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Design of a lifting mechanism for artificial lighting for hydroponic cultivation
Černoch, Lukáš-David ; Máša, Vítězslav (referee) ; Naď, Martin (advisor)
The work deals with the optimization of lighting for hydroponic systems in terms of energy efficiency, using a lifting mechanism. It is based on the selection of a suitable lighting, stroke solutions and the possibility of simple automation. The introductory part analyzes the basic principles and variants of hydroponic farms, their advantages, disadvantages and description of partial parts. The work is focused on the design of the light lifter mechanism, so it describes in more detail the different types of lighting for growing plants, and also summarizes the various lifting mechanisms from which it is chosen the most suitable. Subsequently, a 3D model of the selected mechanism was created including a motion study. The final part of the practical part was the price return calculation of the mentioned mechanism.
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Thrombi detection in main brain arteries in CT image data
Líška, Martin ; Nemček, Jakub (referee) ; Chmelík, Jiří (advisor)
The master’s thesis deals with automatic preprocessing, segmentation and consecutive analysis of volume data of anonymized patient CTA acquisitions with an indication of stroke. Preprocessing of volume data is an essential step for proper vascular tree segmentation and analysis. The region growing method was used to segment the vascular tree of the brain. After extracting the vascular tree, the labeling of individual branches was applied in the algorithm and the appropriate features were extracted. The analysis examined the features of vessel lengths, their diameter and local brightness profiles, which are important indicators of possible stenosis or occlusion of the main vessels of the brain. The output of the algorithm are various modalities of diagnostic, assisted visualizations of the segmented vascular tree. The segmentation and analysis algorithm of cerebrovascular system was created in the MATLAB programming environment.
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Cylinder unit of motocycle two-stroke engine
Stejskal, Miroslav ; Novotný, Pavel (referee) ; Píštěk, Václav (advisor)
Miroslav STEJSKAL Cylinder unit of motorcycle two-stroke engine In the beginning is briefly described two-stroke engine features. Furthermore, according to the set of basic geometric and thermodynamic parameters, the maximum pressure in the cylinder during one engine cycle. For the selected operating modes are carried out strength tests of the upper piston and connecting rod eye. In conclusion, the results are evaluated.
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Modification of a motorcycle spark ignition engine
Poulíček, Matěj ; Ramík, Pavel (referee) ; Kaplan, Zdeněk (advisor)
This diploma thesis is about possible modifications of four-stroke motorcycle petrol engines for increasing power. It also deals with the modification of the Aprilia Leonardo 250 engine from a 2-valve variant to a 4-valve variant, the simulation of this engine and the proposed solution in the GT SUITE. Attention is also paid to the strength control of the crank mechanism of the engine.
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Modifying the Babetta engine
Poulíček, Matěj ; Píštěk, Václav (referee) ; Kaplan, Zdeněk (advisor)
This bachelor thesis is about one of the possible modifications of two-stroke single-cylinder Babetta 210 engine for increasing of power. Further about another manufactured Babetta engines with focus on their pros and cons. Attention is paid also to possible design changes for elimination of drawbacks.
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Powertrain of in-line four-cylinder spark ignition engine
Mačuga, Martin ; Rauscher, Jaroslav (referee) ; Píštěk, Václav (advisor)
According to given to cylinder diameter, stroke and ideal indicator diagram we will investigate with maximum cylinder pressure and further design for proportions piston insider ( piston and piston - pin) as well as piston rod. Then shall do strength calculation upper connecting-rod eye according to given to calculations namely for the select material of piston rod. In the end we evaluate the select material whether is for suggested piston rod fit.
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Stroke mechanism of crane trolley
Dokoupil, Jan ; Pokorný, Přemysl (referee) ; Hloska, Jiří (advisor)
The Bachelor thesis solves design of a stroke mechanism with rated capacity of 20000 kg. The calculations are determined by parameters of hoist, rope drum sizes, its bearing and stress analysis. Drive mechanism is designed and project documentation of mechanism assembly, welding rope drum assembly and the production drawing of head of rope drum are worked.
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Honda B Engines
Smělý, Jiří ; Bradávka, Marek (referee) ; Svída, David (advisor)
This bachelor’s thesis deals with four-stroke internal combustion gasoline engines series B by manufacturer Honda (marked B-series) focusing on their characteristics, construction and use of models in the course of production. Attention is also given to applicability of these engines for racing cars.
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Manipulator for cylinder heeling
Kadlec, Miroslav ; Kalhotka, Jiří (referee) ; Kašpárek, Jaroslav (advisor)
This diploma thesis discusses a proposal of "a manipulator for casting of cylinders". This manipulator is a part of a brushing machine complex, which is not a part of my diploma thesis. With the aid of the manipulator it is possible to exchange cylinders of brushing machines. The computational section includes calculations of traversing mechanism, stroke mechanism and electric drive. Furthermore, a calculation of the main constructional elements is solved. One part of the diploma thesis is, indeed, dedicated to the partial graphic documentation, which is in the range of the assembly reports of the manipulator main parts.
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Stroke mechanism of crane trolley
Juda, Lukáš ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
Bachelor thesis deals with design of stroke mechanism of crane trolley with load capacity 16 000 kg. The thesis contains calculations of basic parameters of stroke (rope diameter, diameters of pulleys, overall dimensions of rope drum, calculation of electric motor, parallel gearbox, frequency inverter, gear couplings and brake of hoist mechanism), strength check of rope drum and calculation of drum bearing. Part of the thesis is assembly drawing especially assembly drawing of complete hoist mechanism and weldment drawing of rope drum.
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