Ensuring the reliability of adjusting the clearance of a four-wheel tractor

Abstract In cotton growing, three-wheeled tractors are used for inter-row processing of cotton. Despite good agrotechnical permeability, they have significant specific disadvantages associated with low resistance, the impossibility of using them for transport work and, most importantly, a negative technogenic impact on the soil. To eliminate these shortcomings of a three-wheeled tractor, “DTCAE LLC” developed a design for a four-wheeled tractor with adjustable ground clearance. Clearance adjustment, which is carried out by a screw mechanism, selected in such a way that the force of the operator would be sufficient to create a torque to drive it, but at the same time there would be no spontaneous rotation of the screw under the influence of axial force arising from the gravity of the tractor. The article presents a method for calculating the parameters of a screw-nut pair, which excludes spontaneous rotation of the screw under the influence of axial force arising from the gravity of the tractor and thereby ensures the reliability of the screw mechanism for adjusting the tractor clearance.

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