JANUARY 2013 www.craneworld.com A KHL Group publication Official magazine CHINA ■ TRAINING AND CERTIFICATION ■ RENTAL SURVEY ■ WIRE ROPE

WIRE ROPE The correct fleet angle is vital to help give maximum rope life and smooth, safe spooling operation Fixing fleet angles You may know the importance of fleet angles, but do you know the best ways to correct them? CRIS SEIDENATHER, managing director of Lebus International Engineers, explains how hen spooling wire rope onto a drum, it is necessary for the rope to come onto the drum at a very slight angle, just enough to encourage each wrap to sit tidily next to the previous wrap, and for each layer to ride cleanly onto the layer beneath. In fact, apart from the design of the drum itself,...

WIRE ROPE spooling devices are available. One is a fleet angle compensator, which is driven automatically by the rope tension. The other is a level winder that is mechanically driven. Both offer a solution to guide the cable along the drum between flanges, but each has its advantages and disadvantages. Fleet angle compensator The fleet angle compensator (FAC) is driven by the movement of the wire rope as it goes through the crossover sections of the drum. As the rope winds or unwinds, the FAC shaft slowly oscillates, allowing its sheave to slide back and forth across the shaft to maintain an...

WIRE ROPE a main shaft (the lead screw) with helical screw grooving along which the rope feeder travels. The rope feeder housing includes two vertical roller bars and one horizontal roller or, alternatively, a wire rope sheave. The lateral movement of the housing is generated by a chain drive sprocket ratio between drum and lead screw, as shown in the image. The automatic level winder fitted is designed signed and engineered to be compatible with the grooving on the drum. Perfect, controlled ntrolled spooling is guaranteed regardless of the number of layers and slight changes in es wire rope...