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Lifting devices of portal crane
Kouřil, Martin ; Malášek, Jiří (referee) ; Pokorný, Přemysl (advisor)
The work is focused on the design of the lifting device of a special gantry crane for handling ships up to 50 tons. Concretly for the structural design of the lifting device, its functional calculation, strength control of the crane traverse and partial drawing documentation.
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Frame of portal crane
Šesták, Jiří ; Zeizinger, Lukáš (referee) ; Pokorný, Přemysl (advisor)
The thesis deals with the structural design of a gantry crane for ship handling. The frame consists of beams which are connected by plate connections and flanges. The girders are of welded box section. The material chosen was S460N steel. The design was based on a combination of loads, which were determined using the loading forces and their respective dynamic coefficients that can act on the frame. The frame design was verified using the finite element method in MSC Apex software. The work also includes a theoretical calculation of the power required to drive the whole crane. A partial drawing documentation is prepared for the proposed structure.
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Lifting equipment for handling the repair
Bednář, Vojtěch ; Zeizinger, Lukáš (referee) ; Škopán, Miroslav (advisor)
The bachelor's thesis is focused on lifting equipment that are used in smaller repair shops and services. In the first theoretical part, a survey of currently used and industrially produced workshop lifting equipment is carried out. In the second part, the design of the workshop gantry crane verified by functional and dimensional calculations is described, and finally the structural solution supplemented by the drawing documentation of the crane.
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Gantry crane
Kriegler, Boleslav ; Škopán, Miroslav (referee) ; Pokorný, Přemysl (advisor)
The work is focusing on design and actual construction of gantry crane, which is constructed for manipulation with ships in ports. The work describes calculation of powers that are put on the crane or describes control of its parts. As an output of the work is considered drawing documentation.
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Stress-strain analysis of crane truss loaded by a force with varying position
Cabaj, Gabriel ; Fuis, Vladimír (referee) ; Vaverka, Jiří (advisor)
The bachelor thesis deals with the stress-strain analysis of the truss of a gantry crane. The theoretical part clarifies the basic concepts of statics, elasticity and strength. The concept of influence lines and its use for solving stress-strain analyses of structures with variable position of the loading force is further presented. The practical part deals with a model 2D example, specifically, the design of a cross section for a simplified model of a gantry crane, which is represented by the truss structure. The results for trusses with different degrees of static indeterminacy are compared. Subsequently, the analytical results are verified by the numerical solution in ANSYS software. In the last analysis, a 3D model of a gantry crane with realistic parameters from available sources is created. Finally, the stress-strain analysis of the gantry crane is performed considering the variable position of the loading force.
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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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Lifting gear of gantry crane
Švéda, Jan ; Kašpárek, Jaroslav (referee) ; Pokorný, Přemysl (advisor)
This bachelor thesis pursues construction and calculation of lifting mechanism of a mobile marine gantry crane intended for hoisting boats with maximum weight of four hundred metric tons. Also necessary solidness calculations of block and tackle are done. Three-dimensional model and design documentation are included.
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Container gantry crane
Straka, Václav ; Malášek, Jiří (referee) ; Pokorný, Přemysl (advisor)
The aim of this bachelor's thesis is the design and construction solution of a rail gantry crane intended for handling and loading of containers located in the space of the container terminal. It is therefore a design of the main supporting components of the crane, including checking the strength of their parts, as well as the design of the chassis part. The output of this bachelor thesis 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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Mathematical modelling with differential equations
Béreš, Lukáš ; Šremr, Jiří (referee) ; Opluštil, Zdeněk (advisor)
Diplomová práce je zaměřena na problematiku nelineárních diferenciálních rovnic. Obsahuje věty důležité k určení chování nelineárního systému pouze za pomoci zlinearizovaného systému, což je následně ukázáno na rovnici matematického kyvadla. Dále se práce zabývá problematikou diferenciálních rovnic se zpoždéním. Pomocí těchto rovnic je možné přesněji popsat některé reálné systémy, především systémy, ve kterých se vyskytují časové prodlevy. Zpoždění ale komplikuje řešitelnost těchto rovnic, což je ukázáno na zjednodušené rovnici portálového jeřábu. Následně je zkoumána oscilace lineární rovnice s nekonstantním zpožděním a nalezení podmínek pro koeficienty rovnice zaručující oscilačnost každého řešení.
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