Influence of the Plough with Tekrone Mouldboards and Landsides on Ploughing Parameters

Abstract

This paper is dedicated to Tekrone composite material utilization in agricultural machinery. In terms of its technical properties, tekrone is very similar to steel 60 that is used for production of plough mouldboards and landsides. However, Tekrone shows more preferable characteristics, because its friction coefficient (kf) is 2.6 times lower in contrast to steel 60. This fact indicates that the draft resistance can be decreased by replacing the plough mouldboards and landsides made of steel 60 with their counterparts made of Tekrone. This science hypothesis was confirmed by experimental investigation results. Analyses showed that utilization of plough with Tekrone mouldboards and landsides instead of steel ones significantly reduces their sticking to the wet soil. This results in a “soil moves over plough mouldboard surface” process instead of a “soil moves over soil” process. The plough draft resistance was decreased by 13.6% after replacement of the steel equipment with Tekrone one. Simultaneously, the performance of new tractor-plough aggregate was increased by 12.6%, the specific fuel consumption was reduced by 11.8%, and the preserving probability of the agrotechnological ploughing depth tolerance (±2 cm) was increased from 88% to 93%.

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“…where φ уd -longitudinal coefficient of traction at full slip, N ek -vertical operating load, which acts on the wheel of the bridge machine. From tractor theory, it is known that the maximum tangential traction force that a tractor wheel develops can be determined from the expression (Nadykto et al, 2020):…”

“…where δ max -slip ratio (maximum) of the axle machine wheels, S k -sum of the vertical projections of the bearing surfaces of the wheel sprocket submerged in the soil, k 0sum of the vertical projections of the bearing surfaces of the wheel sprocket submerged in the soil, L -is the length of the arc of traction of the wheel hitches with the bearing surface (the trace of the permanent tramline), the value of which find from the expression (Nadykto et al, 2020):…”

Analytical study of the turns of bridge machines

“…A different combination of geometric (10) and kinematic equations (12)(13)(14)(15) allows for a description of restrictions imposed by the design scheme of the bridge vehicle (number of propulsor supports, mutual arrangement, steering scheme, base, and track) and control system on its curvilinear motion parameters. As a result of solving the system of equations ( 9) considering the unknowns х т , у т , α and the coordinates of the instantaneous velocity centre (x ij , y ij ), all force and kinematic characteristics of curvilinear motion of the bridge machine were acquired, namely angular velocity, trajectory of motion, longitudinal and transverse components of the velocity of the centre of mass, actual turning radius, normal acceleration, traction forces and slipping on the leading supports, distribution of normal reactions on the supports, power losses and their change in time, depending on the control parameters.…”

“…The unknowns are the coordinates of the centre of rotation in the machine system of its angle speed y 0 , its angle speed ω and the coordinates of the instantaneous velocity centre х ij , y ij . The stationary rotation model is a system of 2nm coupling equations (10)(11)(12)(13)(14)(15) and three equations of motion:…”

Experimental Investigation of Plow-Chopping Unit

“…Simultaneously, it is more efficient to completely place these residues in an anaerobic environment (i.e., deep). Conventional plows are known as the best for this task [20]. A unique effect occurs when using two-deck ploughs [21].…”