Considering the importance of organic manures, a novel helical wet manure distributer was developed in this study,\nthat capable to speared manure with maximum distribution width at different moisture of manure. The machine performance\nwas modeled as well. Main systems of machine were conveying system, distribution system and drawbar coupling system.\nEffect of speed of drum(450-950 rpm) and six level of particle mass of manure(5, 10, 20, 50, 80 and 100 g) on distribution\nwidth were considered. The power requirement of auger was calculated in different rotational speed of auger(90-660 rpm) and\nthree level of manure-manure friction(0.45, 0.50 and 0.55). Drawbar power of machine was evaluated as well. The results\nshowed that maximum distribution width was 14 m for mass of manure. Tractor speed was 5-10 km.hr-1 and consumed\nmanure rate was 20-60 ton.ha-1.Volume of hopper was designed for 6m3. The maximum value of PTO power requirement\nand drawbar power obtained was 28.9kW and 8.5 kW, respectively.
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