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Belt conveyor
Dvořáček, Michal ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
The goal of my bachelor work themed Belt conveyor was to design a functional konception inclined belt conveyor to transport a broken concrete to distance 22 meters and supereleavation 5 meteres. The work contains a brief description of basic components of conveyors, calculating part led by norm ČSN ISO 5048 with demermination of main proportion, design of conveyor drive, supervisory part. In my work i focused mainly on solution of hopper and solidity calculation of idler wheel. The work includes project documentation.
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Two-speed gearbox
Kratěna, Jan ; Pokorný, Přemysl (referee) ; Ždímal, Pavel (advisor)
The objective of this work was to create the „Technical Documentation of Two-Speed Transmission“. The submission included a brief content of the demanded work. At first, calculations of gear ratio, tooth system dimensions and module were performed. Subsequently calculations of single tooth wheel loads and their safety were performed. After the tooth system calculation the shaft, bearings and key calculations followed. The Technical Documentation was completed with pictures and charts that illustrate the individual load points. A 3D model of the two-speed transmission inclusive detailed drawings of the individual shafts and tooth wheels were created as a part of the documentation as well.
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Cone gearbox
Steinhauser, Martin ; Pokorný, Přemysl (referee) ; Ždímal, Pavel (advisor)
The contents of this thesis deals with the cone gearbox design and load calculations. Included are the dimension and load calculations of the gear set, shafts, bearings and the keys. Important part of the work are the design drawings and these are attached as an appendix.
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Frame of lift
Seják, Jiří ; Pokorný, Přemysl (referee) ; Mynář, Břetislav (advisor)
This bachelor´s thesis is oriented around several parts of electrical traction passenger lift. The main task is to design the conception of lift frame for the lift machine Sassi Toro with a deflector for a loading capacity of 1000 to 1600 kilos. It´s necessary to make a calculation of traction on driving sheave of machine. On the base of these values we are able to asses a maximum ropes distance between the driving sheave and deflector.
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Trenchless Technologies of Communication Building, Microtunneling
Javůrek, František ; Pokorný, Přemysl (referee) ; Kašpárek, Jaroslav (advisor)
The target of submitted work was to sum up a view of current methods and the machines for the building of communications by trenchless technologies and to conduct a critical analysis each technologies parallely. Trenchless methods belong to the high-developing divisions nowadays. The major advantage these ones is serious decline unfavourable impacts which have common building of transportation along the route and the environment especially through the cities and the villages. The base of these technologies of building were described and depicted by picture firstly. Then the companies were divided and the parameters of machines had been compiled into the charts.
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Horizontal belt conveyor
Šmotlák, Juraj ; Pokorný, Přemysl (referee) ; Špička, Jiří (advisor)
The point of this bachelor’s thesis is suggestion construction of horizontal belt conveyor 50 meters long with transport capacity 160 tons per hour. The rubble is transported material. This project contains functional calculation and conveyor main proportions determination, drive suggestion and driven shaft fortress calculation.
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Crawler undercarriage for building machines
Richtr, Pavel ; Pokorný, Přemysl (referee) ; Kašpárek, Jaroslav (advisor)
The point of the bachelor’s thesis is to recapitulate pieces of knowledge about types of crawler undercarriages to the weight of 10 tons, make survey of application various types of undercarriages for concrete types of machines, to give and confront properties of undercarriages and tracks in the light of weight of machine and operating specifications.
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Model Ranges Analysis of Excavators more than 20 tons
Šimíček, Václav ; Pokorný, Přemysl (referee) ; Kašpárek, Jaroslav (advisor)
The aim of this study is to work out the summary of present building mobile machines – excavators. The analysis contains technical and operating parameters of over 20 tons heavy excavater from home and foreign manufactures. Excavators are dividet into groups according to their weight. In each group there are compared qualities of the machines and then tables and graphs will be created.
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