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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 use of mechanization from the environmental point of view.
PETRÁŠEK, Stanislav
In the category of small mechanization I chose the brush cutters. My study work is concerned with dividing of brush cutters into the groups according to several parameters and using them from environmental point of view. It also compares two types of brush cutters. The first one is HUSQVARNA 343 R and the second one is PARTNER 400 B. It is compared according to various parameters, which were measured and callculated from the measured figures.
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Assessment of small mechanization for transport and manipulation of material according to chosen exploitative indicators.
TOLKNER, Martin
This work deals with dividing of small mechanization for transport and material handling. The first part concerns with an area of utilization, transport and manipulation of the small mechanization. The second part is dedicated to analysis of exploitative, economical and environmental indicators. An experimental time measuring of individual working cycles of two universal skid front-end loaders UNC 060 and Locust 750 is affiliated. In the closing part of this work the measured times, weights and the loaders´ calculated outputs are being compared.
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Comparison of small mechanization for an adjustment of the shrubbery.
JANURA, Lukáš
The aim of this thesis is comparing several species of devices´ small-mechanization for an adjustment of the shrubbery. The work contains familiarization with the history of this issue and these machines and safety precautions for a manipulation. Service of brush cutters will also be broken down and comparing of three selected species according to their characteristics such as a fuel consumption, a performance, a weight and the function of antivibration elements are subjectively compared. The machines will be given their description. The conclusion of the work should serve as an aid for selecting brushcutter and ease the choice of selecting.
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Comparison for small mechanization used in composting
TŮMA, Jan
The aim is to create a comprehensive overview of mechanization used for composting and select appropriate criteria based on analysis for comparing different types of machines. By course of each operation of composting process were selected suitable means of mechanization for composting line. Thereinafter thesis defines the mechanization by load. In the thesis is realised research availability of small mechanization on the present market and based on analysis of the data was proposed criteria for comparing different types of machines. Final part of thesis includes simple example of project compilation of composting line for small compost-processing plant. The results of this thesis can assist during selection of small mechanization for small compost-processing plants, for example for municipal needs or primary sector (agriculture and forestry).
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