National Repository of Grey Literature 326 records found  1 - 10nextend  jump to record: Search took 0.01 seconds. 
Optimization Algorithm for the Truss Steel Structures
Zeizinger, Lukáš ; Čorňák,, Štefan (referee) ; Brázda,, Robert (referee) ; Malášek, Jiří (advisor)
The work deals with the optimization of trusses construction building and transport machinery. The goal was to create an algorithm that can design an optimized design. The simulation took place on two experiments involving 52 sets of different entries, which are processed in detail into graphs. One-dimensional target mass or price function is used as part of optimization, but there is also an incorporated multidimensional purpose function. The finite element variation method for the beam system is used for the strength calculation of the truss structure and the genetic algorithm is used for optimization. At the end of the work, specific steps are formulated that lead to the most appropriate algorithm settings.
Continual double-helicoidal mixer
Černý, Jan ; Malach, František (referee) ; Malášek, Jiří (advisor)
This work focuses on the process of mixing particulate materials and the design of the screw mixer for this activity. The theoretical part describes the mixing and properties of particulate matter. Subsequently, individual devices serving for different types of mixing are analyzed. The practical part contains calculations of the main dimensions and the required power consumption. The choice of suitable drive, bearings and gear is followed. Finally, the analysis of the blade shaft load and the strength analysis of the mixer blade using Autodesk Inventor are performed. Part of this work is enclosed drawing documentation of equipment assembly and selected partial components.
Mobile Machineries Used for Grinding of Agregates and Recycled Materials from Building Waste
Soukup, Adam ; Malášek, Jiří (referee) ; Škopán, Miroslav (advisor)
This bachelor thesis is focused on the issue of construction debris recycling. It deals with existing technical solutions regarding to performance, quality and efficiency. It includes a search of existing crushing machines and its individual types. It contains own conceptual design of a small mobile crusher.
Wrapping machine
Kosyk, Ivan ; Malášek, Jiří (referee) ; Kašpárek, Jaroslav (advisor)
The goal of this bachelor thesis is the design of a wrapping machine for EUR pallets with goods. The first part of the work includes a list of current concepts of wrapping machines, possible variants of construction and design solutions with their functions, a description of their advantages and disadvantages. In the second part of the work, the computational solution of the models and the selection of important components of the wrapping machine based on the input and required values are performed.
Dozer of non-homogeneous materials
Sekava, Jan ; Malach, František (referee) ; Malášek, Jiří (advisor)
The aim of the master’s thesis is to design a hydraulically controlled dozer for nonhomogeneous materials. The proposed dozer of non-homogeneous materials is attached to a telehandler. The thesis is divided into a theoretical and practical part. In the theoretical part contains a summary of similar machinery, a description of a telehandler and a summary of possible non-homogeneous materials. The practical part deals with the structural design of the proposed dozer. The design includes selection and justification of the chosen concept, important technical calculations, a scheme of the hydraulic circuit, strength check calculations, and drawing documentation.
Alternative solution and strength check of mechanical screens
Sommer, Matěj ; Malach, František (referee) ; Malášek, Jiří (advisor)
This master’s thesis deals with a new design of bar screens. The goal was to come up with an alternative design to already existing device by INKOS a. s. In the first part, there is a summary of various machines working in similiar conditions. The insights gained by this research influenced the design of the new device. It utilizes well proven solutions from previous projects, but some of these were reworked and a few new functions were added. Second part of the thesis describes the analytical solutions, which were used to determine the forces in the assembly during the operation of the device. Based on the results of these calculations, a strength analysis of important components was performed using the finite element method. The result of this thesis is the design and optimization of new bar screens, including engineering drawings and tools for its further development.
Equipment for installation and service of Spider ILD02
Frühbauer, Jiří ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This Bachelor’s thesis deals with constructional solution and design of handling equipment for assembly and service of Spider ILD02 lawnmower. This thesis presents a discretion and evaluation of several alternatives for given problem, which are followed up by establishment of selected technical parameters. This thesis also consists of selected solution of construction, which is followed up by calculation of handling forces. Conclusion describes calculation of structural load and strength inspection of important construction units. This thesis consists of technical report and drawing documentation. Drawing documentation is supported by model processing in 3D CAD system and also contains assembly drawing of the whole device, turntable shaft, lever shaft, large sprocket hub and housing of the stand.
Wood-splitting machines - aspect of universality
Valach, Tomáš ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
The objective of this bachelor's thesis is to create a research for various design solutions of wood splitting machines and to compare them with respect to their versatility. I.e. ability to process different types of firewood with different dimensions. The second part is the creation of two models and showing their design solutions.
Wood-splitting machines - security aspect
Láznička, David ; Zeizinger, Lukáš (referee) ; Malášek, Jiří (advisor)
The main goals of this bachelor thesis include development and critical research of splitting machines. The main focus is on manufacturers and types of log splitters, where their technical parameters, suitability for use and safety features protecting users are assessed. At the end of the work are the safety requirements set by the standard ČSN EN 609-1. Part of the work is also a 3D model of the splitting machine.
Pillar jib crane
Martinka, Tomáš ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This bachelor thesis deals with the design of an alternative atypical construction of a column crane including important strength calculations according to specified parameters: arm extension length 4000 mm, lift height 8500 mm, load capacity 2000 kg. Part of this work is also elaboration of technical report with analysis of construction, selection of suitable hoist with important calculations. Further draw a construction drawing of the column crane assembly according to the entered parameters and a detailed drawing of the column.

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3 Malásek, Jan
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