Cranes reconstruction and modernization

 
Why to do reconstruction of the crane? The main reasons are:
  • increasing the lifting capacity of the crane
  • changing the lifting mechanism (hoist, winch)
  • increasing the lifting speed, travel speed of the hoist and bridge
  • renewal of electrics installation
  • changing of the linear power supply of the bridge crane
  • changing the manner of control (for example, installation of radio remote control system)
  • installation of an anti-collision device for the cranes travelling on the same crane way
  • installation of power supply for a new additional equipment which would be hung on the hook
  • addition of commercial or technological weighing on the crane, or other functions (for example, precise positioning of the hoist and bridge of the crane)
  • addition or changing of an overload cut-out device
 

Example of reconstruction of bridge crane:

In 2009, within a reconstruction of a double girder bridge crane of Snina 12,5t/27,9m for PRESBETON Nova, s.r.o. the following modifications and works were performed:
  • demounting of an existing festoon cable power supply system for the hoist
  • demounting of existing travel motors of the bridge, including brake system 
  • demounting of an existing crane switchboard
  • demounting of an existing cabin and lightning system
  • delivery and mounting of a new power supply system for the hoist – energetic cable chain
  • delivery and mounting of a new crane switchboard 
  • delivery and mounting of a new remote radio control
  • delivery and mounting of new travel motors of the bridge, including brakes 
  • complete painting of the steel structure of the crane
  • delivery and mounting of a new power supply trolley with the length of 74m 
  • new documentation and production plate of the crane
  • revision and testing of the crane
 

Bridge crane GDMJ 12,5t-27,9m after reconstruction

SNINA 12,5t-27,9m, before reconstructionSNINA 12,5t-27,9m before reconstructionSNINA 12,5t-27,9m before reconstruction
 

Bridge crane GDMJ 12,5t-27,9m after reconstruction

Hoists positioningNew hoist GHMNew crane switchboardNew radio controlNew power supply – energo-chainCompletely new painting of  craneCable drum of hoistDemounting of cabin

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