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Design of a stubble cultivators for aggregation with a tractor 75k
Krutský, Lukáš ; Fajkus, Pavel (referee) ; Kašpárek, Jaroslav (advisor)
This bachelor's thesis deals with the design of a fully mounted cultivator in a three-point tractor hitch, cat. 2N/2. A short search of similar equipment and tractors of the corresponding power range was performed. The concept is designed and based on analytical calculations of dimensional and functional properties. Strength calculations are performed according to the standard, critical points of the equipment are checked. The work contains pictures of 3D models and drawing documentation.
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Design of a stubble disc cultivators for aggregation with a tractor 50k
Pech, Vladimír ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
This thesis deals with the design of a stubble cultivator for a tractor. The aim of this thesis is to design a stubble cultivator that fulfill the conditions of the assignment. In this thesis is a search of similar machines available on the market. Followed by describes the methods of tillage which the proposed stubble disc cultivator is used. The next part of the thesis describes possibilities of stubble cultivator their advantages and disadvantages. The design part deals with the construction which is based on drawing documentation. In the next part of the thesis is a calculation which is focused on determination of the required tractor power that is needed for operation with the designed stubble disc cultivator.
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Vliv konstrukce odhrnovaček na odpor pluhu
Opluštil, Adam
In the theoretical part, the construction of soil preparing machines is discussed, in particular the construction of ploughs is described and the construction of machines for minimizing soil preparing is also described. The practical part dealt with the investigation of two types of plough mouldboards. The first type of design is the standard mouldboard and the second type is the slatted mouldboard. The content of the work was, among other things, to determine which type of construction exerts more resistance on the whole plough. Pöttinger SERVO 45 M PLUS and SERVO 45 M PLUS NOVA ploughs were used for the measurements. Both ploughs were 4-radial reversible so that the results could be compared. A Zetor Forterra 150 HD tractor with a power of 95 kW (129,2 hp) was used as the tractive power source. The field measurement, which took place from 9 August to 11 August 2021, took place in the municipality of Sebranice u Skalice nad Svitavou. The approximately 10 ha of land where the measurements were carried out consisted of brown earth with a humus content of 2,5 %. Furthermore, measuring sections of 50 m length were marked out. During the measurements, data were collected on: time taken to pass the measuring sections, pulling power, fuel consumption, soil compaction and plough depth and width. Fuel consumption was measured with mass flow meters. To measure the specific resistance of the plough, the plough system was pulled by a second tractor. The tractor was a John Deere 8330 tractor with a power of 254 kW (330 hp). The connection between the two tractors was provided by a rope with an embedded Hottinger strain gauge force transducer that was placed in the hitch of the pulling tractor. The condition for calculating the plough resistance was to find the rolling resistance out, which was then subtracted from the tractive force. The results indicated that the average percentage difference between the specific resistances of the ploughs was almost 4,7 % with the standard mouldboard (68.47 kPa) having a higher specific resistance than the slatted mouldboard (65.40 kPa). This suggests that in heavier soils it is economically more advantageous to use a plough with a slatted mouldboard, which has less resistance.
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Vliv vybraných agrotechnických faktorů na výnos a jeho kvalitu u cukrové řepy
Zimek, Ondřej
The aim of this diploma thesis on the topic „Influence of selected agrotechnical factors on yield and its qualiny in sugar beet“ is to focus on selected agrotechnical factors (varieties and tillage, factors that have and will have significant infuelnce on sugar beet growing in Czech republic. Data from farm trials were provided by Moravskoslezské cukrovary, s.r.o. – Hrušovany nad Jevišovkou. Data from small-plot experiments were provided by The Institute of Agrosystems and Bioclimatology of AF MENDELU from its own Field experiment station. The years 2021 and 2022 were evaluated. The observation was focuse on the trend of yield and sugar content in (pre-campaing“ sampling. The main goal was to evaluate the influence of factors on the final yield of the given locations at the end of campaign. Here the effect of variety and tillage on sugar content (%), yield (t/ha) and polarization sugar yield (t/ha) was evaluated. Regarding the infuelnce of varieties, it was found that the classic type still achieves slightly better results than the Conviso Smart variety. The influence of tillage shows at the evaluated locations that when plowing was used, sugar beet achieved better results in all parameters than when using minimalization technology.
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Concept of the rotary harrow
Moštěk, Michal ; Fajkus, Pavel (referee) ; Kašpárek, Jaroslav (advisor)
The bachelor's thesis deals with the design of a rotary harrow. In the beginning of the thesis, a short research is written regarding soil cultivation. Rotary harrows and tractors in the corresponding power series are listed in the next chapter. In the next part of the work, individual components are described and their selection is justified. The construction of individual components is described in a separate chapter. The rotary gate is designed with a three-point hinge cat. 2N/2. In the last part of the work, the strength calculation of the gears, the basic durability of the rotor bearings and the inspection of the shaft of the bearings is carried out. Calculations are made according to standards. The work includes drawing documentation and images of the 3D model.
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Možnosti snižování nákladů u traktorových souprav na zpracování půdy
Fajmon, Jiří
The thesis on the theme-Possibilities of reduction costs by tractors kit for treatment of soil-is giving us in the theoretic part basic information about construction of nowadays tractors, possibilities its traction and effectiveness of use. It deals with economy of treatment of soil primarily with energy demands and effectiveness tillage. In the practical part of this thesis is processed field measurements, which was made for purpose to evaluate usage of traction hydraulic cylinder plough. It was investigated how the features of traction cylinder are influencing fuel consumption, traction of wheel and efficiency of tractors kit.
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Půdoochranné technologie pěstování kukuřice s výsevem do mulče meziplodin
Reiter, Michal
The aim of this diploma thesis was to evaluate soil conservation technologies in the maize cultivation using cover crops. Biomass production was studied in selected cover crops. The influence of various tillage technologies and cover crops on the maize grain yield was monitored, and the number of maize plants in a row was evaluated. The exper-iment took place in 2018/2019 in Žabčice, at the school farm of Mendel University. Five types of cover crops were covered in the experiment: green peas, oats, mustard, phacelia and lucerne. Three options of tillage were studied: strip tillage, minimum tillage and no tillage. The oats showed the largest production of biomass. The largest production of maize grain was without using any cover crops, but some cover crops had almost the same grain production. Out of the cover crops, the best influence on the yield was by oats, otherwise the lowest influence on the yield was by lucerne. Maize achieved the highest yield after the minimum tillage technology.
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