| 摘要 |
<p>A cut-adjusting apparatus for a mower comprising a rotatably mounted cutting cylinder (10) and a stationary blade (18) in grass-cutting relationship therewith, the apparatus comprising means for effecting relative approaching movement of the cylinder and the stationary blade towards each other until they contact each other with a predetermined force, and means for effecting relative movement of the cylinder and blade away from each other to separate them by a predetermined distance, thereby defining the cutting relationship of the cylinder and the blade. The approaching movement is effected hydraulically, and a volume of fluid is trapped when the in-contact datum is established. The separation of the blades is affected by hydraulic pressure acting against a spring (40), preferably via the trapped volume of fluid.</p> |
