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Proposal of a vertical wood splitting device
Ptáček, Josef ; Baláž, Adam (referee) ; Zeizinger, Lukáš (advisor)
This bachelor thesis deals with the research of components, types of structures and the functioning of the whole system in order to design a vertical hydraulic splitting device that uses the hydraulic circuit of a tractor. The theoretical part focuses on the types of structures and drive methods in the introduction. Then the focus is on the design elements and safety in the operation of the vertical hydraulic splitting device. The last chapter of this part is a detailed investigation of the components that are found in the hydraulic circuit of the given structure. The practical part deals with the design of the hydraulic circuit together with its elements. Subsequently, it deals with the design of the structure according to the specified parameters. Finally, a drawing documentation was created, which includes a drawing of the vertical hydraulic splitting assembly, a drawing of the welding sub-assembly of the frame structure and a profile drawing.
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Energy analysis of motor pump units
Čenč, Samuel ; Štigler, Jaroslav (referee) ; Klas, Roman (advisor)
The bachelor thesis includes description and classification of hydraulic pump units. Individual types of hydraulic pumps, their area of use, advantages and disadvantages, and the method of regulating the output hydraulic parameters are described here. The thesis also includes a brief description of electric drives, whcich are used as a source of mechanical energy to drive hydraulic pumps. The purpose of the first part is to point out that there are two main ways of regulating the output hydraulic parameters. This is the regulation by changing the geometric volume of the hydraulic pump and the regulation by changing the speed of the electric motor. In the main part of the bachelor thesis attention is paid to individual conceptual solutions of hydraulic pump units. The essence of the regulation of hydraulic variables, the principle of operation of regulation in selected representatives regarding their dynamics is explained here. This is followed by experimental verification on real representatives of hydraulic pump units, which enables a deeper insight into the issue of hydraulic power units regulation and the course of electrical and hydraulic variables during the transient state.
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Mixed-flow submersible water pump driven by hydrostatic motor
Para, Marcel ; Ranuša, Matúš (referee) ; Nevrlý, Josef (advisor)
Bachelor thesis solves the problem of a submersible, diagonal hydrostatic pump. This study describes the basic principles of hydraulics and equipment. The possibility of engaging the hydrostatic system as an amphibious vehicle is investigated in the Bachelor thesis. The work is written in cooperation with the sponsor of HYDRAULIC RESEARCH CENTRE, spol. S.r.o., which is part of SPL Holding., Inc.
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Testing of aircraft hydraulic systems
Suk, Filip ; Bencalík, Karol (referee) ; Třetina, Karel (advisor)
My bachelor thesis “Testing of aircraft hydraulic systems“ discusses the problems of testing particular components and complete hydraulic systems. In the first part of my work, there are specified all regulation requirements that are to be fulfilled by hydraulic systems and test conditions for testing of flight control systems. The next parts deal with the way of testing particular hydraulic elements and hydraulic liquids. The last part of my bachelor thesis is dedicated to the testing's principle of hydraulic system of landing gear including a concept for instrumentation.
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Wood-splitting machine
Hoplíček, Štěpán ; Kašpárek, Jaroslav (referee) ; Malášek, Jiří (advisor)
The objectives of bachelor´s thesis are following: Research of known designs of woodsplitting machines, comparison mechanically to hydraulically driven machines, computation and design of own wood-splitting machine. It is designed hydraulic machine with vertical structure. The machine is designed for splitting beech and oak wood with a maximum diameter of 300 mm and length of 1000 mm. It is calculated the maximum splitting force, designed and checked the frame, designed hydraulic circuit and splitting wedge. Bachelor´s thesis contains the assembly drawings of wood-splitting machine and the frame.
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Vertical wood splitting machine
Zimek, Rostislav ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This bachelor thesis deals with the analysis of wood splitting machines. Another task is to make a computational and design a splitting machine. During designing, I draw from the specified parameters, such as the clearance between the wedges 1150 mm, the log diameter 450 mm and the maximum splitting force of 160 kN. Another construction requirement is good machine mobility and vertical construction. Part of the bachelor thesis is a drawing of a splitting machine and a splitting frame together with a drawing of the support frame and the splitting wedge.
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Amphibious off-road car with hydraulic drive
Nožka, Michal ; Vlašic, František (referee) ; Nevrlý, Josef (advisor)
The main purpose of this bachelor's thesis is a feasibility study of an amphibious off-road car with hydraulic drive. The first part of this thesis contains basic theory of amphibious vehicles and hydraulic drives of vehicles. The second part consists of chosen amphibious cars and their comparisons. Part of this thesis also suggests hydraulic components that could be used for construction of this car.
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The engine of a tractor
Mátyás, Attila ; Sedláček, Martin (referee) ; Kašpárek, Jaroslav (advisor)
This thesis deals with the design and selection of a small utility tractor engine unit. The first theoretical part briefly describes tractors with similar weight category, provides an overview of existing tractor brands and their comparison. The second part of this thesis consists of analytical calculations based on the provided parameters of the tractor. Total power will be the sum of the individual power required for the various technical operations during functioning. The last part deals with selecting the suitable engine unit from the available brochures of world manufacturers based on the calculated values.
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Determination of efficiency of hydraulic drive with recuperation
Kobza, Michal ; Robenek, Dětřich (referee) ; Nevrlý, Josef (advisor)
In the first part of the thesis is determined efficacy criterion for the individual operating modes of the experimental stand with energy recovery and subsequently are evaluated the records of individual measurements. Energy savings are calculated with using energy recovery. The second part describes the process of digitizing relative fuel consumption map of the engine. Results are confronted with a real application engine in the road roller Ammann AP 240 H. In addition, the master thesis describes the creation of hydrostatic converter block in the program MATLAB/Simulink 2012b. Creating block can be used in the development of simulation models.
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Hydraulic power unit for the regulation steam turbine
Morávek, Aleš ; Kolesa, Karel (referee) ; Škopán, Miroslav (advisor)
This diploma thesis is focused on the design of high-pressure hydraulic unit to drive a regulation of condensation turbine. The aim is to calculate all the elements of the hydraulic system, piping design and the necessary drawings. The entire assembly consists of purchased parts from other manufacturers. Major oil tank and a safety catch tank is described in detail and will be made, not bought.
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