TY  - CONF
AU  - Radojević, Rade L.
AU  - Petrović, Dragan V.
AU  - Mileusnić, Zoran I.
AU  - Petrović, Srbobran
AU  - Đokić, Dragoslav
PY  - 2023
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/6748
AB  - This paper analyzes the problems related to the reconstruction of a semi-mounted
berry harvester into a self-propelled one specified for exploitation on smaller orchards. The
components of the self-propelled machine, their purpose and mutual functional connection are
described in details, which retained the principle of unilateral picking of half the row of bush
berries from its semi-mounted predecessor. Among the most important general design features,
the following stand out in particular: the drive of the harvester working components, which is
achieved by means of appropriate combinations of hydraulic and mechanical power transmissions,
which allows it to be highly adaptable to different working conditions on the terrain, and the
control device, which is designed to maintain the movement of the machine in the direction set
by the driver, without decreasing the safety and passability requirements of the machine itself.
In the technology of berry fruit production in the Republic of Serbia, the harvesting process is
still the basic limiting factor. Manual picking participates as much as 75% in total production
costs. The costs of mechanical harvesting are between 2.05 and 2.27 times lower in comparison
to manual picking, depending on whether the machine is a towed or self-propelled. The paper
also provides a comprehensive analysis of the energy parameters of work for both versions of
the harvester. The results indicate that power losses on rolling and slipping are lower in the
self-propelled version 10 and 40%, respectively, while in the semi-mounted version the power lost
on the climb is 60-70% lower compared to the self-propelled version. As the harvesting process
is still a limiting factor in berry fruit production, in addition to reducing costs by applying
mechanized solutions, one of the goals of the work is the optimization of applied technical
solutions for the same.
PB  - University of Belgrade, Faculty of Agriculture, Serbia
C3  - The 6rd International Symposium on Agricultural Engineering, ISAE-2023, 19-21 October, Belgrade Serbia
T1  - Development of a self-propelled barries fruit harvester
SP  - 25
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_6748
ER  - 

@conference{
author = "Radojević, Rade L. and Petrović, Dragan V. and Mileusnić, Zoran I. and Petrović, Srbobran and Đokić, Dragoslav",
year = "2023",
abstract = "This paper analyzes the problems related to the reconstruction of a semi-mounted
berry harvester into a self-propelled one specified for exploitation on smaller orchards. The
components of the self-propelled machine, their purpose and mutual functional connection are
described in details, which retained the principle of unilateral picking of half the row of bush
berries from its semi-mounted predecessor. Among the most important general design features,
the following stand out in particular: the drive of the harvester working components, which is
achieved by means of appropriate combinations of hydraulic and mechanical power transmissions,
which allows it to be highly adaptable to different working conditions on the terrain, and the
control device, which is designed to maintain the movement of the machine in the direction set
by the driver, without decreasing the safety and passability requirements of the machine itself.
In the technology of berry fruit production in the Republic of Serbia, the harvesting process is
still the basic limiting factor. Manual picking participates as much as 75% in total production
costs. The costs of mechanical harvesting are between 2.05 and 2.27 times lower in comparison
to manual picking, depending on whether the machine is a towed or self-propelled. The paper
also provides a comprehensive analysis of the energy parameters of work for both versions of
the harvester. The results indicate that power losses on rolling and slipping are lower in the
self-propelled version 10 and 40%, respectively, while in the semi-mounted version the power lost
on the climb is 60-70% lower compared to the self-propelled version. As the harvesting process
is still a limiting factor in berry fruit production, in addition to reducing costs by applying
mechanized solutions, one of the goals of the work is the optimization of applied technical
solutions for the same.",
publisher = "University of Belgrade, Faculty of Agriculture, Serbia",
journal = "The 6rd International Symposium on Agricultural Engineering, ISAE-2023, 19-21 October, Belgrade Serbia",
title = "Development of a self-propelled barries fruit harvester",
pages = "25",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_6748"
}

Radojević, R. L., Petrović, D. V., Mileusnić, Z. I., Petrović, S.,& Đokić, D.. (2023). Development of a self-propelled barries fruit harvester. in The 6rd International Symposium on Agricultural Engineering, ISAE-2023, 19-21 October, Belgrade Serbia
University of Belgrade, Faculty of Agriculture, Serbia., 25.
https://hdl.handle.net/21.15107/rcub_agrospace_6748

Radojević RL, Petrović DV, Mileusnić ZI, Petrović S, Đokić D. Development of a self-propelled barries fruit harvester. in The 6rd International Symposium on Agricultural Engineering, ISAE-2023, 19-21 October, Belgrade Serbia. 2023;:25.
https://hdl.handle.net/21.15107/rcub_agrospace_6748 .

Radojević, Rade L., Petrović, Dragan V., Mileusnić, Zoran I., Petrović, Srbobran, Đokić, Dragoslav, "Development of a self-propelled barries fruit harvester" in The 6rd International Symposium on Agricultural Engineering, ISAE-2023, 19-21 October, Belgrade Serbia (2023):25,
https://hdl.handle.net/21.15107/rcub_agrospace_6748 .

TY  - JOUR
AU  - Petrović, Dragan
AU  - Urošević, Mirko
AU  - Radojević, Rade
AU  - Mileusnić, Zoran
AU  - Petrović, Srbobran
PY  - 2017
UR  - http://aspace.agrif.bg.ac.rs/handle/123456789/4581
AB  - Problems related to self-propelled harvester stability during mechanized berry fruits harvesting at sloped terrains are analysed in this manuscript. The paper also presents an automatic leveling system of the raspberry and blackberry harvester. Low cost, simple design, reliability and minimized maintenance make it very suitable for berryfruits harvesters applied on terrains distant from service centres. The whole system, as well as its components, is designed and manufactured in Serbia.
AB  - U radu su analizirani problemi vezani za stabilnost samohodnog berača pri mehanizovanoj berbi jagodastog voća na nagnutim terenima. Prikazano je rešenje automatske nivelacije berača plodova maline i kupine. Zahvaljujući niskoj ceni, jednostavnosti konstrukcije, visokoj pouzdanosti, uprošćenom i minimalizovanom održavanju, rešenje je posebno pogodno za manje zasade udaljene od servisnih centara. Opisane su komponente sistema, njihova namena i međusobna funkcionalna povezanost. Od posebnog značaja su činjenice da je sistem nivelacije, kao i njegove komponente, projektovan i proizvedene u našoj zemlji.
PB  - Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd
T2  - Poljoprivredna tehnika
T1  - Developing the hydraulic automatic leveling system of berry fruit harvester
T1  - Razvoj hidrauličko-mehaničkog sistema automatske nivelacije berača maline i kupine
EP  - 10
IS  - 2
SP  - 1
VL  - 42
UR  - https://hdl.handle.net/21.15107/rcub_agrospace_4581
ER  - 

@article{
author = "Petrović, Dragan and Urošević, Mirko and Radojević, Rade and Mileusnić, Zoran and Petrović, Srbobran",
year = "2017",
abstract = "Problems related to self-propelled harvester stability during mechanized berry fruits harvesting at sloped terrains are analysed in this manuscript. The paper also presents an automatic leveling system of the raspberry and blackberry harvester. Low cost, simple design, reliability and minimized maintenance make it very suitable for berryfruits harvesters applied on terrains distant from service centres. The whole system, as well as its components, is designed and manufactured in Serbia., U radu su analizirani problemi vezani za stabilnost samohodnog berača pri mehanizovanoj berbi jagodastog voća na nagnutim terenima. Prikazano je rešenje automatske nivelacije berača plodova maline i kupine. Zahvaljujući niskoj ceni, jednostavnosti konstrukcije, visokoj pouzdanosti, uprošćenom i minimalizovanom održavanju, rešenje je posebno pogodno za manje zasade udaljene od servisnih centara. Opisane su komponente sistema, njihova namena i međusobna funkcionalna povezanost. Od posebnog značaja su činjenice da je sistem nivelacije, kao i njegove komponente, projektovan i proizvedene u našoj zemlji.",
publisher = "Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd",
journal = "Poljoprivredna tehnika",
title = "Developing the hydraulic automatic leveling system of berry fruit harvester, Razvoj hidrauličko-mehaničkog sistema automatske nivelacije berača maline i kupine",
pages = "10-1",
number = "2",
volume = "42",
url = "https://hdl.handle.net/21.15107/rcub_agrospace_4581"
}

Petrović, D., Urošević, M., Radojević, R., Mileusnić, Z.,& Petrović, S.. (2017). Developing the hydraulic automatic leveling system of berry fruit harvester. in Poljoprivredna tehnika
Univerzitet u Beogradu - Poljoprivredni fakultet - Institut za poljoprivrednu tehniku, Beograd., 42(2), 1-10.
https://hdl.handle.net/21.15107/rcub_agrospace_4581

Petrović D, Urošević M, Radojević R, Mileusnić Z, Petrović S. Developing the hydraulic automatic leveling system of berry fruit harvester. in Poljoprivredna tehnika. 2017;42(2):1-10.
https://hdl.handle.net/21.15107/rcub_agrospace_4581 .

Petrović, Dragan, Urošević, Mirko, Radojević, Rade, Mileusnić, Zoran, Petrović, Srbobran, "Developing the hydraulic automatic leveling system of berry fruit harvester" in Poljoprivredna tehnika, 42, no. 2 (2017):1-10,
https://hdl.handle.net/21.15107/rcub_agrospace_4581 .