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Track Bridge Interaction
Kapounek, Jan ; Kubelka, Jan (referee) ; Plášek, Otto (advisor)
This thesis focuses on the analysis of different approaches to the evaluation of the combined response of bridge structure and continuous welded rail on 5 planned bridges on high-speed railway in the Czech Republic in the stage of Land Use Permission. The output of the analysis of these bridges is the indication and description of problematic points occurring in the methodology as well as the development of recommended steps for the calculation of the combined response of structure and track to variable actions by the method of Complex Analysis for bridges on high-speed lines in the Czech Republic. Based on this recommended procedure, a simple bridge model is created.
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Design of single-purpose machine for pressing bearings in pulleys
Roupec, Michal ; Továrek, David (referee) ; Bradáč, František (advisor)
Purpose of this thesis is to make constructional modification of single-purpose pressing machine for Huisman Konstrukce, s.r.o. company. Present machine is non-operational and not enough powerful for present requests of workshop. Intended modifications are to describe present condition of machine, find present requirements and design simple modifications. All modifications are checked by calculations and sketched in shop drawings. There were also made alternative options of modification to show machine more versatile and automatic.
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Vibration diagnostics of bearings
Navrátil, Pavel ; Mazal, Pavel (referee) ; Klapka, Milan (advisor)
This bachelor’s thesis introduces the basic principles of vibrodiagnostic methods and their importance for individual fase of bearing’s damage. The selected methods studied are: acoustic emission, SPM (shock pulse method), SEE (spectral emission energy), envelope method, High frequency emission, Crest factor, Kurtosis factor and special method for slow-motion machines Adash Compressed Time.
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Pump design
Mizera, Ladislav ; Svozil, Jan (referee) ; Klas, Roman (advisor)
This thesis considers the characteristic of hydrodynamic pumps. It describes the activity of these pumps and it shows the particular characteristic curves. Then the hydrodynamic pumps are divided and described. The biggest attention is attended to the vertical multistage centrifugal pump and shaft seal.
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Engineering design of the hydraulic press for bearings for bikes
Vichr, Tomáš ; Brandejs, Jan (referee) ; Klapka, Milan (advisor)
This bachelor thesis concerns design of a bearing replacement device in the motorcycles wheels. The aim was to develop an affordable and reliable home appliance. In general research are defined the imperfections of commonly available devices on the market. Based on that are designed three conceptual proposals as a solution of these problems. The most suitable one is chosen and the critical crucial points are verified as well as the production price.
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Design of magnetic drilling machine
Jun, Lukáš ; Tůma, Zdeněk (referee) ; Tůma, Jiří (advisor)
The thesis is focused on a specific type of drilling machines, the magnetic drills press. These machines are typical for their magnetic base and are used mainly to machine magnetic materials, nonetheless, with suitable accessories, also the non-magnetic materials can be machined. The first part of the thesis begins with a description of the individual parts of the magnetic drill, their types and an overview of the accessories. The second part of the thesis contains the design of the drill itself. Cutting conditions for a 20mm twist drill and a 60mm annular cutter are defined. Based on the cutting conditions the motor is selected, then the design of a gearbox, selection of bearings and the whole assembly of the gearbox is described. Calculations of gearing, 3d model, drawing of assembly and two parts are attached with the thesis.
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Vibration monitoring from rolling bearing
Langr, Pavel ; Klusáček, Stanislav (referee) ; Štohl, Radek (advisor)
This bachelor thesis deals with problematics of vibration measurement and diagnosis of rolling bearings. The first part is focused on describing basic terms, defines what vibration and bearings are and how vibration occur as a result of ball bearing defects. The second part of this bachelor thesis deals with vibration diagnosis according to ČSN ISO 10816 standard and describes basic principles and rules, to comply with this standard. Third part of the thesis deals with instrumentation of IFM electronic company, used for vibration diagnosis. The last part is attended to design and realiyation of laboratory exercise, which is meant to familiarize with ball bearing vibration problematics.
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Chain Conveyor
Štěpán, Marek ; Dlesk, Daniel (referee) ; Škopán, Miroslav (advisor)
The aim of this diploma thesis is to design the control picking unit for the storage system Multitower. This work deals with the storage of rods, safety requirements and design of structures. The design part solves the actuator design, choice of chain tensioning system and torque transmission. The strength analysis of important components is solved in last part.
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Influence of the surface roughness features on the next rolling bearing element
Saksa, Vladimír ; Zapletal, Tomáš (referee) ; Košťál, David (advisor)
This bachelor thesis deals with investigation of influence of the surface roughness features on the next rolling bearing elements. It researches changes in the film profile entering into the contact. This thesis describes also elastohydrodynamic lubrication regime by witch each rolling bearing works as well as the difference between fully flooded and starvation contact of rolling ring with rolling bearing element. The part of the thesis is the experiment using different kinds of lubricats from which is visible really influence of these contacts. This experiment is realized on the contact simulator and the film thickness is measured using method of optical interferometry.
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