Design and Test of Subsoiling Rotary Rilling and Rilling Combined Operating Machine

LIN Jing, ZHANG Tongjia, CHEN Bin, HAN Wei, Lü Qiuli, WANG Jiaqi

Abstract

In view of the low annual precipitation of cinnamon soil in the west of Liaoning Province, the large amount of evaporation, serious soil drought and serious impact on crop yield, a smashing and slashing ridge hoisting machine was designed and studied, which mainly consisted of deep loosening device, smashing and slashing device, ridge device and pressure device. The machine can complete a number of operations such as deep loosening, smashing, rotary tilling, ridge ridges, etc., which can reduce the number of grounding, improve work efficiency, and meet the operation requirements of furrow-ridge and ridge interchange in the brown soil area of Western Liaoning. The kinetic analysis of smashing device of the key components was determined as the rotating radius was 300mm, the depth of grounding device was 8cm, and the minimum speed n was 210r/min. According to the geometric element method design principle of the plow surface, the element angle θ was changed according to the parabola law, the ridge shovel working surface was drawn, and the structural parameters of the ridge device were determined. The wood block experiment of simulating the movement of soil particles through the soil trough showed that the performance of the curved wedge type soil cultivator was better than that of the plane wedge type cultivator, and the ridge and furrow ditches were realized. Through the three factors and five levels test, the main factors affecting the maximum ridge height of the test indicators were the advancement speed of the machine, working depth and straw coverage;the main order of influence of each factor on the working resistance was straw coverage, working depth and the speed of machine. The Design-Expert software was used to solve the working parameters of the machine, and the actual work verified the best operating parameters as follows: the machine forward speed of 6km/h, working depth of 22.2cm, maximum distance of cast soil of 24.05cm, and working resistance of 12.08kN. It satisfied the technical requirements for the construction of reasonable soil layering for the intercropping of ridges and ridges in the brown soil area of western Liaoning Province, and provided reference for the reformation and evaluation of the combined soil preparation machine.


Keywords: stubble-killing and deep-loosening ridging machine, template curve, element line angle, orthogonal test

 

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