Has RBC energy
Innovative rotor blade assembly
The so-called RBC-D-Green-Line traverses from ematec are completely battery-operated and designed to be fail-safe thanks to double drive redundancy. The traverses developed by the specialist provider ematec automatically adjust themselves at any time to the rotor blade to be lifted and balance themselves. In addition, the RBC trusses can accommodate all currently available rotor blade types from 45 m to 110 m. For ematec, the Enercon order is the largest single order in the company's 23-year history. The first traverse should be delivered as early as the end of March 2021, then each additional one should follow every four weeks.
The new traverses RBC (for Rotor Blade Clamp) and the double variant RBC-D can accommodate all wing shapes on the market without conversion work - including future ones. This is made possible by an automatically adaptive blade support, with which the crossbeam independently and precisely adapts to each rotor blade shape. A patent has been applied for for this technology. The new traverses can accommodate and handle sheet weights of up to 40 t. The double variant RBC-D can handle sheet weights of up to 35 t. The RBC series also scores with a tilt angle of ± 30 degrees. The new type of trusses can be used particularly universally in the wind power industry - both onshore and offshore. With a slope height of approx. 3.5 m, the RBC series makes crane management much easier, especially with regard to the constantly increasing hub heights of the wind turbines.
Safe handling of the rotor blade
The “D” in RBC-D stands for “Double” and means that, in addition to the lower telescopic gripper, the upper telescopic gripper is also equipped with fourteen hydraulically moved and cardanically suspended grip pads. The special feature: Thanks to a very homogeneous load distribution with a contact area of approx. 10 m², nothing can happen to the sheet. This large contact area makes it possible to tilt the rotor blade ± 30 degrees without an additional safety rope.
For safe handling of the rotor blade, the RBC always finds the exact center of gravity individually. Two counterweights on the two truss blades automatically adjust to the center of gravity - with and without a rotor blade. Even when the gripper is opened after assembly on the hub, there are no uncontrolled movements that could damage the blade or torpedo the handling process. Due to the round arch on the traverse, the RBC and RBC-D always stay perfectly in the center of gravity even when tilted up to ± 30 degrees. The same applies when pitching the sash up to a maximum of ± 8 degrees. This prevents uncontrolled movement of the unit when tilting or pitching.
In order to be prepared for all weather conditions and to be able to carry out assembly projects especially in winter, Enercon ordered all RBC-D trusses with special pads from ematec. In this variant, the rubber grip pads have a coating specially developed by ematec, which enables dirty, wet or icy rotor blades to be gripped safely.
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