Foldable type hoop has been fabricated & fixed on engine side ladder of RTG to prevent the personal falling downwards while climbing. Opening (straightening) & closing (folding) of the hoop can be done manually by one person from bottom or from top. Self- latch arrangement is provided to lock the hoop while in opened condition. Limit switch is also provided as a safety interlock to prevent gantry movement when the hoop is in opened condition.

Idea in detail
The hoop has been fabricated by using Aluminum flats, SS-Steel pipes (1/2” size) & 04Nos pneumatic cylinders. Opening (straightening) & closing (folding) of the hoop can be done manually by one person. The ladder has the following provisions:

  • Shape of hoop is made as per the fixed type.
  • On opening of the pin, hoop can be pulled from close to opened condition.
  • Spring loaded Self-latch arrangement is provided at bottom of the hoop while it is in opened condition. Same need to be released manually while closing of hoop.
  • Limit switch is provided as a safety interlock to prevent gantry movement when the hoop is in opened condition.
  • To close the hoop, release the latch and gentle upward push is required.
  • Four number Pneumatic cylinders are provided for ease of up & down movement
  • Arrangement made on top of the ladder to release latch.
  • Handle is provided on the on top of the ladder to close and open the hoop from engine platform.
  • Pin is provided at the bottom to lock the hoop while it is in closed condition