| 摘要 |
<p>A transmission comprising epicyclic gears having planets and cog wheels or crown gears and braking means. Each of the planets is multiple; that is, it is constituted by an n number of cogwheels which have different pitch diameter values and are coaxial and turn-linked, the physical shaft of the planetary member mount (a member incorporating the multi-planet shafts p) being called principal shaft 2. Each of the cogwheels n (sunwheels) meshes with a like wheel p of the multiple planets, there is one, the principal wheel turn-linked and coaxial with a physical shaft, which is designated principal shaft 1. The remaining n-1 wheels being positioned coaxially with this shaft and with freedom of turn among themselves and with the principal shaft 1, known as auxiliary wheels. The braking means can be of known type such as multi-disc, ring-piston and hydraulic-drive and there are as many braking means as auxiliary wheels, that is n-1, and each when applied prevents a certain auxiliary wheel from turning, for which appropriate mechanical connections are provided which coaxially turn-link each auxiliary wheel with each turning disc or discs of each braking means, with which and owing to the independent action of each braking means as many transmission ratios are obtained (quotients between turning speeds) between the principal shafts 1 and 2 as there are braking means, or n-1.</p> |
