Electrification of rubber-tyred gantry cranes (RTGs) by means of motor cable reels

The RTGs equipped with a diesel-electric-drive are used in harbours all over the world. By means of these RTGs trucks and so-called “prime movers” are loaded resp. unloaded with the containers of the container ships.

Continuously increasing fuel costs, the required time for refuelling of the cranes, increased maintenance costs for the diesel-electric-drives with the corresponding downtimes as well as tightened environmental regulations led to the requirements of the crane manufacturers and port operators to as far as possible replace the standard drive by a flexible power transmission.

STEMMANN-TECHNIK now has met this demand also by the successful retrofitting of RTGs by means of motor cable reels.

The advantages of the retrofitting are:

  • Enormous reduction of the amount of diesel-fuel needed. Contrary to the permanently operated diesel-motor, only the actually required amount of energy is used with the external energy supply.
  • Reduction of time and costs due to the shorter maintenance intervals of the diesel-electric-drive.
  • Reduction of costs and work by reduction of the stops for refuelling.
  • Significantly less emissions by the lesser use of the combustion engine and thus better environmental conditions at the site.

Depending on the customer’s requirements and in cooperation with the operators at the site Stemmann-Technik will find individual solutions to retrofit the RTGs from diesel-electric-drives to electrical power supplies by means of motor cable reels.

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