| Design and experiment of the surveying and mapping device for the movement characteristics of corn stubble cutting with disc cutting knife |
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| DOI：10.7606/j.issn.1000-7601.2017.05.40 |
| Key Words: no-till Planter disc cutting knife cloud curve test device motion track |
| Author Name | Affiliation | | LIN Jing | College of Engineering, Shenyang Agricultural University, Shenyang, Liaoning 110161, China | | MA Tie | College of Engineering, Shenyang Agricultural University, Shenyang, Liaoning 110161, China | | LU Ze-cheng | College of Engineering, Shenyang Agricultural University, Shenyang, Liaoning 110161, China | | LI Bao-fa | College of Engineering, Shenyang Agricultural University, Shenyang, Liaoning 110161, China | | SONG Jian-peng | College of Engineering, Shenyang Agricultural University, Shenyang, Liaoning 110161, China | | LV Qiu-li | College of Engineering, Shenyang Agricultural University, Shenyang, Liaoning 110161, China |
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| Abstract: |
| No-till planter is one of the key equipment of conservation tillage, the seeding quality greatly affect the development of conservation tillage. In order to optimize key components of no-till planter, we developed a disc stubble knife cutting corn rootstalk motion characteristics testing device. The device can realize real-time mapping of disc coulter work when measured point trajectories. Through the mapping and test on the three kinds of disc stubble knife trajectory, inferred that the movement track of smooth disc broken stubble knife's stay measuring points was smooth cycloid, the movement track of semicircular type gap disc and Archimedes spiral disc's stay measuring points was cloud curves by different length of arc. Based on the above mention, make the kinematic analysis on three disc cutting knives, impact situation, buried slip angle and cutting speed changes were respectively analyzed and compared. To establish a stubble breaking cutter cutting stubble movement kinematics model with Archimedes spiral disc type. Depict the Archimedes spiral disc broken stubble blade mouth point trajectory was composed of different length of the are cloud curve and to establish a broken stubble blade mouth point equations of motion with Archimedes spiral disc type. Found the track of the knife-edge points on linear Archimedes screw disc stubble has the cycloidal law on the smooth disc stubble knife, but also has the impact on the semi-circular notch disc stubble knife, and the sliding cutting angle bigger, sliding cut performance better. Through the disc break stubble cutter cutting corn root stubble motion characteristics testing device of 2 factors 3 levels orthogonal test analysis, that Archimedes spiral disc type stubble breaking cutter, machine counterweight to 100 kg breaking stubble is best, stubble breaking rate is high. |
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