VARIABLE SPEED TRANSMISSION ARRANGEMENT WITH AN INFINITELY VARIABLE TOROIDAL DRIVE AND A SUMMARISING GEAR SET OF THE PLANET WHEEL TYPE

摘要

The invention relates to a variable speed transmission arrangement with a central shaft (4) which passes through a central wheel (7-1, 7-2, 7-3) of a toroidal drive (8) with clearance and which is rotationally fixed to a planet carrier (11-1, 11-2, 11-3) of a summarizing gear set (12) of the planet wheel type. The outer periphery of the central wheel (17) of the toroidal gearing is provided with inner axial engaging gearing (14-1) on the external periphery thereof and the planet carrier is provided with corresponding outer engaging gearing (15-1), or the face of the central wheel (17-2) of the toroidal drive, which is oriented towards the planet carrier, is provided with an axial hub projection (43) which has a reduced diameter in comparison to the periphery thereof. Internal axial engaging gearing (14-2) is provided on the outer periphery of the hub projection (43). The face of the planet carrier (11-2), which is oriented towards the central wheel of the toroidal gearing, is provided with a web part (44), which is positioned in a radially inward manner in relation to the bearing pin for the planet wheels, with corresponding outer engaging gearing (15-2) or at least one bearing pin (23), comprising a coupling bolt (45) on the end of said pin, which is oriented towards the central wheel of the toroidal gearing, in the coaxial extension. The central wheel (7-3) of the toroidal drive, on the face (9) thereof, which is oriented towards the planet carrier (11-3), has an axial opening (46) for a coupling bolt. According to the invention, a central wheel of the toroidal drive, which is situated on the output side, and an inner central wheel of the summarizing gearset are connected in a rotationally fixed manner by means of an intermediate shaft which is concentric in relation to the central shaft. Said intermediate shaft can be arranged in a manner enabling it to be axially displaced towards one of the two central wheels, which are connected thereto in a rotationally fixed manner.