| 摘要 |
<p>A vane pump/motor comprises a left end cover (1), a right end cover (2) and a cam ring (3) which is fixed between the left and the right end covers. An inner chamber of the cam ring (3) is distributed with a plurality of same working sections uniformly along the peripheral direction, and each working section respectively comprises a leading-end oil feeding area and a rear-end oil draining area, wherein the cam ring is respectively provided with a main oil supply hole (4) corresponding to each leading-end oil feeding area, while each rear-end oil draining area is respectively provided with a main oil draining hole (5). A communication port between the main oil supply hole (4) and the inner chamber of the cam ring covers the leading-end oil feeding area corresponding to the communication port, while a communication port between the main oil draining hole (5) and the inner chamber of the cam ring covers the rear-end oil draining area corresponding to the communication port. The invention simplifies the inner structure, reduces leakage points and improves reliability and stability of working of the vane pump and the vane motor.</p> |
