Прегледај по Аутор "Marković, Kristina"

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    Analysis of the Shifting Capabilities of Planetary Gear Trains with Coplanar Planet Gearsets
    (Technical University of Sofia, 2023) Vrcan, Željko; Troha, Sanjin; Marković, Kristina; Tica, Milan; Milutinović, Miroslav; Mitrev, Rosen
    This paper deals with the comparison of two different simple planetary gearsets. The first type is a 2k-h, variant A geartrain, while the other is a simple planetary gearset with coplanar paired planets. Methods for the kinematic synthesis of both gear trains are explored, together with the analysis of the transmission ratios that can be achieved by the gearsets. Both gear trains are analysed for the possibility of operating as a reversing gear train within their design limitations. The type with paired planets is of particular interest, as it can be built in a configuration that will have a transmission ratio of -1. This also enables compound gear trains having equal transmission ratios in both directions of rotation of the output shaft to be built.
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    Application of Two-Carrier Planetary Gear Trains to Shifting Gearboxes
    (Technical University of Sofia, 2023) Troha, Sanjin; Vrcan, Željko; Marković, Kristina; Tica, Milan; Milutinović, Miroslav; Mitrev, Rosen
    This article deals with two-carrier planetary gearsets having two connecting and two external shafts, which may operate as two-speed gearboxes when brakes are placed on two external shafts. Analysis of the S16WN(S/E) gearbox is performed using the torque method, the specific torques are determined on all shafts, and then used to calculate both transmission ratios. The kinematic scheme of the gearbox has been synthesized, and the relative power flows have been identified. Efficiency functions are calculated for both gear ratios. The graphical representation of the transmission ratio functions for both gear ratios was used to obtain the diagram of the shifting capabilities of the S16WN(S/E) gearbox. The importance and utility of such diagrams and the relevant equations for the determination of ideal torque ratios of the component gear trains is explained. The size of the transmission ratio domain suggests that the S16WN(S/E) gearbox has a wide area of possible applications.