Lebus Groove Sleeves For Rope Winding Machine Lifiting Winch CNC Machined

Lebus Groove Sleeves For Rope Winding Machine Lifiting Winch CNC Machined

Application

The multilayer wire rope spooling system has undergone continuous refinement over the years and adapted for any application where long lengths of steel wire ropes must be wrapped in multiple layers quickly and smoothly. Examples include:

· Cranes for construction sites, offshore oil rigs, ports or onboard ships

· Deep mining

· Oceanographic research vessels and pipelaying barges

· Funicular railways and cable cars

Split sleeves

Grooving systems for multilayer spooling can be carved onto steel shells that are mounted onto old drums, by either bolting or welding, as an outer sleeve. Called split sleeves, they can be retrofitted onto old drums or mounted on new drums to allow a future change of application.

Wire rope spooling-Technology is the technology to prevent wire rope getting snagged when spooled especially in multiple layers on a drum

System advantages

With the Lebus groove system, rope wear is considerably reduced in multilayer spooling.

When the first layer has filled the drum, the second layer then travels back across the drum with each wrap of rope sitting precisely along the groove of two wraps of the first layer. With parallel grooving it is possible to calculate the exact forces that the rope imposes on the drum because the spooling is controlled.Cross winding is reduced to approximately 20 percent of the circumference of the drum, and 80 percent remains parallel to the flanges in the inner layer rope groove. This parallel grooving evenly distributes the load between the individual layers and has been show to increase substantially – by more than 500percent, tests have shown – the life of the wire rope. The system has been used to mount ropes up.

n offshore applications, huge lengths of rope are often housed on drums. The anchor winches on Saipem’s Semac 1 pipe laying barge, for example, each hold 2,800 metres of 76mm (3 inch) diameter wire rope in 14 layers. Saipem’s Castorone, the world’s largest pipe laying vessel uses a wire rope that is 3,850m long and 152mm in diameter. It weighs 420t. The rope is pulled by capstan and stored on a massive Rema traction winches that feature the parallel grooving system, with an approximately back tension of 40t on the capstan.