| 摘要 |
A gear pump wherein the trunnions of two or more mating gears are mounted directly in ring-shaped bearing members or in bearing sleeves which are fitted into the bearing members. The deformation of those surfaces of bearing members which are immediately adjacent to the end faces of the corresponding gears is prevented by enlarging the bores of the bearing members in close proximity to the end faces of the gears, by forming the internal surfaces of the bearing members with circumferentially complete or arcuate grooves, or by reducing the outer diameters of bearing sleeves in immediate proximity to the end faces of the gears. This insures that the deformation of bearing members in response to transmission of forces by the respective trunnions is not propagated all the way to those surfaces of the bearing members which are immediately adjacent to the end faces of the gears. |
