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Crane hook block - lifting capacity 25 tons
Šanca, Kristián ; Trčka, Tomáš (referee) ; Malášek, Jiří (advisor)
The crane block is the lower part of the hoist. It is designed to fulfill a load capacity of 25,000 kg, while being safe and as light as possible. The work describes the principle of the hoist. A design solution is chosen in which two ropes are wound on a drum. The calculation of the hoist is in the calculation part, the components of the hoist are further described and calculated, using basic strength calculations. Attached is a drawing of the assembly and important details.
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Overview of current spaceships
Špačková, Jana ; Daněk, Vladimír (referee) ; Zikmund, Pavel (advisor)
Target of this work is to create an overview of commonly used and in this time developed transports used for carrying payload to space and comparing these transportation means. First part of the work is divided into three sections, rockets reaching the Earth’s orbit, rockets flying bellow it and other means of space transport. These sections are further sorted by states and its stage of development they are currently in. Second part of the work is focused on comparing previously described transports from the perspective of safety, power and also costs needed for running and manufacturing them. In the end there are results from the comparing section of this work and comments on the probable path of the near future development of the space transportation.
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Design of General Service Crane, used for manipulation on the deck of the vessel
Dlužanský, Tomáš ; Horák, Michal (referee) ; Pokorný, Přemysl (advisor)
This master's thesis makes a brief comparison of design variants of cranes for general use on the deck of a vessel. Further, this thesis deals with a design of a crane with a telescopic jib and a single knuckle. An important part of the crane’s design is its kinematic solution, which was modified in the design phase. The last step of a simplified analytical calculation of the jib for design steel construction is given. This preliminary calculation is the starting point for a FEM model and for the following FEM analysis. A stress control is made according to the Lloyd's Register of Shipping agency’s standard for lifting appliances in marine environment and also according to the recommendations of Huisman company. A part of the proposed solution is a selection of main components of the crane. The master’s thesis contains a summary of some operational and other information which characterize possibilities of the crane’s use. This thesis also includes source materials for 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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Travelling crab
Pokorný, Emil ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This thesis deals with calculation and proposal hoisting mechanism of travelling crab with lifting capacity of 25 000 kg. In this thesis are proposed elements of rope system, which include rope, pulleys and rope drum. Part of the thesis is also the strength calculation of the sheave block and proposal of individual components of the lifting mechanism drive such as engine, gearbox and brake. The output of this thesis is a drawing documentation including drawing of the sheave block assembly and drawings of selected details.
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Mobil cranes
Čechmánek, Lukáš ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
This bachelor thesis contains general analysis of automobile cranes. The main part is dedicated to the description of particular construction elements and compares selected models of Liebherr, Manitowoc Grove, Tadano Faun and Terex Demag manufacturers. There is also a brief history of development and categorization of automobile cranes.
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Travelling Crab
Elsner, Ondřej ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This thesis deals with proposal hoisting mechanism of travelling crab with lifting capacity of 50 000 kg. The calculations and proposal of bearing elements of cable system such as steel rope, pulley and cable drum are included in the thesis. Strenght and dimensional calculation and drawing documentation are made for each imporatnt part of sheave block. The integral part of the thesis constitutes the driving mechanism as motor, gearbox and brake.
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Mobil cranes with lifting capacity from 200 to 1200 tons
Novák, Tomáš ; Pokorný, Přemysl (referee) ; Škopán, Miroslav (advisor)
The bachelor thesis deals with the development, construction and current types of mobile cranes with a load capacity from 200 to 1200 tonnes. The introductory pages of the thesis deal with the basic concepts in the field of cranes as well as with the brief history of the origin of these machines. The main part of the work focuses on categorization, introduction of the world's major manufacturers, a detailed description of the parts of the mobile crane, and the differences in the technologies used by the individual manufacturers. The manufacturers mentioned are companies Liebherr, Tadano Faun, Tadano Demag, Manitowoc Grove, Link-Belt, Sany and XCMG. The next part of the thesis deals with an overview of the individual manufacturers‘ concepts and their specific parameters. The last part of the thesis consists of several clearly arranged charts that compare the selected models according to their maximum load capacity, maximum hoist height, maximum radius, and other selected parameters. The thesis also includes chapters focused on the specifics of the operation and the maintenance of mobile cranes and determines development trends.
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Travelling crab
Odehnal, Jiří ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This Bachelor’s thesis deals with the design of a crane crab lifting gear with a load capacity of 10, 000 kg. Based on the entered parameters, the rope, rope drum, balancing pulley, and the block pulley’s main body parts, such as guide pulley, piston pins, side rails and crosspiece, are calculated. The thesis also includes a strength check of the rope drum and the individual parts of the block pulley, the draft of the lifting gear’s drive as well as the drawings of the block pulley set and selected parts.
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Steel structure for the the stationary hydraulic unit
Petr, Tomáš ; Pokorný, Jan (referee) ; Pokorný, Přemysl (advisor)
The main theme of this diploma thesis is a description and a strength analysis of several steel structures of valve frames used by Bosch Rexroth, s. r. o. The first part sums up possibilities of fastening of hydraulic control elements. Furthermore, current types of valve frames were described. The strength analysis of three steel structures was output of using the finite elements method. The result of these analysis was the determination of the loads and critical points of individual structures. In the end of this study, new structures for one block frame were designed to modify the critical locations of the original solution.
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