Whereas the soil for peanut planting must have the characteristics of deep plough layer,loose soil,flat ground,etc.,while the soil crushed by rotary tiller is not conducive to soil moisture conservation and the ploughing depth is only 8-15cm.In order to make the ploughed soil suitable for peanut cultivation,a 1BQ-3 power driven rake is designed.In order to improve the working stability of the harrow,the power harrow is driven by a frame type gear box multi gear mes-hing transmission mode,and the main working components include the driving harrow breaking mechanism,transmission mechanism,suppression mechanism and frame.In this paper,the kinematics and dynamics of the power rake blade are analyzed,the main factors affecting the cutting resistance of the rake blade are explored,the sliding cutting angle of the rake blade is determined to be 30°,and the key components such as the power rake blade are emphatically designed.Through finite element analysis,the maximum stress,displacement and average deformation of the dynamic rake blade are obtained.The field experiment was conducted in Jiaozhou Experimental Base of Qingdao Agricultural University.The re-sults showed that when the forward speed was 2m/s and the speed of the rake blade was 300r/min,the soil breaking rate of the rake blade was 91.78%,and the average tillage depth was 26.3cm,which could meet the agronomic requirements of peanut preparation depth of more than 25cm,as well as the national standards and peanut planting requirements.
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万方数据