| 摘要 |
A gripper device is provided for gripping and releasing objects. The device incorporates two gripper fingers which are opened and closed in response to the movement of a piston rod. The gripper fingers move from the open to the closed position as the piston rod moves from the retracted to the extended position. The gripper fingers are connected to a connector block by chain links which act as a toggle. When in the closed position, the gripper fingers are locked and can only be unlocked by a retraction of the piston rod with sufficient force to overcome the over-centre toggle arrangement of the chain links.
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