| 主权项 |
1. An arrangement of a hollow transmission shaft (1) in a transmission (13), the hollow transmission shaft (1) being positioned coaxially with an oil pump (2) of the transmission (13), the oil pump (2) having an inlet oil flow (B), an outlet oil flow (C) and at least one leakage oil flow (A, D, E), the hollow transmission shaft (1) driving the oil pump (2) for supplying oil from a pressure side to the transmission (13) via the outlet oil flow (C), and the hollow transmission shaft (1) supporting at least one external gear, wherein the arrangement comprises:
an internal bore of a hollow pump shaft (4) of the oil pump (2) is arranged coaxially with an internal bore of the hollow transmission shaft (1), but the hollow pump shaft (4) is axially spaced from the hollow transmission shaft (1) via a carrier element (5) having an internal bore, a cover of the oil pump (2) sealingly covering an inlet end of the hollow pump shaft (4), a first passage by which the internal bore of the hollow transmission shaft (1) is internally oiled by a first portion (A) of the at least one leakage oil flow which leaks from the oil pump (2), through at least one pump-shaft bearing point (3), between the cover of the oil pump (2) and the inlet end of the hollow pump shaft (4), into the inlet end of the hollow pump shaft (4), along the internal bore of the hollow pump shaft (4), and into the internal bore of the hollow transmission shaft (1), and a second passage by which a second portion (E) of the at least one leakage oil flow which leaks from the oil pump (2), through the at least one pump-shaft bearing point (3), between the inlet end of the hollow pump shaft (4) and the cover of the oil pump (2), into the inlet end and of the hollow pump shaft (4), along the internal bore of the hollow pump shaft (4), between the pump shaft (4) and the carrier element (5), and along an exterior surface of the hollow pump shaft (4). |
