Effect of blade configuration and shaft speed on the torque and pull force characteristics of the tilling wheel of float- assisted tillers.

Date

5-2013

Degree

Bachelor of Science in Agricultural Engineering

Major Course

Major in Agricultural Power and Machinery Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Fajardo, Arthur F.

Committee Member

Suministrado, Delfin C. Paras , Fernando O. Jr.

Restrictions

Restricted: Not available to the general public and to those bound by the confidentiality agreement. Access is available only after consultation with author/thesis adviser.

Abstract

The effect of the blade configuration and shaft speed on the torque and full force characteristics of the tilling wheel of float-assisted tiller was evaluated. The highest obtained torque was 92.12Nm with no spike at 200rpm of the first pass. The lowest torque was 5.71 Nm with rectangular spike at 250rpm of the third pass. The highest obtained value of axle power was 1091.27 Watts with triangular spike at 300rpm of the third pass. The highest obtained draft force was 306.99N with no spike at 200rpm of the first pass. The highest obtained drawbar power was 139.54N with no spike at 200rpm of the first pass. The highest obtained specific energy was 54316J/m³ with no spike at 300rpm of the first pass. The lowest specific energy was 2117j/m³ with rectangular spike at 250rpm of the third pass. Overall, the highest obtained puddling index was 34 with no spike at 250rpm of the third pass. The lowest puddling index was 1.225 with triangular spike at 250rpm and of the first pass. Overall, the highest obtained performance index was 16057 with rectangular spike at 250rpm of the third pass. Shaft speed has an effect on the axle power. Using pairwise comparison (DMRT), shaft speeds 200rpm and 300rpm are significantly different. With respect to other parameters, there was no significant effect on the puddling index and drawbar power the variations of the shaft speed and blade configuration. There is a significant difference on the puddling index among the three passes. Passes had an effect on the puddling index. By using DMRT, passes 1 and 2 are different and so as passes 1 and 3. This means that considering shaft speed and the blade configurations, a third pass would not be necessary in Maahas clay.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology

Call Number

LG 993.5 2013 A2 P43

Document Type

Thesis

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