engleski

Selection of the Appropriate Reversible Two-Carrier Planetary Gear Train

This paper considers two-speed planetary gear trains with four external shafts composed of two simple planetary gear trains. Possible schemes of these planetary gear trains are given, including a systematization of variants. By putting brakes on different shafts the power flow changes, which changes the transmission ratio as well. This fact makes it possible to apply these transmissions in systems which require transmission ratio changes under load. This paper presents a review of schemes of these transmissions and their layout variants. In addition to the definition of transmission variants, some relations are deduced for the determination of speed ratios and efficiency for any chosen variant as the consequence of the power flow change. The choice of the transmission for application in concrete circumstances is presented in the continuation of the paper.

Planetary Gear Train, Power Flow, Transmission Ratio

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