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Design of mini backhoe
Vorlíček, Vít ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
The aim of the bachelor thesis is to design a small tractor backhoe and aggregate it into a three-point suspension system with a maximum tearing force of at least 20 KN. This thesis is divided into six chapters and it deals with the division of excavator equipment, parts of excavation and analysis of competition, alternatives of design solution, design of own concept, functional calculations and strength calculations.
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Piping systems for district heating
Malach, Tomáš ; Horák, Petr (referee) ; Hirš, Jiří (advisor)
In the first part of master thesis is presented general introduction to district heating system (DHS) and hydraulic calculation for DHS. The next part deals with analysis operation of DHS and the pressure diagram for certain time interval. Subsequently, the thermohydraulic characteristics for the hydraulic main branch (comparing manual calculation with software calculation) and also the selected thermal and hydraulic characteristics for the whole DHS are shown. The last part is focused on the determination of the amount of heat supplied based on the ultrasonic flowmeter and the temperature probes. Subsequently, the computer simulation is also carried out, aiming at approximating the real heat supply from heat source to solved thermal network in winter.
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Design of a hydraulic tester for determining the axle play of vehicles
Tůma, Vladimír ; Sliwková, Petra (referee) ; Sedlák, Josef (advisor)
The goal of this thesis is a design of a hydraulic tester for detection of the clearance of the truck front axle at the lines of technical inspection stations. The beginning of the thesis is dedicated to an introduction of the company, which is the first manufacturer of such device in the Czech Republic. The main content of the paper is the analysis of the current technological process of production from purchasing the material to the final assembly at the customer. In the last part of the thesis the technological innovation, which makes the current procedure more efficient as well as its financial assessment, is described.
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Mobile Wood Splitter
Baroň, Lukáš ; Kašpárek, Jaroslav (referee) ; Škopán, Miroslav (advisor)
The aim of this bachelor thesis is the design a few variants of wood splitter and substantiate for the selection of the most suitable design to the requirements. Further then suggestion the cutting edge drive to the splitter was able to draw the specified strenght. Functional and strenght calculations of the individual parts. And finally drawings of the proposed mobile wood splitter.
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Structure Optimization of Electro-Hydrostatic Actuator for General Aviation Aircraft
Kraus, Jan ; Němec, Zdeněk (referee) ; Rousek, Miroslav (referee) ; Třetina, Karel (advisor)
The use of only one primary sort of energy is the present trend of aircraft design and its force systens. There are designed electromagnetical force systems for control of ther moving parts of aircraft structure. Great demands are laid on energy and dynamic characteristics at some force systems, especially at aircraft control system, and therefore there are developed electro-hydrostatic actuators, suitable for aircraft for aircraft control system, which could graduallly replace commonly used hydraulic servo-controol system. Not only electric signals but also required electric outputs are led into these electro-hydraulic actuators. Using a hydrostatic converter it is changed into mechanical output controlling the aircraft control system. The goal of work is to set requirements for characteristic and conception of electro – hydrostatic actuators for aircraft control systems. Further, on the basis of theoretical analysis , computer modeling and experiment, the design optimisation of electro-ghydrostatic actuator should be done for small business aircraft from the point of view of dimmensions and dynamic characteristics.
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Double drum synchronized control of hydraulic vibratory roller ARP95
Novák, Martin ; Rada, Zdeněk (referee) ; Klas, Roman (advisor)
This thesis presents solution of synchronized two smooth drum steering of tandem vibratory roller ARP 95. During the development of this machine was found insufficient synchronization of two drums. The above-described problem was solved by modifying the steering block. The correct evaluation of data measurement and understanding of the machine behaviour led to elimination of the problem. The main result of this thesis is elimination of unsynchronized behavior of two drums. Thanks to this was achieved maximum deviation between two drums 0,2°. Synchronized steering is very important for modifying the surface of the asphalt roads around the sidewalks and currently the machine ARP 95 produced by AMMANN is the top of the market when it comes to the synchronized steering.
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Mechanical construction of hydraulics arm
Vodrážka, Jakub ; Březina, Lukáš (referee) ; Věchet, Stanislav (advisor)
This bachelor’s thesis deals with design of a hydraulics arm. The main purpose of this hydraulics arm is the possibility to use it in education project which is a part of hydraulics systems lessons. This arm consists from few parts which are connected together by rotary joints. This arm is actuated by linear hydromotors, furthermore there is a magnetic position sensor. Autodesk Inventor 2008 was used during the arm design process. There are three main parts in this work. First part deals with fluids systems, the second part shows the position sensor properties and the last part presents some cases of arm design with deformation verify. A lot of supplement is presented at the end of this work as pictures of the model of the arm or pictures of some parts of the model.
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