SU1208379A1 - Planetary friction variable-speed drive - Google Patents

Description

one

The invention relates to a master structure and can be used as a friction planetary variator in drives of various mechanisms.

The purpose of the invention is to increase the load capacity of the variator by changing the pressing force in the friction contacts in proportion to the transmitted torque.

The drawing schematically shows a friction planetary variator, a longitudinal section.

The friction planetary variator comprises a housing 1, an input 2 and an output 3, shafts mounted on the input shaft with axial movement of the carrier 4 with satellites 5, interacting with the last inner surface of a fixed conical shell 6 connected to the housing 1, and fixed on the output shaft 3 and the conical shell 7 interacting with the outer surface with the satellites 5 with the taper of the opposite taper of the fixed conical shell 6.

The conical shell 7 can be fixed on the output shaft 3 by means of a disk 8 with a hub. Satellite 5 can be performed in the form of toroidal rollers, located

Editor T. Peteyko Order 231/49

Compiled by 0. Kosarev

Tehred O. Niece Proofreader M. Maximshinets

Circulation 880 Subscription Vshipi State Committee of the USSR

for inventions and discoveries 13035, Moscow, Zh-35, Rautskisk nab., d, 4/5

(T oral PPP Patent, Uzhgorod, Proektna st., 4

staggered in chess order, for example spherical. In order to improve the adhesion of the conical shells 6 and 7 with the satellites, their respective surfaces may be covered with an elastic material, for example rubber.

The variator works as follows.

When the input shaft 2 rotates together with the planet carrier 4, the satellites 5, rolling the stationary conical shell 6, cause the conical shell 7 to rotate and connect: the output shaft 3 with it: Nat 5 at the friction contacts of the satellite 5 with conical shells 6 and 7 creates due to elastic deformations of the shells.

The rotational speed of the input shaft 3 is controlled by axially moving the carrier 4 with the satellites 5 due to the change in the radii of the points of contact of the satellites with the conical shells.

Appropriate selection of the tapering points of the conical shells allows to obtain a change in the force of pressing the retellites in proportion to the change in the transmitted torque, which ensures an increase in the load capacity of the variator over the entire control range of the angular velocity of rotation of the output shaft.

Claims (1)

FRICTIONAL PLANETARY A VARIATOR comprising a housing, input and output shafts mounted on the input shaft with axial movement of the carrier with satellites and a stationary conical shell associated with the housing interacting with the latter inner surface, characterized in that, in order to increase the load capacity of the variator, it is provided fixed on the output shaft and interacting the outer surface with the satellites conical shell with a taper opposite to the taper of the fixed shell.