Evaluation of the Performance of a Combined Tillage Implement with Plough and Rotary Tiller by Experiment and DEM Simulation

In order to improve the performance of tillage tool for straw incorporation in silty clay loam, a combined tillage implement with plough and rotary tiller was designed. Its performance on straw incorporation and power consumption was investigated, and the combined tillage types (CTSR and CTDR) were compared with traditional tillage types including a sole plough type (SP and DP), a sole rotary tiller (RT), and a two-pass tillage type (SP+RT and DP+RT) in a rice field experiment. The effect of the forward speed and rotary speed for RT and CTSR were studied by DEM simulation. The ratio of straw coverage by CTSR and CTDR increased nearly 20% compared with RT, and the stability coefficient of tillage depth and CV of the surface evenness after tillage also improved in the field experiment. The total power of CTSR and CTDR was less than that of RT and two-pass tillage types by measurement. DEM simulation indicated that the total power of CTSR increased with the increase of the forward speed and rotary speed, and the reduction of the rotary power for the combined tillage implement can be obtained at a relatively high rotary speed. The combined tillage implement improved the performance on straw incorporation and had an advantage on power consumption at some operational conditions.

[1]  Woong-Ki Park,et al.  Strip tillage characteristics of rotary tiller blades for use in a dryland direct rice seeder , 2003 .

[2]  John M. Fielke,et al.  Torque and energy characteristics for strip-tillage cultivation when cutting furrows using three designs of rotary blade , 2015 .

[3]  C. Saunders,et al.  Simulation of tillage forces and furrow profile during soil-mouldboard plough interaction using discrete element modelling , 2020 .

[4]  Sang-Heon Lee,et al.  Analyzing the mixing performance of a rotary spader using digital image processing and discrete element modelling (DEM) , 2018, Comput. Electron. Agric..

[5]  I. Ahmadi.  A power estimator for an integrated active-passive tillage machine using the laws of classical mechanics , 2017 .

[6]  K. Kendall,et al.  Surface energy and the contact of elastic solids , 1971, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[7]  Jun Du,et al.  An Investigation of the Performance of Waterjet for Lotus Root Digging Device: Simulation and Experiment , 2020 .

[8]  H. Raheman,et al.  Performance of combined offset disc harrow (front active and rear passive set configuration) in soil bin , 2018, Journal of Terramechanics.

[9]  Surendra Singh,et al.  Optimization and evaluation of rotary tiller blades: computer solution of mathematical relations. , 2009 .

[10]  David A. Lobb,et al.  EFFECTS OF SIX TILLAGE METHODS ON RESIDUE INCORPORATION AND CROP PERFORMANCE IN A HEAVY CLAY SOIL , 2004 .

[11]  John M. Fielke,et al.  Furrow parameters in rotary strip-tillage: Effect of blade geometry and rotary speed , 2014 .

[12]  V. S. Saimbhi,et al.  Development of a rotary tiller blade using three-dimensional computer graphics , 2004 .

[13]  Itzhak Shmulevich,et al.  State of the art modeling of soil–tillage interaction using discrete element method , 2010 .

[14]  Prathuang Usaborisut,et al.  Performance of combined tillage tool operating under four different linkage configurations , 2018, Soil and Tillage Research.

[15]  Z. Hua,et al.  Evaluation of straw spatial distribution after straw incorporation into soil for different tillage tools , 2020 .

[16]  J. Fielke,et al.  Strip-tillage using rotating straight blades: Effect of cutting edge geometry on furrow parameters , 2016 .

[17]  C. J. Coetzee,et al.  Review: Calibration of the discrete element method , 2017 .

[19]  H. Raheman,et al.  Effect of velocity ratio on performance characteristics of an active-passive combination tillage implement , 2020 .

[20]  Wei Chen,et al.  Soil-cutting simulation and parameter optimization of handheld tiller's rotary blade by Smoothed Particle Hydrodynamics modelling and Taguchi method , 2018 .