| 摘要 |
The invention relates to a gear pair for a lifting vessel for a rack and pinion drive for lowering and raising a jack-up leg of a lifting vessel (14). The gear pair comprises two gear units (1a, 1b) each having a drive shaft (11) for connection to a drive (7) and an output shaft (10) for connection to a drive pinion for engagement in one of two toothed racks (4) fitted on the jack-up leg. Each of the gear units (1a, 1b) with output in opposite directions of rotation has a planetary stage (2a, 2b) mounted in a transmission housing (9) and is supported with the aid of a torque support (12a, 12b, 13a, 13b) on the respective other gear unit (1b, 1a). The torque support (12a, 12b, 13a, 13b) of each gear unit (1a, 1b) surrounds the transmission housing (9) of the respective other gear unit (1b, 1a) in a pincer-like manner and contacts the housing (9) symmetrically with respect to a straight line connecting the output shafts (10) at two support points which relative to a vertical plane extending through the output shaft (10) of the respective other gear unit (1a, 1b) are located towards the gear unit (1a, 1b) which has the torque support (12a, 12b, 13a, 13b). |
