Roller drive and a roller stand with such a drive

摘要

The invention relates to a roller drive, comprising
a first drive train for transmitting drive power from a first drive motor to a first roller;a second drive train for transmitting drive power from the same or a second drive motor to a second roller;the two drive trains each comprise a universal shaft, comprising a first joint permitting a larger angular deviation and a second joint permitting a larger angular deviation;an end part of each universal shaft which is remote from the roller is associated with one of the drive motors or the common drive motor, and is driven by the same;an end part of each universal shaft which is close to the roller is associated with one of the rollers in order to drive the same;the two end parts of each universal shaft are connected with each other via the two joints and a middle part connected to both joints.;The roller drive in accordance with, the invention is characterized by the following features:
the two end parts which are close to the roller are each connected to a toothed coupling with length compensation which is intended for coaxial or substantially coaxial connection to a drive pin of one of the rollers, withthe toothed coupling having two coupling halves which are displaceable in the longitudinal direction and are in drive connection with each other via a meshing engagement;each universal shaft and each toothed coupling are supported via a common radial bearing which is positioned directly on or adjacent to the joint between the middle part and the end part of the universal shaft which is close to the roller.

主权项

1. A roller drive comprising:
a first drive train for transmitting drive power from a first drive motor to a first roller; a second drive train for transmitting drive power from the first drive motor to a second roller or a second drive motor to the second roller; the first drive train and the second drive train each comprises a universal shaft, each universal shaft comprising a first joint permitting a larger angular deviation and a second joint permitting a larger angular deviation; a first end part of each universal shaft being remote from the first and/or second rollers is associated with a common drive motor or at least one of the first drive motor and the second drive motor, wherein the first end part of each universal shaft is driven by the common drive motor or at least one of the first drive motor and the second drive motor; a second end part of each universal shaft being close to the first and/or second rollers is associated with at least one of the first roller and the second roller in order to drive the at least one of the first roller and the second roller; the first end part and the second end part of each universal shaft are connected via the first joint and the second joint and a middle part connected to the first joint and the second joint; wherein the second end part of each universal shaft are each connected to a toothed coupling with length compensation that is intended for coaxial or substantially coaxial connection to a drive pin of at least one of the first roller and the second roller; wherein the toothed coupling has two coupling halves that are displaceable in a longitudinal direction and are in drive connection with each other via a meshing engagement; wherein the universal shaft and the toothed coupling of the first drive train are supported via a first common radial bearing that is positioned directly on or adjacent to the second joint between the middle part and the second end part of the universal shaft, and the universal shaft and the toothed coupling of the second drive train are supported via a second common radial bearing that is positioned directly on or adjacent to the second joint between the middle part and the second end part of the universal joint close to the roller.