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Tower Cranes Models Review
Kuděla, Jan ; Škopán, Miroslav (referee) ; Pokorný, Přemysl (advisor)
This Bachelor thesis is focused on tower cranes with a working range over 40 meters. These cranes are composed of specific sections. In the first part of the thesis a more detailed description of tower cranes is presented. Next topic, that is being discussed, is three structural types of tower cranes with upper turntable bodies that are being made nowadays. In the overview, present world producers of tower cranes are listed. Companies like Liebherr, Potain, Linden Comansa, Kroll and Raimondi are described in more detail. Lastly, different models of tower cranes from leading producers in selected parameters are being compared.
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Design of doublebeam of bridge crane 8 tonne
Bobčík, Martin ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
This bachelor thesis deals with design of doublebeam of bridge crane (8 tonne). The purpose of this thesis is to design the main parameters of the crane bridge. First of all, I chose from the catalog wire rope hoist. I proposed preliminary dimensions of mainbeam and crossbeam. I made strength check of mainbeam and crossbeam. For attachment mainbeam and crossbeam I chose fitted bolts. I calculated required number of fitted bolts M12. From the standards I chose wheels. I checked the wheels to maximum contact pressure and service life. I chose bearings from catalog SKF. I checked the bearings to service life. I proposed dimension of shafts. From the rolling resistance and friction, I calculated the power output of the engine. At the last I proposed cable trolleys and control of the crane.
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Conceptual design of bridge crane 8 tonne
Franc, Šimon ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
This bachelor thesis deals with conceptual scheme of a bridge crane with carrying capacity of 8 tons. Intention of this thesis is to scheme out the main specifications and size of this bridge crane. First of all we design and calculate the main bridge girder. Afterwards we calculate and design the cross bars and the travelling wheels. At last the desigh of an electromotor for powering the movement of the bridge crane takes its place.
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Mobile Cranes Models Review
Jonák, Vojtěch ; Škopán, Miroslav (referee) ; Pokorný, Přemysl (advisor)
Bachelor’s thesis focuses on the comparison of mobile tower cranes. These cranes with a horizontal jib, which is located on the vertical tower, are usually self-erecting and have a chassis where can to move when are folded. The introduction gives a division according to a type of the chassis and a construction of the crane itself. Further, there are described the most important manufacturers of the cranes and their manufactured models. The tables show the comparison of different models or whole series of models in selected parameters.
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Conceptual design of portal crane 4 tonne
Lopata, Zbyněk ; Malášek, Jiří (referee) ; Kubín, Martin (advisor)
In my bachelor´s thesis I deal with a concept suggestion of portal crane with a lifting capacity of 4 tonnes. The bachelor´s thesis is aimed at suggestion of basic parameters of crane, hoist, main girder, shorings, rails, travelling wheels and travelling bears. Bachelor´s thesis also contains control calculation of construction of crane and travelling bears. In practical part of thesis drawing of crane and three dimensional prototype of crane is claused.
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Conceptual design of tower crane 8 tonne
Honc, Robert ; Pokorný, Přemysl (referee) ; Kubín, Martin (advisor)
The Bachelor thesis deals with conceptual design of tower crane with lifting capacity 8 [t] and with design of its basic parametrs. Thesis includes design of the basic parametrs of the crane, conceptual design of the crane, crane lifting capacity calculations depending on the lenght of radius, plotting this dependence and drawing of crane.
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Mobile Cranes Models Review
Škaloud, Martin ; Škopán, Miroslav (referee) ; Pokorný, Přemysl (advisor)
The thesis deals with mobile cranes with a lifting capacity of 50 tonnes. The introduction describes the basic concepts related to these machines. Followed by a general cranes overview. This thesis focuses on a brief description of wheeled and tracked mobile cranes. It describes the undercarriage of the wheeled cranes and undercarriage of the tracked crane and crawler crane with it’s basic elements. After that is described the structure of the upper rotating wheel and track mobile truck crane. In the overview are specified the current global producers and companies that already do not produce these machines. Follows the short overview about companies - Grove, Liebherr, Manitowoc, Tadano, Terex-Demag and CKD. In the next part are written more details about company Grove interesting systems which are used in theirs products. At the end of this work are given a table showing the mobile crane on a brand-wheeled chassis with a capacity of over 50 the summary table with belt manufacturers of mobile cranes with a lifting capacity exceeding 50 tonnes.
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Rowanberry - nutritional characteristic and utilization in grocery
Andrlová, Kateřina ; Vítová, Eva (referee) ; Vespalcová, Milena (advisor)
Bachelor elaborate is focused on one the less used species of small fruits - rowanberries. It gives an overview of the particular biologically active substances in this fruit and the use of the fruits in the human diet. Introduction is focused on the botanical description of rowan - Sorbus. There are presented the best known species of genus rowan. The greatest attention is paid to the type of Sorbus aucuparia which provide sweet variety and nutritional value of the fresh fruits. The second part is devoted to the description of biologically active substances contained in food rowanberries. The most valuable of them are vitamin C, flavonoid compounds (quercetin, campferol), phenolic compounds (chlorogenic acid) and pectins. Possibility of processing rowanberries in a variety of products are presented in next part. They are made of these compotes, jams, candied fruits, jellies and juice. Can be used for production of wine, cider and liqueur. In conclusion, there are described methods for determination the content of selected substances rowanberries (vitamin C, pectins). There are mentioned here primarily manual methods.
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