| 摘要 |
<p>By using multiple external gears (9,11,12,13,14) and internal gears (10), which are engaged with each other, and multiple radial sealing elements (15-22),and axial sealing elements, a pump or motor, which includes multiple equivalent pumps or motors, is made. Each gear included in thus made gear pump or motor is radially hydraulically counterbalanced, even completely hydro-mechanically counterbalanced, loads on bearings being able to become zero. Axial gaps and radial gaps both have been compensated. The pump or motor can stagelessly vary its output. Accordingly, a gear pump or motor with constant output or stagelessly variable output, as well as a relevant stageless hydraulic speed variator, can be made, which will have lower production cost, higher transmission efficiency and higher power density. <IMAGE></p> |
