of cotton-growing row-crop tractors during inter-row cultivation. The track surfaces of tires 15.5-38, 16.9R38, 420/85R38 and 18.4R38 are compared on a rigid base. The track surfaces for hard base and maximum pressure of tires on soil, soil density and tire tread depth were determined in experimental studies. When choosing tires, their average qav and maximum q max pressures on soil were determined. In order to reduce compaction impact of the tractor’s undercarriages on soil, impact force of the tire internal pressure and vertical load on soil are determined. When using with larger profile width of tires working between rows leads to crushing of seedlings, and the smaller profile leads to an increase in compaction effect on soil. By choosing the right tires and substantiating their parameters, the beneficial living organisms that increase soil fertility are not allowed to die. The tractor equipped with 18.4R38 tires was used with a wide width agricultural machinery in cotton field. As a result, the number of field crossings of the aggregate reduced by 1.87 times, soil compaction is prevented, and fuel consumption reduced by 25%.