Planetary friction gear system with elastically deformed planet gears and infinitely variable rpm control

摘要

The ring gear and sun gear each consist of a pair of conical discs (1, 2) and (3, 4) which are located one opposite the other and can be displaced axially with respect to one another. The bevels (F1, F2) of the ring gear discs converge radially outwards and those (F3, F4) of the sun gear converge radially inwards. Between the two pairs of discs, one or more elastically deformed planet gears (6) are arranged which are supported on the planet carrier. The latter can be in lateral frictional engagement directly with the conical discs or on the outside with annular springs arranged between the latter, and, in addition, laterally with their guide bars which are radially guided in grooves of the conical discs and move there on roller tracks or slide tracks. The change in the rpm takes place by axially displacing the discs in such a way that the distance between the sun gear discs changes inversely proportionally to that of the ring gear discs, as a result of which the planet gears migrate in the radial direction. The gear system can be changed directly to reverse operation when the planet carrier (5) is stationary and by means of a planetary gear stage which is connected downstream and whose sun gear (26) rotates with the input shaft (9). It is suitable for general machine engineering and as a gear system for vehicles. <IMAGE>