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Cable reel
Bunda, Petr ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
The work deals with construction of electrical cable reel with lifting capacity 800 kg, height of lift 20 m and lift speed 10 m/min. In the work is solved design of cable, cable drum and its placing in frame, strenght calculations of the drum and its shafts, check calculations of bearings and keys, choice of suitable drive and its connection to the drum and fastening the whole to the base. Between parts of the work belong component drawings, parts list and assembly dravings with the main measurements and assembly diagram.
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Alternativní pohony automobilů
Doležal, Ondřej
The bachelor thesis deals with alternative propulsion vehicles. Introductory section focuses on the comparison of conventional and alternative drive. Another part deals with the various alternative drives that are now available. The former, are powered hybrids, followed by electric, hydrogen power, and the conclusion of dedicated vehicles on gaseous fuels. In each chapter describes the functioning of the drive components required and refueling. At the end of each chapter are listed the positives and negatives of the drive. Finally, the study introduces selected types of vehicles with alternative drive. Cars are augmented by technical parameters. Following is an analysis of the functional properties of the vehicle.
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Commercial and economic comparison of traditional and alternative fuels
Dvořáková, Monika ; Sedláček, Jiří (advisor) ; Kočan, Jakub (referee)
Negative predictions about oil stocks combined with the instability in the Middle East encourage development of alternative fuels, which would reduce dependence of the world's economies on oil. The oil and petroleum derivatives are the main dependencies for vehicular traffic, which contributes to the greenhouse gas emissions by a large part. It is therefore necessary to focus on trying to reduce the fuel consumption of cars used for personal transportation. One way to achieve this goal is, for example, to convert existing cars to run on biofuels, buying a hybrid or an electronic vehicle, or, hopefully soon, hydrogen-powered automobile. Obstacles preventing a wider deployment of such fuels and drive systems are often higher purchase and operating costs. These economic disadvantages are being gradually reduced though, and in the future we can surely expect an increase in the number of alternative vehicles on the roads.
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