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Vliv použitého nářadí na kvalitu zpracování půdy
PIŠL, Stanislav
For the evaluation of this diploma thesis I have chosen four different processing machines with various working organs. There were reversible plow Lemken Opal 90, plate cultivator Horsch Joker 8 RT, blade cultivator Farmet Duolent DX 300 N and combined cultivator Väderstad TopDown TD 500. Raitings were carried out on lands with very similar features to get the most advantageous possible comparison. The thesis contains characteristics of the companies and technical data of compared machines, where the machines differences are obvious, because each machine is designed and assembled for different purpose of soil processing. The fact is that each machine excelled in different type of measuring from the qualitative indicators' point of view. The best cultivation of plant residues came from the plow Lemken Opal 90. On the other hand, Väderstad TopDown TD 500 had the most decaying effect on post-harvest residues.
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Comparison tridem transport system ZDT MEGA 33 with ANNABURGER 33.79 in the agricultural production
PIŠL, Stanislav
This bachelor's thesis is focused on the comparison of products that we chose from two of the most represented producers of agricultural vehicles which are on the top of the sales chart on the Czech market. Our measurement and comparison were done with tridemic semitrailer and replaceable systems called Annaburger 33.79 and ZDT MEGA 33 which work with a body and a spreader of homestead fertilizers in enterprises of the agricultural primary production. To make our comparison as seminal as possible, the data are taken from the types of companies which are very similar in their characteristics. The work contains characteristics of these companies and technical data of compared replaceable systems, from which it is apparent that a superstructure of Annaburger enterprise achieves larger volumes and so higher productivity. From the economic standpoint, there was discovered that the transport of one km-ton came out better for replaceable system Annaburger. In a case of this replaceable system, there was achieved a value 13, 14 Czech crowns per 1 tkm. For the replaceable ZDT system there was set an expanse of 61 Czech crowns per 1 tkm. That was caused by oversize of the machine fleet of the Zevos Ltd. enterprise in Libceves, which, however, can also have some advantages. For the bodies and spreaders of homestead fertilizers there was investigated the transverse evenness of a distribution of cattle manure. Again, there was a victory of the body of Annaburger enterprise which provided evener distribution of the manure from the whole breadth of a range. Contact pressures to washers were also compared for the needs of contemporary farmers. From the measurement it was found that the semitrailer of Annaburger 33.79 equipped with low-pressure flotation tires Michelin 600/55 R26,5´ CargoXbib achieves up to 28.5% more contact area than car ZDT MEGA 33, which is provided with radial tires Mitas AR-02 560/60 R22,5´. In this found differences between both of the interfaces, ZDT semitrailer operates up to 6,5 psi higher pressure to a washer.
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