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Concept of the autonomous tracked vehicle for the agriculture
Masnica, Daniel ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
This bachelor´s thesis deals with the design of the concept of an autonomous tracked vehicle for agriculture. In the introduction is brief research of similar autonomous vehicles. The next part of the thesis is the conceptual design, dimensional and performance calculations. Based on the calculation, the individual components of the vehicle and the retrospective strength calculation of the individual parts. The result of this work is a concept that corresponds to all specified parameters.
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Cleaning equipment for the road signs
Kuře, Radim ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
The main aim of this bachelor thesis is to design the construction of cleaning equipment for the road signs. Introductory part of thesis contains tractors which are used in road maintenance and similar equipment in this area. The main part is dedicated to design of cleaning equipment for the road signs.
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Lifting equipment for a tractor
Smrček, Jakub ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
Main aim of bachelor’s thesis is mechanical design of tractor attached telescopic loader crane used for moving materials. Introductory part of the thesis contains description of lifting equipment for tractors that are actualy produced. Main part of thesis is focused on design of loading crane itself. Whole design is based on strength and control calculations of choosed areas of the loader. At the end are drawings of whole assembly and components of developed telescopic tractor loader.
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Lifting equipment for a tractor
Zálešák, Jiří ; Pokorný, Prokop (referee) ; Kašpárek, Jaroslav (advisor)
This thesis deals with the design of the device carried by a tractor which will be used for material handling. Aggregation is solved using the three - point hitch of the tractor. The load carrying capacity is 1000 kg. The thesis contains a 3D design, a constructional solution, which is based on strength and control calculations, and technical drawings.
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Analýza silových účinků pluhů na výstupní parametry orebních souprav
Slimařík, Dušan
The aim of this thesis is force effect analysis of ploughing rigs. MSC Adams software was used for mathematical-physical model drafting and subsequent evaluation of measured data from tensometrical load sensing. Designed model was utilized for force reactions calculations under the driving wheels of a tractor using analysis of spatial system of forces of tractors three point hitch. Field measurement data and data from MSC Adams software were tabular and graphically processed. Dependencies between plough and tractor connection setting and output performance of ploughing rigs were clarified. Results from experimental measurement with fully-mounted plough point out on the utilization of longitudinal and lateral position of ploughs CG for reducing of difference in load between furrow and land wheel with properly adjusted connection between plough and tractor. A result from experimental measurement with semi-mounted plough confirms the fact of significant difference in vertical load between rear axle wheels. This negative phenomenon could be eliminated with usage of traction cylinder localized in construction of semi-mounted ploughs over the horizontal joint. Correct adjustment of tractors three point hitch in case of fully-mounted ploughs and utilization of traction cylinder in case of semi-mounted ploughs have got positive influence on fuel consumption and field performance of ploughing rigs.
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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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Regulatory hydraulics of tractors and its practical use
DOLEŽAL, Jan
The work deals with the regulation hydraulics for tractors and its practical use. The theoretical part includes the construction of three-point hinges, variants of regulatory systems and the impact of regulatory systems on the use and transfer of power. The practical part deals with the use of hydraulic control in practical operation.
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Vliv připojení nesených strojů v tříbodovém závěsu na výstupní parametry traktorových souprav
Kopecký, Petr
In the literary part of the diploma thesis, a brief overview of the current state in the tractor design has been done, concentrating onto such elements that lead to lowering of fuel consumption. The practical part is based on the realized solution. The target of the measurement was to prove the influence of adjusting of the three-point hitch onto the output parameters of ploughing sets, consisting of the Zetor Forterra 140 HSX tractor and Kverneland 150 B mounted plough or Kverneland PN 100 semi-mounted plough. The essence of the measurement was gradual shortening of the upper linkage of the three-point hitch, whereas simultaneously with shortening of the linkage, the force on the linkage was rising. The force was measured by means of strain gauge Hotinger U2A. In case of the mounted plough it has been proved that shortening of the upper linkage causes rising of the force. That shifts part of the plough weight onto the rear wheels of the tractor, resulting in lower wheel slipping and lower fuel consumption.
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