| 摘要 |
A cable-operated excavator set up on a floating base and having a grab which is attached to a cable which in turn is run over a cable pulley at the end of a boom to a cable drum, a length-measuring device being allocated to the cable, a computer being arranged on the excavator, into which computer a predetermined cable length which is compared with the measured length of the length-measuring device can be entered as a limit value, and a signal being produced if the measured cable length exceeds the limit value. <IMAGE>
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