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Evaluation of combine harvesters John Deere 670i and Claas Lexion 770
JURÁSEK, Martin
This bachelor thesis evaluates the John Deere 670i and Claas Lexion 770 combine harvesters in terms of cost, threshing quality, losses and area performance. The thesis describes the functions of the combine harvesters and their technological description and practical applications. The parameters calculated in the bachelor thesis are pre-harvest and harvest losses, area and weight performance, mass yield, travel speed, crushing quality, fuel consumption and fixed and variable costs.
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Threshing system of combines harvester
Štelcl, Michael ; Červinka, Jan (referee) ; Škopán, Miroslav (advisor)
This bachelor thesis is about evaluation of maximum throughput of straw and grain together, in various types of threshing units which are used in combine harvesters. It provides basic informations about two types of combine field-test procedures. In the end of work is shortly describe current development of combine harvesters and contain two proposals of alternative constructions of threshing units according to author of this bachelor thesis.
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Teorie a konstrukce mlátících ústrojí sklízecích mlatiček
Remeš, Jan
The thesis describes the history and the history of threshing grain combine harvesters. The paper describes the types of threshing unit. They are given energy indicators, the main technical data threshing system and their calculation. The paper gives an overview of the performance categories, sales, capital costs, operating costs and on the percentage of combine harvesters on the market today. The following describes the structure threshing device manufacturers marks Case, Claas, John Deere and New Holland, and there is shown a graphical comparison of their technical parameters. The work describes the mass flow threshing mechanism. Theoretical calculation is expressed by the dependence of flow quantity on the length of the threshing drum and then compared with the actual measured values.
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Porovnání kvalitativních ukazatelů u sklízecích mlátiček s různou konstrukcí mlátících ústrojí
MRAZÍK, Václav
This thesis aims to compare combine harvesters and different thrashing system designs. The different types of harvesters, tangential, axial and hybrid thrashing systems for which measurements were obtained during conducted field work are described in detail. Obtained results are then presented together with discussion on conditions of each measuring activity. Individual stations are then evaluated and comparison of various qualitative attributes affecting the performance, quality and fuel consumption is presented. Evaluation of individual thrashing systems is presented in the conclusion of this thesis together with answers to questions regarding the methodology of conducted measuring activities. Finally, findings from this thesis are applied in practice.
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Sklízecí mlátičky: příprava výukových materiálů
ŠÁDA, Ondřej
This thesis contains an overview of harvesting thrashing machines. The thesis is divided to chapters according to the used systems and it provides a view of agro technical requirements, a division of the main parts, and the description of their fundamental functions. This work should be used as an additional study material for the students from the agricultural department, transport and manipulative techniques department of the South Bohemian University.
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Teorie a konstrukce mlátících ústrojí sklízecích mlatiček
Remeš, Jan
The thesis describes the history and the history of threshing grain combine harvesters. The paper describes the types of threshing unit. They are given energy indicators, the main technical data threshing system and their calculation. The paper gives an overview of the performance categories, sales, capital costs, operating costs and on the percentage of combine harvesters on the market today. The following describes the structure threshing device manufacturers marks Case, Claas, John Deere and New Holland, and there is shown a graphical comparison of their technical parameters. The work describes the mass flow threshing mechanism. Theoretical calculation is expressed by the dependence of flow quantity on the length of the threshing drum and then compared with the actual measured values.
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Hodnocení sklízecích mlátiček NEW HOLLAND s odlišným provedením hlavních funkčních částí
ZDRAŽIL, Daniel
This bachelor thesis is focused on cereal harvest where the most important elements are the combine harvesters. The thesis also describes the importance of cereals, the history of the combine harvesters and their dividing into groups. The bachelor thesis analyses the difference in the activity, productivity and quality of work made by combine harvesters of the same brand with different threshing device. In this thesis, there is also the comparison which is performed on the same fields during harvest of winter wheat and rape oil.
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Bubnové mlátiace ústrojenstvo obilných kambajnov a jeho modifikácie
Petrek, Dávid
Bachelor thesis is devoted to the description of harvesters, which is the most important link threshing devices. Is this classification harvester workflows harvesting seed crops. I gave a comprehensive overview of tangential harvesters from leading manufacturers. The paper also describes the structure and function of individual harvesters. The determining factor for quality and quantity, collection will be technology of collection. Standards witch are put on this technology are too high therefore pay attention for perpetuance innovation of technology and suitable setting are very important.
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