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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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Control of hydraulic directional valves of mini excavator
Nožka, Michal ; Robenek, Dětřich (referee) ; Nevrlý, Josef (advisor)
This diploma thesis deals with the design of control algorithm for hydraulic directional control valves of a zero-emission mini excavator. Zero emission excavator have same parameters as diesel engine powered version of it. To solve this problem simulations were done for hydraulics and control algorithm of this machine. To find right parameters of simulation models, experiments have been done. There were also proposed some methods to obtain the right set of parameters. The result of this diploma thesis is control algorithm for directional control valves of this very unique mini excavator that doesn't have any competitor (in terms of control algorithm). Set of parameters was also tested during experiments.
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Effective measures in the production of the component in condition a firm
Hradil, Roman ; Fiala, Zdeněk (referee) ; Kalivoda, Milan (advisor)
The subject of this Bachelor thesis is a proposal of conditions, which increase efficiency of manufacturing of the hydraulic distributor. Project was carried out in cooperation with private company S&K TOOLS spol. s r. o., which is based in Brno and focused on manufacturing of engineering parts. First part of thesis is dedicated to the company philosophy, analysis of the part and existing technology of production. Second part of thesis includes concrete proposals of upgrade, including technical and economical evaluation of these modifications.
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Control of hydraulic directional valves of mini excavator
Nožka, Michal ; Robenek, Dětřich (referee) ; Nevrlý, Josef (advisor)
This diploma thesis deals with the design of control algorithm for hydraulic directional control valves of a zero-emission mini excavator. Zero emission excavator have same parameters as diesel engine powered version of it. To solve this problem simulations were done for hydraulics and control algorithm of this machine. To find right parameters of simulation models, experiments have been done. There were also proposed some methods to obtain the right set of parameters. The result of this diploma thesis is control algorithm for directional control valves of this very unique mini excavator that doesn't have any competitor (in terms of control algorithm). Set of parameters was also tested during experiments.
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Effective measures in the production of the component in condition a firm
Hradil, Roman ; Fiala, Zdeněk (referee) ; Kalivoda, Milan (advisor)
The subject of this Bachelor thesis is a proposal of conditions, which increase efficiency of manufacturing of the hydraulic distributor. Project was carried out in cooperation with private company S&K TOOLS spol. s r. o., which is based in Brno and focused on manufacturing of engineering parts. First part of thesis is dedicated to the company philosophy, analysis of the part and existing technology of production. Second part of thesis includes concrete proposals of upgrade, including technical and economical evaluation of these modifications.
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