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The Study on Factors Affecting Performance of a Single Shank Vibrating Subsoiler |
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| รหัสดีโอไอ | |
| Creator | 1. Tinnasit Kaisinburasak 2. Chaiyakorn Jansuwan |
| Title | The Study on Factors Affecting Performance of a Single Shank Vibrating Subsoiler |
| Contributor | Department of Agriculture |
| Publisher | Department of Agriculture |
| Publication Year | 2560 |
| Journal Title | THAI AGRICULTURAL RESEARCH JOURNAL |
| Journal Vol. | 35 |
| Journal No. | 2 |
| Page no. | 176-196 |
| Keyword | Hardpan, Single Shank Vibrating Subsoiler,Hydrostatic power transmission system |
| URL Website | http://at.doa.go.th/journal |
| Website title | THAI AGRICULTURAL RESEARCH JOURNAL |
| ISSN | 1258389 |
| Abstract | A Single Shank Vibrating Subsoiler using the hydrostatic system was built for thereduction of vibration which caused rider's discomfort and premature failures of tractor'scomponents. It consists of one blades attached to an unbalanced mass shaft which wasdriven by hydraulic motor. The system was powered by a PTO shaft of a 50 hp tractor.The experiments were conducted in sandy clay loam soil of 20.60% (db) moisturecontent, 1.66 g/cm3 dry bulk density and 2.58 MPa cone penetration resistance at twoforward speeds (1.39 and 2.09 km/h), four oscillatory frequencies (0, 7, 9 and 11 Hz), twotillage depths (30 and 40 cm) and a constant oscillatory amplitude of 36.5 mm.Comparing between the oscillatory and non-oscillatory modes, it was found that theoscillatory mode gave a maximum reduction of draft force by 32.69% at 11 Hz oscillatoryfrequency 2.09 km/h forward speed and 30 cm tillage depth. However, the oscillatorymode resulted to 120.55% increase in total power, 19.77% reduction in soil disturbanceand 21.99% reduction in dry bulk density. Draft force, total power and soil disturbanceincreased with increase of forward speed and tillage depth. As a conclusion, the forwardspeed, oscillatory frequency and tillage depth significantly affected the draft force, totalpower and soil disturbance. The tractor seat vibration was reduced by 32.14% - 34.22% atthe same of forward speed, oscillatory frequency and tillage depth in the hydrostaticpower transmission system as compared to the mechanical transmission one. Theoptimum operating parameters were evaluated by means of questionnaire. The relativeimportance of parameters was first determined and later used to calculate the weightedarithmetic mean of user satisfactory index. The maximum value was found to be 3.372which corresponded to 2.09 km/h forward speed, 30 cm tillage depth and 9 Hz oscillatory frequency. |
