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Hodnocení sklízecí mlátičky s rozlišným provedením pojezdového ústrojí
BARÁK, Jan
This thesis describes chassis design of combine harvester and its types generally. This thesis is focused on Claas Lexion 750 Terra Trac Helmut combine harvester with crawler chassis. For each selected chassis and systems by global manufacturers of agricultural machinery are described main parts and their possible variants. Thesis includes practical methodical measurements, which provides details for the assessment of the losses, spreading quality, crushing quality, operating parameters, machine performance and fuel consumption. Next the effect of moisture on the losses, quality of spreading and crushing is evaluated. Furthermore, I compare effect of crawler chassis on performance and in the end is a simple analysis of investmend and operating costs and characteristics of the company. The aim of the thesis is to evaluate operation and work quality of combine harvester with crawler chassis at harvest of cereals and rapeseed in agricultural production and simple economical evaulation of the machine.
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Tracked chassis of a forwarder
Svoboda, Jan ; Pokorný, Jan (referee) ; Kašpárek, Jaroslav (advisor)
The thesis describes the design of a modular track undercarriage system for a forest utility vehicle called the forest forwarder. In the introduction there is a research study which reviews a variety of design options. The main part of the thesis describes the 3D model created in the Catia V5 programme. The model was subjected to an analysis of dynamic effects by simulated use of the track undercarriage system in the MSC Adams programme. A selected part of the undercarriage was analyzed by the finite element method in the Ansys Workbench programme. Drawing documentation of some of the components is included at the end of the thesis.
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The study wheeled undercarriages of mobile machines
Olšovský, Petr ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
The objective of this bachelor thesis is to summarize basic findings regarding various types of wheeled undercarriages that are used on contemporary machines. The first part of this paper deals with numerous requirements that should be fulfilled by the design of an undercarriage. The fulfilment of these requirements also helps to assess whether the design should be used for a specific machine. Another focus of this paper is to summarize all design solutions regarding propulsion, tyres, stabilizing elements and steering mechanisms. These solutions are compared to each other. Important design elements of wheeled undercarriages are described as well.
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The design of a mobile crawler undercarriage for transport mechine
Mareš, Michal ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
First part of this bachelor's thesis deals with the review of delta undercarriage for mobile crawlers with four delta crawler undercarriage. The text discuss the advantages and disadvantages of this approach. The second part of this work is aimed on the construction of such delta carriage with a maximum load of 5000 kg. The carriage is designed as modular to be able to be easily replaced. This basic concept was followed by precise mechanical design and the construction was supported by the basic mechanical computations of important parts. Detailed three-dimensional model of the undercarriage was performed in the Autodesk Inventor 2015 software.
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Design of hillside elevator
Jaroš, Tomáš ; Smejkal, David (referee) ; Dvořáček, Jiří (advisor)
This Bachelor´s Thesis presents a structural proposal of a hillside elevator to a house on the slope used to carry goods and people. The elevator is designed in a total length of 40 meters with a capacity of 400 kilograms and slope of 25 degrees. The main focus aims at the drive of the machine and its safety. The elevator fulfills prescribed safety terms according to the 127/2004 directive. A 3D model of the elevator, a design drawing and drawings of its individual components are included.
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Crawler chassis for a forwarder
Plichta, Zbyněk ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
The first part of the bachelor´s thesis introduces crawler chassis used in forwarders and harvesters, its second part includes a concept design of a crawler chassis for a forwarder based on the given parameters. The design concentrates on the arrangement of the undercarriage and the choice of suitable track and idlers. Another intention of the design is to find an appropriate solution for suspension of bottom rollers with a sufficient travel, while observing small dimensions of the undercarriage. The outcome of the thesis is a drawing of the designed crawler chassis.
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Crawler chassis for a forwarder
Beránek, Jakub ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
This bachelor thesis is focused on using different types of caterpillar tracks with effort to minimize pressure of vehicle on forest land and keep the required speed and traction. The fractionation of undercarriage and evaluate of their abilities is provided in this work. After that, the process of deploying tracks and process of tensioning tracks is described. In the end the conceptual design of undercarriage is conducted
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Landing gears of ultralight airplanes and its loading
Talanda, Tomáš ; Jebáček, Ivo (referee) ; Juračka, Jaroslav (advisor)
This bachelor thesis deals with engineering solution and loading of ultralight aircraft landing gear. At first requirements for landing gear are mentioned, then the basic arrangement and structural design of aircraft landing gear are explicated. Next part contains calculation procedure and sample calculation of P92 ECHO aircraft landing gear loading. The last part of the thesis deals with experimental verification of landing gear loading, that was calculated before.
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Crawler undercarriage for building machines
Richtr, Pavel ; Pokorný, Přemysl (referee) ; Kašpárek, Jaroslav (advisor)
The point of the bachelor’s thesis is to recapitulate pieces of knowledge about types of crawler undercarriages to the weight of 10 tons, make survey of application various types of undercarriages for concrete types of machines, to give and confront properties of undercarriages and tracks in the light of weight of machine and operating specifications.
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