| 摘要 |
A clamp force control (30) for a fluid powered clamping and lifting assembly (10) adapted to clamp and lift objects (20) by friction engagement in clamping and lifting operations by clamping pressure in a clamping pressure line (32) and lifting pressure in a lifting pressure line (58) provided for respective clamping actuators (16) and lifting actuators (12) of the assembly. To enable the control to safely adapt the clamping force to the lifting force without using electronic control equipment when handling different objects, the control has an adjustable pressure amplifier (52) provided in fluid connection (50) between the clamping pressure line (32) and the lifting pressure line (58) and adapted to provide a predetermined, constant difference between the lifting pressure and the clamping pressure. |
