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Steel structure for the the stationary hydraulic unit
Petr, Tomáš ; Pokorný, Jan (referee) ; Pokorný, Přemysl (advisor)
The main theme of this diploma thesis is a description and a strength analysis of several steel structures of valve frames used by Bosch Rexroth, s. r. o. The first part sums up possibilities of fastening of hydraulic control elements. Furthermore, current types of valve frames were described. The strength analysis of three steel structures was output of using the finite elements method. The result of these analysis was the determination of the loads and critical points of individual structures. In the end of this study, new structures for one block frame were designed to modify the critical locations of the original solution.
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Conceptual design of tower crane 8 tonne
Honc, Robert ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
The Bachelor thesis deals with conceptual design of tower crane with lifting capacity 8 [t] and with design of its basic parametrs. Thesis includes design of the basic parametrs of the crane, conceptual design of the crane, crane lifting capacity calculations depending on the lenght of radius, plotting this dependence and drawing of crane.
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The manipulator for a workshop
Hlupík, Marek ; Zeizinger, Lukáš (referee) ; Pokorný, Přemysl (advisor)
This bachelor thesis is focused on the design of a mobile manipulator for lifting and moving a motor unit. In the theoretical part of the work is a research of current mobile manipulators for handling the motors. The practical part of the work includes the conceptual design of the manipulator, dimensional, functional and strength calculations for the designed device and drawing documentation.
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Pillar jib crane with a load capacity 600 kg
Wojnar, Tomasz ; Daňhel, Oldřich (referee) ; Pokorný, Přemysl (advisor)
The diploma thesis deals with the design of a mobile crane for working in a manufacturing environment. The crane has load capacity 600 kg, length of radius 3 m and load-lifting height 3m. It is equipped with the electric chain hoist with electric trolley, rotation by held by hand of burden. The diploma thesis contains crane design and control and design calculations of important components. Technical drawings are also part of the thesis.
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Analysis of carriage of Top Drive of drilling tower
Kříž, Jakub ; Kubín, Martin (referee) ; Pokorný, Přemysl (advisor)
The subject of this diploma thesis is determination of the cause of crack formation at the carriage Top drive for MND Drilling & Services company. The aim of the diploma thesis is to analyze the load states of the component. Furthermore, the aim is to create a computational model and boundary conditions and to create suggestions of improvements leading to the elimination of cracks. And finally, to evaluate the results of construction improvements..
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Crane Hook Block - Lifting Capacity 20 tons
Štefanec, Tomáš ; Pokorný, Přemysl (referee) ; Škopán, Miroslav (advisor)
Task of this bachelor’s thesis is to propose a crane hook block with lifting capacity of 20 tons. Hook block is part of the mechanism of class M4 according to technical standard ISO 4301-1. It briefly describes what hook block is and summarizes the design solutions of individual structural units. In next part of the thesis there is a design and calculation of the most important parts of the hook block due to function. The content is also a choice of purchased components. Thesis appendices consist of drawing of the whole assembly, lists of items and drawing of crossmember.
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Model ranges analysis of forest harvesters
Dlužanský, Tomáš ; Pokorný, Přemysl (referee) ; Kašpárek, Jaroslav (advisor)
In the bachelor’s thesis is made the basic division of harvesters according to types of chassis, technology process of trees and sizes of harvesters. The next point of thesis is about construction of harvesters and about mechanical parts, especially harvester heads. In the next part division of some operational and technical arguments of Czech machines and foreign machines is made. There was critical classification of machines in groups, on the basis of these arguments. Critique was oriented mainly on wheel harvesters. This group was chosen because of its biggest representation in Czech Republic. Some structural specialities of harvesters and progress of harvester‘s technique were presented.
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Conception of horizontal wood splitting device
Mikl, Marek ; Hloušek, David (referee) ; Pokorný, Přemysl (advisor)
The aim of the bachelor thesis is a brief research of wood splitting machines and splitting tools, then it was the task to create own design of the horizontal wood splitting machine with the use of splitting grid according to the given parameters. The thesis is divided into four chapters. In the first chapter, the research of splitting machines was solved, in the second chapter the machine design wich was made itself, in the third chapter the strength analysis of important machine parts and in the last part the control functional calculations were made.
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Design of Conveyor Semi-Trailer
Nepovím, Ondřej ; Kovář, Stanislav (referee) ; Pokorný, Přemysl (advisor)
The first part of the thesis focuses on a research study of high-strength steels. The thesis also includes a conceptual design of the supporting structure of a transshipment trailer, which uses high-strength materials. This design is compatible with the Herkul trailer produced by the company NovaSteel s. r. o. and distributed by the sales network of Romill Brno, spol. s r.o. In its final part, the thesis deals with a stress analysis of the proposed design of the transshipment trailer. Stress-strength and deformation tests were carried out by means of the finite element method.
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