Soil breakage under winged subsoilers
2002
Anudtara Jumlongkul(Rajamangala Institute of Technology, Pathum Thani (Thailand). Faculty of Engineering and Agricultural Technology) | Roongruang Kalsirisilp(Rajamangala Institute of Technology, Pathum Thani (Thailand). Faculty of Engineering and Agricultural Technology)
This study aimed to examine soil breakage under winged subsoilers. It was conducted in a laboratory soil bin of 17.4 square m. The depth of ploughing was 22 cm and the average speed of soil bin carriage tester was 0.66 m/s. The soil parameters were moisture content of 22 percent (db), soil internal friction angle of 27 deg and soil cohesion force of 8,092.48 N/square m. Two machines were compared the subsoiler equipped with and without wing. At the rake angle of 45 deg, the results showed that wheel slip, resultant force and soil breakage of the non-winged subsoiler were 19.40 percent, 3,195.89 N and 7,311.70 square cm respetively. For winged subsoiler, the corresponding figures were 28.35, 6,337.24 N and 12,509 square cm respectively. At the rake angle of 90 deg, the results showed that wheel slip, resultant force and soil breakage of the non-winged subsoiler were 16.91 percent, 5,020.86 N and 5,949 square cm respectively. For winged subsoiler, the corresponding figures were 20 percent, 9,077.33 N and 9,077.30 square cm respectively. In conclusion, the percent of soil breakage under winged subsoiler was 71.08 percent which was higher than that of the non-winged subsoiler at the rake angle of 45 deg and the corresponding figure was 52.58 percent at the rake angle of 90 deg.
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