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Sklízecí ústrojí (adaptéry) sklízecích mlátiček
Bašta, Zdeněk
The thesis rewievs harvesters as the main element of the harvesting process. It especially concentrates on harvesting adapters for grain crops. The thesis also evaluates the main advantages and disadvantages of MacDon harvesting adapter for grain crops and compares this adapter to competitive harvesting adapter for grain crops. Then the bachelor work describes the process of rating the harvesting adapter and the quality of work made by the adapter. It also compares the two chosen adapters from the technical and economic aspect.
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Technické a ekonomické aspekty sklizně řepky
Duba, Tomáš
This Thesis the Technical and economic aspects of canola harvest deals with problematics of harvest this crop. The theoretical part includes analysis of crop, agronomic requirements and use. Also in terms of machines that harvest it, requirements, news in branch of combine harvestors and adjustments fot harvesting canola. Field measurement contains comparing the selected combine harvester parameters at different stubble mowing heights. The values were measured on the combine harvester Case IH AFX 8120 with harvesting adapter MacDon FD 75. The values obtained were processed and served to make the final conclusions.
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Sklízecí mlátičky pro sklizeň obilovin
Grégr, Jakub
The bachelor thesis on the topic of combine harvesters for the cereals harvest in their introductory sections (part) deals with the distribution of the combine harvesters and their inclusion in the harvesting proces. Next part is introducing overview decisive functionalities of individual combine harvester manufacturer. The last part of bachelor thesis is focused on tracked chassis SmartTrax ™ a TERRA TRAC, calculation of contact pressure and beneficts and disadvantages tracked chassis.
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Porovnání sklízecích mlátiček různých výrobců při sklizni obilovin a řepky
ADAMEC, Petr
The diploma thesis on comparison of combine harvesters in terms of work quality is based on professional literary research, which describes the parts of combine harvesters from adapters to threshing devices. The methodology of this thesis describes the procedure for obtaining results and values for comparison between John Deere 9640 WTS, New Holland TC5060, Claas Lexion 450 and Sampo Comia C8 combine harvesters during work. The results and the conclusion of the work compare the calculated, measured and determined results achieved precisely according to the methodology of 2017. The combine harvesters are compared in the areas of work quality, namely in the lossability, the theoretical throughput, the quality of spreading and crushing of straw and finally in efficiency and fuel consumption. The work also includes the costs associated with opearting combine harvesters.
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Hodnocení a porovnání sklízecích mlátiček CLAAS TUCANO 440 a CLAAS TUCANO 450 při sklizni obilovin a řepky ozimé
BRÝNA, Ondřej
This diploma thesis deals with the evaluation of CLAAS TUCANO 440 and CLAAS TUCANO 450 combine harvesters for the harvest of cereals and winter rape. It evaluates problems in terms of losses, depending on grain humidity, quality of crushing and spreading plant residues. The thesis sets basic performance and is supplemented by a simple analysis of investment and operating costs. The methodology of the solution was based on own measurements, information obtained from the owner, literature and agricultural standards.
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Hodnocení sklizňové linky pro sklizeň kukuřice metodou CCM
KOPIC, Pavel
The main focus of this bachelor thesis is on the evaluation of the harvesting line used for the corn harvesting with the CCM method. In the first part of the literary content, there is an introduction to a structural solution of the threshing machines used forharvesting, cylindrical crushers and high volume mechanical presses. In the second part there is a description of the corn harvesting using harvesting threshing machines and the technology of the CCM method. In the practical part I am going to focus mainly on methodology. I am going to present the steps and calculations that are important for the evaluation of the threshing machines used for harvesting, cylindrical crushers and high volume mechanical presses. Also the results of the evaluation of quality of the threshing machine´sfunction from the point of loss, the quality of grinding and spreading the after-harvesting remains, performance parameter of the cylindrical crusher and the high volume mechanical press are attached.
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Měření hmotnostní koncentrace polétavého prachu v kabinách zemědělské techniky
MATĚJKA, Petr
This Bachelor thesis is focused on comparison of concentrations of particulate matter in cabins of combine harvesters. Fortschritt E 512, New Holland TX 66 and New Holland CX 880 were selected for the measurement. Literary research contains information about the history of combine harvesters and the basic concepts of dust. The results obtained were evaluated, plotted and compared.
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Vliv seřízení sklízecí mlátičky na sklizňové ztráty
Kozel, Martin
This thesis deals with the influence of combine harvester setting on harvest losses and it aims on individual components of combine harvesters. The principles of tangential and axial threshing mechanisms are described. Separator rotors and straw walker principles are analysed in the part of remaining grain separation. Also the cleaning mechanisms are mentioned and clarified. Theoretical part finishes by the description of combine harvester settings impact on harvest losses. The influence of combine harvester settings on harvest losses were verified by experimental measurement. The change of threshing mechanism and ground speed were realized with subsequent monitoring of cleaning and grain separation losses. Finally the calibration of controlled engine choking was investigated for the material flow monitoring.
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Vliv parametrů porostu na práci sklízecí mlátičky
Novotný, Vojtěch
The thesis Effect parameters stand on the work of the combine, deals with the relationship between grain yield per hectare and loss of grain per hectare. Measurements were carried out on axial harvester. When measurements were compared to the value of losses at different yields and different setting combine. The job losses were measured on grain crops of spring barley, winter wheat and oilseed rape. Changing the setting was focused on the speed of the rotor, the gap baskets, fan speed and the gap of the upper and lower sieves. These setting values are compared with the original factory settings. They were compared to losses of grain and fuel consumption at each setting with the same yield.
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Teorie separace obilní hmoty u tangenciální sklízecí mlátičky
Nedoma, Roman
The thesis deals with combine harvesters. At the beginning there is describedtheir historical development and division. It is focused on a process of getting grains from grain mass in tangential self-propelled combine harvesters. The process is described from the outset up to getting clean grains stored in the reservoir. The main theme is a separation process tied for walkers, which is dismantled in parts. This process includes kinematic and dynamic analysis of the mass point motion over the walkers. Further it includes a theory of sifting which is based on the dimensions. There is displayed a list of solutions that are used by manufacturers in their machines. The grain getting processtries to improve work of combine harvesters and make it more efficient. In the conclusion, there is depicted a comparison of thresherparameters made by various manufacturers.
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