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Crane crab traverse mechanism load 25 t
Zicho, Jan ; Pokorný, Přemysl (referee) ; Škopán, Miroslav (advisor)
The bachelor's thesis deals with the construction concept of the crane crab travel mechanism for a bridge crane with a load capacity of 25 000 kg. The research section deals with construction solutions used on the travel mechanism of crane crab. The thesis contains a construction concept of individual components of the travel mechanism which include wheels, motor and transmission, brake, driveshafts, bearings, and frame. Subsequently, this thesis contains a calculation of these components and their check-up. The output of the thesis is a technical documentation containing the drawing of selected components and assembly drawing.
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Development of color filter wheel
Kilián, Ondřej ; Koutecký, Tomáš (referee) ; Hurník, Jakub (advisor)
This bachelor thesis aims to showcase designing process of the device and control software and subsequent realisation of a filter wheel for research applications, which is designed specifically for a ZWO ASI 1600MM camera, ZEISS Interlock® Compact lenses and optic filters produced by company Schneider-Kreuznach. This configuration of camera and lenses doesn’t allow use of existing products on the market.
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History of Civil Aviation 1970-2000
Zubrvalčík, Jan ; Šplíchal, Miroslav (referee) ; Chlebek, Jiří (advisor)
The main aim of this bachelor‘s thesis is utilize consice summary of history of civil aviation between year 1970 to 2000 and compare their performance. This era is typical with out-set of airplanes with large capacity and new construction solutions. This thesis is focused on planes for long distance with large capacity, but also on planes for middle and short distances too. Thesis is divided by range of airplanes and special charter is about supersonic civil planes.
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Off-board systems for top-of-rail lubrication
Málek, Jan ; Kvarda, Daniel (referee) ; Galas, Radovan (advisor)
This bachelor’s thesis is focused on rail off-board lubrication system. The main part of this thesis is explaining of function and design few certain lubrication systems. In this thesis are explained aspects of wheel-rail contact, such as types and parts of rail, adhesion, slip, creep–traction diagram. Another part of this thesis is description of few certain lubrication system for top of rail and gauge face application. In this thesis are explained product of major companies of friction management industries such as SKF-Lincoln, Whitmore, Loram. Additional part of this thesis speaks about usage and development of this devices in Czech Republic. Output of this thesis is conclusion about advantages and disadvantages these certain devices.
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The effect of climate conditions on wheel-rail contact adhesion
Nohel, Rostislav ; Horák, Zdeněk (referee) ; Omasta, Milan (advisor)
Presented master’s thesis is focused on the experimental research of influence of climate conditions on wheel-rail adhesion, where climate conditions are meant two parameters: ambient air temperature and air humidity. These parameters always affect wheel-raid contact and their values change significantly during the year. For presented experimental research was used tribometer Mini Traction Machine (MTM) in configuration „ball on disc“. For determination of influence climate conditions was first found out the influence of air humidity on adhesion at certain temperatures, which varied between (1 to 50) °C. These experiments were performed for two types of discs, where one disc was exposed to leaf extract contamination. After that was assembled influence of both parameters (air humidity and ambient air temperature) on adhesion in the form of a 3D map, where were distinctioned states, when condensation has occured and when didn‘t. Obtained results in this thesis will be used for optimalization of rail vehicle control systems.
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Transfer table electromechanical
Přecechtílek, Pavel ; Malach, František (referee) ; Malášek, Jiří (advisor)
The aim of this thesis is to design a proposal of Transfer table electromechanical earmarked for transporting packs of sheets of tin with balance-sheet of electromechanical and electrohydraulic construction and to make important technical calculations. The introduction contains a description of the used constructional solution with the description of the individual parts of the transfer table and survey used components from different producer. The work includes functional calculations, which mainly includes the design and control of power running and lifting gear, calculate speeds and lift loads, the chain drives and other assemblies Transverse. Conclusion of this work deals with the assessment of the frame strength of the Transfer table using the finite element method. Further the work deals with the assessment of the maximum capacity of the machine and with any design modifications. The work also contains a design documentation, especially the plan of the Transfer table and detailed drawings of the frame and eccentric casters.
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Design of Experimental Stand for the Study of Railway Vehicles Sanding
Galas, Radovan ; Hruška, Marek (referee) ; Šperka, Petr (advisor)
Presented master’s thesis describes the design and the implementation of an experimental device used for the study of tribological aspects of wheel-rail contact. In this work, the reader will first learn the fundamentals such as adhesion, slip, traction curve, etc. Subsequently, the work is describing devices that are used for the study of wheel-rail contact around the world. This section is followed by the author proposed solution. The result is a twin disc device in the scale of 1:3. The device allows determining traction characteristics for different environmental conditions (presence of water, sand and oil in contact for different temperatures) and various operating parameters (contact pressure and speed). A part of this work are also the validation experiments and complete design documentation.
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Anylytical solver for strength calculation of railway axles
Fišer, Petr ; Náhlík, Luboš (referee) ; Vaverka, Michal (advisor)
This master thesis deals with wheel set axles of rail vehicles, their design and methods of implementation stress analysis. In this work, I created a powered locomotive wheel set: axle and wheel. For the purpose of the design department of the Bonatrans Group a.s. company I developed an analytical solver, which allows creating stress analysis, which will be used for verifying finished design and in addition it allows printing of stress analysis as report for the railway´s offices. Next step was a stress analysis of this design of axle in this analytical solver.
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Solution technology of part "solid belt pulley of hoist-elevator".
Procházka, Zdeněk ; Polzer, Aleš (referee) ; Kalivoda, Milan (advisor)
This diploma work deals with a production technology of a tractive bearer rope wheel as a part of a hoist-elevator. A design and technological analysis of the components is studied, including a functional analysis of the grooves, a selection of the material of semi-manufactured blank, a selection of the cutting materials and production machines also. New CNC programs for production of the part have been worked-out. The work includes some suggestions for testing of the part function.
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