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Score of combine harvester with a different threshing device at harvest of cereals and oilseed rape in the business of agricultural production
HRACH, Milan
The purpose of this work was to compare aktivity and grade work combine harvester with different threshing system at harvesting a grain and oilseed rape in the business of agricultural production. Work was focuse on the size harvesting losses, grade grind and spreading crop residues, influence on the moisture of harvested crops on the size losses grade grind and spreading crop residues, throughput combine harvester, analysis of performance and consumption fuel. Work is complete about principal parametr agricultural operations, principal parametr owner machines and simply analysis of operating and investment costs. Although combine harvester didn't work at same land, measurement was done in the most consistent as possible in harvested condition regarding the weather, terrain, etc. From results are clearly that almost all the results achieved best results with a conventional combine harvester threshing mechanism Claas Lexion 580. Exception was only throughput at harvest of winter oilseed rape, which had machine John Deere S 690 with axial threshing of 1.23 kg ha-1 higher than Claas Lexion 580. Consumption fuel was lower at harvest of winter wheat with procrastination straw on the line by machine Claas Lwxion 670 with value 11,0 l.ha-1. . When shredding straw was reached average values for all combine. The worst grind and spread straw demonstrated combine harvester John Deere S 690 where avoid spreading crop residues over the entire stroke. All machines accomplish agro-technical requirements for the combine in terms of losses off 1,5 % in direct harvest, performance, throughput, quality scatter chop, shred the quality of crop residues and working speed. Results this work convince me to recommend harvester Claas Lexoon 580 especially for large agricultural business and for service businesses with minimum efficiency 1 340 ha.rok-1 . For smaller business or business with higer structure of livestock production I would have chosed thresher with straw walker technology separation device and to Claas Lexion 670. Combine harvester John Deere S 690 U would advised more for service businesses and large business engaged in growing corn for grain with minimum area coverage. For both machines I would choose the cutter adapter on the frame 9 meters.
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Comparison of combine harvesters with different implementations of threshing for the harvesting of cerealvand oilseed rape.
TOČÍK, Vojtěch
The Bachelor thesis on the Comparison of combine harvesters with different implementations of threshing for the harvesting of cerealvand oilseed rape gives an overview of the construction and development of the main parts of the harvester. In the theoretical part it is mainly focused on the threshing unit as well as on the development of other units providing higher efficiency and performance. Practical part presents the methodology and results of the field-laboratory measurements with the aim to compare the activities of combine harvesters New Holland CX 8090 and New Holland CR 9080 in terms of loss, quality crushing and spreading of crop residues, fuel consumption and performance.
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The noise of a harvest line during cereals harvest
BÁRTŮ, Lukáš
The thesis focuses on harvest of cereals in terms of noise pollution. Sources of noise during harvesting are harvest line (combine harvester), manipulation equipment transporting harvested grain (tractors with trailers) and in some cases harvesters straw (tractors with collectors). The main aim of this work is to measure noise at harvest on the outskirt of the crop land. In this work I focused on the selection of suitable observation post, measurement of noise pollution of particular agricultural machines, background noise measurement and evaluation of climatic conditions. Furthermore, acquired data are used for equivalent noise level calculations and evaluation against current legislation. Based on the data analysis can be concluded that noise pollution during harvest does not negatively impact its surroundings, therefore there is no need for any action to reduce noise exposure.
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Rating combine harvesters John Deere 9880 and New Holland CR 9080 at harvest of cereals and oilseed rape.
WEBER, Michal
The aim of this thesis was to compare the activity and quality of work of the combine harvester New Holland CR 9080 and John Deere 9880 STS at harvest of cereals and oilseed rape and their simple economic evaluation. The thesis was focused on comparing losses and influence of moisture of harvested crops on the size of the losses, on the quality of crushing and the spreading of plant residues. Then the inf luence of moisture of harvested crops on the quality of crushing and the spreading of plant residues, analysis of performance and consumption of diesel were compared.
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Table of types of the basic technical data and field threshing-machine producers.
VOKOUN, Josef
In Czech agriculture, threshing-machines of many producers are being used, these often differ in construction of basic functional units or optional features. The principal aim of this job is to gather the production schedule of each producer and make it well-arranged so as the agriculturist could responsibely consider which type and size and which equipment would be optimal for him. The threshing-machine purchase is a large investment for the farming business and the wrong choice would have fairly big consequences on the business economics.
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