|
|
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.
|
|
|
Gearbox for portable power generator
Kolka, Roman ; Hubáček,, Tomáš (referee) ; Bradáč, František (advisor)
The submitted project deals with a complete design of a gearbox of a portable ground power generator designed for preflight preparation of helicopters. The gearbox has been designed to meet given specifications, which are based on required electrical parameters of the entire power unit and with regards to parameters of driving turbine engine. The introductory section deals with a kinematical design of transmission gears with regards to required parameters and design constraints. The kinematical design determines whole concept and resulting form of the gearbox. Next part deals with optimization of gearing, the design of wheel bearing, and design of oil system. The implementation part of the project consists in the engineering design of the gearbox, which was made in 3D environment Pro/Engineer. The design is reviewed and first operational results of manufactured and tested gearbox are discussed in the concluding section of this work.
|
|
|
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.
|
|
| |
|
|
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.
|
|
|
Axles of modern cars
Tichý, Ondřej ; Vopařil, Jan (referee) ; Kučera, Pavel (advisor)
This bachelor thesis focuses on desicribing of common axle types, their modern solutions and modifications, which are brought by a usage of electronic and hydraulic systems, and discusses their properties as well. The next part of the thesis deals with types of axle differentials and their modern electronic substitutes. The most common brake types, brake assistant systems and main types of vehicle wheels are mentioned in the last chapter.
|
|
|
Open-wheel aerodynamics
Babinec, Viktor ; Vančura, Jan (referee) ; Čavoj, Ondřej (advisor)
This bachelors thesis is focused on review of the aerodynamic charakteristics of the rotating wheels for formula cars. This paper describes the nature, origin and development of flow structures in the wheel area, affecting other parts of the vehicle. To create a holistic view of the aerodynamic charakteristics of the wheel, it is necesary to include impacts on changing wheel geometry while driving, which significantly changes the nature of the flow. Among the observed effects include deformation of the wheel, its camber, yaw and axle height.
|
|
|
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.
|
|
|
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.
|
|
|
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.
|
guest ::
