Gripper device with a stepping mechanism, in particular pincer grab

摘要

The invention relates to a gripper device for grasping a gripper with good opening - and closable gripper elements (2, 3), wherein said gripper means, with the aid of a fastening device (32) can be fastened to a cantilever arm of a carriage, and wherein a stepping mechanism (40) for controlling the opening - and closing movements of the gripper elements (2, 3) between an open state and a closed state is provided. The stepping mechanism (40) detects the relative movement between the two parts of the gripper device, wherein a locking element of the stepping unit (40) between a release position in which the gripper elements (2, 3) to execute a closing movement, and a locking position, in which the gripper elements (2, 3) are held in the opened position is movable. In the case of fluctuations in the hanging on the cantilever arm and opened gripper device is formed by a the movement of the locking element, the end of the stepping operation means (40) can be prevented that the locking element in the release position.