| 摘要 |
A support carriage of a manipulator carries an outrigger arm on which is mounted a grab assembly. Upper and lower jaws pivotal on the assembly about respective superposed upper and lower parallel axes can be moved by an actuator head engaging both of these jaws from an open position in which the jaws are pivoted apart from each other to a closed position in which the jaws are pivoted together. The lower jaw is moved at first into the closed position and locked therein before the upper jaw is moved all the way down into the closed position. |
