SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.14393/BJ-v36n1a2020-42194 http://hdl.handle.net/11449/196449 |
Resumo: | The mechanized harvesting operation of coffee sweep from ground have a great importance, due the value of the coffee that was lost by the harvest process, as well as the breakdown of the cycle of pests that can damage the coffee. To change work settings can influence significantly the capacity of the gathering system. Due, the objective of this study was to evaluate the influence the speed of displacement and rotations of the components of gathering coffee machine in its performance. The experiment was carried out in the municipality of Presidente Olegario-MG on coffee plantations aged 10 to 11 years. The field, presenting an average of 990 kg ha(-1) of coffee present in the soil after the machine harvest. The engine rotations of the tractor evaluated were 146.6, 162.3, 178.0, 193.7, and 209.4 rad.s(-1) combined with the 1st A and 2nd A gears, resulting in different working speeds. The treatments were distributed in randomized blocks with five replicates. The variables analyzed were the gathering efficiency, cleaning efficiency, coffee losses, and percentage of mineral and vegetal impurities. It was concluded that the gathering efficiency was higher when working with 178.0 rad.s(-1) at 1.26 km h(-1), resulting in lower coffee losses in the operation, a preponderant factor in the study. On the other hand, the best cleaning efficiency of the machine was found when using 193.7 rad.s(-1) and 1.37 km h(-1). |
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SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINEAgricultural mechanizationGathering coffeeCoffea arabicaThe mechanized harvesting operation of coffee sweep from ground have a great importance, due the value of the coffee that was lost by the harvest process, as well as the breakdown of the cycle of pests that can damage the coffee. To change work settings can influence significantly the capacity of the gathering system. Due, the objective of this study was to evaluate the influence the speed of displacement and rotations of the components of gathering coffee machine in its performance. The experiment was carried out in the municipality of Presidente Olegario-MG on coffee plantations aged 10 to 11 years. The field, presenting an average of 990 kg ha(-1) of coffee present in the soil after the machine harvest. The engine rotations of the tractor evaluated were 146.6, 162.3, 178.0, 193.7, and 209.4 rad.s(-1) combined with the 1st A and 2nd A gears, resulting in different working speeds. The treatments were distributed in randomized blocks with five replicates. The variables analyzed were the gathering efficiency, cleaning efficiency, coffee losses, and percentage of mineral and vegetal impurities. It was concluded that the gathering efficiency was higher when working with 178.0 rad.s(-1) at 1.26 km h(-1), resulting in lower coffee losses in the operation, a preponderant factor in the study. On the other hand, the best cleaning efficiency of the machine was found when using 193.7 rad.s(-1) and 1.37 km h(-1).Univ Estadual Paulista, Dept Engn Rural, Campus Jaboticabal, Jaboticabal, SP, BrazilUniv Estadual Paulista, Dept Ciencias Exatas, Campus Jaboticabal, Jaboticabal, SP, BrazilUniv Estadual Paulista, Dept Engn Rural, Campus Jaboticabal, Jaboticabal, SP, BrazilUniv Estadual Paulista, Dept Ciencias Exatas, Campus Jaboticabal, Jaboticabal, SP, BrazilUniv Federal UberlandiaUniversidade Estadual Paulista (Unesp)Oliveira, Bruno Rocca de [UNESP]Tavares, Tiago de Oliveira [UNESP]Silva, Rouverson Pereira da [UNESP]Paula Borba, Matheus Anaan de [UNESP]Borges Valeriano, Thaynara Tuany [UNESP]2020-12-10T19:45:24Z2020-12-10T19:45:24Z2020-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article61-67http://dx.doi.org/10.14393/BJ-v36n1a2020-42194Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 36, n. 1, p. 61-67, 2020.1981-3163http://hdl.handle.net/11449/19644910.14393/BJ-v36n1a2020-42194WOS:000504830800007Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengBioscience Journalinfo:eu-repo/semantics/openAccess2024-06-06T15:18:29Zoai:repositorio.unesp.br:11449/196449Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:59:27.617465Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE |
title |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE |
spellingShingle |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE Oliveira, Bruno Rocca de [UNESP] Agricultural mechanization Gathering coffee Coffea arabica |
title_short |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE |
title_full |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE |
title_fullStr |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE |
title_full_unstemmed |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE |
title_sort |
SPEED AND ROTATION VARIATIONS IN GATHERING COFFEE MACHINE |
author |
Oliveira, Bruno Rocca de [UNESP] |
author_facet |
Oliveira, Bruno Rocca de [UNESP] Tavares, Tiago de Oliveira [UNESP] Silva, Rouverson Pereira da [UNESP] Paula Borba, Matheus Anaan de [UNESP] Borges Valeriano, Thaynara Tuany [UNESP] |
author_role |
author |
author2 |
Tavares, Tiago de Oliveira [UNESP] Silva, Rouverson Pereira da [UNESP] Paula Borba, Matheus Anaan de [UNESP] Borges Valeriano, Thaynara Tuany [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Oliveira, Bruno Rocca de [UNESP] Tavares, Tiago de Oliveira [UNESP] Silva, Rouverson Pereira da [UNESP] Paula Borba, Matheus Anaan de [UNESP] Borges Valeriano, Thaynara Tuany [UNESP] |
dc.subject.por.fl_str_mv |
Agricultural mechanization Gathering coffee Coffea arabica |
topic |
Agricultural mechanization Gathering coffee Coffea arabica |
description |
The mechanized harvesting operation of coffee sweep from ground have a great importance, due the value of the coffee that was lost by the harvest process, as well as the breakdown of the cycle of pests that can damage the coffee. To change work settings can influence significantly the capacity of the gathering system. Due, the objective of this study was to evaluate the influence the speed of displacement and rotations of the components of gathering coffee machine in its performance. The experiment was carried out in the municipality of Presidente Olegario-MG on coffee plantations aged 10 to 11 years. The field, presenting an average of 990 kg ha(-1) of coffee present in the soil after the machine harvest. The engine rotations of the tractor evaluated were 146.6, 162.3, 178.0, 193.7, and 209.4 rad.s(-1) combined with the 1st A and 2nd A gears, resulting in different working speeds. The treatments were distributed in randomized blocks with five replicates. The variables analyzed were the gathering efficiency, cleaning efficiency, coffee losses, and percentage of mineral and vegetal impurities. It was concluded that the gathering efficiency was higher when working with 178.0 rad.s(-1) at 1.26 km h(-1), resulting in lower coffee losses in the operation, a preponderant factor in the study. On the other hand, the best cleaning efficiency of the machine was found when using 193.7 rad.s(-1) and 1.37 km h(-1). |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-10T19:45:24Z 2020-12-10T19:45:24Z 2020-01-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.14393/BJ-v36n1a2020-42194 Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 36, n. 1, p. 61-67, 2020. 1981-3163 http://hdl.handle.net/11449/196449 10.14393/BJ-v36n1a2020-42194 WOS:000504830800007 |
url |
http://dx.doi.org/10.14393/BJ-v36n1a2020-42194 http://hdl.handle.net/11449/196449 |
identifier_str_mv |
Bioscience Journal. Uberlandia: Univ Federal Uberlandia, v. 36, n. 1, p. 61-67, 2020. 1981-3163 10.14393/BJ-v36n1a2020-42194 WOS:000504830800007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Bioscience Journal |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
61-67 |
dc.publisher.none.fl_str_mv |
Univ Federal Uberlandia |
publisher.none.fl_str_mv |
Univ Federal Uberlandia |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128882416549888 |