Work implement with a mechanical diaphragm wall gripper and method for carrying out a working step of such a work implement

Work implement, comprising a mechanical diaphragm wall gripper with two gripper buckets, which is suspended on the work implement by means of a hoisting cable and a closing cable, a hoisting cable winch, on which the hoisting cable is mounted so that the hoisting cable can be wound up and unwound for adjusting the diaphragm wall gripper, a closing cable winch, on which the closing cable is mounted so that the closing cable can be wound up and unwound for actuating the gripper buckets, a measuring device with at least one sensor for detecting a current position, speed and/or acceleration, a control unit connected to the measuring device, by means of which the hoisting and closing cable winches can be actuated, as well as an input means connected to the control unit for controlling the diaphragm wall gripper,

• wherein
• the control unit is configured to control the hoisting cable winch and/or the closing cable winch by means of a cascade control in order to carry out a working step involving the diaphragm wall gripper depending on measurement data from the measuring device and on target specifications of the input means.