Dynamic Indicators of a Corn Ear Threshing Process Influenced by the Threshing-Separation Unit Load

  • Aurelija KEMZŪRAITĖ Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
  • Albinas ANDRIUŠIS Aleksandras Stulginskis University, Studentų 15, 53362 Akademija, Kaunas distr., Lithuania
  • Valdas KINIULIS Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
  • Dainius STEPONAVIČIUS Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
  • Darius JUKNEVIČIUS Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
Keywords: corn, feed rate, resistance torque, threshing cylinder, filler plate, concave

Abstract

Corn ear feed rate variations in the threshing-separation unit of a combine harvester have a significant impact on the dynamic indicators of the threshing process. In this study, we conducted experiments using a stationary tangential threshing device and measured the forces acting on the rear part of the concave as well as the torque of the rotating cylinder during a threshing process. The ThreshLab software was developed for this purpose. We found that increasing the corn ear feed rate made the threshing process more even, due to decreasing the fluctuation of forces acting on the rear part of the concave and torque of the rotating cylinder. The corn ear threshing process may be more stable if the threshing cylinder is fitted with filler plates (FP-II). A comparison of the results obtained for variations in the forces acting on the rear part of the concave with those obtained for variations in the total torque of resistance and the speed of the threshing cylinder revealed a linear correlation between these parameters at varied feed rates.

DOI: http://dx.doi.org/10.5755/j01.mech.24.4.20721

Author Biographies

Aurelija KEMZŪRAITĖ, Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
Institute of Agricultural Engineering and Safety
Albinas ANDRIUŠIS, Aleksandras Stulginskis University, Studentų 15, 53362 Akademija, Kaunas distr., Lithuania
Institute of Power and Transport Machinery Engineering
Valdas KINIULIS, Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
Institute of Agricultural Engineering and Safety
Dainius STEPONAVIČIUS, Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
Institute of Agricultural Engineering and Safety
Darius JUKNEVIČIUS, Aleksandras Stulginskis University, Studentų 15A, 53362 Akademija, Kaunas distr., Lithuania
Institute of Agricultural Engineering and Safety
Published
2018-09-06
Section
DYNAMICS OF MECHANICAL SYSTEMS