Design, fabrication and evaluation of a rear-mounted multi-purpose paddy spreader
1991
Thienchai Sundusadee (Maejo Inst. of Agricultural Technology, Chiang Mai (Thailand). Faculty of Agricultural Production. Dept. of Agronomy)
Rear-mounted paddy spreader was constructed using low cost materials from the local market. It was designed for easy operation and control during sundrying of rice and easily replaceable parts. Three sizes of paddy spreader; 1.20, 1.50 and 1.80 m width of spreader board were tested. Significant differences were noted during spreading, stirring and pling operations. Based on the results of actual testing, the 1.50 m spreader performed the three functions more satisfactorily than the others. The spreader with 1.50 m width for of the spreader board gave less percentage of slippage than the 1.80 m spreader which were spreading, 5.3 % for stirring and 39.0 % for piling operations. The 1.20 m spreader had the least percentage of slippage. Its capacity, however, was the lowest which could be due to width limitation. Drawbar power for the 1.50 m spreader was 65.7 watts, while it was 49.7 and 75.6 watts for the 1.20 and 1.80 m boards respectively. The 1.50 m spread board was matched to a 10 hp power tiller. Moisture content of the paddy was reduced from 17 percent to 14 percent (wet basis) in 3 hours and milling quality using the spreader did not give any significant difference from the traditional method. Moreover, the weight of power tiller did not give any adverse effect on the milling quality.
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