Abstract
When moving tractors with four-wheel drive (4x4) adhesion is achieved by utilization of the entire weight of the vehicle in relation to the movement of vehicles with two-wheel drive (4x2), when the exploitation only part of the weight of the vehicle, which is transmitted through the two operating point. Pulling characteristics in both variants depend on the achievement of optimum. In case that there is a incompatibility of kinematic movement of one wheel, relative to the second drive axle, and in certain types of transmissions, so-called. blocked by divorce, there is the possibility of useless forces or parasitic power, which not only does not participate in the implementation of the tractor, but is opposed to his where aborts conditions of movement of the wheels and the contact surface. In this paper, we give a short overview of the dynamics of movement of the tractor on the rise, with the drive (4x2) and review the possibility of parasitic forces in the drive (4x4) and the effect that created such a power could result in the tractor.
Highlights
Pri pravolinijskom kretanju, po ravnoj podlozi sa blokiranim pogonom mostova i postojanju razlike obimnih brzina prednjih i zadnjih točkova, izjednačavanje odnosa brzina oba pogonska mosta moguće je samo u uslovima proklizavanja ili klizanja točkova
Ako se na oba pogonska mosta, vučne tangencijalne sile raspoređuju u zavisnosti od odnosa proklizavanja točkova između mostova, time će i delovanje tangencijalnih sila vuče imati neposrednu zavisnost
Summary
Adresa autora: Predrag Petrović, Institut ”Kirilo Savić”, Beograd, Vojvode Stepe 51 Ugao (γp), se smatra pozitivnim u uslovima kada je linija vučnog otpora okrenuta nadole u odnosu na kontaktnu površinu i točkova traktora koji se u uslovima kretanja mogu usvojiti kao (Mf), pa se dobija formula koja određuje reakciju (Rp):
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