| 摘要 |
A hydraulic pump motor components including at least two co-acting gears arranged in wells which conform to the gears and which communicate with channels for supply and return oil respectively. To enable the displacement of the pump or motor to be readily changed, the housing of the pump or motor is made in two parts (1, 2) which can be sealingly coupled together. The one part (1), the mounting part, in which the input shaft (3) of the pump, or the output shaft (3) of the motor, is journalled is provided with an inlet and an outlet (10, 11) for supply and return oil respectively. The shaft (3) passes completely through the mounting part (1) and projects from the end surface of the mounting part located in the dividing plane of the housing, for receiving a sun wheel (5). The journal shafts (8, 9) for the planet wheels (6, 7) also project out from the end surface, and channels for supply and return oil respectively discharge into this end surface. The other part of the housing is a readily exchangeable cover (2) which serves as a pressure chamber and which is provided with wells (16) for the planet wheels (5, 6, 7). The cover (2) is also provided with bores (17, 18, 19, 20) which extend from the surface of the cover located in the dividing plane of the housing and which communicate with the aforementioned wells. These bores are arranged, when the cover (2) is mounted onto the mounting part (1) to connect with the mouths (12, 13, 14, 15) of the oil supply and return channels respectively in the end surface of the mounting part. |
