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Planetary, cycloidal, worm, screw, harmonic gearboxes
Čišecký, Damián ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This bachelor's thesis focuses on planetary, cycloidal, harmonic, screw and worm gearboxes, providing an insight into the design, calculations and applications of these mechanisms in the transmission of mechanical energy. It contains clear schematic drawings, construction documents and calculations of transmission ratios, with an emphasis on current manufacturers and technical parameters.
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Topology optimization of crane hook
Kabelka, Jaroslav ; Pokorný, Přemysl (referee) ; Zeizinger, Lukáš (advisor)
This final bachelor's thesis discusses the importance of topological optimization in solutions with regard to crane hooks. The thesis deals covers the theoretical part and the computational practical part of a specific crane hook. In the theoretical part, in addition to optimization methods, models, boundary conditions and the softwares, various types of hooks, their construction and properties are examined. In the computational part, the thesis then deals with a specific case of topological optimization of a crane hook, followed by validation and comparison of the obtained results.
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Crane crab 20 t
Dubovický, Martin ; Malášek, Jiří (referee) ; Pokorný, Přemysl (advisor)
This bachelor thesis focuses on the design of a crane trolley with a capacity of 20,000 kg. The work includes the design of the lifting mechanism, such as the design and inspection of the rope, the design of the dimensions of pulleys and the rope drum. Furthermore, the thesis includes a strength check of the rope drum, design of the lifting drive, calculation of the running gear, and a basic strength check of the crane trolley frame.
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Belt conveyor for brick rubble
Roušavý, Filip ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This bachelor's thesis deals with the design of a belt conveyor for transporting brick rubble. The main objective of the thesis is to create an efficient conveyor system that meets the specific requirements of the brick industry. The work includes the classification of belt conveyors, analysis of structural elements, and selection of suitable components. Furthermore, detailed calculations are performed concerning the supporting stations, required motor power, and belt dimensions. The thesis also provides an overview of major belt conveyor manufacturers and describes various types of tensioning and cleaning devices. The result is a design of a belt conveyor that ensures reliable and efficient transportation of brick rubble.
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Scarificator for mechanical soil preparation
Mašek, Petr ; Pokorný, Přemysl (referee) ; Mergl, Václav (advisor)
The bachelor's thesis deals with the design of a mounted disc scarificator connected in the frontal three-point hitch of a universal agricultural tractor with the performance class up to 160 kW. The scarificator working parts are the disc trencher and the ripper knife. The introductory part includes a research analysis which concerns with reforestation and the mechanization used for it. The next part focuses on the conceptual design of the scarificator, the necessary power calculation for the disc trencher drive and the determination of the drive type. In the final part, the thesis focuses on the stress analysis of the machine frame. The work also includes drawing documentation.
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Design of the timber trailer
Jílek, Jan ; Pokorný, Přemysl (referee) ; Mergl, Václav (advisor)
The bachelor thesis deals with the design of the structure of a forwarding trailer and analytical stress calculations at specific joints. The first part of the thesis focuses on describing the components, researching similar trailer structures, and summarizing legislative requirements. Furthermore, the structure of the designed trailer is described, and analytical calculations are performed. The thesis also includes drawing documentation of the assembly and subassembly of the welded frame.
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Wood chip belt conveyor
Kamínek, Jan ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
The bachelor's thesis in the introduction contains research on the topic of the belt conveyor and an analysis of the anchoring of the conveyor. In the following chapters there is a design and functional calculation of a belt conveyor for transporting wood chips with an assumed specific weight 650 kgm-3. The belt conveyor was designed with a transport distance of 19 m, a height difference of 3 m and a transport performance of 19,000 kg·h-1. A more detailed analysis of the properties of the transported material is also carried out. Finally, the strength of the driven and drive shaft is verified by calculation.
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Alternatives types of hoists
Gröger, Matěj ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This bachelor’s thesis focuses on different types of hoists. The introductory part describes the use and function of these lifting devices including the use of suitable types of chains. Following this, the design of a self-locking differential pulley with lifting capacity of 750 kg and lifting height of 9 300 mm is developed. The design includes strength calculations of important parts of the differential pulley. Drawing documentation is attached at the end.
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Portal crane 80 t
Fric, Marek ; Zeizinger, Lukáš (referee) ; Pokorný, Přemysl (advisor)
The aim of this bachelor thesis is the structural design of the frame and the calculation of the lifting gear of a gantry crane moving on rails on container terminals. Thus, it is the design of the main load-bearing components of the crane, including their strength control. Furthermore, the work includes the design and execution of functional calculations for the crane hoisting gear as well as drawing documentation.
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Magnetic separators of ferromagnetic materials
Koumal, Adam ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
The aim of the bachelor thesis is to prepare a technical report regarding an overview of selected magnetic separators, their principles and manufacturers. Design of a design solution for a magnetic separator for industrial waste. Based on the assessment of the individual constructions of the separators, a specific construction variant is selected. Subsequently, essential calculations for the design of the separator are carried out. Part of this work is the drawing documentation of the assembly of the machine and selected parts.
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