Crane with a winch and a traction control device

摘要

The device has a winch (10) solidly associated to a frame (13) connected with a slight play to a structure of a crane. A load cell detects oppose movements between the frame and the crane structure. A load cell provides a command signal that is proportional to stresses generated on a cable (11). The command signal commands activation of hydraulic actuators (2a, 3a, 4a, 5a) operating movements of a main boom (1a, 1b).