| 摘要 |
An emergency brake system (10) comprises first and second fluid communication paths (20) and (22) which provide fluid communication between a brake (18) and a hydraulic fluid tank (24). A first valve is provided in the first path (20) to vary pressure in the brake line (26) to a pressure P1 enabling the brake to apply a braking torque of T1 and a second valve (30) is provided in the path (22) to vary brake line pressure to a pressure P2 enabling the brake (18) to apply a braking torque of T2 where T2>T1. The system (10) senses the speed of a machine to which the brake (18) is coupled. Depending on the sensed speed of the machine when the emergency brake (18) is applied the system (10) will open one or both of the paths to control the braking torque applied by the brake (18). |
