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Hydro International -
To make A-frame adjusting and equipment change faster, easier and safer, MacArtney (Denmark) has designed and developed a new A-frame system.
This new system makes it possible to access the top of the A-frame from the deck of the ship.
This clever hydraulic design, using just 2 rams, articulates the A-frame a full 149° from the 20° angle for launching equipment over the side or the rear of the vessel to 11° over the deck of the vessel.
It has a high total safe working load of 89 kN throughout the entire process. Equipment, for example a full ROV launch system, can be installed on the A-frame on deck by operators working at deck level and readied for launch.
With all operators clear of the frame, the A-frame can be lifted up, past 90° and then onwards over the side or the rear of the vessel and lowered down to 20° for launch into the water.
For retrieval, the process is reversed and the A-frame raised past the 90° point and lowered to 11° over the vessel deck, which makes a 149 degree range of movement.
From here, operators can conveniently remove and replace equipment and make any necessary adjustments to the A-frame without having to be hoisted up the frame.
Lowering the A-frame to 11° from the deck also makes any service and maintenance work easier and faster to perform.
Posted via http://maritime-news.posterous.com Maritime-News posterous
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