Crane extension, in particular mobile crane extension, with pre-tensioned pulling elements

摘要

The boom part has a forming jacket, string elements and a sheathing. The string elements are pre-stressed and are equipped with sensors. The string elements introduce a changeable pressure pre-load in the boom part by an actuator. The boom part counteracts the outer impact by sensors and actuators through a closed loop. The anchorages of the string elements are arranged in or on the end frame. The sensors are integrated in the string elements.