| Subsoiler as the main agricultural operation equipments in the north of China, is very important to its main parts, including the reasonable design and further study of shovel handles, which can lay a solid foundation to its implementation of the protective cultivation in the northeast. The emergence of conservation tillage technology attributes to the strengthen realization to the ecological environment and the real pressure, the deterioration of ecological environment people faced, subsoiler, as protective cultivation which is one of the four technology (No-till planting technology, Plant diseases and insect pests and weeds control and prevention and control technology, Straw residues surface coverage technology, subsoiling technology) receiving more and more attention. The development of multi-function subsoiler and components which not only can replace Share plough and Grubbing machine gradually, but also can improve under the soil structure, activate the plough ground floor, enhance the soil water conservation and crop drought, lodging-resistance ability, reducing the pollution of the environment, so as to realize the sustainable development of agriculture.This paper mainly expounds that the subsoiler types and the subsoiler research status at home and abroad, the principle of subsoiling and the existing problems of subsoiler at present, then have designed extroverted arc subsoiler, and made the test of field and soil-bin. We need ANSYS software analyzed force condition to the extroverted arc subsoiler. In this paper, the design of the national standard extroverted arc subsoiler was optimized, the design concept of the extroverted arc subsoiler was proposed. The national standard subsoiler was a arc shovel with sweep angle of0°(α=0°).When α>0°, the arc part can rise to pressure on soil and lift the soil, so as to reduce the energy consumption and achieve the better subsoiling effects. We designed7arc subsoilers according to different sweep angle. Then the subsoilers in under the action of the traction by level resistance and the vertical resistance were tested through the test indoor soil-bin test. Contrasted with field experiment measured mechanical parameters, we obtained optimization subsoiler. Finally, it was made an analysis on subsoiler by finite element analysis software. So it can more intuitive observed the working conditions and stress conditions of the subsoiler during operations. The final purpose of the design of the extroverted arc subsoiler is to save subsoiling operation resistance, improving the effect of subsoiling and the production efficiency.The conclusion of this paper are as follows:1.The design idea of extroverted arc subsoiler was put forward. It can Shows that its design rationality.2.7subsoilers was designed according to the different sweep angles, and made the soil-bin test, the results show that the resistance was the most low when the sweep angle of extroverted arc subsoiler at30°≤α≤60°3. The field test has been done, and analysis on data measured. It obtained that the resistance was the most low when the sweep angle of extroverted arc subsoiler at α=50°.The result was similar to the result from soil-bin test. At last, it obtained the optimal shape of extroverted arc subsoiler.4. The sweep angle α=50°of extroverted arc subsoiler was analysis on by ANSYS software. It was consistent when the horizontal resistance and vertical resistance was measured between field test and soil-bin test, and got the force condition of extroverted arc subsoiler, and confirmed that it is reasonable structure when the sweep angle α=50°. |
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