| 摘要 |
<p>A fluid ram, for example a hydraulic ram, is provided with means for braking the ram piston at the end of its stroke. According to the invention the piston is braked by the action of the ram working fluid, and means are provided for preventing the pressure of the working fluid becoming excessively high. In one embodiment the entire braking means is located inside the ram in order to simplify connection to the working fluid supply circuit. The invention is applicable to both single and double action rams.</p> |
