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Mechanical analysis of the subsystem of the tower crane
Urbánek, Roman ; Venský, Jiří (referee) ; Fuis, Vladimír (advisor)
The bachelor thesis deals with the solution of a subsystem of a tower crane with a passive effect (NNTP). First part describes tower cranes and their parts. The following part is a description of the theoretical and physical laws of statics and dynamics. In the practical part, various states of motion of a specific modeled subsystem are calculated, which shows a trolley of the tower crane. The aim of the calculation of each configuration is to determine the numerical values of the contact forces in the links, to analyze the dynamic quantities and to evaluate the functionality of the links. Numerical values of unknown parameters were calculated by solving a system of linear equations in the calculation software Matlab.
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Vibration diagnostics of bearings
Navrátil, Pavel ; Mazal, Pavel (referee) ; Klapka, Milan (advisor)
This bachelor’s thesis introduces the basic principles of vibrodiagnostic methods and their importance for individual fase of bearing’s damage. The selected methods studied are: acoustic emission, SPM (shock pulse method), SEE (spectral emission energy), envelope method, High frequency emission, Crest factor, Kurtosis factor and special method for slow-motion machines Adash Compressed Time.
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Analýza soustav 6-ti těles s vazbami s pasivním účinkem
Krček, Aleš ; Marcián, Petr (referee) ; Fuis, Vladimír (advisor)
This bachelor thesis deals with analysis of the systém of six solids with links with passive effect. The first part deals with theory which includes basic terms of statics, description and characteristics of the neutral and passive links. The second part comprises of two examples that the influence of passive effects on the motional state are demonstrated on. Aim of each example is the calcuation of contact forces in links and the evaluation of function of links and the motional state. The solution is carried out with the computing software MATLAB.
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Re-design of steering servo-actuators for Car4 experimental robot
Vespalec, Tomáš ; Hadaš, Zdeněk (referee) ; Vejlupek, Josef (advisor)
This thesis deals with the development and design of the wheels mechanism in an experimental vehicle Car4. During this work, we introduce the vehicle axle load calculation, with components and systems, allowing linear and rotational motion, and different design proposals for the application of these systems in the vehicle. The result of this work will be a new mechanism for the wheels of the experimental vehicle Car4.
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Mechanical analysis of the subsystem of the tower crane
Urbánek, Roman ; Venský, Jiří (referee) ; Fuis, Vladimír (advisor)
The bachelor thesis deals with the solution of a subsystem of a tower crane with a passive effect (NNTP). First part describes tower cranes and their parts. The following part is a description of the theoretical and physical laws of statics and dynamics. In the practical part, various states of motion of a specific modeled subsystem are calculated, which shows a trolley of the tower crane. The aim of the calculation of each configuration is to determine the numerical values of the contact forces in the links, to analyze the dynamic quantities and to evaluate the functionality of the links. Numerical values of unknown parameters were calculated by solving a system of linear equations in the calculation software Matlab.
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Analýza soustav 6-ti těles s vazbami s pasivním účinkem
Krček, Aleš ; Marcián, Petr (referee) ; Fuis, Vladimír (advisor)
This bachelor thesis deals with analysis of the systém of six solids with links with passive effect. The first part deals with theory which includes basic terms of statics, description and characteristics of the neutral and passive links. The second part comprises of two examples that the influence of passive effects on the motional state are demonstrated on. Aim of each example is the calcuation of contact forces in links and the evaluation of function of links and the motional state. The solution is carried out with the computing software MATLAB.
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Vliv způsobu ošetřování ozelenění ve vinici na kvalitu hroznů
Guldan, Aleš
The growing and the development of the grapevine and also the quality of the grapes are depended on the a lot of the factors. One of them is the management of the greenery. The modern viticulture trends see the vineyard as one integrated ecosystem, they bring the solutions for the supporting of the constantly maintainable development of the viticulture. For the greenery is important the suitable type of the greenery, the structure of the herbaceous mix and the management of the growing too. The correct greenery brings more positives than negatives. As a key positive factors we can see the crumbled soil structure, the increasing of the content of humus in the soil, improving the physical properties of the soil, restoring self-adjusting and biochemical processes in the soil, promoting biodiversity habitat, reducing the risk of erosion and ultimately allows movement of the agriculture machines under less favorable conditions. The experiments in the area of the village Diváky, done in 2013 and in 2015, showed the influence of the method of treatment greenery on the final quality of the grapes and musts. Method of treating the greenery is not the only factor that affects the growth and development of the grapes (weather, nutrition, variety, pressure of diseases and pests). In addition, suitable greening brings the above mentioned positives, which help fight pests, creates better conditions for growth and support the natural processes on the location.
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Re-design of steering servo-actuators for Car4 experimental robot
Vespalec, Tomáš ; Hadaš, Zdeněk (referee) ; Vejlupek, Josef (advisor)
This thesis deals with the development and design of the wheels mechanism in an experimental vehicle Car4. During this work, we introduce the vehicle axle load calculation, with components and systems, allowing linear and rotational motion, and different design proposals for the application of these systems in the vehicle. The result of this work will be a new mechanism for the wheels of the experimental vehicle Car4.
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Vibration diagnostics of bearings
Navrátil, Pavel ; Mazal, Pavel (referee) ; Klapka, Milan (advisor)
This bachelor’s thesis introduces the basic principles of vibrodiagnostic methods and their importance for individual fase of bearing’s damage. The selected methods studied are: acoustic emission, SPM (shock pulse method), SEE (spectral emission energy), envelope method, High frequency emission, Crest factor, Kurtosis factor and special method for slow-motion machines Adash Compressed Time.
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