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2-stroke Engine for Small Mechanization
Böhm, Milan ; Píštěk, Václav (referee) ; Rauscher, Jaroslav (advisor)
This diploma thesis includes progress constructional design of 2 - stroke engine for small mechanization, using modern tools of computer aided design. In the first part is mentioned short summary contemporary types small mechanization with 2 - stroke engines. Follows part devoted conceptual design with calculation of the main dimensions of engine cylinder. After assesment strength load of cranked mechanism, is effected stress analysis of connection rod, whose design and modeling is part of work, how by the help of analytical figures from appropriate literature so by final element method. Last part of those work is estimation results with presentation parameters, which affect power of 2 - stroke engines for small mechanization.
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Porovnání vybraných strojů při údržbě pastvin se systémem kombinovaných ohradníků
DUCHOŇ, Jan
In this bachelor thesis named "Efectiveness comparison of selected agriculture machineries and equipment during pasture maintenance with the systems of combined fences" the most commonly used green maintenance methods are described under the various systems of fencing for livestock. The purpose of this work is to provide basic information about the possibilities of maintenance and preservation of pasture fencing function not only for small and emerging farms and other agricultural companies, but also for farms with a large area, in an effort to compare possibilities and ways to increase efficiency, reduce time and financial demands. A more detailed description is concentrated to the machines that agricultural farms and companies use in common practice most often for the above work. The agricultural machinery and equipment described in this bachelor thesis were selected by the used agricultural public questionnaire which I personally created. I asked about 100 farms and companies about the response and feedback. Based on their responses to the questionnaire's follow-up, it was clear which machines and practices in the maintenance of pasture fencing are most often used regardless of whether they are used in the most efficient way and which farm or company they use. At the end of the thesis are processed results of my comparison of the effectiveness of individual agricultural machinery and equipment. The processed results also indicate which machines are best suited for the maintenance of pasture fencing for livestock. They show their efficiency, time and cost.
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2-stroke Engine for Small Mechanization
Böhm, Milan ; Píštěk, Václav (referee) ; Rauscher, Jaroslav (advisor)
This diploma thesis includes progress constructional design of 2 - stroke engine for small mechanization, using modern tools of computer aided design. In the first part is mentioned short summary contemporary types small mechanization with 2 - stroke engines. Follows part devoted conceptual design with calculation of the main dimensions of engine cylinder. After assesment strength load of cranked mechanism, is effected stress analysis of connection rod, whose design and modeling is part of work, how by the help of analytical figures from appropriate literature so by final element method. Last part of those work is estimation results with presentation parameters, which affect power of 2 - stroke engines for small mechanization.
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The influence of small greenkeeping mechanization on stand composition and biomass production
ZEMAN, Jaroslav
The main theme of this piece of work is to assess the influence of small mechanisation for maintenance of grass areas; therefore this work includes the description of grass areas as well as the overview of small mechanisation for maintenance of grass areas. Two types of mowers working on different principles of cutting were chosen to make a comparison. This work presents the results of measurement taken on 2 experimental grass areas treated by chosen types of mowers. There are results of monitoring of agrobotanical groups reported (coverage of grasses, the juncaceae, the cyperaceae, the clovers, and herbs) and coverage of grasses is graphically depicted in this work. Different results of grass coverage were statistically evaluated and compared just as the dry matter yields. Appropriate treatment of grass areas (mowing, supplementary seeding) as well as appropriate cutting system of small grass areas was recommended.
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Assessment of small machinery for processing and soil cultivation acording to selected indicators of exploitation
PAVELA, Josef
The first part of thesis is written as a literary review, which deals with the basic information of soil composition, the importance of soil in agriculture and the methods of soil tillage. It follows dividing of small tractors, machinery and tools for primary soil tillage, the soil preparation before sowing and planting and the soil cultivation. A literary review is concluded by an analysis of exploitation, economic and environmental indicators. The second part of thesis is formulated as the methodical way The methodology deals with measurement of operational tests, which means the time-frames measuring of selected rotary tillers. The thesis presents the results of measuremens of selected rotary tillers MOUNTFIELD MS 16 IN and VARI IV GLOBAL and compares the them. The conclusion of the thesis deals with an evaluation of the results, achieved by measurement.
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Assessment of small machinery for cleaning and tidying according to selected exploitation indicators.
STACH, Vlastimil
In this thesis is created overview of machinery used for cleaning. The thesis analyzes the exploitation indicators for individual machines. The thesis deals in detail the structure and function of pressure washers, which provides for appropriate indicators for their assessment. The thesis presents measurement results of three selected specific indicators of pressure washers from hobby, middle and professional lines and compares them with each other. At the end of thesis are assessed properties, characteristics and suitability of use of selected pressure washers.
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