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Comparing the Price of a Transportation Structure and the Actual Costs Incurred in Various Stages of Construction
Nezbeda, Jiří ; Zímová, Štěpánka (referee) ; Kosová, Jaroslava (advisor)
This diploma thesis deals with the calculation of the cost of the building work in order to create the price, which at the stage of the contract becomes a selling price, and the costs are fixed as a budget. The subject of this work is to monitor the development of costs in time so that the cost does not exceed the budget and the construction did not get into the negative result. Then set the price by its own methods (item budget, calculation according to budget indicators) and compare the prices and costs thus obtained from different phases of construction between each other and determine the differences. In this work is monitored and compared the cost of a construction contract and its costs in the construction stages. In the practical part,is used the method of direct comparison of cost and price values over time, in the form of different outputs from the controlling program and outputs from compiled item budget and the calculation of the construction. Analyzing the differences between these costs and their evolution over time by more detailed examination of item budgets and cost calculations, they determine the origin of these deviations. In conclusion, is proposed measures for a particular transport structure whitch was handled by the author as"master and co-ordinator of the construction".
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The bridge crane's travel mechanism
Žid, Miroslav ; Nezbeda, Jiří (referee) ; Škopán, Miroslav (advisor)
The aim of this master thesis is to design replacing the central drive of the overhead crane with dislocated drives. It´s a tong crane with the lifting capacity of 63 tons, located inside the hall. In the thesis is processed functional calculation of two types of drives, the associated types of brakes and the coupling element. Next there is a strength control of a new mechanism seat and a selected components. This whole leads to the output, which is the drawing documentation.
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Crane cat of a stoplog handling crane
Oliva, Petr ; Nezbeda, Jiří (referee) ; Škopán, Miroslav (advisor)
This master´s thesis deals with the design of a crane trolley with the main and ancillary lift according to the specified parameters. The aim of the work is the elaboration of technical calculations and drawing documentation. The technical report deals with the design of lifting mechanisms, travelling mechanism and design and strength control of the crane frame. The drawing documentation includes a stroke assembly drawing, a travel assembly drawing, a frame steel structure assembly drawing, and a general crane cat assembly drawing.
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Traveling Carb 36 tons
Kantor, Roman ; Nezbeda, Jiří (referee) ; Mynář, Břetislav (advisor)
Diploma thesis is concerned with the solution of main measurements of the carriage travel which will use for loading and expounding iron scrap. Manipulation with iron scrap will be by electromagnet. Part of calculation includes the computation of travelling apparatus, travelling gearbox and power of electric motor. It also sort out the calculation of the main measurements of lift apparatus, power lift of eletric motor, calculation gearbox and strop. Subseguently deal with calculation of fixity of carriage travel´s framework
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Crane trolley 32 t
Knapec, Tomáš ; Nezbeda, Jiří (referee) ; Škopán, Miroslav (advisor)
This master’s thesis is the design development of crane trolley, which is used to manipulate with scrap material. The target of this thesis is to develop a technical report including calculations of running and lifting gear, strength calculation of frame of trolley and drawings containing assembly of crane trolley and assemblies of running and lifting gear. Desired parameters of this trolley are maximum load capacity 32 000 kg, lifting height of 11 m, working lifting speed up to 10 m/min and working running speed up to 50 m/min.
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Auxiliary crab for overhead foundry crane
Adam, Petr ; Nezbeda, Jiří (referee) ; Kašpárek, Jaroslav (advisor)
This master thesis deals with issue design of crab trolley. Concretely is acted about auxiliary crab trolley with required capacity 65 000 kg. This crab is on overhead crane, which is situated at hall of foundry. In particular chapters is processed design of lifting mechanism and travelling mechanism, which is amended to strength control of frame. This whole leads to output solutions, which is drawing documentation.
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Modular series of workshop mobile portal cranes
Novák, Tomáš ; Nezbeda, Jiří (referee) ; Škopán, Miroslav (advisor)
The Master’s thesis deals with the proposal of a modular series of workshop mobile gantry cranes with a load capacity from 500 kg to 3.200 kg. The introduction deals with the recherche, in which the workshop mobile gantry crane is firstly categorized according to the construction. Then, its parts are described in detail and at the end of the recherche, cranes with similar utility properties are presented. The main part of the work is focused on the proposal of the modular series, the proposal of the load-bearing structure and the strength calculations of the load-bearing parts. At the end of the work, there is a check of calculations according to the FEM model, an estimate of the crane price and a proposal configurator for a quick search of a required crane by a customer. The work includes appendices in which the parameters and calculated values of all gantry cranes of the module series are given.
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Traveller crane 50t - 27m
Daňhel, Oldřich ; Nezbeda, Jiří (referee) ; Kašpárek, Jaroslav (advisor)
This master's thesis deals with the crab of a traveller crane of 50,000 kg load capacity. The aim of the thesis is a functional calculation of travelling and lifting crab mechanisms and strength frame calculation in compliance with applicable ČSN standards and respective literature concerned with the calculations of cranes and their parts. The attached drawings show the crab, lifting and travelling mechanisms.
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Mobile construction crane load capacity 200 kg
Tomeš, Jakub ; Nezbeda, Jiří (referee) ; Škopán, Miroslav (advisor)
This diploma thesis describes mechanical design of mobile construction crane, specified for moving Silka bricks of weight 200 kg. Thesis contains constructing solution of steel frame - boom, column and chassis. Standard purchased components are also defined in this thesis - hydraulic circuits, el. pulley assembly and wheels. Last part of thesis verifies sufficient safety of designed frame using Finite element method. Output of this thesis are mechanical drawings of welded parts of steel frame and assembly drawing of entire crane.
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