| Experiment and analysis of the subsoiler tine shape to the soil disturbance process and effect |
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| DOI：10.7606/j.issn.1000-7601.2017.03.44 |
| Key Words: subsoiler subsoiler tine shape soil disturbance high-speed photography experimental research |
| Author Name | Affiliation | | HANG Cheng-guang | College of Mechanical and Electric Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | HUANG Yu-xiang | College of Mechanical and Electric Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
2.Shaanxi Engineering Research center for Agricultural Equipment, Yangling, Shaanxi 712100, China | | GAO Xi-jie | College of Mechanical and Electric Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | LI Wei | College of Mechanical and Electric Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | ZHU Rui-xiang | College of Mechanical and Electric Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China
2.Shaanxi Engineering Research center for Agricultural Equipment, Yangling, Shaanxi 712100, China |
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| Abstract: |
| Tine shape is one of the key components of subsoiler, and it has an important impact on soil disturbance. Based on the influence mechanism to analyze the tine shape to soil disturbance process, taking the chisel shovel, arrow shovel and wing shovel as the objects, using evaluation indexes such as soil breaking rate, soil bulkiness and loose degree, soil disturbance coefficient and soil surface roughness, and the high-speed photographic technique further researched the influence of different shovel shapes on the soil disturbance process and effect. The results were indicated: (1) The shovel shape would produced an important impact to the soil disturbance process, the furrow surface width and furrow bottom width were the highest when operated by the wing shovel, the arrow shovel was the second, and the chisel shovel was the minimun. (2) With increasing contact area of subsoiler shovel to soil and second contact probability between soil blocks, the soil crushing effect was continuously improved. Aftersubsoiling by using the chisel shovel, arrow shovel and wing shovel, soil breaking rate in 10 cm topsoil was 89.29%, 90.87% and 94.75% respectively, and soil breaking rate in whole topsoil was 85.09%, 92.23% and 96.13% separately. (3) The shovel shape was the important factor to influence soil loosening degree and soil surface roughness. The soil loose effect by chisel shovel was less than arrow shovel and wing shovel, but its soil surface roughness was better than arrow shovel and wing shovel. Comprehensively considered the factors as tillage quality, drag reduction effect, material and so on, the contact area of shovel tine to soil should be rationally confirmed, adaptable research of shovel to soil types should be enhanced, and the research of reasonable layout and its structure parameters of wing shovel should be strengthened. |
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