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The engine unit of forestry harvestor
Petr, Tomáš ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
At the beginning of bachelor´s thesis is description of harvester and its main parts. Then research of four six – wheeled forestry harvesters was developed. Features of compared harvesters are similar to the task. The next point was theoretical part with equations needed for calculation of rolling and inertial resistances. Based on the theory an enumeration of powers of particular driving modes was done. Then performances for work devices of harvester were calculated. From the single values were determined total powers of machine, which were transparently organized into table and graph. Based on the maximal total power were chosen three appropriate engines. From the three was selected the most suitable one.
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Mechanizace sklizně vinné révy
Zborovský, Miroslav
The bachelor thesis deals with the mechanization of grape harvest in viticulture. It describes the development of mechanical grape harvest and focuses on specific types of machines currently available on the market as well as their historical background. The agrotechnical requirements necessary for establishing a vineyard with a vision for future mechanized operations are also evaluated. Using data from professional literature and technical specifications, relevant parameters that grape harvesting machines must meet are determined, followed by an assessment of two machines from the brands PELLENC and NEW HOLLAND.
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Powertrain systems of forest machines of the CTL technology
Janík, Richard ; Malášek, Jiří (referee) ; Mergl, Václav (advisor)
This bachelor's thesis contains a research analysis of drive systems of forest machines of harvester technology. At the beginning, harvester technology machines and their functions are described. The next chapters deal with the drive systems of these machines. The main topic is hybrid drive systems, which are divided into individual categories in this work, and diagrams of drive systems of specific harvester technology machines are created and described.
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Hodnocení harvestorové technologie
KOČÍ, David
The aim of this bachelor thesis is try to compare machines for felling trees at two private entrepreneurs with the same production focus but different machines. The main comparison lies in the performance, fuel consumption and financial costs of individual work operations in a pre-designated area. All this information will be converted to the annual work output of the machines.
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Vibration energy harvester as a tuned mass damper
Novák, David ; Machů, Zdeněk (referee) ; Rubeš, Ondřej (advisor)
This bachelor thesis it's about vibration energy harvester as a tuned mass damper the design of a vibration generator as a dynamic vibration damper.The work contains a research part, which examines the methods of damping mechanical systems and the influence of the vibrating generator on the vibrating base. Based on this knowledge, equations of motion were derived for the design of the model in the SIMULINK program, where we optimized the parameters for maximizing the obtained electrical power and maximizing the damping effect.
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Handling equipment for forestry
Martinec, Patrik ; Pokorný, Přemysl (referee) ; Hloušek, David (advisor)
This bachelor thesis is focused on a research treatise on a forest fleet. The beginning of the work outlines the historical development of machines in the woodworking industry, it also deals with harvesters and their individual division according to specifications. The work also focuses on important parts of the harvester such as the hydraulic crane and harvester head. In the same spirit of comparison and division, export tractors are developed in the work. The chapter of the last work summarizes wheel loaders and their use in the woodworking industry. At the end of the thesis, the individual goals and outputs of the bachelor's thesis are evaluated.
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Harvester
Brychta, Vojtěch ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
Content of this bachelor’s thesis is critical research of harvesters, especially designed for the thinning felling. According to bigger amount of the wheel harvesters in comparison with the tracked harvesters in the Czech Republic, is this work focused on the machines with the wheeled chassis. In the beginning of this work is discussed division of harvesters, second chapter is about construction. Next parts are focused on current conceptual solutions, comparison of machines, including comparison of the harvester heads and energy wood heads. In the conclusion is mentioned supposed development of wheeled harvesters.
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Hlučnost sklízecí soupravy při lisování válcových balíků
ŠOUKAL, Jan
The diploma thesis deals with the noise level of the harvester when pressing round balers. The sound pressure levels were measured at a selected distance from the harvesting set when pressing fodder. The measurement of operator noise in the machine cab (tractor) was also measured. These measured noise values are displayed in charts. The harvesting set is evaluated for environmental noise pollution according to the characteristics of the harvested land and the working conditions of the operator.
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Stroje pro sklizeň píce: příprava výukových materiálů
ZUKAL, Martin
This bacalar thesis provides an overview of forage harvesting machines. The thesis is divided into chapters according to individual types of machines and provides a view of their agrotechnical requirements, partition, description of basic carried out operations and description of their basic work. The bacalar thesis should serve as supplementary teaching text for students of the Department of Agricultural, transport and handling Technology of the Faculty of agriculture of South Bohemian University. Information and parameters are found in the technical literature on agricultural machinery, promotional materials and websites of manufacturers and vendors of this technique.
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