When the input sun gear shaft is driven keeping the annular gear band brake fixed, the planet gears simultaneously rotate around their axes and revolve around the input sun gear axis along the inner circumference of the annular gear. The situation is considered when only the annular gear is stationary. For transmission of torque, either the sun gear, the carrier, or the annular gear must be held stationary. The sun gear and the annular gear are connected by a number of planet (pinion) gears P which are mounted on a carrier C and is integral with the output shaft. In the centre of this gear is sun gear S, which forms partįig. (c) considerable variation in gear ratios both forward and reverse can be obtained through epicyclic gear trains.Īn epicyclic single-stage gear train consists of an internally toothed annular (ring) A (Fig. (fc) engagement of these gears may be obtained smoothly and quietly by the application of brake bands, and Epicyclic gears are very widely used in automatic transmission because, The layout of a simple single-stage epicyclic gear train is shown in Fig. The most commonly used gear trains in automatic transmission system are three-speed Simpson gear train and two-speed Ravingeau gear train. Epicyclic gear trains are generally used for automatic transmission, overdrives, and final drives.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |