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Study of agricultural tractors with weight over 9 tons
Slimařík, Dušan ; Kašpárek, Jaroslav (referee) ; Pokorný, Jan (advisor)
This bachelor’s thesis treat about study of agricultural tracotors with weight over 9 tons. First part relates with products offered for Czech market. Next part compares products by main and variable technical parameters. Last part of this thesis shows preferences of each manufacture and give short description of chosen products and their details, consequently the best product is determined.
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Pracovní podmínky obsluhy v kabinách traktorů s odlišnou výkonností při orbě.
REITMAJER, Jan
In this work is described problematic of tractor cab development and their construction. Then was described noise and performance distribution of tractors. In the practical part was monitored noise exposure in the driving area of the tractor during the plowing. For measurements were selected tractor types: New Holland T8040, Fendt 716 Vario, Case Puma 240, New Holland T7050, John Deere 8530 and Kirovec K-701. Chosen tractor types were different in performance, age and vendor. Measurement was performed in the length of one working shift, i.e. eight hours of recording data in the memory of recording device.
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Study of agricultural tractors with weight over 9 tons
Slimařík, Dušan ; Kašpárek, Jaroslav (referee) ; Pokorný, Jan (advisor)
This bachelor’s thesis treat about study of agricultural tracotors with weight over 9 tons. First part relates with products offered for Czech market. Next part compares products by main and variable technical parameters. Last part of this thesis shows preferences of each manufacture and give short description of chosen products and their details, consequently the best product is determined.
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The sound pressure levels at tractors of the same power
ANDĚL, Tomáš
This thesis deals with the measuring of the sound pressure levels at tractors of the same performance class. Tractors of the following types: John Deere 6230, Case IH JX 95, Steyr 9094, belonging to medium-power tractors, were selected for this specific measuring. The measuring was performed in three operating states of the tractors: at the idle speed, at the maximum no-load speed and at the load of the tractor. A special methodology was developed for these measurements. The measuring results imply that the highest influence on the noise levels of the tractors is that of the motor speed. The sound pressure levels measured at the load of the tractor were by 6.8 to 8.5 dB lower than those measured at the maximum speed. This difference results especially from the operation of the loaded tractor at a lower speed than the maximum.
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