POWER TRANSMISSION DEVICE AND METHOD FOR OPERATING A POWER TRANSMISSION DEVICE IN A DRIVE TRAIN FOR DRIVING A WORKING MACHINE AT A VARIABLE SPEED

摘要

A power transmission device has a reverse torque converter and a planetary gear mechanism with a ring gear, sun wheel and planet carrier with several planets. An input is connected to an impeller of the reverse torque converter and to a first element of the planetary gear mechanism. A turbine wheel is connected to a second element of the planetary gear mechanism, and a third element of the planetary gear mechanism is connected to or forms an output of the power transmission device. A selectable control clutch transmits power in a first rotation speed range, with an emptied reverse torque converter, between the input and the output of the power transmission device. A device supports and/or fixes the second element of the planetary gear mechanism, in particular the connection between the turbine wheel and the second element of the planetary gear mechanism in this first rotation speed range.