Another type of crane electrification method involves the use of a cable reel—either spring-loaded or motor-driven—to release, retrieve, and store conductor cable for crane equipment. A reel with conductor cable wrapped around it is most often used for mainline power delivery along a runway or monorail. When mounted to a trolley, a cable reel can be used to deliver power and control to a below-the-hook lifting device or other equipment attached to the crane hook.
Cable reels utilize a very simple design that automatically winds and stores flexible cables. Cable reel electrification requires little to no maintenance and is easy to install. They can also be mounted stationary, or on a swivel base to allow the cable to payout in multiple angles and directions.
Cable reels may see limited use for standard crane applications but can provide the right electrification method for special applications in tough environments—both indoor and outdoor. Cable reels are often considered for explosion proof applications or for monorails with lighter capacity hoists. They can also be used for below-the-hook devices requiring electrification.
Cable reels can protect cable against corrosive, acidic, or explosive environments with stainless or galvanized steel construction and powder coated components. They’re also great for demanding applications where daily cycles and crane usage are high. These are popular for mobile or heavy-duty gantry cranes and can be used on both electric and pneumatic air systems.
You may experience a sag factor which will cause the cable to hang or drop down when the cable is stretched out over a long distance.
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