Agricultural Engineering, Volume 47


Aliya Kalkabayeva, Mizambek Zhetpeysov, Dainius Steponavičius
Kazakh National Agrarian University; Aleksandras Stulginskis University


Uneven distribution of rice mass fed into a threshing apparatus is one of the main causes of downgraded performance of a combine harvester during rice harvesting. One of the possible solutions is fitting V-shaped corrugation profiles at varying intervals on the bottom of the feederhouse. Intervals between the corrugations are smaller at the entry part of the feederhouse than at the end. This ensures smoother and more even distribution of flow of high-yield (above 5 t/ha), higher humidity (over 30%) and entangled biomass of rice along the width of feederhouse and, consequently, along the width of threshing apparatus.

Our studies have shown that the levelling ratio depends on the amount of the rice mass fed into the feederhouse. The presented dependences support the sensitivity of the levelling tool to overloads. For example, increasing the feed rate of rice biomass from 3.4 kg/s to 5.5 kg/s results in the increase of the levelling ratio from 43% to 67%, where the levelling tool is not used; and from 62% to 75%, where the work tool is used. The levelling ratio is also influenced by physical-mechanical properties of rice, as well as its humidity. In case of increase of humidity from 20% to 55%, i.e. 2.8 times, the levelling ratio has increased from 53% to 70%, or 1.3 times, where the levelling tool has been used; and from 42% to 54%, or 1.2 times, where the levelling tool is not used. The levelling ratio of rice mass is considerably less dependent on humidity than on the feed rate.

Keyword(s): Combine harvester, rice, feederhouse, harvesting method, corrugations.


Klenin N.I. Energy and power parameters of threshing-separation units by unequal feed rate of crops. Current issues of agriculture. Moscow. 1997, с. 27–31. (In Russian).

Penkin M.G., Golikov V.A., Ifraimov D.N. The dependence of the uniformity of feed rate to the threshing apparatus on grain loss. Mechanization and electrification of soc. agriculture. Nr. 3, p. 38–39. (In Russian).

Portnov M.N. About profession combiner. Moscow: Agropromizdat. 1988. – 88 p. (In Russian).

Pugachev A.N. Reliable barrier to grain loss. Moscow: Kolos, 1981. – 15 c. (In Russian).

Sadykov Z.S., Zhetpeisov M.T., Oralbaev S. Mathematical simulation of the process of levelling of rice biomass during harvesting. Specialists in engineering – the foundation of scientific-technological progress in agriculture: materials of the scientific-practical conference. Almaty. 2009, part 2, p. 75–78. (In Russian).

Špokas L., Steponavičius D. Impact of wheat stubble height on combine technological parameters. Journal of Food, Agriculture & Environmental. 2010. Vol. 8, Nr. 2, p. 464–468.

Steponavičius D., Petkevičius S., Domeika R. Determination of rational values of inclination angles of straw walker sections. Engineering for Rural Development: proceedings of the 10th international scientific conference. Jelgava, Latvia, 26–27th of May. 2011. Vol. 10, p. 76–81.

Taylor R.K., Hobby H.M., Schrock M.D. Evaluation of an automatic federate control system for a grain combine. ASAE Meeting Paper 051134. 2005.

Umbetaliev N.A., Zhetpeisov M.T. et al. Friction ratio of rice biomass in combine harvester. Innovative ways of development of forest economy highly protected natural territories and related agricultural and industrial fields in the context of market economy: materials of the scientific-practical conference. Almaty. 2010, p. 172–175. (In Russian).

Zhalnin E.V., Savchenko A.I. Technology of combine harvester-assisted harvesting. Moscow: Rosselhozizdat. 1985. – 205 c. (In Russian).

Zhetpeisov M.T. Optimisation of a work tool for levelling a rice mass layer in a feederhouse of a combine harvester. Doctoral dissertation in technical sciences. Almaty. 2010. – 133 p. (In Russian).

Zhetpeisov M.T. Towards validation of loss-free rice harvesting technologies. Current issues of education and science of agriculture: international scientific-practical conference: Bulletin of the Kyrgyz Agrarian University. Bishkek. 2006, p. 59–62. (In Russian).

Zhong, T., Yaoming, L., Chenghong, W. Experiments on variable-mass threshing of rice in the tangential-longitudinal-flow combine harvester. Journal of Agricultural Science and Technology. 2013. Vol. 15, p. 1319–1334.

Zubkov V.I. Basics of the mechanic the medium of discrete particles. Rostov na Donu: DGTU, 1996. – 167 p. (In Russian).

OST 70.8.1-81. Testing of agricultural machinery. Machine harvesting. Program and test methods.

GOST 20915-75. Agricultural machinery. Methods for determination of test conditions.

Full Text: PDF


  • There are currently no refbacks.

Agricultural Engineering ISSN 1392-1134 / eISSN 2345-0371

This journal is published under the terms of the Creative Commons Attribution-Noncommercial 3.0 Unported License. Responsible editor: Dr A. Žunda.