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Možnosti zvyšování přenosu hnací síly kol traktoru na podložku
 Henzl, Jan
The thesis is focused on the possibilities of increasing the transmission of the driving force of the tractor wheels to the ground. The theoretical part deals with the force and power balance of tractors. It also lists various ways in which it is possible to increase the transmission of driving force by means of additional weights or by increasing the contact surface of the tire. In the last chapter of the theoretical part, the thesis deals with the hypothesis which says that the transmission of driving force to the ground can be made more efficient by placing the front weight at a greater distance from the front axle. In this section, the load on the front and rear axles is calculated for different variants of the placement of the front weights. Furthermore,a graphic representation of the change in mass distribution depending on the traction force is created. The practical part aims to analyse the output parameters of a tractor without front weights and a tractor equipped with front weights. Therefore, the measured values of the slip and the actual speed for different gears are compared. Subsequently, the values of tractive effort and specific tractive effort have been calculated. The results of the field measurements came out clearly better for the front weight equipped tractor, as the difference between the pulling powers was up to 12 kW. The specific pulling power was also significantly better for the tractor with front weights, as up to 93 g.kW-1h-1 lower specific pulling power was achieved than for the tractor without weights.
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See also: similar author names
1 Henzl, Jakub
1 Henzl, Jindřich
3 Henzl, Jiří
1 Henzl, Josef
2 Henzl, Jozef
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