OPTICAL SYSTEM FOR DETECTING THE STATE OF WINDING OF A CABLE ON A WINCH

摘要

System allowing automatic detection of the end of winding of a cable (11) on a winch. The system comprises an optical detector (14) which emits in the direction of the cable a light beam (13) which illuminates a given zone through which the cable travels in the course of its winding. The detector is associated with a specific marking (16), strongly reflecting, positioned on a section of the cable close to its end, in such a way that when this section enters the zone illuminated by the detector it reflects the beam towards the detector which detects this reflected beam and which then signals that the cable is practically at the end of winding. The detector, placed in a fixed position at a given distance from the cable, is also associated with a luminous waveguide (31, 51) interposed between the cable and the optical detector.