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Specifics of accidents Agricultural Technology
Tamáši, Adam ; Polcar, Adam (referee) ; Vémola, Aleš (advisor)
Master’s thesis focuses on the specifics of agricultural machinery accidents. The introductory part defines agricultural machines and its basic characteristics. It also analyzes specific technical regulations that govern the use of these machines in traffic. The experimental part then describes the methodology and interprets the results of conducted experimental measurements on driving dynamics of a tractor with carried accessory. These measurements consist of a break test in straight line, evasion manoeuvre and acceleration while turning left. The focus was given to not just the acceleration values, but also to the influence of the carried accessory, the load on the front axle or the tire pressure. The analysis of the findings made compares the results with the driving dynamics of ordinary passenger cars and provides a detail dissection of the most frequent causes of agricultural machinery accidents.
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High pressure hydraulics in agricultural machinery
Pavlík, Václav ; Kárník, Jan (referee) ; Soukup, Lubomír (advisor)
This bachelor thesis provides an overview of the most used ways of converting kinetic energy into pressure energy and the other way around by using hydrostatic converters. It is focused on the issue of high-pressure hydraulic mechanisms in agricultural machinery. In the next section I focused on getting an overview of the function of sophisticated hydraulic systems in current tractors and calculation of heat losses of lifting weight by front three-point hitch. For solving was used Bernoulli equation for real flow in pipes.
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Single-axle semitrailer 5t for a tractor
Christov, Rosen ; Fajkus, Pavel (referee) ; Kašpárek, Jaroslav (advisor)
This master’s thesis contains research of semi-trailers within similar weight category and research of road traffic laws for appropriate trailer category. Next part consists of semi-trailer construction design and its components. Followed by stress analysis of supporting frames by finite element method. Last part of the thesis is drawing documentation to the extend specified in assignment.
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Konstrukční trendy u vinohradnických traktorů
Zálešák, Jan
The bachelor thesis deals with the construction and construction trends of vineyard tractors. The aim of the thesis is to give an overview of the used vineyard tractors and their parameters. From the literature review, information on vineyard tractors, their history, characteristics, activities for which the vineyard tractor is used, comparison with conventional tractors, tractor engines, transmissions, hydraulic elements, suspension devices, cabs and other design trends and elements used in vineyard tractors are selected. The thesis is also interested in higher automation that will facilitate and improve the efficiency of work in viticulture. The conclusion of the thesis provides a comparison of selected output parameters and advantages and disadvantages of vineyard tractors of selected manufacturers.
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Datové sběrnice zemědělských strojů
Janeček, Tomáš
The diploma thesis “Agricultural machinery data buses” discusses different types of networks in vehicles, namely in agricultural machinery. In the first part, it is stated what information itself represents and in which ways information, or data, can be transferred. The principle of computer communication is illustrated using the ISO/OSI reference model. It also shows what data buses are used in vehicles, in particular the CAN bus, which provides the communication for the control units of most current vehicles. SAE J1939, the universal communication protocol used in trucks and agricultural equipment, is also described. It is also shown how the tractor is enabled to communicate with the implement via the ISOBUS. The data source was the tractor CASE IH PUMA 195. The obtained data were processed and then displayed in graphs. Each graph has a commentary discussing its potential use in practice. The last part discusses the possibilities of monitoring vehicle operational data and its use to increase the efficiency of operations.
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Economic Development of Enterprise in Relation to the Implementation of Innovation
MATYÁŠ, Michal
The aim of this work is to asses the economic evolution of the enterprise considering the phases of its business life cycle and the innovative activities. The data included in this work represent AGRIO MZS s.r.o., which is mid-large manufacturing company operating on the field of agricultural machinery. This paper adopts quantitive methods such as comparison of return on assets, return on sales, return on equity and other profitability or activity ratios since the founding of the company in 1993. Presented calculations are based on economical reports available in the public register as well as on the management accounting provided by the company itself.
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Single-axle semitrailer 5t for a tractor
Christov, Rosen ; Fajkus, Pavel (referee) ; Kašpárek, Jaroslav (advisor)
This master’s thesis contains research of semi-trailers within similar weight category and research of road traffic laws for appropriate trailer category. Next part consists of semi-trailer construction design and its components. Followed by stress analysis of supporting frames by finite element method. Last part of the thesis is drawing documentation to the extend specified in assignment.
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