Published
Mathematically modelling the power requirement for a vertical shaft mowing machine
Modelo matemático para la demanda de potencia de un aparato de corte de eje vertical para trituración de rastrojos
DOI:
https://doi.org/10.15446/ing.investig.v28n3.15130Keywords:
agricultural machinery, mechanisation, agricultural engineering, energy (en)maquinaria agrícola, mecanización, ingeniería agrícola, energía (es)
Downloads
This work describes a mathematical model for determining the power demand for a vertical shaft mowing machine, particularly taking into account the influence of speed on cutting power, which is different from that of other models of mowers. The influence of the apparatus’ rotation and translation speeds was simulated in determining power demand. The results showed that no changes in cutting power were produced by varying the knives’ angular speed (if translation speed was constant), while cutting power became increased if translation speed was increased. Variations in angular speed, however, influenced other parameters determining total power demand. Determining this vertical shaft mower’s cutting pattern led to obtaining good crop stubble quality at the mower’s lower rotation speed, hence reducing total energy requirements.
En el presente trabajo se desarrolla un modelo matemático para la determinación de la demanda de potencia del órgano de corte de una trituradora de eje vertical, considerando la particular influencia del régimen cinemático en la potencia de corte, que se diferencia de otros modelos de trituradoras. Se simula la influencia de las velocidades de rotación y de traslación del órgano de corte en la demanda de potencia. Los resultados demuestran que, si la velocidad de traslación permanece constante, con la variación de la velocidad angular de las cuchillas no se producen cambios en la potencia de corte, pero sí en el resto de los términos que determinan la demanda total de potencia. Al aumentar la velocidad de traslación la demanda de potencia crece. Este comportamiento de la trituradora de eje vertical permite lograr una adecuada calidad en la trituración de los rastrojos con menor velocidad angular del órgano de corte, disminuyendo la demanda de energía de la demolición de rastrojos.
References
Chattopadhyay, P. S., Pandey, K. P., Effect of knife and operational parameters on energy requirement in flail forage harvesting., J. Agric. Engng Res., Vol. 73, 1999, pp. 3-12.
Chattopadhyay, P. S., Pandey, K P., Influence of knife configuration and tip speed on conveyance in flail forage harvesting., J. Agri. Engng Res., Vol. 78, No. 3, 2001, pp. 245-252.
Hegg, R., Sustainable and environmental engineering., En: Stout, B.A., et al. CIGR Handbook of agricultural engineering. Vol. III. Plant production engineering, 1999, pp. 585-598.
Levien, R., Furlani, C. E. A., Siqueira, R., Gamero, C. A., A. Desempenho de um triturador de palhas tratorizado em resíduos culturais de milho (Zea mays L)., En: Congreso Latinoamericano de Ingeniería Agrícola, La Plata, Argentina, 1998.
Metwalli, M. M., Helmy, M. A., Gomaa, S. M., Khateeb, H. A., Evaluation of different mechanical methods of cutting and chopping cotton stalks., Misr. J. Ag. Eng., Vol. 12, No. 1, 1995, pp. 205-217.
Moore Almeida, E., Benez, S. H. Roçadora: desempenho em função da velocidade de deslocamento e da rotação do rotor em terreno ondulado., Energia na Agricultura. Vol. 12, No. 1, 1997, pp. 13-27.
Morad, M. M., Optimizing the rotary mower kinematic parameter for minimum mowing cost., Misr. J. Ag. Eng., Vol. 12, No. 2, 1995, pp. 353-363.
Pérez de Corcho-Fuentes, J. S., Fundamentación de los parámetros constructivos y cinemáticos del órgano de corte para la trituración de rastrojos de piña., Tesis presentada en opción al grado científico de Doctor en Ciencias Técnicas Agropecuarias, Centro de Mecanización Agropecuaria, Universidad Agraria de La Habana, Cuba, 2006, pp. 149.
Srivastava, A. K., Goering, C. E., Rohrbach, R. P., Engineering principles of agricultural machines., (ASAE textbook; no. 6). St. Joseph, Mich.: American Society of Agricultural Engineers, 1993, pp. 601.
Dimensions
PlumX
Article abstract page views
Downloads
How to Cite
License
Copyright (c) 2008 Jorge Simón Pérez de Corcho Fuentes, Francesco Garbati Pegna
This work is licensed under a Creative Commons Attribution 4.0 International License.
The authors or holders of the copyright for each article hereby confer exclusive, limited and free authorization on the Universidad Nacional de Colombia's journal Ingeniería e Investigación concerning the aforementioned article which, once it has been evaluated and approved, will be submitted for publication, in line with the following items:
1. The version which has been corrected according to the evaluators' suggestions will be remitted and it will be made clear whether the aforementioned article is an unedited document regarding which the rights to be authorized are held and total responsibility will be assumed by the authors for the content of the work being submitted to Ingeniería e Investigación, the Universidad Nacional de Colombia and third-parties;
2. The authorization conferred on the journal will come into force from the date on which it is included in the respective volume and issue of Ingeniería e Investigación in the Open Journal Systems and on the journal's main page (https://revistas.unal.edu.co/index.php/ingeinv), as well as in different databases and indices in which the publication is indexed;
3. The authors authorize the Universidad Nacional de Colombia's journal Ingeniería e Investigación to publish the document in whatever required format (printed, digital, electronic or whatsoever known or yet to be discovered form) and authorize Ingeniería e Investigación to include the work in any indices and/or search engines deemed necessary for promoting its diffusion;
4. The authors accept that such authorization is given free of charge and they, therefore, waive any right to receive remuneration from the publication, distribution, public communication and any use whatsoever referred to in the terms of this authorization.
