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Wood-splitting machine
Svoboda, Vít ; Škopán, Miroslav (referee) ; Malášek, Jiří (advisor)
The objectives of the bachelor’s thesis is to make a short research about the cutting machines in general, compare the design, individual drives and the parameters of these machines. The next part is the emphasis on the actual construction of the machine, which is another goal of the work. At first, the frame is designed, then the hydraulic circuit of machine is designed by calculating and the last part deals with control and supporting calculations splitter component elements. The basic drawings of selected components of the splitting machine are parts of the work.
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Machine diagnostics based on models
Kapusta, Juraj ; Habán, Vladimír (referee) ; Huzlík, Rostislav (advisor)
The main idea is focused on the diagnostics of a specific hydraulic system, i.e. sensing the physical quantities of the hydraulic circuit with a tank and a centrifugal pump driven by an asynchronous motor. It is a system of pipes connected to the pump, where due to its work it creates a water flow and a pressure increase. In practice, this issue is also addressed in the energy and nuclear industries. Primary circuits in some cases cannot be designed or modified to be able measure locally the pressure value. It is necessary to measure this quantity indirectly - from the motor currents. The main idea of the work is to diagnose the system by an indirect method - specifically to detect the state of the hydraulic circuit (pressure, flow) from the values that we are able to measure and detect damage in advance. In the second part of the thesis is the application of the parts of a specific hydraulic system in the simulation environment MATLAB Simulink. The model of the hydraulic circuit contains mathematical-physical relations that simulate the course of the mentioned experiment. The results of the simulation are compared with the results of the experiment. The model also investigates the simulation of a fault condition, when we supply pressure pulsations to the hydraulic circuit. It is these changes in the hydraulic part that affect the characteristics of the pump and the asynchronous motor, so we are able to diagnose this system.
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Solution alternatives of lifting platform
Hájek, Ondřej ; Malach, František (referee) ; Malášek, Jiří (advisor)
The aim of this thesis is to analyze the possibility of mechanical design platform lifts. Proposal lifting platform with mechanical and hydraulic drive with a capacity of 3500 kg and lift 600 mm. The work is mainly focused on design and strength calculation mechanism and structure. Proposal hydraulic circuits and the development drawings for both types of drive.
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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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Design of small hydraulic press with "C" frame
Gregor, Radek ; Tůma, Jiří (referee) ; Pavlík, Jan (advisor)
The main goal of this bachelor thesis is construction of small hydraulic press with force of 200 kN. With that comes topics like calculations of hydraulic circuit and it‘s compilation and calculation of the frame with it‘s construction. With the help of those two main topics we will be able to assemble whole hydraulic press machine. After completion of calculations and simulations, arises technical documentation of the machine.
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Wood-splitting machine
Důrek, Milan ; Malach, František (referee) ; Malášek, Jiří (advisor)
The master thesis done within the master study programme Transport vehicles and handing machinery presents a design of a wood splitting machine. The first part of the thesis is a literary review focused on current state in the field of wood splitting machines and on the overview of the most common wood species including their technical parameters. In the second part of the thesis, suitable machine components were chosen for the conceptual design of the wood splitter, taking into account predefined parameters. Then a machine frame was designed and its strength was verified by analytical and FEM method. Finally, drawing documentation for the machine, machine frame and splitting tool was created.
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Design of manipulation table for workpiece rotating
Horák, Jiří ; Opl, Miroslav (referee) ; Pavlík, Jan (advisor)
This master’s thesis deals with the design of the manipulator for rotating objects, especially workpieces, semifinished products, or complete products around horizontal axis. It’s the manipulator for objects where is needed change orientation during production process. This thesis describes step by step construction of individual components of the manipulator and calculations of propulsive units. At the beginning the conveyor roller with propulsive unit is designed. The next step is construction of scissor lift table and choice of the propulsive unit. There is also made FEM analysis for the scissor mechanism. The next unit is aimed to the construction and computation of rotating and telescopic jaw. Then hydraulic circuit with computation of the propulsive unit is designed. As the final step the appropriate type of sensors are chosen and the step diagram of the manipulator is made. The manipulator is designed in the 3D model program and there are also made some assembly drawings.
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Mounting wood splitting machine
Zápotočný, Václav ; Škopán, Miroslav (referee) ; Malášek, Jiří (advisor)
Bachelor's thesis, made at the Institute of Automotive Engineering, is focused on efficiency and faster way of wood waste processing, which is caused by logging or adverse nature conditions. Next step is making the hard physical work connected with logging easier especially in hardly reachable places. The splitter design is based on easy operation, handling and its independency on non-transferable propulsion source. It has got a tendency to be a cheaper option compared to professional splitters especially for small forest companies and minor forest owners.
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Hydraulic pullers
Kvasnica, Tomáš ; Malach, František (referee) ; Malášek, Jiří (advisor)
This Diploma thesis occupies with design of hydraulic puller. In work are mentioned possible types of construction. Choice construction of puller is disposed with parameters: maximum pushing force 50 kN, speed of piston rod 0,05 m/s. This work also contains FEM analysis by computer programme I-DEAS. The work also occupies with design of fluid drive.
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